| Plenary Sessions | |
| Special Events | |
| LCT | Workshop on LC Science and Technologies |
| AMD | Workshop on Active Matrix Displays |
| FMC | Workshop on FPD Manufacturing, Materials and Components |
| PH | Workshop on Inorganic Emissive Display and Phosphors |
| OLED | Workshop on OLED Displays and Related Technologies |
| 3D | Workshop on 3D/Hyper-Realistic Displays and Systems |
| VHF | Workshop on Applied Vision and Human Factors |
| PRJ | Workshop on Projection and Large-Area Displays and Their Components |
| EP | Workshop on Electronic Papers and Nonvolatile Displays |
| MEET | Workshop on MEMS and Emerging Technologies for Future Displays and Devices |
| DES | Workshop on Display Electronic Systems |
| FLX | Workshop on Flexible Electronics |
| INP | Workshop on Touch Panels and Input Technologies |
| 3DSA | The 14th International Conference on Three Dimensional Systems and Applications |
| DXR | Topical Session on DX Sensing and Radiation Imaging |
| IST | Topical Session on Image Sensing Technologies |
| MVS | Topical Session on Metaverse System |
Plenary Sessions
| Dec. 6 | 9:00-9:30 | Opening |
| Dec. 6 | 9:30-11:30 | Keynote Addresses |
Dec. 6 9:00-9:30 Snow Hall
Master of Ceremony: Nobuyuki Hashimoto (Executive Chair, IDW ’23)
Opening Remarks
Munekazu Date (General Chair, IDW ’23)
Achin Bhowmik (President, SID)
Keiji Kodama (President, ITE)
Nobuyuki Hashimoto (Executive Chair, IDW ’23)
Takahiro Ishinabe (Program Chair, IDW ’23)
Award Ceremony
Mutsumi Kimura (Director, IDW General Incorporated Association)
Keynote AddressesDec. 6 9:30-11:30 Snow Hall
Chair: Takahiro Ishinabe (Program Chair, IDW ’23)
| Keynote Address-1
9:30 |
Advanced Sensing Technology and Its Future
Rihito Kuroda Tohoku University (Japan) |
| Keynote Address-2
10:00 |
Metal Halide Perovskites for LEDs and Their Applications Feng Gao Linköping University (Sweden) |
| Keynote Address-3
10:30 |
Technology Trends in Diagnostic Imaging Systems Hiroaki Nakai Canon Medical Systems Corporation (Japan) |
| Keynote Address-4
11:00 |
BMW i Vision DEE - Your Ultimate Companion - Driven by Technology Michael Brachvogel BMW AG (Germany) |
Special Events
| Dec. 5 | 17:30-18:50 | Metaverse Special Lectures |
| Dec. 6 | 19:00-21:00 | Display Night |
| Dec. 7 | 9:00-10:00 | Special Session: Capturing and Displaying Image Technologies in the Medical Field |
Metaverse Special Lectures
Dec. 5 17:30-18:50 Metaverse Venue
Dec. 6 19:00-21:00 Hotel Nikko Niigata
Dec. 7 9:00-10:00 Marine Hall
Workshop on LC Science and Technologies
| Dec. 6 | 13:00-14:00 | Snow Hall B | LCT1 | LC Lenses and Materials for AR/VR |
| Dec. 6 | 14:50-16:10 | Snow Hall B | LCT2 | Patterned LC Technology for AR/VR and Advanced LCDs |
| Dec. 6 | 16:40-18:00 | Snow Hall B | LCT3 | Low-Power Consumption and Privacy LCDs |
| Dec. 7 | 9:00-10:20 | Snow Hall B | LCT4 | Analyses and Novel LCDs |
| Dec. 7 | 10:50-12:10 | Marine Hall | INP2/LCT5 | Biomedical Imaging and Its Possibility Using Liquid Crystal Technology |
| Dec. 7 | 13:30-14:30 | Marine Hall | INP3/LCT6 | 3D Information Input and Display Using Liquid Crystal Technology |
| Dec. 7 | 15:20-16:40 | Snow Hall B | LCT7/FMC7 | AR/VR Displays and Optics |
| Dec. 7 | 17:10-18:30 | Snow Hall B | LCT8/FMC8 | LC Technologies for 5G/6G |
| Dec. 8 | 9:00-10:20 | Snow Hall B | LCT9 | Emerging Materials and Applications |
| Dec. 8 | 13:30-14:50 | Marine Hall | FMC10/LCT10 | Optical Materials |
| Dec. 8 | 11:10-12:30 | Exhibition Hall B | LCTp1 | LC Optics and Display Devices |
LCT1: LC Lenses and Materials for AR/VR
Special Topic of Interest on AR/VR and Hyper Reality
Dec. 6 13:00-14:00 Snow Hall B
Chair: Seiji Shibahara (Sony)
Co-Chair: Hiroyuki Yoshida (Osaka University)
| LCT1-1
13:00 |
Plastic Tunable Liquid Crystal Lenses for AR and VR *Paul Cain1, James Harding1 1. FlexEnable Technology Ltd. (UK) |
| We describe a plastic, flexible tunable liquid crystal lens based on Fresnel optics that allows variable focus of the virtual image. The lens has been made with ultra-thin, light bioplastic films instead of glass, uniquely enabling attractive product form factors and increasing comfort by saving weight and thickness. | |
| LCT1-2
13:20 |
Fast Switchable Lens Based on Dual Ferroelectric Liquid Crystal Polarization Converter with Charge Balancing *Zhengnan Yuan1, Alwin Tam1, Zhi-Bo Sun1, Rong-Sheng Chen1, Fion.S.Y Yeung1, Hoi-Sing Kwok1 1. The Hong Kong University of Science and Technology (Hong Kong) |
| A high-efficiency (97%) and fast polarization converter are achieved using Ferroelectric Liquid Crystal (FLC) by cascading two FLC cells with a 500 contrast ratio. Fast focus modulation is shown without a reverse state. The proposed system is a promising candidate for near-eye-display, such as Virtual Reality /Augmented Reality. | |
| LCT1-3
13:40 |
An Immersive Head-Mounted Display Using a Low Aberration Liquid Crystal Lens *Wei Cheng Hung1, Tzu-Yu Tai1, Jui-Wen Pan1, Shie-Chang Jeng1 1. National Yang Ming Chiao Tung University (Taiwan) |
| We demonstrate an immersive head-mounted display (HMD) system in which a hole-patterned electrode (HPE) liquid crystal (LC) lens with a low aberration is incorporated, which is suitable for both hyperopic and myopic users. |
LCT2: Patterned LC Technology for AR/VR and Advanced LCDs
Special Topic of Interest on AR/VR and Hyper Reality
Dec. 6 14:50-16:10 Snow Hall B
Chair: Yukihiro Kudoh (Kogakuin Univ. )
Co-Chair: Mitsuru Chida (Sharp Display Tech.)
| LCT2-1
14:50 |
Invited Development and Application of Liquid Crystal Geometric Phase Elements for Display Systems *Moritsugu Sakamoto1, Kohei Noda1, Masato Suzuki1, Tomoyuki Sasaki1, Ryusei Momosaki2, Yoshichika Tanaka2, Takeya Sakai2, Yukitoshi Hattori2, Nobuhiro Kawatsuki3, Hiroshi Ono1 1. Nagaoka University of Technology (Japan), 2. Hayashi Telempu Corporation (Japan), 3. University of Hyogo (Japan) |
| Geometric phase elements (GPEs) have been attracted attention as optical components of a display system, including a see-through display and an aerial display. In this presentation, we report our current attempts to develop GPEs made of liquid crystal polymers and apply them to an aerial display system. | |
| LCT2-2
15:10 |
Transflective Polarization Gratings Based on Reconfigurable Cholesteric Liquid Crystals *Yu-Chieh Li1, Yi-Te Chuang1, Ting-Mao Feng1, Chun-Ta Wang1 1. National Sun Yat-sen University (Taiwan) |
| This study demonstrates a switchable transflective polarization grating based on cholesteric liquid crystals (CLCs). The planar and uniformly lying helix (ULH) states of CLCs allow for the reflective and transmissive modes of the polarization grating, respectively, and either state can be switched to the other by applying low-frequency pulse voltages. | |
| LCT2-3L
15:30 |
Improvement of the Viewing Angle of UV2A Mode Based on IGZO Yuan Hui Guo1, *Jun ying Xiao1, Lei Liu1, Cong Zhang1, Ming Zhi Nan1, Yu Jie Gao1, Yan Ping Liao1 1. BOE technology Group Co. Ltd (China) |
| A novel pixel design, including tuning the thickness of passivation layers, changing pre-tilt angle by new PI material, and optimizing the traditional pixel layout, was used to reduce oblique-view gamma distortion, which is beneficial to skin color washout. As a result, the color shift of L0, skin color and L255 of 85 inch 4K were improved apparently. | |
| LCT2-4L
15:50 |
Elimination of Halo mura in homogeneous alignment liquid crystal displays based on dichroic absorption *Junho Jung1,2, Yeon Jin Han1, Hyun Soo Jeon1, Young Jin Lim1, Dong-Jin Lee2, GwangTae Kim2, JeongKi Park2, MinSu Kim1, Seung Hee Lee1 1. Jeonbuk National University (Korea), 2. LG Display (Korea) |
| Local dimming enables us to achieve high dynamic range in LCDs, but can cause halo mura. In this study, we demonstrate vertically aligned dichroic dye film in unit cells which absorb light in oblique angles to eliminate halo mura. Placing this film above an analyzer significantly enhances local contrast ratio (CR) in oblique views and minimizes surface reflection in all LCDs. |
LCT3: Low-Power Consumption and Privacy LCDs
Dec. 6 16:40-18:00 Snow Hall B
Chair: Shinichiro Oka (Japan Display)
Co-Chair: Masaru Inoue (TOYOTech)
| LCT3-1
16:40 |
Invited Flicker-free 1 Hz Fringe-Field Switching Liquid Crystal Display *MinSu Kim1, Junho Jung2,1, HanByeol Park1, Ha Young Jung1, DaYeon Lee1, Seung-Hwa Baek2, Dong-Jin Lee2, Ki-Sun Kwon3, Heui-Seok Jin3, GwangTae Kim2, JungKi Park2, Seung Hee Lee1 1. Jeonbuk National University (Korea), 2. LG Display, Co., Ltd. (Korea), 3. Merck Performance Materials, Ltd. (Korea) |
| Introducing a 13.4-inch 1 Hz refresh rate FFS LCD laptop panel with outstanding image quality, no flickering, and 83% less power consumption compared to 60 Hz. This innovation ushers in a new era of energy-efficient FFS LCD technology. | |
| LCT3-2
17:00 |
Analysis of The Optical Path and Optical Specifications of Reflective LCD Hongyuan Xu1, *Lixue Yang1, Jing Liu1 1. TCL China Star Optoelectronic Technology Co, Ltd. (China) |
| Reflective LCD shows low power consumption, good outdoor visibility and user portability, which can be used as an ideal portable electronic device. In this paper, the optical path of VA, TN and FFS mode LCD is simulated by Poincaré sphere to illustrate how to realize reflective display. | |
| LCT3-3
17:20 |
Invited Design of Multi-Domain Transflective LCDs for Large-Sized Signage Applications *Akira Sakai1, Hiroyuki Hakoi1, Takashi Sato1, Kiyoshi Minoura1, Masaomi Kuwabara1, Masashi Otsubo1, Takashi Nakajima1, Kazuhiko Negoro1 1. Sharp Display Technology Corporation (Japan) |
| With the ongoing proliferation of large-sized digital signage applications, the demand for outdoor visible displays is growing rapidly. Consequently, reflective and transflective LCDs, which use ambient light for display, are gaining increasing attention. In this study, we review the design concept of multi-domain transflective LCDs using UV2A technology, which can provide good visibility at wide viewing angles under bright and dark ... | |
| LCT3-4
17:40 |
A Novel Dual-Cell Privacy LCD with Integrated Microstructure *Minglong Wang1, Wenqi Zhou1, Yan Yang1, Caijiao Zhong1, Guochang Lai1, Xianyan Yang1 1. Xiamen Tianma Microelectronics Co., Ltd (China) |
| This paper introduces a privacy LCD, which can be electrically switched between wide viewing angle mode (share mode) and narrow viewing angle mode (privacy mode). The structure is mainly composed of a display cell, a viewing angle switching cell, and a light control film. Microstructure is added to the viewing angle switching cell. It can provide switching between privacy and share mode through different excitation ... |
LCT4: Analyses and Novel LCDs
Dec. 7 9:00-10:20 Snow Hall B
Chair: Koichi Miyachi (JSR)
Co-Chair: Yukio Hirano (JNC Petrochemical)
| LCT4-1
9:00 |
A Novel LCD without PI Process *Min Li1, Xiaoli Yang1, Kaijun Liu1, Yang Pu1, Jeff Chou1, Jinn Hung1, James Hsu1, Wade Chen1 1. Chongqing HKC Optoelectronics Technology,Co., Ltd (China) |
| In this paper, we reported a novel 32-inch LCD manufactured by G8.6 without PI process. The color chromaticity, color gamut and IS of PI-less LCD were nearly the same as traditional LCD. Besides, it can reach a 6.83%Tr (3.06% increase than traditional LCD), and 5313:1 contrast ratio(21.05% increase than traditional LCD). | |
| LCT4-2
9:20 |
Invited Application of Liquid Crystal Display Technologies to Dye-Sensitized Solar Cell *Uran Sato1, Atsushi Fukui1, Hirokazu Ichinose1, Kei Ogiya1, Yuki Kyoda1, Tomohisa Yoshie1, Makoto Izumi1, Kazushi Tsuji2, Tomonari Ikeda2, Bungo Kato2, Tomohiro Kimura2, Kiyoshi Minoura2 1. Sharp Corporation (Japan), 2. Sharp Display Technology Corporation (Japan) |
| We have developed the dye-sensitized solar cell (DSSC) with the Liquid Crystal Display (LCD) technology, which called LC-LH (Liquid and Crystal - Light Harvesting). We would show that LC-LH has higher conversion efficiency than the conventional type DSSC due to the new structure discovered by LCD technologies, and could enable further expansion of the market. | |
| LCT4-3
9:40 |
Analysis of IC Side Image Sticking Mechanism and Countermeasures *Meihong Lin1, Yanping Yu1, Yuhong Tong1, Caijiao Zhong1, Guochang Lai1, Xianyan Yang1 1. Xiamen Tianma Microelectronics Co., Ltd (China) |
| Image sticking has always been one of the pain points in panel manufacturing. In this study, mechanism of IC side artifacts on commonly used small size liquid crystal displays (LCD) screens during image sticking reliability test at room temperature was analyzed and experimentally verified, and some improvement measures were proposed. | |
| LCT4-4
10:00 |
Measurement and Characterization of Mini-LED Backlit LCD Halos *Nailong He1, Yuning Zhang1, Chenyu Huang1, Wei Wang1, Qiong Liu2, Jiaqing Zhuang3, Haikun Liu3 1. Southeast University (China), 2. Suzhou China Star Optoelectronics Technology Co., Ltd. (China), 3. National Center of Technology Innovation for Display, Guangdong Juhua New Display Research Institute (China) |
| According to the characteristics of the halo, we first establish the objective measurement method, analyze the brightness distribution of the halo, and further analyze its influence mechanism. Therefore, the evaluation experiment and the characterization method of intense halo are designed, which can help to establish the evaluation standard of Mini-LED backlight LCD. |
INP2/LCT5: Biomedical Imaging and Its Possibility Using Liquid Crystal Technology
Dec. 7 10:50-12:10 Marine Hall
Chair: Nobuyuki Hashimoto (Japan Women's Univ.)
Co-Chair: Hiroshi Haga (Tianma Japan)
| INP2/LCT5-1
10:50 |
Invited Liquid Crystal Devices for Controlling Laser Light and Advanced Multi-Photon Microscopy Imaging *Tomomi Nemoto1,2, Hirokazu Ishii1,2, Kohei Otomo1,2 1. National Institute of Natural Sciences (Japan), 2. National Institute for Physiological Sciences (Japan) |
| Two-photon excitation fluorescence microscopy is a robust technique for understanding physiological phenomena from the cellular to the tissue level, attributable to the nonlinear excitation process induced by near-infrared ultrashort laser light pulses. By taking advantage of liquid crystal devices, we have successfully improved the fluorescent signal and the spatial resolution. | |
| INP2/LCT5-2
11:30 |
Invited Current and Emerging Imaging Applications in Pathology: From Microscopy to Digital Pathology, Clinical Perspectives *Riuko Ohashi1 1. Niigata University (Japan) |
| Pathology is the study of the causes and consequences of disease or injury and those morphological, functional, and molecular changes. In clinical practice, pathologists diagnose macroscopic, microscopic, and molecular changes in diseases or injuries of patients, contributing to treatment decision-making and assessments of the efficacy or effectiveness of therapies, including surgery and drugs. In this talk, I will present an overview of the current imaging ... |
INP3/LCT6: 3D Information Input and Display Using Liquid Crystal Technology
Special Topic of Interest on AR/VR and Hyper Reality
Dec. 7 13:30-14:30 Marine Hall
Chair: Nobuyuki Hashimoto (Japan Women's Univ.)
Co-Chair: Kazunori Imoto (Toshiba)
| INP3/LCT6-1
13:30 |
Invited Incoherent Digital Holography Aiming to Capture Three-Dimensional Video *Tetsuhiko Muroi1, Teruyoshi Nobukawa1, Yutaro Katano1, Kei Hagiwara1 1. Japan Broadcasting Corporation (Japan) |
| Incoherent digital holography (IDH) enables the acquisition of holograms using incoherent light sources. To capture videos, it is necessary to simultaneously capture holograms with different phase shifts. In this paper, we present an approach to IDH that utilizes a spatially parallel phase-shifting method for the simultaneous capture of holograms. | |
| INP3/LCT6-2
13:50 |
Pixel-wise Phase-shifting Incoherent Digital Holography with a Liquid Crystal Lens *Teruyoshi Nobukawa1, Masahiro Usui1, Yutaro Katano1, Masahide Goto1, Kei Hagiwara1, Tetsuhiko Muroi1 1. Japan Broadcasting Corporation (Japan) |
| Pixel-wise phase-shifting incoherent digital holography with a liquid crystal lens is proposed and demonstrated. The system incorporates the linear birefringence property of the lens to introduce shear for self-interference. Proof-of-principle experiments confirm the 3D imaging capability of the prototype system under incoherent light. | |
| INP3/LCT6-3
14:10 |
Invited Realistic AR 3D Displays without AC Conflict *Yan Li1, Shuxin Liu1, Bo Wang1 1. Shanghai Jiao Tong University (China) |
| Virtual reality (VR) and augmented reality (AR) technologies are gaining ever-increasing attention. However, there is vergence-accommodation conflict problem for most VR or AR 3D displays, causing visual fatigue. We propose solutions to realize realistic AR 3D displays without AC conflict based on liquid crystal devices and metasurfaces. |
LCT7/FMC7: AR/VR Displays and Optics
Special Topic of Interest on AR/VR and Hyper Reality
Dec. 7 15:20-16:40 Snow Hall B
Chair: Yan Li (Shanghai Jiao Tong University)
Co-Chair: Toshiyuki Endo (Nissan Chemical Corporation)
| LCT7/FMC7-1
15:20 |
Invited 2117-ppi Ultra High Resolution 4K Low Power VR LCD *Chia Hao Tsai1, Yung Hsun Wu1, Yi Hsiu Wu1, Yi Shiuan Cherng1, Potilar Huang1, I An Yao1, Chiu Lien Yang1 1. Innolux Corporation (Taiwan) |
| We demonstrate a mini-LED backlit 4K LCD for virtual reality displays, which greatly enhances the dynamic range and mitigates the screen door effect. The major challenges, particularly power issues, for achieving 4K LCDs and the advantages of using new design and driving will be discussed thoroughly. | |
| LCT7/FMC7-2
15:40 |
Invited Double Path Pancake Optics for HMD to Improve Light Efficiency *Takehisa Yoshida1, Naru Usukura1, Kiyoshi Minoura1, Yoshiko Honma2 1. Sharp Display Technology Corporation (Japan), 2. Kantatsu Corporation (Japan) |
| We proposed novel pancake-based optics for HMD named “Double path pancake optics” to achieve both compactness and high light efficiency simultaneously. We made the prototype and our result demonstrated 25.5 mm thickness of optics and 1.8 times higher light efficiency compared to that of conventional one. | |
| LCT7/FMC7-3
16:00 |
Invited High Performance Displays for Future VR *Yun Wang1, Fenglin Peng 1, Xingzhou Tu1, Ying Geng1, Jacques Gollier1, Barry Silverstein1 1. Meta (United States of America) |
| LCD is one of the major display solutions for VR headsets due to its maturity. Here we will present a new LCD architecture as a key element to enable glasses-like form factor. In addition, it can improve optical efficiency, enlarge color gamut and overall image quality |
LCT8/FMC8: LC Technologies for 5G/6G
Dec. 7 17:10-18:30 Snow Hall B
Chair: Hiroyuki Okada (Univ. of Toyama)
Co-Chair: Atsuko Yamamoto (Merck Electronics Ltd. )
| LCT8/FMC8-1
17:10 |
Invited Intelligent Reflecting Surface Based on LCD-TFT Technology for 47 GHz Radio Waves *Kazuki Matsunaga1, Mitsutaka Okita1, Daiichi Suzuki1, Kiyoshi Tamura1, Takanori Tsunashima1, Shinya Asakura1, Masayuki Ikari1, Daijiro Takano1, Shinichiro Oka1 1. Japan Display Inc. (Japan) |
| High-frequency-band wireless systems have attracted increasing interest. In this study, we develop intelligent reflecting surface (IRS) using liquid crystals (LCs), which can be a key component of mobile communications. The effects of the physical properties of LCs on the IRS are numerically investigated. We verified the consistency with measurement results. | |
| LCT8/FMC8-2
17:30 |
Invited Electrospun-aligned Microfiber Composite with Liquid Crystal for Terahertz Wave Variable Phase Shifters *Hiroshi Moritake1, Yo Inoue1, Trong Nghia Lang1 1. National Defense Academy (Japan) |
| We propose aligned microfibers as an effective method for solving the problem of the long decay time and introduce a novel design for a 100 GHz band THz wave phase shifter that can directly connect to the THz wave source. Furthermore, its response characteristics will also be discussed in detail. | |
| LCT8/FMC8-3
17:50 |
Withdrawn |
| LCT8/FMC8-4L
18:10 |
Electrically Tunable Liquid Crystal Device Using Ultra-Thin Aluminum Transparent Electrodes in THz Region *Keita Mashiyama1, Ryota Ito1, Michinori Honma1, Toshiaki Nose1 1. Akita Prefectural University (Japan) |
| In this study, we introduce ultra-thin aluminum film as a new transparent electrode in the liquid crystal device for THz wave. The transmittance of the THz wave increases by controlling the surface structure of Al films. Furthermore, we achieve an electrically phase-tunable LC device using ultra-thin aluminum electrodes. |
LCT9: Emerging Materials and Applications
Dec. 8 9:00-10:20 Snow Hall B
Chair: Michinori Honma (Akita Pref. Univ.)
Co-Chair: Fumito Araoka (RIKEN)
| LCT9-1
9:00 |
Invited Sunroof with Flexible Dye-doped Liquid Crystal Dimming Film *Juan Chen1, Chunlei Wang1, Zhi Hou1, Che Chun Che3, Chang Yin Wang1, Peng Liang2 1. BOE Since Technology Co., Ltd. (China), 2. BOE Technology Co., Ltd. (China), 3. BOE Sensor Technology Co., Ltd. (China) |
| For new energy electric vehicles, due to the space occupying of the battery, sunshades cannot be installed, so the demand for dimming sunroof from customers is increasing. In this article we mainly talk about process and device of laminated sunroof with flexible dye-doped liquid crystal dimming film. | |
| LCT9-2
9:20 |
Alternative Approach for Finding the Structural Information of Heliconical Structures of Chiral Nematics via Image Colors *Chi-Tang Huang1, Chin-Jung Chiu1, Cheng-Kai Liu1, Ko-Ting Cheng1 1. National Central University (Taiwan) |
| We propose a method to reveal the relation between heliconical structures and the corresponding image colors. Experimental results show that the variations of heliconical structures depend on the modulation process of applied fields. Without using complicated/expensive techniques, the method can be adopted to analyze the structural information of heliconical structures. | |
| LCT9-3L
9:40 |
Advanced Liquid Crystals with Low Loss Tangent and Fast Response for Intelligent Reflecting Surface Antennas *Toru Fujisawa1, Hiroyasu Sato1, Wataru Ishikawa1, Hiraku Toshima1, Yasuo Yamamoto1, Masakazu Nakatani1, Takahiro Ishinabe1, Hideo Fujikake1, Qiang Chen1 1. Tohoku University (Japan) |
| We investigate liquid crystals to be suitable for a reflective antenna. The method for evaluation of liquid crystals in gigahertz is presented. Low loss tangent reaching closely to 0.01 and short decay time in switching response were achieved simultaneously by introducing compounds having para-terphenyl group without polar groups. | |
| LCT9-4L
10:00 |
Machine Learning Model of Liquid Crystal Cell Controllable by Design Parameters *Makoto Watanabe1,2, Reo Otsuki1, Kiyoshi Kotani1, Yasuhiko Jimbo1 1. The University of Tokyo (Japan), 2. Silvaco Japan Co., Ltd. (Japan) |
| Using one of the machine learning methods “Reservoir computing”, we developed a macro model of liquid crystal cells that follows changes in design parameters. Higher accuracy was obtained by setting the hyperparameters appropriately. This model can be trained very fast, making it suitable for further design space expansion. |
FMC10/LCT10: Optical Materials
Dec. 8 13:30-14:50 Marine Hall
Chair: Daisuke Ogomi (Nitto)
Co-Chair: Hiroyuki Yoshida (Osaka University)
| FMC10/LCT10-1
13:30 |
Invited Development of New Polarizer System to Enhance Contrast and Light Efficiency *Ryosuke Saigusa1, Akira Sakai1, Yuichi Kawahira1, Masahiro Hasegawa1, Jianeng Xu1, Kiyoshi Minoura1 1. Sharp Display Technology Corporation (Japan) |
| We developed two new polarizer system. One system realizes an 17% increase in on-axis contrast. Another realizes an 8% increase in on-axis brightness and on-axis contrast. Moreover, we improved color shift at deep polar angle by optimizing the design of additional retarder. These effects are achieved by suppressing unwanted oblique light by simply changing film configuration of bottom polarizer. These technologies can be easily introduced. | |
| FMC10/LCT10-2
13:50 |
Color Mura Compensation by Random Depolarization Film *Shizuki Sasaki1, Yasuhiro Koike1 1. Keio University (Japan) |
| A display using polymer films with a slight amount of birefringence exhibits color mura at oblique angles. Our random depolarization film (RDF), a polymer film doped with birefringent particles, compensated for the color mura by randomizing the polarization. | |
| FMC10/LCT10-3
14:10 |
Experimental Demonstration of Stability of Silica-based Planar Lightwave Circuit for Medium Power RGB Laser Sources *Yuji Fujiwara1, Satomi Katayose1, Junji Sakamoto1, Takeshi Umeki1, Toshikazu Hashimoto1 1. NTT Corporation (Japan) |
| We experimentally confirmed the stability of a zirconium-doped silica-based planar lightwave circuit, resisting refractive index changes after 2000 hours with over 30 milliwatts of blue-light input. For RGB coupler use, we expected that the PLC can output medium power (about 65 milliwatts) of blue-light power for 10,000 hours. | |
| FMC10/LCT10-4
14:30 |
Broadband Reflection in Cholesteric Liquid Crystals Using a Polymer-Separated Double-Layer Structure *Yu-Chieh Chang1, Chun-Chuan Wang1, Kuan-Wu Lin1, Chun-Ta Wang1 1. National Sun Yat-Sen University (Taiwan) |
| By irradiating polymer-cholesteric liquid crystal (CLC) composites with UV light, a polymer-separated double-layer structure is formed due to the inhomogeneous polymerization reactions of polymers in the upper and lower spaces. This double-layered cholesteric structure with two reflection bands makes it possible to broaden the reflection bandwidth in CLCs. |
LCTp1: LC Optics and Display Devices
Dec. 8 11:10-12:30 Exhibition Hall B
| LCTp1-1 | Analysis and Improvement of Static Pressure Color Spot of LCD Display Lysis and Improvement of Static Pressure Color Spot of LCD Display *Wu Shuang1, Stefan Tsai1, Smart Chung1, Wang Xingang1, Zhang Shaonan 1 1. InfoVision Optoelectronics (Kunshan) Co., LTD (China) |
| When doing the static pressure test of the whole LCD display, the liquid crystal display is easy to produce light leakage and form different forms of color spots after being squeezed by external force. In this paper, the causes of hydrostatic color spots in 12 inch FFS products are analyzed, and it is found that the causes of color spots are caused by PS scratches on ... | |
| LCTp1-2 | Improvement of the Bubble Defect in Ultra-high Brightness Outdoor Display *Xiaoping Yu1, Zhiwei Tan1, Ning Zhang1, Shi Tang1 1. TCL China Star Optoelectronics Technology Co., Ltd. (China) |
| Bubble is discovered during the reliability test of ultra-high brightness outdoor display. The main factor is the thermal stability of color filter materials. By optimizing the density of “gas hole” and membrane structure of passivation film, bubble defect is significantly improved. Meanwhile, suggestions of design and material selection are proposed. | |
| LCTp1-3 | The Solutions of Push Mura for VA Type Liquid Crystal Display *Shuai Shi Huang1 1. Chuzhou HKC Optoelectronics Technology Co. Ltd. (China) |
| The push mura is a common and unavoidable issue in the field of Liquid crystal display (LCD). This issue is difficult to solve, it can only be alleviated .By experimental data, simulation data and improvement results in this paper, the key factors and new design can be defined. | |
| LCTp1-4 | On the Improvement of Color Mura Driven by Triple-Gate in TFT LCD Display *Hongyan Chang1 1. Chuzhou HKC Optoelectronics Technology Co. Ltd (China) |
| In this paper, we mainly study the production mechanism of color mura of Triple-gate driven products in liquid crystal displays, and how to improve color mura from three aspects of design, manufacturing process and code modulation, so as to enhance the display taste of liquid crystal displays. | |
| LCTp1-5 | Two Kinds of Pixel Designs for Improving the 2 Domain Viewing Angle *Haiyun Wang1, Jing Liu1, Yulu Zhang1 1. CSOT (China) |
| To improve the viewing angle of 2-domain displays, two kinds of pixel designs were carried out, namely vertical ITO slit or with ITO differentiated design. Compared with the traditional 2-domain displays, the horizontal CESI viewing angle with two designs are increased 42° and 12°, respectively. | |
| LCTp1-6 | A Novel Vertical Tri-Gate Pixel Structure for Liquid Crystal Display *Shuaichen Si1, Bichan Zhao1, Dexuan Huang1, Deng Ao1, Jinfeng Liu1, Jun Li1, Fen Long1, Yanjun Song1, Mingzhong Zhou1 1. TCL Guangzhou China Star Optoelectronics Technology Co (China) |
| In this work, we innovatively proposed the vertical tri-gate structure. The character zigzag can be obviously suppressed and the color deviation can also be eliminated by adjusting the drive sequence of sub-pixel. Our work provides a design idea for realizing low-cost and high specification LCD. | |
| LCTp1-7 | An a-Si Incell Touch Notebook Display Screen That Supports Active Pen Protocols *Minghu Deng1, Xinru Yao1, Zhaofeng Yan1, Binbin Li1, Fulin Tang1, Fen Long1, Yanjun Song1, Mingzhong Zhou1 1. TCL Guangzhou China Star Optoelectronics Technology Co (China) |
| A 14-inch wide WUXGA a-Si Incell Touch display screen that supports active pen protocols will be Shown in this paper. The panel uses self-capacitance touch technology powered by ADDI IC and mask reduction technology, and achieved the realization of a touch panel with a 240Hz Report Rate by pen. | |
| LCTp1-8 | Promising Picture Quality of Liquid Crystal Display Endowed by Glass-Based Mini-LED Backlight with Single-Layer Design *Jing Liu1, Qinsheng Chen1 1. TCL China Star Optoelectronics Technology Co., Ltd. (China) |
| A glass-based Mini-LED backlight with single metal layer design is introduced. To guarantee good picture quality, a 27-inch single glass substrate with 3600 LED dimming zones is designed. Combined with the LCD cell, the final 27 monitor set realizes promising picture quality. | |
| LCTp1-9 | Color Shift Problem Due to Viewing Angle During Black Display *Yu Kato1, Yusuke Bamba1 1. EIZO Corporation (Japan) |
| The color shift due to the viewing angle during black display has not yet been quantified and can only be evaluated subjectively. In this study, we show that even if the quantified evaluation criteria meet the required standards, the color shift is significantly different from panel to panel. | |
| LCTp1-10 | Investigation of Polar Alignment Properties of Ferroelectric Nematic Liquid Crystals with Twist / Planar Alignment in Bulk *Sakunosuke Abe1, Yosei Shibata1, Munehiro Kimura1, Tadashi Akahane1 1. Nagaoka University of Technology (Japan) |
| We found that the ferroelectric nematic liquid crystal encapsulated in antiparallel cells revealed alignment competition between the surface polar anchoring and bulk elasticity depending on the cell thickness. The assumption that the polar anchoring energy predominantly governs surface anchoring energy was well consistent with the explanation in our experimental study. | |
| LCTp1-11 | Advanced Thin-Film Polarizers and Their Applications *Yuechu Cheng1, Man-Chun Tseng1, Yeuk-Lung Ho1, Yi-Yang Gao1, Olena Vashchenko1, Valerii Vashchenko1, Shu-Tuen Tang1, Sze-Yan Yeung1, Hoi-Sing Kwok1 1. Hong Kong University of Science and Technology (Hong Kong) |
| This paper investigates the efficient fabrication strategies for high-performance ultra-thin polarizers utilizing photo-aligned azo-dyes. The fabricated polarizers demonstrates exceptional dichroism (DR>100), and superior polarization efficiency (PE>99%) with ultra-thin film thickness (200nm). Furthermore, we exhibit the wide-ranging applications of these ultra-thin polarizers in display technologies. | |
| LCTp1-12L | Thick LC Device Using Two-Directions Electric Field Driving For Millimeter Wave Reflect Arrays *Ryo Aoyanagi1, Masakazu Nakatani1, Takahiro Ishinabe1, Hiroyasu Sato1, Qiang Chen1, Hideo Fujikake1 1. Tohoku University (Japan) |
| We propose a two-directions electric field-driving method for thick-film liquid crystal devices for millimeter-wave phase modulation of reflect arrays. As a result, we show that it is possible to achieve a fast response of liquid crystal molecules and increase phase modulation due to electrode shape design and elastic orientation behavior. | |
| LCTp1-13L | Light-Scattering Liquid Crystal Device Using Ferroelectric Liquid Crystal for Visible Light Communication *Yukihiro Kudoh1, Yusei Shinozuka1, Taiju Takahashi1 1. Kogakuin University (Japan) |
| Our research focuses on developing low-power visible light communication technology for IoT applications by modulating ambient light through reflection using light-scattering LC devices. This paper primarily discusses fundamental investigations into voltage patterns applied to the device. | |
| LCTp1-14L | V-Shaped Front-Lit Structure with High Optical-Efficiency *jiyeon kim1, Min-Kyu Park1, Seon-Kyu Yoon1 1. Korea Photonics Technology Institute (Korea) |
| Augmented reality (AR) glasses have been researched in various research fields. In order to commercialize AR glasses, compact form-factor is necessary. Typical front-lit structure of LCoS micro-display have disadvantages for light-efficiency and form-factor. To improve the problems, we propose a new front-lit structure with thin formfactor and higher optical-efficiency. |
Workshop on Active Matrix Displays
| Dec. 6 | 14:50-16:10 | Room 201 | AMD1 | Sensing and Imaging Technologies |
| Dec. 6 | 16:40-18:00 | Room 201 | AMD2 | Oxide TFT (1) |
| Dec. 7 | 9:00-10:20 | Room 201 | AMD3 | Micro/Mini LED Display |
| Dec. 7 | 15:20-16:40 | Marine Hall | AMD4 | Advanced TFT Technology |
| Dec. 7 | 17:10-18:30 | Marine Hall | AMD5 | Oxide TFT (2) |
| Dec. 8 | 9:00-10:20 | Marine Hall | AMD6 | Oxide TFT (3) |
| Dec. 7 | 11:10-12:30 | Exhibition Hall B | AMDp1 | Active-Matrix Device (1) |
| Dec. 7 | 13:50-15:10 | Exhibition Hall B | AMDp2 | Active-Matrix Device (2) |
AMD1: Sensing and Imaging Technologies
Special Topic of Interest on Artificial Intelligence and Smart Society
Dec. 6 14:50-16:10 Room 201
Chair: Hideya Kumomi (Japan S&T Agency)
Co-Chair: Kenichi Takatori (Huawei Techs. Japan)
| AMD1-1
14:50 |
Invited Ultraviolet Photodetectors and Their Readout Realization for Future Active-Matrix Sensing *Yannick Schellander1, Maurice Schamber1, Fabian Munkes1, Robert Loew1, Patrick Schalberger1, Harald Kuebler1, Tilman Pfau1, Norbert Fruehauf1 1. University of Stuttgart (Germany) |
| Different types of ultraviolet photodetectors and their suitability for active-matrix sensing are discussed. Phototransistors are compared to photoconductors in terms of sensitivity, efficiency and response time. The photosensor readout is implemented by a transimpedance amplifier consisting of a-IGZO TFTs. Measurements with a 64-pixel array are shown to illustrate the applications. | |
| AMD1-2
15:10 |
Invited Heterojunction IGZO Phototransistors for Next-Generation Photodetectors and Image Sensors *Hang Zhou1, Tong Chen1, Xueqing Lv1 1. Peking University Shenzhen Graduate School (China) |
| Low-cost organolead halide perovskite materials, with their outstanding optoelectronic properties, provide new opportunities for developing highly sensitive photodetectors for various sensing scenarios. Heterogenous integration of oxide TFT with an organolead halide perovskite photoabsorbing layer is an attractive approach for developing low-noise high-sensitivity photodetectors. Here, the development of perovskite/IGZO heterojunction phototransistor is reviewed. The fabrication process of heterojunction phototransistor is compatible with conventional TFT manufacturing ... | |
| AMD1-3
15:30 |
Invited Neutron Imaging Performance at AIST: Insights into Current Status with Neutron Flat-Panel-Detector and IGZO-TFT *Takeshi Fujiwara1, Koichi Kino1, Masahito Tanaka1, Hiromi Kimura1, Nagayasu Oshima1 1. National Institute of Advanced Industrial Science and Technology (AIST) (Japan) |
| Neutron imaging serves as a powerful tool for non-destructive observation of the internal structures of objects. It provides valuable information that is not attainable through X-ray imaging techniques. In this study, we present the imaging performance of a neutron flat-panel detector (nFPD) utilizing an In-Ga-Zn-O (IGZO) thin-film transistor (TFT)/photodiode array, which is directly coupled with a scintillator sheet composed of LiF/ZnS(Ag) and ... | |
| AMD1-4L
15:50 |
Invited New Frontier in Display Technology: All-in-one Sensor Display *Seokgyu Yoon1, Min-Soo Choi1, Sung Wook Kim1, Hoilim Kim1, Dae-Young Lee1, Seunghyun Moon1, Kyung-Bae Park2, Jinsoo Jung1, Sunghan Kim1 1. Samsung Display Co. Ltd. (Korea), 2. Samsung Electronics Co. Ltd. (Korea) |
| The All-in-one Sensor Display in entire display area, we successfully fabricated organic photodetectors (OPDs) in the OLED panels with donor and acceptor materials. Since designing a donor material and an acceptor material is key issue for high Signal to Noise ratio (SNR), we designed and synthesized the D-01 and A-01. All-in-one Sensor Display showed good characteristics and successfully recognized fingerprints. This research shows the possibility ... |
AMD2: Oxide TFT (1)
Dec. 6 16:40-18:00 Room 201
Chair: Hiroki Hamada (Kindai Univ.)
Co-Chair: Keisuke Omoto (Apple)
| AMD2-1
16:40 |
Invited A Conductor-Based Thin-Film Transistor With No Apparent Channel for Simplified, High Aperture-Ratio Pixel Architectures Jiawei Zhang1,2, Joshua Wilson1, *Aimin Song1,2 1. University of Manchester (UK), 2. Shandong University (China) |
| A major bottleneck issue of oxide TFTs is the instability under bias stress and illumination. Furthermore, the current driving capability or carrier mobility is insufficient for high spec displays, forcing the introduction of expensive LTPO. Our recent work on ITO based source-gated transistors are reviewed which largely overcome these issues. | |
| AMD2-2
17:00 |
Spinel Single Phase Indium Zinc Tin Oxide Thin-Film Transistors with High Mobility and Excellent Uniformity *Gwang Bok Kim1, Jae Kyeong Jeong1 1. Hanyang University (Korea) |
| In this paper, we demonstrate successful growth of single spinel phase In0.22Zn0.55Sn0.23O1.34 films at 300 °C using meticulous cation composition design and catalytic chemical reaction. The devices exhibit an exceptional field-effect mobility of 83.2 cm2/Vs, along with outstanding reliability under external gate bias stress and excellent uniformity. | |
| AMD2-3
17:20 |
Ultrafast Magnesium Reaction-Induced Source/Drain for Short-Channel Top-Gate Self-Aligned Oxide Thin-Film Transistors *Jiye Li1, Yuqing Zhang2, Yuhan Zhang1, Dongxiang Luo3, Huan Yang1, Xinwei Wang1, Lei Lu1, Shendong Zhang1 1. Peking University (China), 2. Hong Kong University of Science and Technology (Hong Kong), 3. Guangzhou University (China) |
| Ultrafast magnesium (Mg) reaction-induced highly conductive amorphous indium-gallium-zinc-oxide (a-IGZO) source/drain(S/D) regions with a resistivity of 5.7 × 10-3 Ω·cm was achieved through 10-s rapid thermal annealing (RTA). This method demonstrated good electrical performance in self-aligned top-gate (SATG) thin-film transistors (TFTs), realizing the enhanced-mode TFTs with a sub-micron channel length. | |
| AMD2-4L
17:40 |
Invited Stability Issues in Oxide TFTs for Future Displays *Junghwan Kim1,2, Soohyun Kim1, Xuejian Zhang1, Minju Song1, Hideo Hosono2 1. Ulsan National Institute of Science and Technology (Korea), 2. Tokyo Institute of Technology (Japan) |
| In this work, we show a reason why high-mobility oxide TFTs tends to exhibit poor reliability such as NBTS and PBTS. It is revealed that the NBTS mechanism is mainly attributed to the Fermi level shift of active layer itself and it is highly dependent on the conduction band minimum location. Moreover, we show that the oxide semiconductors with higher mobility possess deeper CBM levels ... |
AMD3: Micro/Mini LED Display
Special Topic of Interest on Micro/Mini LEDs
Dec. 7 9:00-10:20 Room 201
Chair: Masahide Inoue (Huawei Techs. Japan)
Co-Chair: Goshi Biwa (Sony Semiconductor Solutions)
| AMD3-1
9:00 |
Invited Manufacturability of microLED on CMOS for Augmented Reality Glasses *Soeren Steudel1, Johan Vertommen1, Emmanuel Le Boulbar1, Giuseppe Buscemi1, Lars Bach1, Stefaan Van Huylenbroeck2, Shuo Kang2, Joeri De Vos2, Andy Miller2, Haris Osman2, Kenneth June Rebibis2 1. MICLEDI Microdisplay BV (Belgium), 2. imec (Belgium) |
| Volume manufacturability with good yield is the biggest challenge in moving microLED Microdisplays for AR from demonstrator to product. Here we review integration options and how they link with the AR specs. Finally, we provide an update on MICLEDI 300mm foundry integration flow for microLED displays. | |
| AMD3-2
9:20 |
Invited Advancing Transparent Micro-LED Display for XR Eyewear Kai-Ling Liang1,2, Chia-Hsin Chao1, Wei-Hung Kuo1, Hsueh-Chih Chang1, Han-Kuei Fu1, Chien-Chung Lin1,2, *Yen-Hsiang Fang1 1. Industrial Technology Research Institute (Taiwan), 2. National Taiwan University (Taiwan) |
| This article demonstrates a novel see-through optical module constructed with a transparent micro-LED display, metalenses, and optical sensor-based eye trackers. This module has the potential to significantly reduce the form factor of XR devices, thus promising a new avenue for the development of slim, lightweight Head-Mounted Displays (HMDs). | |
| AMD3-3
9:40 |
Invited Current Status of Quantum Dot Color Conversion for microLED Application *Zhongsheng Luo1, David Olmeijer1, Jeff Yurek1 1. Nanosys, part of Shoei Chemical (United States of America) |
| MicroLED commercialization faces two main challenges. Firstly, the red LED has low efficiency and high wavelength shift at small sizes. Secondly, transferring RGB color microLED is costly due to limited yield and high repair time. Quantum Dot Color Conversion (QDCC) addresses these challenges with high conversion efficiency and fast response. Ensuring QD stability under high blue-light excitation is a key challenge for commercializing QDCC in ... | |
| AMD3-4
10:00 |
Oxide Semiconductor Thin-Film Transistor-Based Micro-LED Pixel Circuit with External Sensing System *Hye-Won Woo1, Hwarim Im1, Kook Chul Moon2, Yong-Sang Kim1 1. University of Sungkyunkwan (Korea), 2. University of Gachon (Korea) |
| We propose an oxide semiconductor thin-film transistor-based micro light-emitting diode pixel circuit with an external sensing system. The proposed circuit expressed gray levels using pulse width modulation. We achieved stable operation using an external sensing system with an error rate lower than 1.1% under threshold voltage variations of ±1 V. |
AMD4: Advanced TFT Technology
Special Topic of Interest on Artificial Intelligence and Smart Society
Dec. 7 15:20-16:40 Marine Hall
Chair: Yosei Shibata (Nagaoka Univ. of Tech.)
Co-Chair: Hiromi Minemawari (AIST)
| AMD4-1
15:20 |
Invited Large Area Hexagonal Boron Nitride Sheet for 2D Electronic Devices *Hiroki Ago1 1. Kyushu University (Japan) |
| Multilayer hexagonal boron nitride (hBN) is very important for 2D materials research. Here I demonstrate our recent results on the CVD growth and transfer of large-scale multilayer hBN. Our hBN sheets significantly increased the carrier mobility of graphene when the graphene is sandwiched by the hBN. | |
| AMD4-2
15:40 |
Invited AI-Assisted Development of Solution-Processed Organic Transistors *Hiroyuki Matsui1 1. Yamagata University (Japan) |
| Here we show several artificial intelligence (AI)-assisted approaches to maximize the device performances in terms of semiconductor materials and printing conditions. | |
| AMD4-3
16:00 |
Metal Oxynitride Semiconductor for Ferroelectric HfZrOx Thin Film Devices *Yuseong Jang1, Seung Yoon Shin1, Soo-Yeon Lee1 1. Seoul National University (Korea) |
| We observed the mechanical confinement effect of low bandgap metal oxynitride semiconductor, known as oxygen vacancy (VO) free. Typical polarization-voltage (P-V) hysteresis curve was obtained by metal-ferroelectric-semiconductor-metal structure, and the endurance property was improved over metal oxide semiconductor. | |
| AMD4-4
16:20 |
Bias-Tunable Oxide-Based Phototransistors for Memory and Neuromorphic Applications *Jeehoon Kim1, San Nam1, Yong-Hoon Kim1 1. Sungkyunkwan University (Korea) |
| An inevitable wide bandgap nature of metal-oxide semiconductors generally prohibits their application in visible light-driven optoelectronic devices. Herein, a simple stack of TiO2 on IGZO was proposed to promote a wide spectral range absorption of light. Based on this, various applications such as memory and synaptic characteristics are demonstrated. |
AMD5: Oxide TFT (2)
Special Topic of Interest on Artificial Intelligence and Smart Society
Dec. 7 17:10-18:30 Marine Hall
Chair: Mutsumi Kimura (Ryukoku Univ.)
Co-Chair: Hiroshi Tsuji (NHK)
| AMD5-1
17:10 |
Invited Micro-LED Display Derived by High Mobility Metal Oxide Thin Film Transistor Doped with Praseodymium *Lei Wang1,2, Hua Xu2, Miao Xu1,2, Min Li2, Junbiao Peng1 1. South China University of Technology (China), 2. Guangzhou New Vision Opto-Electronic Technology Co., Ltd (China) |
| Praseodymium-doped indium zinc oxide (Pr:IZO) have been employed as the active layer of thin film transistors (TFTs). The Pr:IZO TFTs showed a high field effect mobility of 46.5 cm2/Vs and SS value of 0.23 V/decade. A prototype of micro-LED display was successfully fabricated based on the Pr-doping TFTs. | |
| AMD5-2
17:30 |
High Performance Thin Film Transistor Fabricated Using Solution-Processed Zinc-Tin-Oxide Channel Layer *Wun-Ciang Jhang1, Hsueh-Chih Chang1, Chih-Chieh Hsu1 1. National Yunlin University of Science and Technology (Taiwan) |
| In this study, a solution-processed zinc-tin-oxide (ZTO) thin film is used as a channel layer of a thin-film transistor (TFT). The fabricated ZTO TFT demonstrates remarkable electrical properties such as a high ION/IOFF ratio of 2.73 × 107 and high mobility (μ) of 5.58 cm2V-1s-1. | |
| AMD5-3
17:50 |
An a-IGZO TFTs Based Neuron Circuit with Threshold Voltage Variation Compensation for Artificial Neural Network *Yumin Yun1, Junhyeong Park1, Kyeong-Soo Kang1, Ji-Hwan Park1, Chanjin Park1, Soo-Yeon Lee1 1. Seoul National University (Korea) |
| This work proposes an amorphous indium-gallium-zinc-oxide (a-IGZO) thin-film transistors (TFTs)-based neuron circuit for artificial neural networks. By using the threshold voltage (VTH) compensation method, the proposed circuit prevents the inaccurate output of the activation function caused by the threshold voltage (VTH) variation due to fabrication fluctuation. | |
| AMD5-4L
18:10 |
Two Types of Correlation between Donor-level and Concentration in a-IGZO *Hanjun Cho1, Masatake Tsuji1, Junghwan Kim1,2, Hideo Hosono1,3 1. Tokyo Institute of Technology (Japan), 2. Ulsan National Institute of Science and Technology (Korea), 3. National Institute for Materials Science (Japan) |
| We propose the presence of oxygen-related acceptors in amorphous oxide semiconductors (AOS) based on a new finding of two types of correlation, positive and negative, between carrier concentration and activation energy, and HAXPES experiments. This finding was explained in terms of donor-donor and donor-acceptor interaction, leading to operation of TFTs. |
AMD6: Oxide TFT (3)
Dec. 8 9:00-10:20 Marine Hall
Chair: Susumu Horita (JAIST)
Co-Chair: Yujiro Takeda (Sharp Display Tech.)
| AMD6-1
9:00 |
Invited High Mobility Oxide TFT Using Poly-Crystalline Oxide Semiconductor on Gen.6 Glass Substrate *Masashi Tsubuku1, Hajime Watakabe1, Toshinari Sasaki1, Takaya Tamaru1, Marina Mochizuki1, Hiroyuki Kimura1, Emi Kawashima2, Daichi Sasaki2, Yuki Tsuruma1 1. Japan Display Inc. (Japan), 2. Idemitsu Kosan Co. Ltd. (Japan) |
| We have successfully developed stable poly-crystalline oxide semiconductor (Poly-OS) as channels of TFT on Gen.6 glass substrates. This technology has significantly improved mobility and stability at the same time, achieving both extremely low off-state current similar to conventional oxide TFTs and high on-state current equivalent to LTPS TFTs. | |
| AMD6-2
9:20 |
Invited 513-ppi OLED Display Using Vertical Oxide Semiconductor Transistor Motoharu Saito1, Hideaki Shishido1, Susumu Kawashima1, Shingo Eguchi1, Chieko Misawa1, Hidenori Mori1, Emi Koezuka1, Masataka Nakada1, Yukinori Shima1, *Koji Kusunoki1, Kenichi Okazaki1, Junichi Koezuka1, Norihiko Seo1, Shunpei Yamazaki1 1. Semiconductor Energy Laboratory Co., Ltd. (Japan) |
| We developed a vertical oxide semiconductor transistor (VFET) having a small footprint and a high on-state current, and fabricated a 513-ppi OLED display with an RGB stripe arrangement and an internal compensation pixel circuit. VFET is fabricated through a simpler process than LTPO FET and enables low-power and high-resolution displays. | |
| AMD6-3
9:40 |
Enhanced Electrical Performance and Bias Stability of Oxide Thin-Film Transistors via Bilayer Channel Engineering *Boyeon Park1, Donghyun Kang1, Yoon-Hoon Kim1 1. Sungkyunkwan University (Korea) |
| Here, we propose ZTO/Ti:ZTO heterojunction thin-film transistors (TFTs) to enhance both the electrical performance and bias stability of the device. To investigate the correlation of bilayer channel structure and device performance, various spectroscopic analyses were carried out including ultraviolet photoelectron spectroscopy. | |
| AMD6-4L
10:00 |
Improved Reliability of Plasma-Enhanced ALD-derived HfO2/IGZO Thin-Film Transistors *Cheol Hee Choi1, Jae Kyeong Jeong1 1. Hanyang University (Korea) |
| Mechanism of reliability in amorphous indium-gallium-zinc oxide (a-IGZO) thin-film transistors (TFTs) was investigated from the perspective of positive points defects in the HfO2 gate dielectric. Reducing positive point defects in HfO2 can improve the abnormal threshold voltage (VTH) shift of TFTs under positive gate bias temperature stress (PBTS). |
AMDp1: Active-Matrix Device (1)
Dec. 7 11:10-12:30 Exhibition Hall B
| AMDp1-1 | AM Mini-LED Backlight Unit with Low Power Consumption and 2,304 Dimming Zones for Ultra-High-Definition LCDs *Wanming Wu1,2, Youngjin Lim3, Chenghui Yan3, Di Geng1,2 1. Chinese Academy of Sciences (China), 2. University of Chinese Academy of Sciences (China), 3. Beijing Xianxin Technology Co., Ltd (China) |
| An active-matrix mini-LED backlight unit with 2,304 dimming zones and 16-bit gray levels for 85-inch ultra-high-definition LCDs has been demonstrated, in which single X-wire completes line addressing, dimming data transmission and voltage feedback for multiple dimmers on one wire. Thus, the system with an easily expandable layout can achieve high contrast ratio and low power consumption. | |
| AMDp1-2 | A Mini-LED Pixel Circuit Achieving Precise Control Capability of Emission Time with PWM Driving Method *Po-Huai Hsieh1, Sung-Chun Chen1, Yu-Chang Chiu1, Ming-Yang Deng2, Chih-Lung Lin1 1. National Cheng Kung University (Taiwan), 2. AUO Corporation (Taiwan) |
| This work presents a mini-LED pixel circuit with PWM control, addressing the issues of VDD I-R drop and VTH variation of driving and PWM control TFTs. Simulation results show the relative current error rates are below 4.04%, demonstrating the proposed pixel circuit is appropriate for the mini-LED displays. | |
| AMDp1-3 | Study on the Influence of Brightness Distribution on the MicroLED Display's Color Coordinate Correction *Bojia Lyu1,2, Jia Liu2, Shuang Zhao2, Zhiyong Xiong2, Xiaojun Guo1 1. Shanghai Jiao Tong University (China), 2. Shanghai Tianma Microelectronics Co., Ltd. (China) |
| In this paper, the color coordinate influence factor is disassembled as device characteristics and process, by comparing the color coordinate distribution data before and after brightness compensation for a 9.38-inch 480x960 resolution MicroLED display with the PAM driving mode and the emitting mode of 4 pulses 20% duty cycle. | |
| AMDp1-4 | Emission Gate Driver Generating Reliable and Adjustable Scan Signals for Micro-LED Displays *Cheng-Han Ke1, Yi-Chen Huang1, Ting-En Wei1, Ming-Yang Deng2, Chih-Lung Lin1 1. National Cheng Kung University (Taiwan), 2. AUO Corporation (Taiwan) |
| This work proposes an emission gate driver to generate adjustable scan signals. The reliability of emission scan signals can be enhanced by increasing the driving capability of TFTs and the stabilization period. Therefore, the proposed gate driver is feasible for micro-LED displays. | |
| AMDp1-5 | Pixel Circuit with Subthreshold Slope Compensation Using Double-Gate LTPS TFTs for OLED Displays *Jae-Young Heo1, Eunho Kim1, Hwarim Im1, Kook Chul Moon1, Yong-Sang Kim1 1. University of Sungkyunkwan (Korea) |
| We proposed a new pixel circuit using low-temperature polycrystalline silicon (LTPS) thin-film transistors (TFTs) with a double-gate structure. The simulation results show that the circuit initializes the nodes and compensates for nonuniformities well. Therefore, the circuit can be realized to organic light-emitting diode (OLED) displays with high resolution. | |
| AMDp1-6 | An LTPO-based AMOLED Pixel Circuit with VTH Compensation and Leakage Current Prevention for Use in Smartwatch Displays *Qing-Yu Zheng1, Jui-Hung Chang1, Chih-I Liu1, Po-Cheng Lai2, Yu-Hsien Lu1, Chih-Lung Lin1 1. National Cheng Kung University (Taiwan), 2. AUO Corporation (Taiwan) |
| An AMOLED pixel with an LTPO leakage prevention structure is proposed for use in low frame rate display. The maximum error rate is 3.13% at VDATA of 3.45 V when VTH is varied. Moreover, this circuit successfully suppresses the maximum variation under 0.691 nA during emission time of 66.67 ms. | |
| AMDp1-7 | Capacitorless 1-to-4 Sharing Architecture a-Si:H Gate Driver on Array with Bidirectional Function for TFT-LCD Application *Guang-Ting Zheng1, Po-Tsun Liu1, Wen-Hui Chih1 1. National Yang Ming Chiao Tung University (Taiwan) |
| In this paper, a novel gate driver using 8-phase clock signals with seven-eighths overlapping, capacitorless, 1-to-4 noise-free sharing architecture, and bidirectional scanning function are applied in the circuit design. The reliability verification result shows good performance after 800 hours stress at 85oC measurement. | |
| AMDp1-8L | 55-inch UHD Outdoor High-Brightness LCD *ZhiXin Sun1,2, Xu Wang2, XiaoJin He2, ZhiWei Tan2, ChunMing Liu2, ce Liang2, Hang Zhou1 1. Peking University Shenzhen Graduate School (China), 2. TCL China Star Optoelectronics Technology Co., Ltd. (China) |
| This work addresses the design and test of a 55-inch UHD high-brightness LCD product. The new pixel design improves the transmittance to 6%. The a-Si TFT has excellent light- and temperature-stability. The brightness of the display is up to 4000 nits, which is the brightest known 55-inch UHD LCD product. | |
| AMDp1-9L | Research on Multi-Frequency Display to Reduce Power Consumption *Lipeng Gao1, Yong Yu2, Hongjun Xie2, Lei Mi2, Cuili Gai3 1. Kunshan Govisionox Optoelectronics Co., Ltd. (China), 2. Hefei Visionox Technology Co., Ltd. (China), 3. Beijing Visionox Technology Co., Ltd. (China) |
| Multi-frequency driving panel was accomplished by using new scan circuit. IC power consumption can be reduced 29.4% in some image display. At last we discussed the effect of image quality with multi-frequency driving mode. | |
| AMDp1-10L | 240 Hz Frame Rate FHD AMOLED Cellphone Display Using LTPS TFT Backplane *Enqing guo1, Weiwei Liu2, Cuili Gai1, Junfeng Li1, Zidong Guo1 1. Visionox Technology Inc (China), 2. China Academy of Launch Vehicle Technology (China) |
| High frame rate cellphone displays could meet the visional response demand for the games to run. A totally new LTPS TFT pixel circuit design for high frame rate FHD plus AMOLED cellphone display was achieved in Visionox. The display demos exhibit excellent performances in brightness uniformity and short term image stick under 240Hz frame rate, which update a new frame rate record for FHD AMOLED ... | |
| AMDp1-11L | Effect of Barrier Layer Properties of LTPS TFT Devices on AMOLED Short-term Image Sticking Performance *Xuyang Zhang1, Fa-Hsyang Chen3, Zidong Guo1, Mengsen Wang1, Yinghai Ma2, Xiang Liu2, Rubo Xing1, Junfeng Li1 1. Hefei Visionox Technology Co., Ltd. (China), 2. Yungu (Gu'an) Technology Co., Ltd. (China), 3. Kunshan Govisionox Optoelectronics Co., Ltd. (China) |
| As evidenced by our correlation analysis, reducing barrier layer roughness enhances AMOLED short-term image sticking performance. The results of microwave photoconductivity and interface trap density test demonstrated an reduced defect state density of polysilicon as the roughness of barrier layer decreased, leading to improved short-term image sticking performance. | |
| AMDp1-12L | Enhancing the Properties of Flexible OLED Display by Back-Shield-Metal *Xue Liu1, Mengsen Wang3, Zidong Guo3, Yinghai Ma1, Fa-Hsyang Chen2, Xiang Liu1, Rubo Xing2, Junfeng Li2 1. Yungu (Gu'an) Technology Co., Ltd. (China), 2. Kunshan Govisionox Optoelectronics Co., Ltd. (China), 3. Hefei Visionox Technology Co., Ltd. (China) |
| The performance of flexible OLED display has been improved by using driver thin film transistors (DTFTs) with BSM, including lifetime and image sticking, which is mainly due to improvement of DTFT reliability. TCAD simulation shows that BSM can shield the charge from organic substrate, and enhance device stability significantly, thereby improves the flexible OLED display quality. |
AMDp2: Active-Matrix Device (2)
Dec. 7 13:50-15:10 Exhibition Hall B
| AMDp2-1 | High Current Stress Analysis for p-type LTPS Thin Film Transistor with Split Active Layer for High Current Driving AMOLED Display *Sabiqun Nahar Godhuly1, Sunaina Priyadarshi1, Abidur Rahaman1, Heonbang Lee1, MD Redowan Mahmud Arnob1, Jin Jang1 1. Kyung Hee University (Korea) |
| We have investigated the electrical performance of high current stress (HCS) generated heating effects in low-temperature polysilicon (LTPS) TFT, fabricated on a glass substrate, and compared the performance in conventional and active split ELA LTPS TFTs. The active split LTPS TFT showed stable performance compared with the conventional LTPS TFT. | |
| AMDp2-2 | An Empirical Analysis on Dimension Dependent Characteristics of Low Temperature Poly-Si Thin Film Transistors *MD Redowan Mahmud Arnob1, Md. Hasnat Rabbi1, Abul Tooshil1, Sabiqun Nahar1, Byeonggwan Kim1, Jin Jang1 1. Kyung Hee University (Korea) |
| This research exemplifies the significance of grain boundary trap states in Blue Laser Annealed-Low temperature polysilicon (BLA-LTPS) Thin Film Transistors (TFTs) which yield the device dimension-dependent characteristics. The underlying mechanisms were analyzed by extracting grain boundary trap densities using Levinson's plot. | |
| AMDp2-3 | Hot Implantation Method for Oxide Semiconductor Resistance Control Technique *Yuya Yamane1, Keisuke Yasuta1, Toshimasa Ui1, Junichi Tatemichi1 1. Nissin Ion Equipment Co., Ltd (Japan) |
| As a next-generation device process, Hot implantation method for oxide semiconductor resistance control technique were investigated. We carried out investigation of hot implantation in a-IGZO film on glass structure. As a result, we find a-IGZO sheet resistance drastically decrease and implantation process window enhancement. | |
| AMDp2-4 | High Performance Bilayer Stacked Oxide TFT Backplane for 14 inch Demux Driving Notebook LCD *Ming Jiue Yu1, Shi Min Ge1,2, Zi Kang Pan1, David Park1, Zhi Xiong Jiang1, Shan Li1, Zhong Jing Hsieh1, Jun Cheng Xiao1 1. Guangzhou China Star Optoelectronics Semiconductor Display Technology Co., Ltd (China), 2. Shenzhen Graduate School, Peking University (China) |
| Amorphous oxide semiconductor thin-film transistors (AOS TFTs) are increasingly utilized in displays. However, to achieve high mobility and good stability is a challenge. Here, we use the carrier/barrier bilayer stacked AOS TFTs to improve the mobility and stability. High mobility oxide is for better charge transport. rare-earth element doped oxide is used as the barrier layer, which substantially fastens the photoelectron recombination. The device ... | |
| AMDp2-5 | Influence of Gate Work Function on Electrical Characteristics of a-IGZO TFT with Field Plate Structure *Shou-An Hu1, Po-Hao Huang1, Chih-Chieh Hsu1 1. National Yunlin University of Science and Technology (Taiwan) |
| Effect of gate work function on threshold voltage, mobility, and sub-threshold swing of channel-passivated amorphous InGaZnO thin-film transistor with field plate structure is investigated. By analyzing the device performance and carrier concentration distribution, the related physical mechanisms are explored. An optimal TFT design is proposed. | |
| AMDp2-6 | Self-Heating Promotes Hot-Carrier Injection in Amorphous Indium-Gallium-Zinc Oxide Devices *Long Hao1, Wang Shuai-Yi1, Yan-Hong Meng1, Hang Wang1, Shan Li1, Jian-Feng Yuan1 1. Shenzhen China Star Optoelectronics Technology Co., Ltd (China) |
| Hot-carrier injection (HCI) promoted by self-heating (SH) effect was observed in amorphous Indium-Gallium-Zinc oxide (a-IGZO) devices. SH led to the decrease of drain current, while the HCI deteriorated subthreshold swing (ss). Obvious damage near drain caused by HCI was also observed. | |
| AMDp2-7 | Improvement in Bias Stability of Zinc Oxide Thin Film Transistor by Tin Doping *Ravindra Naik Bukke1, Jin Jang2, Rahul Kuamr Rai1 1. Indian Institute of Technology, Mandi (India), 2. Kyung Hee University (Korea) |
| We studied the tin (Sn) doping effect on the electrical properties of ZnO TFT fabricated by spray pyrolysis. The threshold voltage shift (DVTH) under positive bias stress improved significantly, and subthreshold swing (SS) decreased by incorporating the Sn ratio in ZnO TFT. | |
| AMDp2-8L | Development of High Mobility and Reliability Metal Oxide TFT *Guowen Yan1, Dejian Wang1, Lidong Ding2, Lin Xu2, Xiaoqi Sun2, Fa-Hsyang Chen2, Xiang Liu3, Rubo Xing2, Junfeng Li2 1. Hefei Visionox Technology Co., Ltd. (China), 2. Kunshan Govisionox Optoelectronics Co., Ltd. (China), 3. Yungu (Gu'an) Technology Co., Ltd. (China) |
| The high mobility TFTs of novel metal oxide were developed, the device shows high mobility ∼33cm2/Vs with Vth of 0.16V. The high mobility TFT has small Vth variation with channel length 3.5um on Gen. 6 glass, also shows small Vth shift under positive/negative bias temperature stress. | |
| AMDp2-9L | CMOS Based on Self-Aligned Cu-MIC Double-Gate Poly-Ge TFT on Glass Substrates *Sho Suzuki1, Akito Hara1 1. Tohoku Gakuin University (Japan) |
| SoG requires CMOS circuits on glass substrates. Ge has higher mobility and lower melting point than Si. In this study, n- and p-channel self-aligned double-gate poly-Ge TFTs are fabricated on glass substrates through Cu-MIC at 500 °C, and a CMOS inverter is fabricated by connecting these TFTs using wires. | |
| AMDp2-10L | Four-Terminal Poly-Si Vertical TFTs on Glass Substrates *Kosei Suzuki1, Kotaro Kusunoki1, Akito Hara1 1. Tohoku Gakuin University (Japan) |
| We fabricated n-ch four-terminals poly-Si vertical TFTs (4T VTFTs) on a glass substrate. The 4T VTFTs have a poly-Si crystallized by metal-induced crystallization. A double gate drive showed a superior on/off ratio and small s.s. compared with those of a single gate drive. In addition, we succeed in 4T operation. | |
| AMDp2-11L | The Effect of Poly Silicon Surface Roughness Reduction on LTPS Devices Applied to Flexible Displays *Bing Meng1, Guofei Kang1, Shengbing Li, Yonglei Xu, Jiachuan Liu, Yong Wang, Edward Lee, Min Zhang, Huanhuan Zhang, Xiang Liu 1. YunGu Gu'an Technology Co., Ltd. (China) |
| Low-temperature polycrystalline silicon(LTPS) devices can be used as core components of pixel drive circuits for active matrix organic light-emitting displays (AMOLEDs), Polycrystalline silicon(P-Si) film and device performance directly affect the display performance.In this paper, we optimize the ELA process and the thin film deposition process, develop ELA double scan to achieve the reduction of P-Si grain boundary height on polyimide substrates, and we ... |
Workshop on FPD Manufacturing, Materials and Components
| Dec. 6 | 13:00-14:20 | Marine Hall | FMC1 | Display Materials |
| Dec. 6 | 14:50-15:50 | Marine Hall | FMC2 | Materials and Manufacturing |
| Dec. 6 | 16:40-18:00 | Marine Hall | PRJ3/FMC3 | Automotive Display Technology |
| Dec. 7 | 9:00-10:00 | Room 301 B | FMC4 | Display Component |
| Dec. 7 | 10:50-12:10 | Room 301 B | FMC5 | Display Manufacturing |
| Dec. 7 | 13:30-14:50 | Room 301 B | FMC6 | Display Metrology |
| Dec. 7 | 15:20-16:40 | Snow Hall B | LCT7/FMC7 | AR/VR Displays and Optics |
| Dec. 7 | 17:10-18:30 | Snow Hall B | LCT8/FMC8 | LC Technologies for 5G/6G |
| Dec. 8 | 10:50-11:50 | Marine Hall | FMC9 | Meta Materials |
| Dec. 8 | 13:30-14:50 | Marine Hall | FMC10/LCT10 | Optical Materials |
| Dec. 8 | 15:20-16:20 | Marine Hall | FMC11 | FMC Late News |
| Dec. 8 | 9:20-10:40 | Exhibition Hall B | FMCp1 | Materials |
| Dec. 8 | 9:20-10:40 | Exhibition Hall B | FMCp2 | Display Materials and Manufacturing |
| Dec. 8 | 9:20-10:40 | Exhibition Hall B | FMCp3 | Display Optics and Measurements |
FMC1: Display Materials
Special Topic of Interest on Quantum Dot Technologies
Dec. 6 13:00-14:20 Marine Hall
Chair: Rumiko Yamaguchi (Akita University)
Co-Chair: Hiroki Iwanaga (Toshiba Corp.)
| FMC1-1
13:00 |
Invited Development of Eu (III)-β-Diketonates with Different Phosphine Oxide-Structures and their LED Applications *Hiroki Iwanaga1, Chingchun Huang1, Takeshi Hongo1, Atsushi Okuno2 1. Toshiba Corporation (Japan), 2. Green Planets Co., Ltd (Japan) |
| We have established a novel molecular design concept of Eu(III) complexes for enhancing red photoluminescence intensity and solubility. Many Eu(III) complexes have been developed along this concept. We implemented them in LED devices and succeeded in obtaining large emission intensity with much lower concentrations compared with a KSF phosphor. | |
| FMC1-2
13:20 |
Why Perovskite Quantum Dots Will be Key for LCD-, MicroLED- and OLED Displays *Norman Luechinger1 1. Avantama Ltd. (Switzerland) |
| In this presentation we give an overview about our perovskite QD solutions for miniLED backlight films (LCD displays) and also in-pixel QD converters for microLED displays and QD-OLED displays. The advantages of our perovskite QDs for all of these different display applications will be presented. | |
| FMC1-3
13:40 |
Fabrication of Quantum Dot LED Display with Multinary Compound Semiconductor Quantum Dots *Genichi Motomura1,2, Satoru Ohisa1, Taro Uematsu2, Susumu Kuwabata2, Tatsuya Kameyama3, Tsukasa Torimoto3, Yoshihide Fujisaki1 1. Japan Broadcasting Corporation (Japan), 2. Osaka University (Japan), 3. Nagoya University (Japan) |
| Quantum dot light-emitting diodes (QD-LEDs) were fabricated using multinary compound semiconductor QDs. The electroluminescence (EL) spectra of the RGB QD-LEDs indicated a significantly high color purity of 88% when compared to the BT.2020 standard. A passive-matrix QD-LED display that incorporated these QDs was also fabricated by ink-jet printing and exhibited clear moving images by passive matrix driving. | |
| FMC1-4
14:00 |
Novel Metal Halide Perovskite Quantum Dots and Their Application on 65-inch 4K TV *Chin-Yueh Liao1, Deng-Kai Chang1, Ching-Tung Wang1, Jung-An Cheng1, Ching-Liang Ko1, Ju-Yang Wang1, Yi-Hung Tsai1, Kuo-Chang Wang1, Yu-Fu Ko1, Chiang-Hung Tseng1, Tsung-Chien Chang1, Chuan-Fa Yeh1, Hsien-Bin Cheng1, Chun-Yun Pan1, Chan-Chih Hsieh1, Po-Chun Li2, Ling-Hsuan Chung2, Dong-Lin Cai2, Yi-Wei Hu2, Chun Che Lin2,3 1. Foxconn technology CO., LTD (Taiwan), 2. National Taipei University of Technology (Taiwan), 3. Research and Development Center for Smart Textile Technology (Taiwan) |
| Novel perovskite green quantum dots for LCD were demonstrated. Reliability tests based on optical thin films were addressed, and consequently 65-inch 4K TV embedded with the color conversion thin film, may reach excellent optical performance (PLQY>90%, FWHM<20nm, NTSC>110% and PL λmax:520± 2 nm) and more vivid color experiences. |
FMC2: Materials and Manufacturing
Special Topic of Interest on Micro/Mini LEDs
Dec. 6 14:50-15:50 Marine Hall
Chair: Toshiyuki Endo (Nissan Chemical Corporation)
Co-Chair: Kazuhiro Ohkawa (KAUST)
| FMC2-1
14:50 |
Invited Building Active Matrix MicroLED Displays by Additive Manufacturing (BAMBAM) - Paving the Way to a Sustainable Fine Pitch Video Wall *Emmanuel Fuchs1, Prasanna Ramaswamy2, Holger Baur3, Sławomir Drozdek4, Dave Keeshan5, Patrick Willem6, Arthur Moisset7, Christophe Linchenau1, Aymeric Dufauret1, Hugues Lebrun1, Davina Moodelly1, Elisabeth Jacquin1, Thibault Catelain1, Frédéric Vachelard1, Denis Groeninck1, Alin Fecioru2, Iwona Grądzka-Kurzaj4, Aneta Wiatrowska4, Clint Meyer5, Matt Meitl 5, Kai Waldner3, Norbert Fruehauf3, Mohammad Kiaee7, Igor Nakonechnyi7, Willem Walrevens7, Madeleine Vandenabeele6, Matthias Cosaert6 1. Aledia (France), 2. X-Celeprint (Ireland), 3. USTUTT (Germany), 4. XTPL (Poland), 5. XDisplay (Ireland), 6. Barco (Belgium), 7. QustomDot (Belgium) |
| BAMBAM project aims to showcase viability of an active-matrix µLED display through mass-transfer on a µPackage of 3 blue NanoWire µLEDs and a pixel driver, establishing connectivity by employing silver-based wire printing on the dies and PCB interconnections. The project focuses on incorporating a color conversion module utilizing patterned cavities and red and green quantum-dot inks, which offers sustainable digital pixel solution for high-resolution display. | |
| FMC2-2
15:10 |
Invited InGaN RGB Micro-LEDs for AR and VR Displays *Kazuhiro Ohkawa1 1. KAUST (Saudi Arabia) |
| The integration of monolithic red-green-blue (RGB) micro-LEDs will be a key technology to realize cost-competitive micro-LED displays. InGaN is the only material in blue and green LEDs. Therefore, the point is highly efficient InGaN red micro-LEDs. This paper focuses on InGaN red micro-LEDs as a key technology for next-generation displays. | |
| FMC2-3
15:30 |
Thin Film Photopatternable Quantum Dot Downconverters with High Optical Density *Yu Kambe1, Alexis Miranda1, Nisa Zaheer1, Rivi J. Ratnaweera1, Forrest Etheridge1, Colin Suits2,1, Marissa Tranquilli1, Richard Schaller4,5, Dmitri Talapin3,1, Yu Kambe1 1. NanoPattern Technologies (United States of America), 2. University of California, Berkeley (United States of America), 3. University of Chicago (United States of America), 4. Northwestern University (United States of America), 5. Argonne National Laboratory (United States of America) |
| We demonstrate a scalable fabrication method for microLED displays using photopatternable InP-based QDs. Using photosensitive ligands, we demonstrate pixel resolutions of 10 μm with EQE of >40% in <10 μm thickness. Accelerated reliability is measured and modeled to calculate an expected lifetime of >10k hours for direct-view microLED operating conditions. |
PRJ3/FMC3: Automotive Display Technology
Special Topic of Interest on Automotive Displays
Dec. 6 16:40-18:00 Marine Hall
Chair: Yosuke Asai (Panasonic)
Co-Chair: Hirotsugu Yamamoto (Utsunomiya University)
| PRJ3/FMC3-1
16:40 |
Invited Image Steering by MEMS SLM for Near-to-eye AR Display Engines *Yuzuru Takashima1, Parker Liu1, Ted Liang-tai Lee Lee1, Chuan Luo1, Brandon Friedman1, Gregory Nero1, Yexin Pei1, Tianyao Zhang1, Xianyue Deng1, Jeff Ching-wen Chan1, Eunmo Kang1, Jeff Chen 1 1. University of Arizona (United States of America) |
| Beam and image steering by Micro Electro Mechanical System (MEMS) spatial light modulators decouples trade-offs between resolution, field of view, and size of display panel and optics. MEMS based image steering solves optical design challenges commonly found in the Augmented Reality display engines. | |
| PRJ3/FMC3-2
17:00 |
Invited Laser Signal Projection for Effective Lane Change on Expressway *Makio Kurashige1, Shumpei Nishio1, Kazutoshi Ishida1, Osamu Shimada1, Shinsuke Nomura2 1. Dai Nippon Printing Co., Ltd. (Japan), 2. Hanshin Expressway Engineering Co., Ltd. (Japan) |
| For the purpose of reducing the traffic accidents at the construction zone of the expressway, “guiding arrows” on the road are realized by the laser signal projectors. The ratio of incoming vehicles was decreased from 13.9 % to 0.9 % by the combination with internally illuminated warning signs. | |
| PRJ3/FMC3-3
17:20 |
Deblur Image Processing System for Full Color Aerial Imaging Optics *Hayato Kikuta1,2, Masaki Yasugi2,3, Hirotsugu Yamamoto2 1. Mitsubishi Electric Corp. (Japan), 2. Utsunomiya University (Japan), 3. Fukui Prefectural University (Japan) |
| We propose an image processing system that corrects the blur peculiar to aerial images for each color wavelength. We construct a display environment for correcting the blurring during actual aerial imaging, and compare the blurring correction effect with the results of simulating image processing. | |
| PRJ3/FMC3-4
17:40 |
Aerial Guide Improves Sense of Floating of Aerial Image Formed with AIRR and Fresnel Lens *Shinya Sakane1,2, Shiro Suyama1, Hirotsugu Yamamoto1 1. Utsunomiya University (Japan), 2. Seiwa Electric Mfg. Co., Ltd. (Japan) |
| We introduce an aerial guide to make observers perceive the aerial image floating at a long range. The aerial guide is a frame that surrounds the aerial sign on the aerial image plane. Adding movement to the aerial guide was found to be more effective to give sense of floating. |
FMC4: Display Component
Special Topic of Interest on Automotive Displays
Dec. 7 9:00-10:00 Room 301 B
Chair: Kalil KÄLÄNTÄR (Global Optical Solutions)
Co-Chair: Karlheinz h Blankenbach (Pforzheim University)
| FMC4-1
9:00 |
Invited Thin and Low Power 2D-Backlight Module Development with White Mini-LEDs *Ryoji Yoshimura1, Takuya Nakabayashi1, Seitaro Akagawa1 1. Nichia Corporation (Japan) |
| In general, blue LEDs are used for mini-LED 2D Backlights. However, we have selected to use white LEDs and applied our new design concept, named Multi-Luminance Point Structure. As a result, we have achieved a lower power and thinner module with 1 LED per zone which is suitable for mobile products. | |
| FMC4-2
9:20 |
Invited Improvements for Automotive LCDs: Image Enhancement and Local Dimming (FALD) *Karlheinz h Blankenbach1, Nizar Tarabay2, Hyunjin Yoo2, Ingo Rothscholl3 1. Pforzheim University (Germany), 2. Faurecia IRYStec (Canada), 3. TechnoTeam Bildverarbeitung (Germany) |
| Automotive displays must fulfill high requirements including outstanding optical performance. We report on the reduction of power consumption by image enhancement improving bright readability and by local dimming of LCDs (FALD). We also address halo and non-uniformity effects for FALD, which reduce image quality, by measurements and thresholds for perception. | |
| FMC4-3
9:40 |
Glass QD Plate Development for Automotive Mini-LED BLU *Chong Xiong1, Yuquan Chen1, Xiaohu Liao1 1. WG-TECH (China) |
| A glass QD plate is proposed in this paper to automotive display mini-LED BLU. The glass QD plate consists of glass substrate, QD, OCA, cover glass. The glass substrate has groove matrix which is filled up with QD material. A 12.3-inch glass QD plate sample is produced and the RA test result shows it has good operation life. |
FMC5: Display Manufacturing
Dec. 7 10:50-12:10 Room 301 B
Chair: Takao Tomono (Toppan Printing)
Co-Chair: Yasuyuki Inoue (Corning Japan)
| FMC5-1
10:50 |
Invited ViP Technology Progress and Performance Improving in AMOLED *Yiming Xiao1, Zhendong Ding1, Yuan Yao1, Zengqiang Xia1, Xuejing Zhu1, Haohan Zhang1, Zhengkui Dong1, Bowen Yang1, Liusong Ni1, Yuting Fu1, Murong Xue1, Zhenhua Lou1, Yongqiang Du1, Hui Li1, Yiyou Lai1, CC Lee1, Xiujian Zhu2, Zhaoji Peng2, Deqiang Zhang2 1. Hefei Visionox Technology Ltd. (China), 2. Visionox Technology Inc. (China) |
| ViP (Visionox intelligent Pixelization) Technology is a novel RGB Self-Aligned Pixelization approach without Fine Metal Mask for OLED patterning. Since being released in May 2023, numerous breakthrough technical progress has been achieved. In this presentation, the recent results on panel performance and other advantages of ViP Technology will be discussed. | |
| FMC5-2
11:10 |
Micro Bumps by Gravure Offset Printing Method *Shunichi Haraguchi1, Chisato Oyama1, Kotarou Usuda1, Yoshihiro Ohyama1, Hideki Ikeda1 1. Komori Corporation (Japan) |
| Gravure offset printing succeeded in forming solder bumps with a minimum diameter of 6 μm within 5% errors. We obtained a design formula to optimize the cell shape of a gravure plate. Wider opening shape is especially suitable when the hole diameter of cell is φ10 μm or less. | |
| FMC5-3
11:30 |
Highly Conductive Metal Film Dry Etching via ECR Plasma Source *JinNyoung Jang1, Jong Hwa Lee1, Sangheon Lee2, Jae Hoon Jung1, Donghoon Kim3, MunPyo Hong3, Sang-Gab Kim4, Soo Ouk Jang5, Kiro Jung2, Chiwoo Kim2 1. APS Research (Korea), 2. APS Inc. (Korea), 3. Korea University (Korea), 4. Samsung Display Corporation (Korea), 5. Korea institute of Fusion Energy (Korea) |
| This paper presents PR masked thin Cu, ITO/Ag/ITO film dry etching performance that is etched by high electron temperature plasma source with low temperature substrate. Dry etching is performed using HCl gas, scanning low temperature susceptor and the electron cyclotron resonance (ECR) plasma produced by rectangular-type microwave slot antenna (ReSLAN) are used. | |
| FMC5-4
11:50 |
Fine Patterning of Cu and NiTi Metal Electrode by Reactive Proton Assisted Etching, with Application to High Resolution Stretchable AMOLED/AMLED *MunPyo Hong1, Minyoung Kim1, Donghoon Kim1, Jin Nyoung Jang2, Jong Hwa Lee2, Sangheon Lee2, Chiwoo Kim2, Sang-Gab Kim3 1. Korea University (Korea), 2. APS Research Corporation (Korea), 3. Samsung Display (Korea) |
| A fine patterning process is proposed for fabricating lower resistance-higher elastic bus-lines on stretchable TFT backplanes. The process involves the use of multi-layered electrodes comprising highly conductive Cu and super-elastic NiTi thin films, with line widths of <1 µm. To achieve precise and clean dry etching of these metal bus-lines, a novel dry etching process is developed, employing reactive proton assistance reaction at 50 ℃ |
FMC6: Display Metrology
Dec. 7 13:30-14:50 Room 301 B
Chair: Yukito Saito (Fujifilm)
Co-Chair: Makoto Omodani (Tokyo Denki University)
| FMC6-1
13:30 |
High-Resolution Aerial Image by Placing a Ball Lens at a Virtually Conjugate Position in AIRR Optical System *Kazuaki Takiyama1, Shiro Suyama1, Kenichiro Masaoka2,3, Hirotsugu Yamamoto1 1. Utsunomiya University (Japan), 2. NHK Foundation (Japan), 3. NHK Science & Technology Research Laboratories (Japan) |
| We propose an aerial imaging by retro-reflection (AIRR) optical system to form a high-resolution aerial image by placing a ball lens at a virtually conjugate position. The ball lens parallelizes the incident light on the retro-reflector. The modulation transfer function (MTF) of the proposed optical system is greatly improved. | |
| FMC6-2
13:50 |
Invited Electronic Tile as an Energy Saving Reflective Display Component for Wall Decoration *Makoto Omodani1, Hiroyuki Yaguchi1, Hiroki Kobayashi1 1. Tokyo Denki University (Japan) |
| We have prototyped 10 cm square e-Tiles using electrophoretic e-Paper and demonstrated 2 m square display using 400 e-Tiles. A hybrid color display system using e-Tiles and a projector was also proposed and demonstrated. The contrast enhancement effect, one of merits of this system, was evaluated theoretically and experimentally. | |
| FMC6-3
14:10 |
Metrology of Reflective Displays and Their Standardization *Kosei Oshima1 1. Otsuka Electronics Co., Ltd. (Japan) |
| An international standard, IEC 62977-2-8, focuses on the optical measurement methods for reflective displays. The underlying principles revolve around spectral considerations. To mimic real-world scenarios, reference illumination conditions are utilized, replicating both indoor and outdoor environments. The measurement techniques revolve around annulus aperture sources to determine the specular reflection properties. | |
| FMC6-4
14:30 |
Quantifying Measurement Field Contour for On/Off-Axis Metrology of Planar and Non-Planar Displays *K Käläntär1 1. Global Optical Solutions (Japan) |
| This paper analyses the impact of bending flexible OLED displays on their optical characteristics, extending previous research on light emission through substrates or superstrates. The study investigates the luminance measurement area and contour of planar, cylindrical, spherical, and conical OLED displays, theoretically assessing measurement errors and discussing the consequences. |
LCT7/FMC7: AR/VR Displays and Optics
Special Topic of Interest on AR/VR and Hyper Reality
Dec. 7 15:20-16:40 Snow Hall B
Chair: Yan Li (Shanghai Jiao Tong University)
Co-Chair: Toshiyuki Endo (Nissan Chemical Corporation)
| LCT7/FMC7-1
15:20 |
Invited 2117-ppi Ultra High Resolution 4K Low Power VR LCD *Chia Hao Tsai1, Yung Hsun Wu1, Yi Hsiu Wu1, Yi Shiuan Cherng1, Potilar Huang1, I An Yao1, Chiu Lien Yang1 1. Innolux Corporation (Taiwan) |
| We demonstrate a mini-LED backlit 4K LCD for virtual reality displays, which greatly enhances the dynamic range and mitigates the screen door effect. The major challenges, particularly power issues, for achieving 4K LCDs and the advantages of using new design and driving will be discussed thoroughly. | |
| LCT7/FMC7-2
15:40 |
Invited Double Path Pancake Optics for HMD to Improve Light Efficiency *Takehisa Yoshida1, Naru Usukura1, Kiyoshi Minoura1, Yoshiko Honma2 1. Sharp Display Technology Corporation (Japan), 2. Kantatsu Corporation (Japan) |
| We proposed novel pancake-based optics for HMD named “Double path pancake optics” to achieve both compactness and high light efficiency simultaneously. We made the prototype and our result demonstrated 25.5 mm thickness of optics and 1.8 times higher light efficiency compared to that of conventional one. | |
| LCT7/FMC7-3
16:00 |
Invited High Performance Displays for Future VR *Yun Wang1, Fenglin Peng 1, Xingzhou Tu1, Ying Geng1, Jacques Gollier1, Barry Silverstein1 1. Meta (United States of America) |
| LCD is one of the major display solutions for VR headsets due to its maturity. Here we will present a new LCD architecture as a key element to enable glasses-like form factor. In addition, it can improve optical efficiency, enlarge color gamut and overall image quality. |
LCT8/FMC8: LC Technologies for 5G/6G
Dec. 7 17:10-18:30 Snow Hall B
Chair: Hiroyuki Okada (Univ. of Toyama)
Co-Chair: Atsuko Yamamoto (Merck Electronics Ltd. )
| LCT8/FMC8-1
17:10 |
Invited Intelligent Reflecting Surface Based on LCD-TFT Technology for 47 GHz Radio Waves *Kazuki Matsunaga1, Mitsutaka Okita1, Daiichi Suzuki1, Kiyoshi Tamura1, Takanori Tsunashima1, Shinya Asakura1, Masayuki Ikari1, Daijiro Takano1, Shinichiro Oka1 1. Japan Display Inc. (Japan) |
| High-frequency-band wireless systems have attracted increasing interest. In this study, we develop intelligent reflecting surface (IRS) using liquid crystals (LCs), which can be a key component of mobile communications. The effects of the physical properties of LCs on the IRS are numerically investigated. We verified the consistency with measurement results. | |
| LCT8/FMC8-2
17:30 |
Invited Electrospun-aligned Microfiber Composite with Liquid Crystal for Terahertz Wave Variable Phase Shifters *Hiroshi Moritake1, Yo Inoue1, Trong Nghia Lang1 1. National Defense Academy (Japan) |
| We propose aligned microfibers as an effective method for solving the problem of the long decay time and introduce a novel design for a 100 GHz band THz wave phase shifter that can directly connect to the THz wave source. Furthermore, its response characteristics will also be discussed in detail. | |
| LCT8/FMC8-3
17:50 |
Withdrawn |
| LCT8/FMC8-4L
18:10 |
Electrically Tunable Liquid Crystal Device Using Ultra-Thin Aluminum Transparent Electrodes in THz Region *Keita Mashiyama1, Ryota Ito1, Michinori Honma1, Toshiaki Nose1 1. Akita Prefectural University (Japan) |
| In this study, we introduce ultra-thin aluminum film as a new transparent electrode in the liquid crystal device for THz wave. The transmittance of the THz wave increases by controlling the surface structure of Al films. Furthermore, we achieve an electrically phase-tunable LC device using ultra-thin aluminum electrodes. |
FMC9: Meta Materials
Dec. 8 10:50-11:50 Marine Hall
Chair: Takaaki Murakami (AGC)
Co-Chair: Masashi Miyata (NTT Device Technology Laboratory)
| FMC9-1
10:50 |
Invited Structural Color Filters Using Metamaterials and Their Applications *Yoshiaki Kanamori1 1. Tohoku University (Japan) |
| With the progress of microfabrication technology, industrial applications of structural color filters are attracting attention. Structural color filters and their applications based on dielectric metamaterials or plasmonic metamaterials, which have been developed in my research group, are discussed. | |
| FMC9-2
11:10 |
Invited Optical Metasurfaces Enabling Advanced Imaging *Masashi Miyata1 1. NTT Corporation (Japan) |
| This paper presents our recent studies on optical metasurfaces for advanced imaging devices and systems, starting with an overview of metasurface optics (or meta-optics), followed by meta-optics-based image sensors and cameras as its unique applications. | |
| FMC9-3
11:30 |
Invited UV stable High-Refractive Index Nanocomposites for Extended Reality (XR) *Craig Bandes1, Nicole Joud Tadros1, Peter Guschl1, Grace McClintock1, Serpil Gonen Williams1 1. Pixelligent Technologies (United States of America) |
| Nanoparticles such as TiO2 with high refractive-index of n∼2.0 in visible light are increasingly sought after for applications in XR waveguide designs for improving field-of-view. Our formulations with TiO2 nanocrystals can create diffractive optical elements and planarized films with n≅2.0 at 520 nm. With high-n by new nanocrystals using “Core-Shell” technology, we offer significantly improved resistance to near-UV and UVA ... |
FMC10/LCT10: Optical Materials
Dec. 8 13:30-14:50 Marine Hall
Chair: Daisuke Ogomi (Nitto)
Co-Chair: Hiroyuki Yoshida (Osaka University)
| FMC10/LCT10-1
13:30 |
Invited Development of New Polarizer System to Enhance Contrast and Light Efficiency *Ryosuke Saigusa1, Akira Sakai1, Yuichi Kawahira1, Masahiro Hasegawa1, Jianeng Xu1, Kiyoshi Minoura1 1. Sharp Display Technology Corporation (Japan) |
| We developed two new polarizer system. One system realizes an 17% increase in on-axis contrast. Another realizes an 8% increase in on-axis brightness and on-axis contrast. Moreover, we improved color shift at deep polar angle by optimizing the design of additional retarder. These effects are achieved by suppressing unwanted oblique light by simply changing film configuration of bottom polarizer. These technologies can be easily introduced. | |
| FMC10/LCT10-2
13:50 |
Color Mura Compensation by Random Depolarization Film *Shizuki Sasaki1, Yasuhiro Koike1 1. Keio University (Japan) |
| A display using polymer films with a slight amount of birefringence exhibits color mura at oblique angles. Our random depolarization film (RDF), a polymer film doped with birefringent particles, compensated for the color mura by randomizing the polarization. | |
| FMC10/LCT10-3
14:10 |
Experimental Demonstration of Stability of Silica-based Planar Lightwave Circuit for Medium Power RGB Laser Sources *Yuji Fujiwara1, Satomi Katayose1, Junji Sakamoto1, Takeshi Umeki1, Toshikazu Hashimoto1 1. NTT Corporation (Japan) |
| We experimentally confirmed the stability of a zirconium-doped silica-based planar lightwave circuit, resisting refractive index changes after 2000 hours with over 30 milliwatts of blue-light input. For RGB coupler use, we expected that the PLC can output medium power (about 65 milliwatts) of blue-light power for 10,000 hours. | |
| FMC10/LCT10-4
14:30 |
Broadband Reflection in Cholesteric Liquid Crystals Using a Polymer-Separated Double-Layer Structure *Yu-Chieh Chang1, Chun-Chuan Wang1, Kuan-Wu Lin1, Chun-Ta Wang1 1. National Sun Yat-Sen University (Taiwan) |
| By irradiating polymer-cholesteric liquid crystal (CLC) composites with UV light, a polymer-separated double-layer structure is formed due to the inhomogeneous polymerization reactions of polymers in the upper and lower spaces. This double-layered cholesteric structure with two reflection bands makes it possible to broaden the reflection bandwidth in CLCs. |
FMC11: FMC Late News
Dec. 8 15:20-16:20 Marine Hall
Chair: Genichi Motomura (NHK)
Co-Chair: Kalil KÄLÄNTÄR (Global Optical Solutions)
| FMC11-1L
15:20 |
Optical Z-Plate Compensation Film Manufactured by In-Plane Stretching Process to Improve Display Quality of OLEDs *Limin Sun1, Zhikuan Lu1, Lang Hu1 1. Akron Polymer Systems, Inc. (United States of America) |
| We designed and prepared a novel polymer composite incorporating a unique polyimide main chain. By stretching this composite film, its three-dimensional birefringence can be arbitrarily controlled. We report on the anti-reflection performance of a λ/4 waveplate of this novel composite, where nx>nz>ny, when it is mounted on an OLED display. | |
| FMC11-2L
15:40 |
Direct Patterning of Colloidal Indium Phosphide Quantum Dots via Photo Active Material Benzophenone *Boram Kim1, Mina Kim1, Heeyeop Chae1,2 1. Sungkyunkwan University (Korea), 2. Sungkyunkwan advanced institute of nanotechnology (Korea) |
| A solution-based process utilizing dibenzophenone (DIBP) has been developed to create quantum dot (QD) patterns. UV exposure of DIBP generates ketyl radicals that interact with QDs. These cross-linked QDs remain solvent-resistant while preserving their optical properties. Photo patterning leverages UV-induced solubility differences, successfully achieving a 50 μm line pattern | |
| FMC11-3L
16:00 |
Gamut Rings Color Scope for Signal Monitoring *Kenichiro Masaoka1,2 1. NHK Foundation (Japan), 2. NHK STRL (Japan) |
| Traditional chromaticity scopes and vectorscopes have limited ability to visualize color appearance attributes, which limits color grading and color correction. A new tool based on gamut rings can monitor the lightness, chroma, and hue distributions of the pixel colors of input images in a single 2D diagram. |
FMCp1: Materials
Special Topic of Interest on Artificial Intelligence and Smart Society
Dec. 8 9:20-10:40 Exhibition Hall B
| FMCp1-1 | Zinc Tin Oxide based Synaptic Transistors with Ion-Gel Gate Insulator for Neuromorphic Computing Application *Shao Shiun Liao1, Chen -Yu Hsu1, Yu -Wu Wang1 1. National Changhua University of Education (Taiwan) |
| Synaptic transistors based on Zinc-Tin-Oxide semiconductor with Ion-gel (PMMA+[EMIM][TFSI]) film as gate insulators and hexamethyldisilazane as barrier layer was investigated. The short-term plasticity characteristics are proved with strong correlation with drain voltage, pulse width, and interval time. The long-term potentiation characteristics was measured by fifty continuous gate pluses with constant drain voltage. The results reveal a possible solution to fabricate a realistic artificial ... | |
| FMCp1-2 | The Effect of the In2O3 Insertion Layer on HfO2/AlOX-Based Resistive Memory Characteristics *Minsik Kong1, Jiyong Shim1, Soo-Yeon Lee1 1. Seoul National University (Korea) |
| We fabricated HfO2/Al2O3-based RRAM structures with an inserted In2O3 layer and investigated the effect of oxygen vacancies by resistive switching measurement. By introducing In2O3 layer, we confirmed the incorporation of oxygen vacancies within the insulating layer of RRAM devices. This indicates that the presence of ... |
FMCp2: Display Materials and Manufacturing
Dec. 8 9:20-10:40 Exhibition Hall B
| FMCp2-1 | A Study of 1.0 µm Patterning for 2000 ppi Level High Resolution Panel *Jae Young Oh1, Nam-Yong Kim1, Go Eun Lim1, Seung Hee Nam1, Ji Yong Noh1, Kwon-Shik Park1, SooYoung Yoon 1 1. LG Display (Korea) |
| Fine patterning plays an important role in high-resolution mobile, VR and AR backplanes. For overcoming equipment limit, over-exposure method and i-line photoresist were applied. 1.0-µm metal layer with CV 15% for line/space and 1.0-µm inorganic layer with CV 14% for hole patterns were formed. We applied inclined 2-step slope to prevent un-filling holes. 4.3 inch panels with 2200 ppi and 1.0 µm patterning were demonsrtrated. | |
| FMCp2-2 | Improvement of the Bias Instability Characteristics Driven by Organic Film in IGZO TFT for OLED Back Plane *Yubeen Lim1, Ahrum Sohn1, Jung-June Kim1, Hanseok Lee1, Won-Sang Ryu1, Youn-Gyoung Chang1, Jiyong Noh1, Kwon-Shik Park1 1. LG Display (Korea) |
| Undesirable effects with signal interference between electrodes and TFTs could not be ignored in high-performance and various-function displays. Barrier layers are needed to prevent the interference from the touch-signal-layer electrodes in bottom-emission OLED backplanes. To improve abnormal behaviors of TFTs with SOG barrier layers under bias-temperature stresses, plasma treatment on SOG surface was conducted. We suggested one mechanism based on 4-probe transfer characteristics and XPS. | |
| FMCp2-3 | Wrap-Around Electrode Fabrication via Laser Ablation *Ya-Huei Chang1, Jie-Chi Chen2, Dih-Yang Kuo1, Kuan-Ting Kuo1, Rajesh Vaddi1, Sean M Garner1 1. Corning Incorporated (United States of America), 2. Industrial Technology Research Institute (Taiwan) |
| Wrap around electrodes with 50 um linewidth and 150 um spacing have been demonstrated on an as cut glass edge profile of Corning Lotus NXT glass with a thin film transistor array via a laser ablation approach. WAEs exhibit intact integrity of circuits, conformal deposition, and good adhesion. | |
| FMCp2-4 | Effect of Fluorine Plasma Treatment on IGZO TFT Stability According to the Channel Oxygen Vacancy Concentration *Jinsung Mok1,2, Jin-Kyu Lee1,2, Yuseong Jang1,2, Ji-Ho Lee1,2, Soo-Yeon Lee1,2 1. Seoul National University (Korea), 2. Inter-University Semiconductor Research Center (Korea) |
| We fabricated fluorine plasma-treated IGZO TFTs with various oxygen vacancy concentrations by adjusting the sputtering power during IGZO deposition. The dominant role of fluorine introduced by plasma treatment varied according to the channel's condition. The fluorine treatment effect on the TFT reliability was also examined. | |
| FMCp2-5 | LED Illumination System Used in FPD Exposure Tools *Kazuki Toyoda1, Kentaro Hiruma1, Daisuke Yasunaga1, Kazuyuki Kasumi1, Takayuki Hashimoto1, Katsutoshi Usui1, Ryosuke Fukuoka1, Manabu Hakko1, Keijiro Imai1, Takaaki Terashi1, Yoshinori Osaki1 1. Canon (Japan) |
| We developed illumination system using light emitting diode (LED) for flat panel display (FPD) exposure tools. The system can be used on Canon's FPD exposure tools by replacing some parts of its illumination system. Our new system improves productivity of FPD manufacturing. | |
| FMCp2-6 | Laser Crystallization of Amorphous Silicon via Spot Beam Annealing Method *JinNyoung Jang1, Won Hee Han2, Gi Hyeon Baek2, Jayoung Park3, James Im3, Chiwoo Kim2 1. APS Research (Korea), 2. APS Inc. (Korea), 3. Columbia University (United States of America) |
| Polygon-based optical system is a crucial component in spot beam annealing, providing precise control over the laser spot position and achieving high linear velocities. Crystallization tests involve power and spot overlap evaluations, AFM measurements, and Raman/SEM analysis to optimize the process parameters and understand the spot-beam annealing mechanism. This paper presents the system configuration and experimental results for spot beam annealing in low-temperature polysilicon ... | |
| FMCp2-7 | Fabrication Process of Metal-Assisted Chemical Etched Curved Mirror Structure for Extracting Surface Plasmon Polariton Mode of Top-Emitting Organic LED *Jun-Young Park1, Jiwon Seok1, Seonghyeon Park1, Seo Hyun Song1, Jong Seong Lee1, Young Wook Park2, Byeong-Kwon Ju1 1. Korea University (Korea), 2. Sun Moon University (Korea) |
| A curved mirror structure for extracting the surface plasmon polariton mode of the top-emitting organic light-emitting diode was successfully fabricated. The metal-assisted chemical etching technique is suggested for a novel and easy fabrication process. Furthermore, an optical simulation was conducted to find the optimized diameter, pitch, and height. | |
| FMCp2-8 | Four Mask Micro-Crystalline Silicon TFT Integrated GOA Circuit on G8.6 Large Size UHD TVs *Fengyun Yang1, An-thung Cho1 1. ChuZhou HKC Optoelectronics Technology Co., Ltd. (China) |
| We fabricated high-stability µc-Si thin films on G8.6 glass substrate and investigated effects of hydrogen/silane gas ratio, power, and pressure in PECVD. Electrical characteristics and crystallinity of BCE TFTs using halftone four-mask photolithography are studied. Key factors affecting the deposition rate for high-mobility TFTs are hydrogen/silane gas ratio and plasma power with a suitable μc-Si thickness. The crystallinity and reliability are better than ... | |
| FMCp2-9 | Novel Coating Material for Anti-Fingerprint Moth-Eye Films *Hiroki Hoshino1, Kentaro Kusama1, Takayuki Arai1 1. LINTEC Corporation (Japan) |
| When touch screens are operated with fingers, there is a problem of fingerprints sticking there. The novel coating material composition we developed showed the effect of absorbing fingerprints over time. By applying this material, it is possible to add anti-fingerprint property to the moth-eye film. | |
| FMCp2-10 | Quantum Dot LED with Improved Charge Balance Using GaZnO Electron Transport Layer *Soryeong Jeong1,2, Hyun Jae Kim1,2, Yoon-Su Kim1, Nara Lee1, Dahye Kim1, Da Hyeon Seol1, Kyoung Won Park1, Chul Jong Han1, Kyu Hyoung Lee2, Kimoon Lee3, Seongil Im2, Min Suk Oh1 1. Korea Electronics Technology Institute (Korea), 2. Yonsei University (Korea), 3. Kunsan National University (Korea) |
| Charge balance is important to achieve enhanced electrical and optical properties of QD-LEDs. To improve charge balance, we introduce a sol-gel processed method via adding gallium (Ga) into the ZnO-based ETL. GaZnO films can control carrier injection and transport, leading to facilitate charge balance. | |
| FMCp2-11 | Non-Volatile Memory Thin-Film Transistors Using Oxide Semiconductor as Both Active and Charge Trapping Layer *Nara Lee1,2, Soryeong Jeong3, Jiwan Kim2, Min Suk Oh1 1. Korea Electronics Technology Institute (KETI) (Korea), 2. Kyonggi University (Korea), 3. Yonsei University (Korea) |
| In this study, a non-volatile memory thin film transistor using oxide semiconductor as a channel and charge trapping layer material was fabricated, and the manufacturing method of the memory thin film transistor according to the deposition conditions of the oxide semiconductor charge trapping layer was optimized. | |
| FMCp2-12 | Ultrathin High-Performance Azo Dye Polarizer with Enhanced Photostability *Man Chun Tseng1, Yi Yang Gao1, Yeuk Lung Ho1, Yue Chu Cheng1, Olena Vashchenko1, Valerii Vashchenko1, Shu Tuen Tang1, Fion Sze Yan Yeung1, Hoi Sing Kwok1 1. The Hong Kong University of Science and Technology (Hong Kong) |
| Ultrathin (<200nm) azo dye polarizing film with high optical performance is developed by photo-alignment methods. The dichroic ratio is as high as over 100, the polarization efficiency is more significant than 99%. The photostability of photoaligned azo dye film must be improved to be stable against polarized and non-polarized illumination. | |
| FMCp2-13L | Physical Properties of Hydrogen-Bonded Liquid Crystal with Fluorinated Benzoic Acids *Rumiko Yamaguchi1, Koki Sawataishi1, Dan Jian1 1. Akita University (Japan) |
| Fluoro-, difluoro- and trifluoro-benzoic acids were added to a hydrogen bonded liquid crystal (HBLC). Dielectric constant, refractive index anisotropy, and elastic constants of K11, K22, and K33 of HBLC mixtures were investigated in the nematic phase at room temperature. | |
| FMCp2-14L | Application and Optimization of White Oil Material in Glass-based Mini-LED Backlight *Chunyu Liu1, Yongchao Zhao1, Jie Chen1, Shixin Zhou1, Ji Li1, Chung-Ching Hsieh1 1. TCL China Star Optoelectronics Technology Co., Ltd. (China) |
| In this study, a new type of white oil material containing specific components was proposed. Through the optimization of process conditions and the theoretical proof by optical simulation, a white oil coating with high reflectivity was obtained, improving the luminance uniformity of mini-LED backlight and thus improving the product performance. | |
| FMCp2-15L | A Hybrid Sheet of High Thermal Dissipation and High EMI Shielding Properties for Foldable Displays *Young-Gyun Kim1, Dong-Hoon Jang1, Tae-Wan Kim1, Young-Do Kim2, Jang-Du Lee2, Kwan-Young Han1 1. Dankook University (Korea), 2. Samsung Display (Korea) |
| Recent developments in foldable displays are causing major problems due to heat and electromagnetic interference generated by various components such as batteries. In this study, a single-layer hybrid sheet with high heat dissipation and high shielding characteristics applicable to foldable displays was developed. | |
| FMCp2-16L | Universal Strategy to Improve the Morphology of the Inkjet Printing Perovskite for Color Conversion Display *Siyang Liu1,2, Guijun Li2,1, Shoucheng Dong1, Bryan Siu Ting Tam Tam1, Fion Sze Yan Yeung1, Mingchao Zhu2, Xi Lan2 1. The Hong Kong University of Science and Technology (Hong Kong), 2. Shenzhen University (China) |
| In this work, we studied the effect of different ratio of the mixed solvents (toluene and dodecane) as well as the number of different printing droplets on the improvement of the color conversion layer morphology, and successfully prepare color conversion layer with uniform thickness and high quality. | |
| FMCp2-17L | Study on a System That Can Measure and Evaluate the Surface Condition of Display Window Substrates *Kwan-Young Han1, Do-Young Jeong1, Young-Gyun Kim1 1. Dankook University (Korea) |
| Recently, inspection of defective AF coatings in displays is a very important technology. In this paper, we have built an automatic system that can detect defects in surface conditions by applying water droplets and imaging them. These results are expected to make a significant contribution to the next-generation display process. |
FMCp3: Display Optics and Measurements
Dec. 8 9:20-10:40 Exhibition Hall B
| FMCp3-1 | Embedding Optical Components in Water to Make Aquatic Image Unaffected by Water Surface Fluctuations *Ryosuke Ichikawa1, Takumi Watanabe1, Shiro Suyama1, Hirotsugu Yamamoto1 1. Utsunomiya University (Japan) |
| We propose aquatic display optics based on aerial imaging by retro-reflection (AIRR) by placing optical components in water to eliminate the disturbance due to water fluctuation. Our optical system kept showing a static image in water even when the water surface was waved. | |
| FMCp3-2 | Patterned Beam Splitter That Shows a Background Image Behind Aerial Image and Makes Light Source Unnoticeable *Takeru Nishiyama1, Mayu Adachi1, Masakazu Sanbe2, Shiro Suyama1, Hirotsugu Yamamoto1 1. Utsunomiya University (Japan), 2. ANOVA Co., Ltd (Japan) |
| Aerial imaging by retro-reflection (AIRR) by use of a patterned beam splitter can show a background image behind the aerial image. This study makes it possible to add a background image to the aerial image without increasing the number of AIRR components, and also make the light source less noticeable. | |
| FMCp3-3 | Scrolling Display That Visually Interpolates Pixel Gaps in Compact Aerial Display by Use of Retro-Reflector Slits *Daichi Tasaki1, Akinori Tsuji2, Toyotaro Tokimoto1,3, Shiro Suyama1, Hirotsugu Yamamoto1 1. Utsunomiya University (Japan), 2. Tokushima University (Japan), 3. XAiX, LLC (Japan) |
| We propose that the scrolling display can visually interpolate the pixel gaps caused by retro-reflector slits mounted in front of a light source in compact aerial display configuration. The perceived quality of the aerial image with pixel gaps can be improved by scrolling display even when pixel gaps are increased. | |
| FMCp3-4 | Aerial Heater Formed by Use of Punching Metal Plate as a Beam Splitter in AIRR Optical System *Sotaro Kaneko1, Shiro Suyama1, Hirotsugu Yamamoto1 1. Utsunomiya University (Japan) |
| This paper shows a novel optical system for an aerial heater. A punching metal plate is used for a beam splitter in aerial imaging by retro-reflection (AIRR) for far infrared radiation. The temperature of the aerial heater can be increased proportionately by increasing hole ratio of punching metal. | |
| FMCp3-5L | Full-color Window Display Using Birefringence Colors by OPP Films Which Enable to Make Images Invisible from Back Side *Kunio Sakamoto1, Towa Maeda1 1. Konan University (Japan) |
| Polarized light on birefringent materials causes interference colors. The authors have researched one-way observable signage which enable to make images invisible from back. We have discovered methods for generating reddish colors by combining transparent films. This has finally allowed us to develop full-color signage. | |
| FMCp3-6L | Thin Diffuser Film That Does Not Require Alignment for Local Dimming Mini-LED Display *Marii Nishikawa1, Yoshihiro Kanai1, Masayuki Sekido1 1. Dai Nippon Printing (Japan) |
| Mini-LED backlight has characteristics of thin module, high brightness, high contrast and low power consumption is expected as next generation display method. DNP diffuser film can be thin and reduce Mura of LED without the need for alignment. | |
| FMCp3-7L | Influence to Underwater Floating Image in Arc 3D Display by Material Difference of Arc 3D Substrates *Kensuke Tamano1, Shiro Suyama1, Hirotsugu Yamamoto1 1. Utsunomiya University (Japan) |
| We clarified that material difference in arc 3D substrates affects the characteristics of underwater floating image in arc 3D display. Polypropylene substrate results in higher luminance and a wider viewing range of arc 3D image. This indicates that polypropylene is more suitable for underwater floating image in arc 3D display. | |
| FMCp3-8L | Illuminating the Ambient Environment: Optical Fiber-Enhanced Tatami as a Display *Fei Gu1, Yuta Sugiura1 1. Keio University (Japan) |
| We propose an approach that merges the traditional concept of tatami with the idea of ambient display, integrating LED strips as input devices. Our system incorporated embedded optical fibers as display components, and corresponding experiments on luminance, transmittance, ambient contrast ratio and viewing angles were conducted for assessments. | |
| FMCp3-9L | Novel Inspection Method to Improve Manufacturing Yield of Micro LED *Yoshiyuki Yokoyama1, Kota Morishima1, Kenichiro Ikemura1, Tomonori Nakamura1, Kazuya Iguchi1 1. Hamamatsu Photonics K.K. (Japan) |
| Novel photoluminescence wavelength measurement method called lambda capture technique was verified by measuring an actual Micro LED sample. By comparison with the conventional electroluminescence technique, we confirmed reliability of the novel measurement technique. By applying this inspection technology to manufacturing industry, manufacturing yield of Micro LED would be greatly improved. | |
| FMCp3-10L | Predicting the Colorimetric Performance of White LEDs Based on Gaussian Spectral Parameters *Zhi-Jia Yang1, Pei-Li Sun1 1. National Taiwan University of Science and Technology (Taiwan) |
| Polynomial regression models are proposed that can accurately predict the variation of colorimetric performance (such as luminous efficacy, CCT, duv, CRI and CFI) of white LEDs as a function of Gaussian spectral parameters. These models are useful for optimizing the white LED spectrum in optical design. |
Workshop on Inorganic Emissive Display and Phosphors
| Dec. 7 | 15:20-16:00 | Room 301 A | PH1 | Phosphors General |
| Dec. 7 | 17:10-18:30 | Room 301 A | PH2 | Phosphors and Devices |
| Dec. 8 | 9:00-10:00 | Room 201 | PH3/OLED5 | QD Materials and Devices |
| Dec. 8 | 10:50-11:50 | Room 201 | OLED6/PH4 | QD Technologies |
| Dec. 7 | 11:10-12:30 | Exhibition Hall B | PHp1 | Phosphors |
PH1: Phosphors General
Dec. 7 15:20-16:00 Room 301 A
Chair: Takashi Kunimoto (Tokushima Bunri Univ.)
Co-Chair: Tsuneo Kusunoki (Oxide)
| PH1-1
15:20 |
Invited Novel Nitride and Oxynitride Phosphors with Complicated Crystal Structure *Takashi Takeda1 1. National Institute for Materials Science (Japan) |
| New nitride and oxynitride phosphors have been required for next generation applications. In the exploration of new phosphors, new phosphors with complicated crystal structure have been discovered. Here, novel nitride and oxynitride phosphors with complicated crystal structure are presented. | |
| PH1-2
15:40 |
Tuning of Chromaticity Coordinates for Ce:YAG Single Crystals by Laser Excitation *Seika Tokumitsu1, Satoshi Makio1, Tsuneo Kusunoki1, Hideo Kawabe1 1. OXIDE Corporation (Japan) |
| Phosphor-converted light sources excited by a blue laser have attracted attention. There are few phosphor variations for such lasers and thus the color temperature variation of white is limited. Here, laser light sources are evaluated under various excitation conditions. It is found that the color temperature can be controlled. |
PH2: Phosphors and Devices
Dec. 7 17:10-18:30 Room 301 A
Chair: Koutoku Ohmi (Tottori Univ.)
Co-Chair: Takashi Kunimoto (Tokushima Bunri Univ.)
| PH2-1
17:10 |
Invited Development of Room Temperature Continuous-Wave Deep Ultraviolet Laser Diodes *Maki Kushimoto1, Ziyi Zhang1,2, Akira Yoshikawa1,2, Koji Aoto1, Yoshio Honda1, Leo J Schowalter1, Chiaki Sasaoka1, Hiroshi Amano1 1. Nagoya University (Japan), 2. Asahi Kasei Corporation (Japan) |
| AlGaN-based UV-C laser diodes (LD) are expected to be applied to various applications as a low-cost, environmentally friendly, and highly efficient laser light source. Our group has realized the world's first room-temperature continuous lasing of deep-UV LDs by optimizing crystal quality and structure, examining conductivity control methods, and suppressing process-induced dislocations. | |
| PH2-2
17:50 |
Invited InGaN LEDs on Tailored Three-Dimensional Structures Toward micro-LED Displays *Yoshinobu Matsuda1, Mitsuru Funato1, Yoichi Kawakami1 1. Kyoto University (Japan) |
| InGaN LEDs can encompass full visible spectral range, and full color LED displays can be fabricated with only this material system. So far, however, discrete monochromatic LEDs on planar structures are used for such an application, resulting in a complex and time-consuming assembly process. To overcome this issue, we have proposed InGaN quantum wells on novel three-dimensional (3D) structures with polychromatic emission properties. In this ... |
PH3/OLED5: QD Materials and Devices
Special Topic of Interest on Quantum Dot Technologies
Dec. 8 9:00-10:00 Room 201
Chair: Kazuhiko Hara (Shizuoka University)
Co-Chair: Takahisa Shimizu (NHK)
| PH3/OLED5-1
9:00 |
Color Converter Based on Giant Shell Quantum Dots and Their Composites *Sören Becker1, Jan Steffen Niehaus1 1. Fraunhofer IAP-CAN (Germany) |
| We present an automated and up-scaled synthesis of giant shell QDs (GSQDs). For color conversion, the ligand shell of these particles will be adjusted. The modified QDs will be incorporated in suitable matrices with high QD content and transferred onto a blue light LED. | |
| PH3/OLED5-2
9:20 |
Accomplishing High Efficiency and High Durability Novel Perovskite Quantum Dots by the Low Carbon Green Technology *Chun Che Lin1, Po-Chun Li1, Ling-Hsuan Chung1, Dong-Lin Cai1, Yi-Wei Hu1, Deng-Kai Chang2, Ching-Tung Wang2, Jung-An Cheng2, Ching Liang Ko2, Kuo Chang Wang2, Ju-Yang Wang2, Tsung-Chien Chang2, Yu-Fu Ko2, Chiang-Hung Tseng2, Chun-Yun Pan2, Chuan-Fa Yeh2, Hsien-Bin Cheng2, Chan-Chih Hsieh2, Chin-Yueh Liao2, Yi-Hung Tsai2 1. National Taipei University of Technology (Taiwan), 2. Foxconn Technology Co., Ltd. (Taiwan) |
| Novel perovskite quantum dots were successfully synthesized by an eco-friendly (non-toxic precursors) and energy-saving (low temperature) process. A display panel was assembled with a blue LED chip, green QDs (530±5 nm, FWHM = 20 nm) and red-emission phosphor, shows almost 120% NTSC. | |
| PH3/OLED5-3
9:40 |
Invited Improvement of Cd-Free Quantum Dot Electroluminescent Characteristics by Inorganic Ion Treatment *Keisuke Kitano1, Seung Hyuk Lee2, Takahiro Doe1, Yasushi Asaoka1, Noboru Iwata1, Makoto Izumi1, Tetsu Tatsuma2, Yasuhiko Arakawa2 1. Sharp Corporation (Japan), 2. The University of Tokyo (Japan) |
| Inorganic ion treatment for Cd-free colloidal quantum dot (QD) layers improved their carrier injection efficiency and electric stability, resulting in improvement of external quantum efficiency (EQE) and electroluminescence (EL) lifetime of the QD-electroluminescent devices (QD-EL). |
OLED6/PH4: QD Technologies
Special Topic of Interest on Quantum Dot Technologies
Dec. 8 10:50-11:50 Room 201
Chair: Toshiaki Ikuta (SK Materials JNC)
Co-Chair: Kazuhiko Hara (Shizuoka University)
| OLED6/PH4-1
10:50 |
Invited Interfacial Engineering Toward Improved Characteristics of Printed Light-Emitting Diodes Based on Green Emissive InP/ZnSe/ZnS Quantum Dots *Hirotake Kajii1, Maowei Huang1, Shinsei Yamada1, Akihito Okamoto1, Yugo Ashida1, Shintaro Toda2, Mizuki Kuniyoshi2, Masahiko Kondow1 1. Osaka University (Japan), 2. ULVAC, Inc. (Japan) |
| A controlled green electroluminescent (EL) spectrum was obtained owing to improved emission recombination into InP/ZnSe/ZnS quantum dot (QD) modified both the ligands and ZnSe intermediate shell. Green emissive InP/ZnSe/ZnS QD light-emitting diode using self-assembly monolayer-treated NiOx hole-injection layer exhibits a narrower EL spectrum and almost the same EL intensity at low current density, compared to yellow-green emissive polymer ... | |
| OLED6/PH4-2
11:10 |
Synthesis of High Efficient InP Based Quantum Dot by Reactivity Control of Zinc Precursors *Yunhee Park1, Jongmoon Shin1, Changmin Lee1 1. DUKSAN Neolux Co,.Ltd. (Korea) |
| The Cd-free quantum dots such as InP have been spotlighted for the high efficiency photo-luminance display. To synthesize high quality optical properties of InP QDs, controlling reactivity of core growth is important factor. This study suggest zinc oxo clusters, which can suppressing the rapid depletion of highly reactive phosphorus source resulting in size-focused of core. The zinc oxo clusters confirmed by MALDI-TOF and showed improved ... | |
| OLED6/PH4-3
11:30 |
Cadmium Free Giant Shell Quantum Dots InP/ZnSe/ZnS QDs with Diameters > 10 nm *Jan Steffen Niehaus1 1. Fraunhofer CAN (Germany) |
| Hereby we present a cadmium-free QD system with high quantum yields, FWHM below 40 nm and high photo stability achieved by a giant shell. These particles can produce a color converter with huge absorption in the blue and emission in green and red. |
PHp1: Phosphors
Dec. 7 11:10-12:30 Exhibition Hall B
| PHp1-1 | Synthesis of Eu Complexes with Dibenzoylmethane and 2,2'-Bipyridyl Ligands and Preparation of Luminescent Thin Films by Wet-process Hideaki Ueda1, Seiya Kanagawa1, Koki Suyama1, *Naoki Ohtani1 1. Doshisha University (Japan) |
| A new europium (Eu) complex was synthesized using dibenzoylmethane and 2,2'-bipyridyl as ligands, i.e. Eu(DBM)3bipy. Water molecules were successfully removed from it, leading to strong red emissions. The new complex is soluble in some organic solvents, suggesting that it is useful for a wet-process. | |
| PHp1-2L | Enhancement of Color Gamut Efficiency in Automotive Backlights through Doped Red Phosphor Materials in Mini-LED *Yun-Zhen Liu1, Pei-Chun Chen1, Yung-Ting Chen1, Hung-Pin Hsu1, Yi-Ping Wang1, Jim Luo2, Kazuto Nishikawa3, Teisou Kan3, Frank Huang4, Tsung-Pei Chiang5 1. Ming Chi University of Technology (Taiwan), 2. Everlight Electronics Corporation Limited (Taiwan), 3. TOPCON Technohouse Corporation (Japan), 4. Taiwan Denkei Solution (Taiwan), 5. Powerview Display Corporation (Taiwan) |
| Doped red phosphor materials in LEDs offer the promising potential to enhance color gamut efficiency and automotive backlight performance. Using a TOPCON spectrophotometer and electroluminescence (EL) technology, we analyze spectral characteristics. Notably, at 300K, there are no thermal effects from the current enhancement, highlighting its efficacy in automotive applications. | |
| PHp1-3L | Fabrication of (Zn,Mg)O Thin Films Dispersed with ZnO Nanocrystals by Mist CVD for Phosphor Applications *Kyosuke Tanaka1, Takeshi Okutsu1, Toshihiro Nara1, Tsukasa Yagasaki1, Tetsuya Kouno1, Hiroko Kominami1, Kazuhiko Hara1 1. Shizuoka University (Japan) |
| (Zn,Mg)O thin films dispersed with ZnO nanocrystals (NCs) were fabricated on a-plane sapphire substrates at 650 °C by a one-step process using mist chemical vapor deposition. The sample exhibited cathodoluminescence originating from ZnO NCs. The post-annealing treatment at 850 °C enhanced the emission from ZnO NCs. |
Workshop on OLED Displays and Related Technologies
| Dec. 7 | 10:50-12:10 | Room 201 | OLED1 | OLED Devices |
| Dec. 7 | 13:30-14:30 | Room 201 | OLED2 | OLED Materials |
| Dec. 7 | 15:20-16:40 | Room 201 | OLED3 | Advanced Technologies |
| Dec. 7 | 17:10-18:30 | Room 201 | OLED4 | Device Physics |
| Dec. 8 | 9:00-10:00 | Room 201 | PH3/OLED5 | QD Materials and Devices |
| Dec. 8 | 10:50-11:50 | Room 201 | OLED6/PH4 | QD Technologies |
| Dec. 8 | 13:30-14:50 | Room 201 | OLED7 | Device Analyses |
| Dec. 6 | 17:00-18:20 | Exhibition Hall B | OLEDp1 | OLED and QD Technologies |
OLED1: OLED Devices
Dec. 7 10:50-12:10 Room 201
Chair: Masaya Adachi (Japan Display)
Co-Chair: Takahiro Komatsu (Canon)
| OLED1-1
10:50 |
Invited Tailored Hosts for Shaping the Emissive Layer of Green Phosphorescent OLEDs *Anna Hayer1, Christian Eickhoff1, Stephanie Ganss1, Falk May1, Martin Kraska1, Jonas Kroeber1, Amir Parham1, Sebastian Stolz1, Elvira Montenegro1 1. Merck Electronics KGaA (Germany) |
| We study the role of green phosphorescent hosts in determining OLED performance. Key aspects are mixture optimization, premixed hosts with high performance stability over the entire crucible filling range, deuteration of different host components, adaptation of hosts to dopants, host impact on optical emitter orientation and tuning the device capacitance. | |
| OLED1-2
11:10 |
Invited Optimizing Plasmonic PHOLEDs for Efficiency, Stability, and Angular Profile *Michael Fusella1, Nicholas J. Thompson1, Renata Saramak1, Haridas Mundoor1, Vinod M. Menon1, Michael S. Weaver1, Julia J. Brown1 1. Universal Display Corporation (United States of America) |
| We demonstrate green, yellow, and red top-emitting phosphorescent organic light emitting devices with Lambertian emission profiles and minimal color shift exceeding 20% external quantum efficiency. This is achieved through intentionally coupling exciton energy to the plasmon mode and then recovering the energy with a nanoparticle-based out-coupling structure. | |
| OLED1-3
11:30 |
Three Trade-Off Models Between Efficiency and Lifetime in Thermally Activated Delayed Fluorescence Based OLEDs *Nobuto Managaki1, Takahiro Ushikubo1, Hayata Aoki1, Masashi Tsubuku1, Hiroyuki Kimura1 1. Japan Display Inc. (Japan) |
| High-performance green hyperfluorescence device features were achieved in commercially available color coordinates, adjusting carrier balances, host films and other layer structures, based on trade-off models between efficiency and lifetime in thermally activated delayed fluorescence. The models containing triplet-triplet annihilation, fast and slow energy transfers, current flows, were discussed. | |
| OLED1-4L
11:50 |
Research on Suppressing the Electrical Crosstalk of Tandem OLED Sub-pixels *Danyang Jiang1, Bo Jiang1, Mengzhen Li1, Jia Liu1, Teng Cui1, Qiang Zhao1, Liwei Ding1, Cuili Gai1 1. Yungu (Gu'an) Technology Co., Ltd. (China) |
| In the tandem OLED, the common layers will transport charge carriers to adjacent sub-pixels both vertically and horizontally, resulting in electrical crosstalk. Moreover, the decrease of tandem OLED current will affect the uniformity under low gray levels. We provide some solutions to supress the electrical crosstalk and optimize display uniformity. |
OLED2: OLED Materials
Dec. 7 13:30-14:30 Room 201
Chair: Yutaka Noguchi (Meiji Univ.)
Co-Chair: Hitoshi Kuma (Idemitsu Kosan)
| OLED2-1
13:30 |
Invited Efficient Intramolecular Triplet-Triplet Annihilation Upconversion of Anthracene Dimers in Organic Light-Emitting Diodes *Kenichi Goushi1, Shoma Sasaki1, Masashi Mamada1, Chihaya Adachi1 1. Kyushu University (Japan) |
| Triplet-triplet annihilation upconversion (TTA-UC) can enhance electroluminescence (EL) efficiency by converting two low-energy triplet excitons into one high-energy singlet exciton. However, conventional (intermolecular) TTA-UC requires high doping concentration, limiting device architectures. Here, we discuss the possibility of the intramolecular TTA-UC, which can be utilized even in dispersed conditions. | |
| OLED2-2
13:50 |
Invited Highly Efficient and Narrowband Emission for BT.2020 *Junji Adachi1, Shuo-Hsien Cheng1, Hayato Kakizoe1, Ayataka Endo1 1. Kyulux Inc. (Japan) |
| Hyperfluorescence (HF) is an emitting mechanism which combines TADF as an assistant dopant and fluorescence as a terminal emitter. RGB HF provided a wide color space which covered 95% of BT.2020 without sacrificing efficiency. This significant result was enabled by ultrahigh color purity by its narrow FWHM, smaller than 20 nm, in all RGB colors. | |
| OLED2-3L
14:10 |
Invited Highly-Efficient Green-Emissive OLEDs Based on Multiple-Resonance Boron-Nitrogen Materials *Xudong CAO1, Xiao LIANG1, Kai XU1, Chong LI1, Zhaochao ZHANG1, Lian DUAN2 1. Jiangsu Sunera Technology Co., Ltd (China), 2. Tsinghua University (China) |
| Green-emission phosphor-sensitized OLEDs were demonstrated to achieve extremely high performance. SY-FGD8-based sensitized top-emission devices achieved efficiency of 232.8cd/A@10mA/cm2, LT95@50mA/cm2,rt of 71hrs and LT80@20mA/cm2,85oC of 187hrs, which are greatly improved by 28%, 29% and 65%, respectively, compared to phosphorescent devices. Notably, SY-FGD8 exhibited excellent compatibility with different host and phosphorescent ... |
OLED3: Advanced Technologies
Dec. 7 15:20-16:40 Room 201
Chair: Yasunori Kijima (Huawei Techs. Japan)
Co-Chair: Ken-ichi Nakayama (Osaka Univ.)
| OLED3-1
15:20 |
Invited Revolutionary New AMOLED Display Bringing Technology Advances *Naoki Shiomi1, Noriyuki Hirata1, Atsushi Takeda1, Hiroyuki Kimura1, Kaichi Fukuda1, Shinichi Kawamura1, Takanobu Yamamoto1, Arichika Ishida1 1. Japan Display Inc. (Japan) |
| eLEAP is an OLED display that uses photolithography in its RGB sub-pixel patterning processes, developed by Japan Display Inc. (JDI). By adopting eLEAP into today's display products, various unparalleled values will be delivered. In this article, we will describe eLEAP's value propositions. | |
| OLED3-2
15:40 |
Invited OLED Display with All Pixels Formed through RGB Side-by-side Patterning by Photolithography *Yasumasa Yamane1, Nozomu Sugisawa1, Daiki Nakamura1, Toshiyuki Isa1, Hitomi Sato1, Daigo Shimada1, Shingo Eguchi1, Toshiki Mizuguchi1, Yuki Tamatsukuri1, Minato Ito1, Kentaro Sugaya1, Takahiro Fujie1, Yuichi Yanagisawa1, Yoshikazu Hiura1, Ryota Hodo1, Shinya Sasagawa1, Hitoshi Kunitake1, Shunpei Yamazaki1 1. Semiconductor Energy Laboratory Co., Ltd. (Japan) |
| We developed a side-by-side photolithographic patterning technology not using a fine metal mask to achieve high resolution for all RGB pixels. This technology will be a general-purpose technology for fabricating OLEDs because of its scalability and wide application to AR/VR microdisplays, small- or medium-sized smartphone displays, and large-sized TVs. | |
| OLED3-3
16:00 |
High Resolution Static Electricity Imaging by Floating Extended-Gate Organic Field-Effect Transistor Array *Yudai Hemmi1, Toshiyuki Sugimoto1, Hiroyuki Matsui1 1. Yamagata University (Japan) |
| Static electricity is known to cause various problems such as breakdown of electronic devices, dust adhesion, fogging in vacuum deposition, and coating defects. Static marks are a complex mixture of positive and negative static electricity and can be produced by electrostatic or corona discharge. Since the net charge is close to zero, such static marks are difficult to detect and remove with conventional equipment. Currently, ... | |
| OLED3-4
16:20 |
Novel Mass Production Process of CNT-VOLET for Realization of Low-Cost and High-Performance OLED *Hiromitsu Katsui1, Xiao Chen2, Svetlana Vasilyeva2, Ryuuzou Oono1, Shao-Ting Huang2, Hiroyuki Yasuda1, Koichi Miyachi1, Andrew Rinzler2,3, Max Lemaitre2, Bo Liu2 1. JSR Corporation (Japan), 2. Mattrix Technologies (United States of America), 3. University of Florida (United States of America) |
| By combining three key components in an AMOLED display pixel: the drive transistor, the storage capacitor, and the OLED stack into a single, gate voltage controlled, light-emitting element, the vertical organic light emitting transistor (VOLET) works together with low-cost, mature TFT technology to enable high performance AMOLED display panels that can be mass produced on fully depreciated LCD lines. And this paper reports the progress ... |
OLED4: Device Physics
Dec. 7 17:10-18:30 Room 201
Chair: Kengo Kishino (Idemitsu Elect. Materials (China))
Co-Chair: Takahiro Komatsu (Canon)
| OLED4-1
17:10 |
Invited Controlling Charge Accumulation Properties at Organic Hetero Interfaces via Spontaneous Orientation Polarization *Yutaka Noguchi1, Mihiro Takeda1, Alexander Hofmann2, Wolfgang Brütting2 1. Meiji University (Japan), 2. University of Augsburg (Germany) |
| Dipolar doping of hole transport layer (HTL) is available for controlling the density and polarity of the accumulated charge at the interfaces of organic light-emitting diodes (OLEDs) via spontaneous orientation polarization. Herein, we demonstrated some examples of dipolar doping HTLs and how they influence on the device performance of OLEDs. | |
| OLED4-2
17:30 |
Invited Engineering Polarization-Induced Efficiency Loss in OLEDs via Processing Conditions and Stack Architecture Siliang He1, Evgeny Pakhomenkno1, *Russell J. Holmes1 1. University of Minnesota (United States of America) |
| Peak OLED efficiency is generally considered in the absence of bimolecular quenching. Recent work has challenged this notion, with observations of exciton-polaron quenching at low-bias caused by spontaneous orientation polarization (SOP). Here, we examine how SOP-induced quenching can be mitigated via judicious choice of film processing conditions and stack architecture. | |
| OLED4-3
17:50 |
Invited Optical Probing of Operation Processes in Light-Emitting Electrochemical Cells *Katsuichi Kanemoto1, Kosuke Yasuji1, Tomo Sakanoue2, Fumihiro Yonekawa2 1. Osaka Metropolitan University (Japan), 2. Nippon Chemical Industrial Co., Ltd. (Japan) |
| The operating process of light-emitting electrochemical cells (LECs) is investigated by operando spectroscopy in the visible and near-infrared regions. We have succeeded in observing the dynamical processes of hole and electron carriers during recombination processes of LECs, by which the operation dynamics of LECs are discussed. | |
| OLED4-4L
18:10 |
Directional and High Color Purity Laser-like Light from Organic Semiconductor Electroluminescent Device *Fatima Bencheikh1, Morgan Auffray1, Abdul Nasir Kuzhiyan Thadathil1, Amir Mikaeili1, Ahmed Mohammed1, Tomoko Fukuta1, Takashi Yoshizumi1, Yoko Fukunaga1 1. KOALA Tech Inc. (Japan) |
| In this work we present an organic semiconductor electroluminescent device that produces light with high directionality (divergence angle of 3°) and high color purity (full width at half-maximum of 2 nm). These features were obtained by designing the electroluminescent device (including a gain emitting layer and distributed feedback resonator) so that the gain is increased by controlling the recombination zone. These are the first results in the ... |
PH3/OLED5: QD Materials and Devices
Special Topic of Interest on Quantum Dot Technologies
Dec. 8 9:00-10:00 Room 201
Chair: Kazuhiko Hara (Shizuoka University)
Co-Chair: Takahisa Shimizu (NHK)
| PH3/OLED5-1
9:00 |
Color Converter Based on Giant Shell Quantum Dots and Their Composites *Sören Becker1, Jan Steffen Niehaus1 1. Fraunhofer IAP-CAN (Germany) |
| We present an automated and up-scaled synthesis of giant shell QDs (GSQDs). For color conversion, the ligand shell of these particles will be adjusted. The modified QDs will be incorporated in suitable matrices with high QD content and transferred onto a blue light LED. | |
| PH3/OLED5-2
9:20 |
Accomplishing High Efficiency and High Durability Novel Perovskite Quantum Dots by the Low Carbon Green Technology *Chun Che Lin1, Po-Chun Li1, Ling-Hsuan Chung1, Dong-Lin Cai1, Yi-Wei Hu1, Deng-Kai Chang2, Ching-Tung Wang2, Jung-An Cheng2, Ching Liang Ko2, Kuo Chang Wang2, Ju-Yang Wang2, Tsung-Chien Chang2, Yu-Fu Ko2, Chiang-Hung Tseng2, Chun-Yun Pan2, Chuan-Fa Yeh2, Hsien-Bin Cheng2, Chan-Chih Hsieh2, Chin-Yueh Liao2, Yi-Hung Tsai2 1. National Taipei University of Technology (Taiwan), 2. Foxconn Technology Co., Ltd. (Taiwan) |
| Novel perovskite quantum dots were successfully synthesized by an eco-friendly (non-toxic precursors) and energy-saving (low temperature) process. A display panel was assembled with a blue LED chip, green QDs (530±5 nm, FWHM = 20 nm) and red-emission phosphor, shows almost 120% NTSC. | |
| PH3/OLED5-3
9:40 |
Invited Improvement of Cd-Free Quantum Dot Electroluminescent Characteristics by Inorganic Ion Treatment *Keisuke Kitano1, Seung Hyuk Lee2, Takahiro Doe1, Yasushi Asaoka1, Noboru Iwata1, Makoto Izumi1, Tetsu Tatsuma2, Yasuhiko Arakawa2 1. Sharp Corporation (Japan), 2. The University of Tokyo (Japan) |
| Inorganic ion treatment for Cd-free colloidal quantum dot (QD) layers improved their carrier injection efficiency and electric stability, resulting in improvement of external quantum efficiency (EQE) and electroluminescence (EL) lifetime of the QD-electroluminescent devices (QD-EL). |
OLED6/PH4: QD Technologies
Special Topic of Interest on Quantum Dot Technologies
Dec. 8 10:50-11:50 Room 201
Chair: Toshiaki Ikuta (SK Materials JNC)
Co-Chair: Kazuhiko Hara (Shizuoka University)
| OLED6/PH4-1
10:50 |
Invited Interfacial Engineering Toward Improved Characteristics of Printed Light-Emitting Diodes Based on Green Emissive InP/ZnSe/ZnS Quantum Dots *Hirotake Kajii1, Maowei Huang1, Shinsei Yamada1, Akihito Okamoto1, Yugo Ashida1, Shintaro Toda2, Mizuki Kuniyoshi2, Masahiko Kondow1 1. Osaka University (Japan), 2. ULVAC, Inc. (Japan) |
| A controlled green electroluminescent (EL) spectrum was obtained owing to improved emission recombination into InP/ZnSe/ZnS quantum dot (QD) modified both the ligands and ZnSe intermediate shell. Green emissive InP/ZnSe/ZnS QD light-emitting diode using self-assembly monolayer-treated NiOx hole-injection layer exhibits a narrower EL spectrum and almost the same EL intensity at low current density, compared to yellow-green emissive polymer ... | |
| OLED6/PH4-2
11:10 |
Synthesis of High Efficient InP Based Quantum Dot by Reactivity Control of Zinc Precursors *Yunhee Park1, Jongmoon Shin1, Changmin Lee1 1. DUKSAN Neolux Co,.Ltd. (Korea) |
| The Cd-free quantum dots such as InP have been spotlighted for the high efficiency photo-luminance display. To synthesize high quality optical properties of InP QDs, controlling reactivity of core growth is important factor. This study suggest zinc oxo clusters, which can suppressing the rapid depletion of highly reactive phosphorus source resulting in size-focused of core. The zinc oxo clusters confirmed by MALDI-TOF and showed improved ... | |
| OLED6/PH4-3
11:30 |
Cadmium Free Giant Shell Quantum Dots InP/ZnSe/ZnS QDs with Diameters > 10 nm *Jan Steffen Niehaus1 1. Fraunhofer CAN (Germany) |
| Hereby we present a cadmium-free QD system with high quantum yields, FWHM below 40 nm and high photo stability achieved by a giant shell. These particles can produce a color converter with huge absorption in the blue and emission in green and red. |
OLED7: Device Analyses
Dec. 8 13:30-14:50 Room 201
Chair: Yoshinori Fukuda (Futaba)
Co-Chair: Yutaka Noguchi (Meiji Univ.)
| OLED7-1
13:30 |
Invited Blue Organic Light-Emitting Diode with Extremely Low Driving Voltage *Seiichiro Izawa1 1. Tokyo Institute of Technology (Japan) |
| Blue organic light-emitting diode (OLED) with extremely low driving voltage is demonstrated. This OLED reaches 100 cd/m2, which is equivalent to the luminance of a typical commercial display, at 1.97 V. | |
| OLED7-2
13:50 |
Invited Device Physics and Degradation of OLEDs Investigated by Advanced Characterization Stefano Sem1, Sandra Jenatsch1, *Simon Züfle1, Arno Gadola1, Daniel Hudson2, Balthasar Blülle1, Christof Pflumm2, Beat Ruhstaller1,3 1. Fluxim AG (Switzerland), 2. Merck KGaA (Germany), 3. Zurich University of Applied Sciences (Switzerland) |
| The operational stability is a key factor in the improvement of OLEDs. Here we present accelerated lifetime studies (ALT) for a blue TADF OLED and demonstrate the successful determination of the scaling parameters. Moreover, we study the microscopic degradation mechanisms using advanced in-situ electrical characterization methods. | |
| OLED7-3
14:10 |
Withdrawn |
| OLED7-4L
14:30 |
Blackness Optimization for Seamless Design of Vehicle Displays *Young-Tae Kim1, Woong-Jin Seo1, Sang-Won Seo1, Min-Koo Kim1 1. LG Display (Korea) |
| There are three types of vehicle displays for driver and co-driver such as Cluster, Center Information Display (CID) and Co-Driver Display (CDD). Vehicle display should be equipped with viewing angle light control functionality for driver's safety. And, since they are produced as 1-cover glass multi displays (1CG-MD), seamless design with no perception of the boundary between display and cover glass is important for sense ... |
OLEDp1: OLED and QD Technologies
Special Topic of Interest on Quantum Dot Technologies
Dec. 6 17:00-18:20 Exhibition Hall B
| OLEDp1-1 | A Sub-Pixel Dark Spot Detection Scheme of Micro OLED with CRA *Chao Pu1, Qingshan Shan1, Xiaochuan Chen1, Yinhu Huang1, Shengji Yang1, Pengcheng Lu1, Zhao Ma1, Yingbing Zhang1, Liuzeming Qu1, Qi Su1, Zhuoyang Xie1 1. Yunnan Invensight Optoelectronics Technology Co., LTD. (China) |
| A sub-pixel dark spot detection scheme of Micro OLED with CRA is proposed. The scheme not only considers the influence of CRA on the detection, but also combines the sensitivity of human eye to sub-pixel dark spot detection. Sub-pixel dark spots can be accurately detected by using this scheme. | |
| OLEDp1-2 | High Light Extraction Technology for Flexible Top Emission OLED Applications *Jun Hyeog Oh1, Hye In Yang1, Jang Hyuk Kwon1 1. Kyung Hee University (Korea) |
| In this paper, we report high light extraction from the top emission OLED(TEOLED) device structure by inserting a low refractive index (RI) layer at the interface between the capping layer and thin film encapsulation layer. The current efficiency of fabricated blue TEOLED device using this low RI layer is improved by about 23% and the blue index value is enhanced by about 26%. | |
| OLEDp1-3 | Design and Characterization of Platinum Phosphorescent Dopant *Hye Rin Kim1, Young Hun Jung1, Subramanian Muruganantham1, Jang Hyuk Kwon1 1. Kyung Hee University (Korea) |
| Pt complex phosphorescent dopant with suppressed MMLCT properties was developed. Our Pt dopants demonstrates an EQE of 23.1%, a long lifetime of 132 hours (LT90 at 1000 nit). The energy difference between MLCT and metal centered triplet states seems to play an important role in the device lifetime improvement. | |
| OLEDp1-4 | Aging and Recovery Effects of Quantum-Dot Light-Emitting Diode Characteristics *Da Yeon Hyeong1, Ho Nyeon Lee1 1. Soonchunhyang University (Korea) |
| This paper aims to explore the aging and recovery mechanisms of quantum dot light emitting diode (QLED) properties. We investigated the effects of reverse bias on charge trapping and accumulation mitigation of QLEDs, the effects of N2 environmental storage, and annealing in the ZnO nanoparticle (NP) electron transport layer (ETL). | |
| OLEDp1-5 | Effect of Thermal History During Device Fabrication on Quantum-Dot Light-Emitting Diode Characteristics *Jimin Lee1, Honyeon Lee1 1. Soonchunhyang University (Korea) |
| This study investigates the impact of thermal history on the characteristics and reliability of quantum-dot light-emitting diodes (QLEDs). We examine how the thermal conditions during device fabrication processes affect the device properties. Experimental measurements and analyses are conducted to assess the influence of thermal conditions on device reliability and optoelectrical characteristics. The findings contribute to optimizing the manufacturing process and to get the dependable high-performance ... | |
| OLEDp1-6L | The Influence Factors of Charge Generation Layer to Voltage Shift in Tandem OLEDs *Zhimin Yan1,2,3, Junwei Liu2, Fuxing Jiao3, Xiang Liu2, Rubo Xing1,3, Junfeng Li1,3 1. Visionox Technology Incoporation (China), 2. Yungu (gu'an) Technology Co. (China), 3. Kunshan Govisionox Optoelectronics Co. (China) |
| To investigate the voltage-shift in tandem organic light emitting device, several factors in charge generation layer have been studied, including, the concentration of p/n charge generation, the materials of n charge generation layer and various isolating layers between p/n charge generation layers. The results identified all the factors have impact on voltage shift. | |
| OLEDp1-7L | Research on Improving the Performance of Flexible Transparent AMOLED *Jingjing Li1, Jia Liu1, Bo Jiang1, Xinye Pan1, Qiang Liu1, Xuejie Ma1, Rong Zhang1, Wenfeng Song1 1. Yungu (Gu'an) Technology Co., Ltd. (China) |
| The see-through capability, which is closely related to transmittance, reflectivity, haze and yellowness index, is a key indicator to measure the performance of transparent display. In this paper, we analyzed a series of factors and tried many methods to further improve the quality of flexible transparent AMOLED significantly. | |
| OLEDp1-8L | Two-Substrates OLEDs Using an Interfacial Adhesive Layer *DongHeon Yoo1, CheolHee Moon1 1. Hoseo University (Korea) |
| PEG (polyethylene glycol) was added into PEI, the functional layer of the OLED, to improve the adhesion strength and electrical conductivity. The adhesive OLED with a two-substrate structure was successfully completed using the interfacial layer as an adhesive. | |
| OLEDp1-9L | Optimization of Bank Components to Improve Color Uniformity of OLED Displays *Ji-Hoon Park1, Shin-Wook Kang1, Kensuke Mohara3, Mitsuhiro Usugaya2, Kwan-Young Han1 1. University of Dankook (Korea), 2. Daikin industry (Japan), 3. Daikin korea (Korea) |
| In this study, the effect of changes in the concentration of fluorine compounds contained in OLED banks on the uniformity of light-emitting layers and device performance was observed. It was found that the performance of the OLED device was improved by the optimized concentration of fluorine. |
Workshop on 3D/Hyper-Realistic Displays and Systems
| Dec. 6 | 13:00-14:20 | Room 301 A | 3DSA1/3D1 | Holography (1) |
| Dec. 6 | 14:50-16:10 | Room 301 A | 3D2/3DSA2 | Human Factor on Realistic Display |
| Dec. 6 | 16:40-17:40 | Room 301 A | 3DSA3/3D3 | Light Field/Multiview/Stereo/Aerial (1) |
| Dec. 7 | 9:00-10:20 | Room 301 A | 3D4/3DSA4 | Light Field/Multiview/Stereo/Aerial (2) |
| Dec. 7 | 10:50-12:10 | Room 301 A | 3DSA5/3D5 | Light Field/Multiview/Stereo/Aerial (3) |
| Dec. 7 | 13:30-14:50 | Room 301 A | 3D6/3DSA6 | Holography (2) |
| Dec. 8 | 9:00-10:20 | Room 301 A | 3DSA7/3D7 | Emerging Technologies for 3D/Hyper-realistic Display |
| Dec. 8 | 10:50-12:10 | Room 301 A | 3D8/3DSA8 | Holography (3) |
| Dec. 8 | 13:30-14:50 | Room 301 A | MVS4/3DSA9/3D9 | 3D Technologies for Metaverse Systems |
| Dec. 7 | 15:40-17:00 | Exhibition Hall B | 3Dp1 | Emerging Technologies for 3D/Hyper-Realistic Display |
3DSA1/3D1: Holography (1)
Dec. 6 13:00-14:20 Room 301 A
Chair: Kyoji Matsushima (Kansai University)
Co-Chair: Tomohiro Yendo (Nagaoka Univ. of Tech.)
| 3DSA1/3D1-1
13:00 |
Invited A Novel Transparent 3D Display Based on Integration of Passive and Active Optical Elements *Hoang Yan Lin Lin1, Chia-Yuan Chang1 1. National Taiwan University (Taiwan) |
| We want to create a floating 3D image with integral imaging based 3D light field display and with an optical transparent display. We develop the Computer Generated Elemental Image (CGEI) method to create an image with a different depths from a two-dimensional image and a depth map. We create a new weight function to increase the image qualities. Also, creating an optical transparent light-field display ... | |
| 3DSA1/3D1-2
13:20 |
Invited Holographic Image Reconstruction Using a Magneto-Optical Spatial Light Modulator with Its Pixel Pitch of 1 μm and its Layout of 10k × 5k *Ken-ichi Aoshima1, Nobuhiko Funabashi1, Ryo Higashida1, Mayumi Kawana1, Yuta Yamaguchi1, Kenji Machida1 1. Japan Broadcasting Corporation (Japan) |
| We have demonstrated successful holographic images reconstruction using a magneto-optical spatial light modulator (MO-SLM) which magnetization is controlled by current induced domain wall motion. The MO-SLM has the pixel pitch of one micron for horizontal direction showing large viewing zone angle of 30 degrees. | |
| 3DSA1/3D1-3
13:40 |
Invited Digitally Printed Holograms for Efficient Generation of Structured Light *Jackin Boaz Jessie1, Kenji Kinashi1, Naoto Tsutsumi1, Wataru Sakai1 1. Kyoto Institute of Technology (Japan) |
| Here we combine analog hologram recording material and digital hologram printing technique, for efficient generation of structured light beams. A set of 100 vortex beams were generated from a hologram of size 1mm x 1mm with high diffraction efficiency. This method can aid future optical communication and information processing applications. | |
| 3DSA1/3D1-4
14:00 |
Using Time Multiplexing with Spatial Multiplexing to Reduce Speckle for AR-HUD *Hung-I Chang1, Hoang-Yan Lin1, Yen-Jung Chen1 1. National Taiwan University (Taiwan) |
| The AR-HUD system based on LCoS and using laser as a light source has a speckle issue severely affects the image quality.This paper proposes using time and spatial multiplexing, a configuration effective method to reduce the speckle problem in the experiment. |
3D2/3DSA2: Human Factor on Realistic Display
Dec. 6 14:50-16:10 Room 301 A
Chair: Chien-Yu Chen (National Taiwan University of Science and Technology)
Co-Chair: Takashi Yamazoe (Seikei University)
| 3D2/3DSA2-1
14:50 |
Relationship between Field of View Size and Head Motion in Eyepiece Displays *Sumio YANO1,2, Shuichi Ojima3 1. Shimane University (Japan), 2. RITECS Inc. (Japan), 3. Sojo University (Japan) |
| We examined the relationship between the field of view and head motion on an eyepiece display and found that head motion is narrower in a wide field of view than in a narrow field of view, while velocity depends on the frequency component of the image. | |
| 3D2/3DSA2-2
15:10 |
HEVC Subjective and Objective Image Quality Assessment Considering Cross Reality Based on 360 Degrees Camera *Norifumi Kawabata1 1. Kanazawa Gakuin University (Japan) |
| In this paper, we generated 360 degrees camera images by using RICOH THETA Z1. Next, we processed of H.265/HEVC for generated images, and estimated fundamentally how the coded image quality is controlled by changing of image region or coding parameter, finally, we considered application for eXtended reality using Xperia View. | |
| 3D2/3DSA2-3
15:30 |
Effects of Motion Parallax Smoothness and Head Moving Range on Reduction of The Cardboard Effect *Kosuke Takahashi1, Haruki Mizushina1, Shiro Suyama2, Kenji Yamamoto1 1. Tokushima University (Japan), 2. Utsunomiya University (Japan) |
| Smoother motion parallax and wider head movements contribute to reduce the cardboard effect in binocular stereoscopic display. The cardboard effect, a perceptual distortion in stereoscopic displays that makes objects appear flat, can be reduced by adding motion parallax. | |
| 3D2/3DSA2-4
15:50 |
Multi-view DFD (Depth-Fused 3D) Rendering with Linear Blending *Yuto Morishita1, Munekazu Date2, Haruki Mizushina1, Shiro Suyama1, Kenji Yamamoto1 1. Tokushima University (Japan), 2. Tokushima Bunri University (Japan) |
| The usefulness of Multi-view DFD rendering with linear blending is demonstrated. A combination of Multi-view DFD rendering and linear blending was considered to reduce the number of cameras in stacked multi-view display. The depth of 3D images was evaluated at several camera-to-camera distance. |
3DSA3/3D3: Light Field/Multiview/Stereo/Aerial (1)
Special Topic of Interest on AR/VR and Hyper Reality
Dec. 6 16:40-17:40 Room 301 A
Chair: Hoang Yan Lin (National Taiwan University)
Co-Chair: Masaru Tsuchida (NTT)
| 3DSA3/3D3-1
16:40 |
Integral Imaging Using a Lens Array Composed of Fine Interleaved Fresnel Lenses *Hiroto Omori1, Hideki Kakeya1 1. University of Tsukuba (Japan) |
| This paper proposes integral imaging comprising fine interleaved elemental lenses, which consist of elemental prisms whose slope angle corresponds to two adjacent convex lenses. By using fine elemental lenses, parallax between adjacent elemental images becomes small and continuity of image increases even when the depth of image is large. | |
| 3DSA3/3D3-2
17:00 |
Improved Eye-Tracking Function by Combining Inertial Sensor Information for Integral 3D Display *Hisayuki Sasaki1, Masanori Kano1, Naoto Okaichi1, Hayato Watanabe1, Tomoyuki Mishina1 1. NHK (Japan) |
| When eye-tracking is compromised in integral 3D display owing to the deterioration of the lighting conditions of the observer's face, motion blur, or movement of the face outside the camera view, a discontinuous viewing zone is formed. Combining face image detection with inertial sensor information can lead to a robust eye-tracking function. | |
| 3DSA3/3D3-3
17:20 |
Depth Enhancement of Time Multiplexed Light Field Display by Multilayering Display Surface Using Two Lens Arrays *Tatsuya Shiratori1, Kengo Fujii1, Tomohiro Yendo1 1. Nagaoka University of Technology (Japan) |
| One of the problems with light field displays is that the resolution of the displayed object decreases with distance from the display surface. To solve this problem, we propose a multilayer display using two lens arrays and a high-speed projector. The resolution improvement is confirmed by simulation. |
3D4/3DSA4: Light Field/Multiview/Stereo/Aerial (2)
Special Topic of Interest on AR/VR and Hyper Reality
Dec. 7 9:00-10:20 Room 301 A
Chair: Toshiaki Fujii (Nagoya Univ.)
Co-Chair: Yongjun Lim (ETRI)
| 3D4/3DSA4-1
9:00 |
Invited VR Noh “GHOST IN THE SHELL” ~Immersive Style Stage Direction without HMD ! *Shutaro Oku1 1. The University of Tokyo (Japan) |
| Immersive style stage direction without HMD for VR Noh “GHOST IN THE SHELL” will be achieved by applying a holographic screen on the stage and implementing multi-layer projection, low-resolution effects and gaze guidance. This foundational technology will open up the next stage as a new metaverse interface. | |
| 3D4/3DSA4-2
9:20 |
Development of 3D Glasses Using Aspherical Phase Plates for Endoscopic Surgery *Kotomi Takatsu1, Yasushi Miyajima2, Kazutoshi Kato2, Yuki Kondo3, Hiroharu Kobayashi3, Yasuhiro Takaki1 1. Tokyo University of Agriculture and Technology (Japan), 2. Itoh Optical Industrial Co., Ltd. (Japan), 3. Seirei Hamamatsu General Hospital (Japan) |
| Three-dimensional (3D) glasses were developed for the 3D endoscopic surgeries using third-order aspherical phase plates to reduce visual fatigue. To assess their effectiveness, a subjective evaluation was conducted using a simulator sickness questionnaire in the hospital. The results of the evaluation conducted over four months are reported. | |
| 3D4/3DSA4-3
9:40 |
Pixel-Density Enhanced Integral Three-Dimensional Display by Time-Division Multiplexing of Two-Dimensional Image *Hayato Watanabe1, Naoto Okaichi1, Masanori Kano1, Hisayuki Sasaki1, Jun Arai1 1. NHK (Japan) |
| We propose a method for displaying three-dimensional (3D) images with high maximum pixel density by synthesizing a two-dimensional image with an integral 3D image using time-division multiplexing. We developed a prototype display system and verified its display performance through display experiments. | |
| 3D4/3DSA4-4
10:00 |
Development of Vertical Diffusive Reflection Screen with Background Transparency for AR 3D Display *Sei Sato1, Kengo Fujii1, Tomohiro Yendo1 1. Nagaoka University of Technology (Japan) |
| We propose an AR 3D display with multiple horizontal viewpoints. The background-transmitting part and the diffuse-reflecting part are alternately arranged on a screen to realize this display. The screen was engraved lines on a transparent board. The screen characteristics were also compared by changing the engraved line conditions. |
3DSA5/3D5: Light Field/Multiview/Stereo/Aerial (3)
Special Topic of Interest on AR/VR and Hyper Reality
Dec. 7 10:50-12:10 Room 301 A
Chair: Sumio Yano (Shimane Univ.)
Co-Chair: Keita Takahashi (Nagoya University)
| 3DSA5/3D5-1
10:50 |
Embossing Volume 3D Effect by Using DCRA Plate *Shi-Hwa Huang1, Chih-Hao Chuang2, Chien-Yu Chen1 1. National Taiwan University of Science and Technology, Taipei, Taiwan (Taiwan), 2. Feng Chia University (Taiwan) |
| Our research involves utilizing the DCRA to slice objects into multiple images, enabling us to display their volume. By leveraging the persistence of the visual effect in the human eye, we aim to achieve an embossed volumetric display. | |
| 3DSA5/3D5-2
11:10 |
Point Light Source Array Based Integral 3D Display Using Eye-Tracking and Time-Division Technologies *Naoto Okaichi1, Hayato Watanabe1, Masanori Kano1, Hisayuki Sasaki1, Jun Arai1 1. NHK (Japan) |
| This article proposes an integral three-dimensional (3D) display system based on a point light source array using eye-tracking and time-division technologies. The prototype system has wide viewing angles of 100.2° horizontally and 68.6° vertically with eye tracking and a time-division display that doubles the 3D resolution both horizontally and vertically. | |
| 3DSA5/3D5-3
11:30 |
Distortion Reduction of Transparent Display Perceived Beyond the Surface of the Display Using Small Mirror Array Screen *Ryosuke Kida1, Kengo Fujii1, Tomohiro Yendo1 1. Nagaoka University of Technology (Japan) |
| We propose an AR display oriented to applications such as store windows. We reduced the image distortion caused by moving the viewpoint, which was a problem with the method of projecting images onto a half-mirror array. | |
| 3DSA5/3D5-4
11:50 |
Reduction of Image Distortion for Vertically Shifted Viewpoints on Superimposed 3D Display Viewable from 360 Degrees *Yuto Inaba1, Kengo Fujii1, Tomohiro Yendo1 1. Nagaoka University of Technology (Japan) |
| In the previous superimposed 3D display viewable from 360 degrees, it has a problem that stereoscopic images are distorted by viewpoint shifts. In this paper, we propose a method to improve the distortion of stereoscopic images caused by vertical viewpoint shift by changing the mirror tilt of the previous system. |
3D6/3DSA6: Holography (2)
Dec. 7 13:30-14:50 Room 301 A
Chair: Boas Jessie Jackin (Kyoto Institute of Technologies)
Co-Chair: Ken-ichi Aoshima (NHK)
| 3D6/3DSA6-1
13:30 |
Invited Wavefront Aberration Introduced by DMDs *Jung-Young Son2, Tetiana Venkel3, Jung Kim2, Hyoung Lee1, Beom-Ryeol Lee1 1. ETRI (Korea), 2. Konyang University (Korea), 3. Chernivtsi University (Ukraine) |
| Wavefront aberrations introduced by DMDs of different pixel structures to the reconstructed images of holograms displayed on the DMDs are investigated with a Shack-Hartmann wavefront sensor. The aberration increases as the pixel size increases, and introduces distortions and blurring to the reconstructed image. This aberration can also result the reconstructed image of a point to be bigger for the DMD with larger pixel size than ... | |
| 3D6/3DSA6-2
13:50 |
Invited Depth-Varying AR HUD Display Method *Chien-Yu Chen1, Tzu-An Chou1, Chih-Hao Chuang2 1. National Taiwan University of Science and Technology (Taiwan), 2. Feng Chia University (Taiwan) |
| The utilization of CGH display technology in multi-depth head-up display (multi-depth HUD) for augmented reality (AR) is currently a prominent area of research. However, existing implementations often involve the use of multiple projection devices or spatial light modulators with complex optical mechanisms, such as Freeform Mirror, to achieve multi-depth projection in automotive HUDs. These approaches pose challenges in terms of system size and cost. Therefore, ... | |
| 3D6/3DSA6-3
14:10 |
Improvement of Image Quality of Wide-Angle Holographic Display Using a Non-Periodic Photon Sieve *Shunki Sasaki1, Yasuhiro Takaki1 1. Tokyo University of Agriculture and Technology (Japan) |
| This study improves the image quality of the reconstructed images generated through holographic techniques using a non-periodic photon sieve, which provides a wide viewing zone angle. We developed the optimization technique based on the Gerchberg-Saxton algorithm to calculate the phase distribution displayed on the phase-only spatial light modulator. | |
| 3D6/3DSA6-4
14:30 |
HOE Screen Generating Multiple Viewpoints for Transparent 3D Display *Nobuyuki Murakoshi1, Kengo Fujii1, Tomohiro Yendo1 1. Nagaoka University of Technology (Japan) |
| We propose a transparent 3D display with a wide field of view using fewer projectors by combining a unique HOE screen that focuses the projector image in multiple directions with face tracking. In this paper, we built a hologram printer to confirm the optical function of the proposed HOE screen. |
3DSA7/3D7: Emerging Technologies for 3D/Hyper-realistic Display
Dec. 8 9:00-10:20 Room 301 A
Chair: Hyoung Lee (ETRI)
Co-Chair: Takafumi Koike (Hosei Univ.)
| 3DSA7/3D7-1
9:00 |
Simulation and Verification of 1×13 Wavelength Selective Switch Using LCoS for 2D Light Splitting *You-Si Lin1, Yu-Chia Cheng1, Hoang-Yan Lin1 1. National Taiwan University (Taiwan) |
| We designed a 1×12 wavelength selective switch with a 2D fiber array, used Zemax simulation to optimize the optical element parameters, and used the iterative Fourier transform algorithm to design the optimal phase modulated LCoS-SLM. Finally, experiment is designed to verify the efficiency and crosstalk of the system. | |
| 3DSA7/3D7-2
9:20 |
Light Field Acquisition Using Shack-Hartmann Wavefront Sensor and Its Application to Holographic Stereogram *Koki Matsuoka1, Chihiro Tsutake1, Keita Takahashi1, Toshiaki Fujii1 1. Nagoya University (Japan) |
| We propose to use a Shack-Hartmann wavefront (SHW) sensor for acquiring a light field (LF) with high angular resolution, which is suitable for holographic stereogram. We present an end-to-end pipeline from LF capture to holographic display on real hardware. | |
| 3DSA7/3D7-3
9:40 |
Interactive Relit Realistic Paintings on a Digital Frame *Ying-Hsuan Lee1, Chih Yang1, Tzung-Han Lin1 1. National Taiwan University of Science and Technology (Taiwan) |
| An innovative 3D interactive digital framework was proposed. We rendered oil-paintings with PBR textures on anti-reflective screens to reproduce realistic lighting effects. After detecting the viewer's position, the content and re-rendered dynamically to fit the scenario which emphasizes texture details, brushstrokes and colors of artworks due to lighting directions. | |
| 3DSA7/3D7-4
10:00 |
Encoding of Stereo Images Using Bilateral Filters and Different Compression Ratio for Limited Communication Bandwidth *Naoto Nakayama1, Haruki Mizushina1, Kenji Yamamoto1 1. Tokushima University (Japan) |
| Stereo images should be highly compressed for limited communication bandwidth. In this experiment, we evaluated stereo images with different compression ratios on the left and right sides using a bilateral filter, and stereo images with the same compression ratio on the left and right sides. |
3D8/3DSA8: Holography (3)
Dec. 8 10:50-12:10 Room 301 A
Chair: Yasuhiro Takaki (Tokyo University of Agriculture and Technology)
Co-Chair: Hisayuki Sasaki (NHK)
| 3D8/3DSA8-1
10:50 |
Invited Expanding Space Bandwidth Product in Quantitative Phase Imaging by Comparing Transport of Intensity Equation with Fourier Ptychographic Microscopy *Yongjun Lim1, Kwan-Jung Oh1 1. Electronics and Telecommunications Research Institute (Korea) |
| Phase information given by transport of intensity equation and Fourier ptychographic microscopy are compared with each other adopting incoherent light sources, and the expansion of space bandwidth product in quantitative phase imaging based on the spectral domain analysis is to be provided. | |
| 3D8/3DSA8-2
11:10 |
Aperture Control for Increasing Hologram Signal Amplitude in Incoherent Digital Holography *Tetsuhiko Muroi1, Teruyoshi Nobukawa1, Yutaro Katano1, Kei Hagiwara1 1. NHK (Japan) |
| In incoherent digital holography (IDH), the hologram signal amplitude decreases as the object size relative to the image size increases. To address this issue, we implemented aperture control within the IDH optical configuration. This allowed us to increase the hologram signal amplitude and reduce random noise in the reconstructed image. | |
| 3D8/3DSA8-3
11:30 |
Holographic Phase Retrieval Based on PhaseMax *Tatsuki Wada1, Chihiro Tsutake1, Keita Takahashi1, Toshiaki Fujii1 1. Nagoya University (Japan) |
| We propose a method for generating phase-only holograms. Our method is inspired by an optimization-based phase retrieval method, referred to as PhaseMax. In contrast to conventional methods, our method always produces globally optimal phase-only holograms. We demonstrate through our optical experiments that visually-plausible images can be produced from our hologram. | |
| 3D8/3DSA8-4
11:50 |
Invited Calculation of Computer-Generated Hologram Over 100K Resolution Range for Realistic 3D Meta-Space Reproduction *Masahiro Yamaguchi1 1. Tokyo Institute of Technology (Japan) |
| This paper demonstrates the calculation of a computer-generated hologram that can reproduce deep and realistic 3D scenes in space, which is still or animated. The method, based on ray-wavefront conversion, enables hologram computation from the data rendered by a computer graphics technique or captured by a real camera. |
MVS4/3DSA9/3D9: 3D Technologies for Metaverse Systems
Special Topic of Interest on AR/VR and Hyper Reality
Dec. 8 13:30-14:50 Room 301 A
Chair: Yuzo Hisatake (Shizuoka University)
Co-Chair: Taesoo Kwon (Hanyang Univ.)
| MVS4/3DSA9/3D9-1
13:30 |
Invited Control of a Single-Rigid-Body Character in Various Environments *Taesoo Kwon1, Yoonsang Lee1 1. Hanyang University (Korea) |
| Expressing the full-body character as a single rigid body, we can obtain a control policy that can adapt to various unobserved environmental changes and controller transitions. We demonstrate the ability of the policy with environments such as running on uneven terrain or pushing a box, and transitions between learned policies. | |
| MVS4/3DSA9/3D9-2
13:50 |
Real-time MIV Player for Metaverse Service *Hong-Chang Shin1, Gwangsoon Lee1, Won-Sik Cheong1, Hyun-gon Choo1 1. Electronics and Telecommunications Research Institute (Korea) |
| The MPEG-I Visual group is currently working on standardization efforts related to 3DoF+ video generation technology with the aim of providing immersive video services under the name MPEG Immersive Video (MIV). Immersive video technology, which combines multiple camera footage to synthesize scenes in virtual space and reproduce lifelike videos, is closely related to reality-based metaverse services. In this paper, we introduce the core technology of ... | |
| MVS4/3DSA9/3D9-3
14:10 |
Head Motion-Based Accident Detection Model in Construction Site Using Simulation *Kisub Lee1, Minsu Kyeon1, Gaeun Noh1, Jong-Il Park1 1. Hanyang University (Korea) |
| This study presents an accident detection model using a head-mounted display (HMD) device to prevent casualties caused by falls and material collisions at construction sites. The model utilizes simulations to generate data on head movements during accident scenarios. By comparing this data with animation data that represents normal conditions, the model performs binary classification to identify whether a situation is hazardous or safe. This study ... | |
| MVS4/3DSA9/3D9-4
14:30 |
Ultra-Wide Field-of-View Display by Use of Aerial Stereoscopic Images Reconstructed Just Behind the Eyes *Hiroki Takatuska1, Munekazu Date2, Masaki Yasugi1,3, Shiro Suyama1, Hirotsugu Yamamoto1 1. Utsunomiya University (Japan), 2. Tokushima Bunri University (Japan), 3. Fukui Prefectural University (Japan) |
| When an observer's eye is placed before the aerial image, an ultra-wide field-of-view is realized because the image is reconstructed just behind the eye. However, negative binocular disparity is reproduced. We use stereoscopic display technique to reproduce positive binocular disparity on the aerial images that are reconstructed behind the observer. |
3Dp1: Emerging Technologies for 3D/Hyper-Realistic Display
Special Topic of Interest on AR/VR and Hyper Reality
Dec. 7 15:40-17:00 Exhibition Hall B
| 3Dp1-1 | Comparison Between Various Homography Methods for Phase Profile Optimization of Holographic Display Using Lens Array *Minseok Chae1, Chun Chen1, Siwoo Lee1, Yoonchan Jeong1, Byoungho Lee1 1. Seoul National University (Korea) |
| In this paper, we examine the optimization of spatial light modulator's phase profile in holographic displays, focusing on the effect of homography in distortion correction. Different homography methods are compared to find the most efficient one for handling complex distortions, especially in holographic displays employing lens arrays. | |
| 3Dp1-2 | Development of a 3D Reconstruction Service System by Using Opensource for Smartphone Users Matías Grijalba Acosta1, Danielle E. M. Krauch Bareiro1, Joel S. González Arrosse1, *Tzung-Han Lin2 1. Universidad Politécnica Taiwan-Paraguay (Paraguay), 2. National Taiwan University of Science and Technology (Taiwan) |
| This paper aims to create a system with a cloud server that facilitates the generation of 3D objects using smartphone cameras, empowering inexperienced users to create personalized 3D models. The backbone technology is a computer vision technique called “photogrammetry”, which infers geometric characteristics from the collection of photographs or videos. | |
| 3Dp1-3 | Development of Holographic Optical Elements with an Expanded Eyebox Ai Weng1, Hui-Chi Chen1, Hao-Ting Liao2, Chuan-Feng Kuo2, Tzu-An Chou2, *Chih-Hao Chuang3, Chien-Yu Chen2 1. Fu Jen Catholic University (Taiwan), 2. National Taiwan University of Science and Technology (Taiwan), 3. Feng Chia University (Taiwan) |
| This study aims to implement an optical system for near-eye displays based on holographic optical elements (HOEs) structure. The design and fabrication of the HOEs will involve beam splitters and pupil expanders. After the fabrication of the components, system integration and performance validation will be conducted. | |
| 3Dp1-4L | Real-time Aerial 3D Display Using Holographic Projector and Resin 3D Screen Junai Uchida1, Natsumi Furukawa1, Yuzuki Nakatani1, *Naoki Takada1 1. Kochi University (Japan) |
| We report on an aerial holographic 3D display. 4K-resolution holographic projector projects a focused 3D image on a resin 3D screen. The transmitted diffuse light generates an aerial 3D real image by retroreflectors. Finally, we realized a real-time aerial display of the 3D video comprising up to 21,972 points. | |
| 3Dp1-5L | Very Wide FOV in Holographic AR Display Using a Large HOE Fabricated by Area Segmentation and Multiple Exposures *Yusuke Sando1, Daisuke Barada2, Toyohiko Yatagai2 1. Osaka Research Institute of Industrial Science and Technology (Japan), 2. Utsunomiya University (Japan) |
| A large holographic optical element (HOE) has been fabricated by an originally developed recording system enabling the area segmentation and multiple exposures. An augmented reality (AR) 3D display with a very wide FOV of 34° and 25° has been successfully demonstrated based on the time division method. | |
| 3Dp1-6L | Holography via Monocular Depth Estimation *Ryota Kibune1, Chihiro Tsutake1, Keita Takahashi1, Toshiaki Fujii1 1. Nagoya University (Japan) |
| Holograms are usually computed from RGBD images or light fields, which requires special sensors. We demonstrate that holograms can be generated from an ordinary camera that captures monocular images alone via monocular depth estimation. | |
| 3Dp1-7L | Controlling Speckle and Resolution of Reconstructed Images by Vibrating Multimode Optical Fiber with a Cylindrical Piezoelectric Transducer in Electro-Holography *Koki Matsuno1, Yasuo Ito1, Yuji Sakamoto1 1. Hokkaido University (Japan) |
| To reduce the speckle of reconstructed images in electro-holography, reducing laser coherence is essential. We developed a device to vibrate a multimode optical fiber using a cylindrical piezoelectric transducer to reduce coherence. In addition to speckle, the resolution can be electronically controlled with this device. | |
| 3Dp1-8L | Lateral Electric Field Driving of High-resolution Liquid Crystal Devices for Electronic Holography with Wide Viewing-Zone Angle *Hiroto Tochigi1, Masakazu Nakatani1, Ken-ichi Aoshima2, Mayumi Kawana2, Yuta Yamaguchi2, Kenji Machida2, Nobuhiko Funabashi2, Hideo Fujikake1 1. Tohoku University (Japan), 2. Japan Broadcasting Corporation (Japan) |
| For an electronic holographic display with wide viewing-zone angle, we propose a lateral electric field drive system based on continuous potential-difference driving by lateral transparent electrodes. Light modulation was evaluated to confirm the independent driving of each pixel with high resolution of 1µm pitch. We also showed that by combination of driving and grounding electrodes, 2-dimensional driving is possible. |
Workshop on Applied Vision and Human Factors
| Dec. 6 | 13:00-14:20 | Room 302 B | VHF1 | Visual Ergonomics |
| Dec. 6 | 14:50-16:10 | Room 302 A | PRJ2/VHF2 | Imaging Technology and Installation |
| Dec. 7 | 13:30-14:50 | Room 302 A | VHF3 | Image Analysis |
| Dec. 8 | 13:30-14:30 | Room 302 A | VHF4 | Immersive Media |
| Dec. 6 | 17:00-18:20 | Exhibition Hall B | VHFp1 | Visual Comfort |
| Dec. 6 | 17:00-18:20 | Exhibition Hall B | VHFp2 | VHF Late News Posters |
VHF1: Visual Ergonomics
Dec. 6 13:00-14:20 Room 302 B
Chair: Masamitsu Harasawa (NHK)
Co-Chair: Shin-ichi Uehara (AGC)
| VHF1-1
13:00 |
Invited “Otogi Box”: a Cubic Haptic Interface to Tell a Story in Your Hands. *Makiko Azuma1, Takuya Handa1, Kazuteru Komine1 1. Japan Broadcasting Corporation (Japan) |
| We propose the “Otogi Box,” a cubic haptic interface designed to tell a story and offer an entirely new user experience by allowing users to feel the story in their hands. We collaborated with creators specializing in video and audio to create and exhibit tactile content using the “Otogi Box.” | |
| VHF1-2
13:20 |
Invited Invisible Comfort: Advancements in Bathing Pads for Ostomates Using Visual Illusions to Conceal Stoma Bags *Yuko Yotsumoto1 1. The University of Tokyo (Japan) |
| Living with an ostomy can lead to self-consciousness and discomfort, particularly when the stoma bag becomes visible during bathing. In this study, we investigated the advancements in bathing pads tailored for ostomates, with the objective of providing invisible comfort through the use of visual illusions to conceal stoma bags. The presentation will cover essential aspects such as design considerations, material selection, user experience, and testing ... | |
| VHF1-3
13:40 |
Measuring Viewing Distance and Posture with Front Cameras of Digital Devices to Support School Children's Health *Kazuto Ogiwara1, Takashi Shibata1 1. Tokai University (Japan) |
| Aiming to support children's health by reducing visual fatigue, progression of myopia, and physical fatigue caused by using digital devices, we developed a system to measure viewing distance and posture by capturing the user's face and body position with the front camera of their digital devices. | |
| VHF1-4L
14:00 |
Dependence of Gaze-Direction on Depth-of-Field under Constant Retinal Illuminance Condition: Investigation Employing Extended-Depth-of-Field (EDoF) Lenses in Japan *Sakuichi Ohtsuka1, Shoko Hira2, Masayuki Kashima2, Yasushi Miyajima3, Kazutoshi Kato3 1. International College of Technology, Kanazawa (Japan), 2. Kagoshima University (Japan), 3. Itoh Optical Industrial Co., Ltd. (Japan) |
| Relationship between depth-of-field and gaze-direction in the real world under constant retinal illumination condition is tested. An experiment reveals that the limits of attention were extended on both farther-right-side and near-both-sides by increases in depth-of-field, suggesting that the effect of depth-of-field extension provides more room for perceptual processing ability to cope with spur-of-the-moment situations. |
PRJ2/VHF2: Imaging Technology and Installation
Dec. 6 14:50-16:10 Room 302 A
Chair: Toshiyuki Amano (Wakayama University)
Co-Chair: Takashi Shibata (Tokai Univ.)
| PRJ2/VHF2-1
14:50 |
Invited Influences of Weight and Weight Balance of Head-Mounted Displays on Subjective Physical Burden and Postural Risk *Mitsunori Tada1, Kei Hyodo1,2, Hiroyasu Ujike1,3 1. National Institute of Advanced Industrial Science and Technology (Japan), 2. Yuasa System Co., Ltd. (Japan), 3. Tokyo Information Design Professional University (Japan) |
| This paper describes the results of experiments conducted to quantify the influence of weight and weight balance of head-mounted displays (HMDs) on subjective physical burden. Also, the results of computer simulations with digital human models are presented to predict the postural risk of wearing HMD with arbitrary weight and weight balance. | |
| PRJ2/VHF2-2
15:10 |
Construction of Immersive Art Space Using Mirror Display and Its Preliminary Evaluation *Ryohei Nakatsu1, Naoko Tosa1, Yunian Pang1, Satoshi Niiyama2, Tatsuya Munaka3, Yoshiyuki Ueda1, Masafumi Furuta3, Michio Nomura1 1. Kyoto University (Japan), 2. AGC Inc. (Japan), 3. Shimadzu Corporation (Japan) |
| We have constructed an immersive space that gives people a sense of being in a vast, immersive space by using mirror displays. In addition, we selected an artwork created by one of the authors and conducted a psychological experiment to evaluate the results of displaying the artwork in the space. | |
| PRJ2/VHF2-3
15:30 |
Psychological Evaluation of Video Art Focusing on Movement *Go Kazawa1, Naoko Tosa1, Manae Miyata2, Ryohei Nakatsu1 1. Kyoto University (Japan), 2. Seiko Epson Corporation (Japan) |
| Determining which elements of an artwork influence people's psychology is a challenging yet crucial question. Especially in the case of video art, it is expected that movement plays an important role. We have evaluated video art created by one of the authors focusing on movement through psychological experiments. | |
| PRJ2/VHF2-4L
15:50 |
Statistical Analysis of RGB Speckle Grains for Simulating Color Speckle Distributions *Junichi Kinoshita1, Kazuo Kuroda1, Kazuhisa Yamamoto1 1. Osaka University (Japan) |
| RGB speckle grain structure was analyzed using the measured speckle data for simulating color speckle distribution. The measured color speckle distributions took more triangular shapes than the conventionally calculated ones. The symmetry of peak-bottom distances and the dependency of peak-bottom irradiance differences on the distances were statistically analyzed. |
VHF3: Image Analysis
Special Topic of Interest on Artificial Intelligence and Smart Society
Dec. 7 13:30-14:50 Room 302 A
Chair: Yoshie Imai (Mitsubishi Elec.)
Co-Chair: Masamitsu Harasawa (NHK)
| VHF3-1
13:30 |
Reproducibility Evaluations and Calibration Sensitivity of Slanted Line Display MTF Measurements in Oversampling Conditions *Ingo Rotscholl1, Udo Krueger1 1. TechnoTeam Bildverarbeitung GmbH (Germany) |
| In this contribution we research calibration related impacts on MTF measurements using the Slanted Line approach in oversampling conditions. Based on this we propose a simplified workflow of the Slanted Line MTF method and conclude benefits and limitations of these setup conditions. | |
| VHF3-2
13:50 |
Optimizing Image Quality for CNN-based Image Style Transfer *Yi-Hsuan Hung1, Sn-Jin Chen1, Pei-Li Sun1, Zhon-Yu Chen2, Ming-Jin Huang2, Chia-Pin Chueh2 1. National Taiwan University of Science and Technology (Taiwan), 2. Printing Technology Research Institute (Taiwan) |
| Proposing a method to improve naturalness and clarity of images generated by CNN-based image style transfer. It includes analyzing the content image and the style reference to optimize the content-weight, using Super-resolution model to enhance the sharpness, and giving face regions higher content-weights to improve naturalness of the generated images. | |
| VHF3-3
14:10 |
Writing and Optical Characteristics of Anti-Glare Screens for Educational Use *Makio Kurashige1, Yosuke Kosaka1, Kazutoshi Ishida1, Takashi Shibata2 1. Dai Nippon Printing Co., Ltd. (Japan), 2. Tokai University (Japan) |
| For the educational use of anti-glare screens, it has been considered to balance optical characteristics including image quality, not only writing characteristics. By investigating several different anti-glare layers (AGLs), it was revealed that the optical and writing characteristics of AGLs were different according to their applications. | |
| VHF3-4L
14:30 |
Optimizing Confidence Score of YOLOv7 Human Detection based on Visual Perception in Dark Condition *Pei-Li Sun Sun1, Yi-Hsuan Hung1 1. National Taiwan University of Science and Technology (Taiwan) |
| This study aims to analyze the impact of background luminance on human detection in dark surround condition first. And then optimize the confidence score of YOLO human detection based on a deep learning model with the visual data. Make the YOLO model closer to the recognition results of human eyes. |
VHF4: Immersive Media
Special Topic of Interest on AR/VR and Hyper Reality
Dec. 8 13:30-14:30 Room 302 A
Chair: Nobuyuki Hiruma (NHK Foundation)
Co-Chair: Hiroyasu Ujike (Tokyo Information Design Professional Univ.)
| VHF4-1L
13:30 |
Invited Required Specification on Spatial Aspects for Ideal HMD Estimated on Head-Centered Coordinate System *Masamitsu Harasawa1, Yamato Miyashita1, Kazuteru Komine1 1. Japan Broadcasting Corporation (Japan) |
| If the ideal of an HMD is to provide a visual experience indistinguishable from what the naked eye does, its performance must surpass that of the human visual system. This study discusses the specifications that an ideal HMD should satisfy by describing the spatial characteristics of human visual system in terms of the head-centered coordinate system. | |
| VHF4-2L
13:50 |
Impacts of Constrained Rotation Axes on Cybersickness in Virtual Reality *Pei-Han Ko1, You-Sheng Zhang1, Li-Chen Ou1 1. National Taiwan University of Science and Technology (Taiwan) |
| This study used a series of psychophysical experiments to investigate whether and how constrained rotation axes in a virtual environment can have an impact on cybersickness. Experimental results show that among the three constraining rotation axes, the Yaw axis when restricted can cause the most serious cybersickness. | |
| VHF4-3L
14:10 |
Thermofiber: a Non-Contact, Head-Mounted Spatial Thermal Display Using Visible Light Heating by Optical Fibers *Masahiro Nishizawa1, Masamitsu Harasawa1, Takuya Handa1, Kazuteru Komine1 1. Japan Broadcasting Corp. (Japan) |
| Enhancing virtual realities (VR) immersion involves incorporating non-audio-visual sensations. This study introduces a non-contact thermal display attached to a head-mounted display, utilizing visible light heating through optical fibers. Users can experience spatial thermal sensations in VR, accurately perceiving the virtual heat source locations, which was assessed through a psychological experiment. |
VHFp1: Visual Comfort
Dec. 6 17:00-18:20 Exhibition Hall B
| VHFp1-1 | The Objective Quantification of Dynamic Spatial Distortions in Virtual Environments *Zhenping Xia1, Zixiong Peng1, Lingwei Gao1, Cheng Cheng1 1. Suzhou University of Science and Technology (China) |
| An Index of Spatial Structure Similarity based on the elastic potential energy is proposed for the objective quantification of the dynamic spatial distortions in virtual environments. The result of the perception experiment shows that the proposed method has the advantage of evaluating the perceived spatial distortions in virtual environments. | |
| VHFp1-2 | Physiologically- and Retina-Friendly Light Sources for eLearning Displays *Jwo-Huei Jou1, Po-Ting Yeh2, Dipanshu Sharma1, Yu-Lun Hsiao1, Wei-Zhu Lin1, Bo-Hsun Peng1 1. National Tsing Hua University (Taiwan), 2. National Taiwan University Hospital (Taiwan) |
| Display backlights with lesser blue emission cause lesser visual fatigue and provide higher legibility. They are also more physiologically- friendly at night. We will demonstrate how they enable longer viewing time and better clarity in eLearning displays, showcasing the effectiveness of blue-light filtering in safeguarding retina and melatonin secretion. |
VHFp2: VHF Late News Posters
Dec. 6 17:00-18:20 Exhibition Hall B
| VHFp2-1L | Spatially and/or Temporally Intermittent Display Method for Extra Power Saving under Disaster Situation *Tomoki Aoyama1, Tomokazu Shiga1 1. The University of Electro-Communications (Japan) |
| Power saving technique for smartphone displays by intermittently turn off the pixels and/or frames is proposed. Brightness reduction can be suppressed by the human visual characteristics. The subjective and objective experiments indicate brightness enhancement and adequate readability with the temporally intermittent display method, although blinking is perceived. | |
| VHFp2-2L | Deep Learning for Reducing Metameric Color Mismatch in Camera-based Display Measurement *Guang-Jhih Liou1, Pei-Li Sun1 1. National Taiwan University of Science and Technology (Taiwan) |
| The problems of metameric color mismatch in camera-based display measurement are solved to some extent through a deep learning model with the spectral parameters of the display's RGB primaries. |
Workshop on Projection and Large-Area Displays and Their Components
| Dec. 6 | 13:00-13:40 | Room 302 A | PRJ1 | Liquid Crystal Device |
| Dec. 6 | 14:50-16:10 | Room 302 A | PRJ2/VHF2 | Imaging Technology and Installation |
| Dec. 6 | 16:40-18:00 | Marine Hall | PRJ3/FMC3 | Automotive Display Technology |
| Dec. 7 | 10:50-11:50 | Snow Hall B | PRJ4 | Device and Component |
| Dec. 7 | 13:30-14:30 | Snow Hall B | PRJ5 | Smart Industry and Sensing Technology |
| Dec. 7 | 17:10-18:30 | Room 301 B | MVS2/PRJ6 | Metaverse Systems for Automotive Applications |
| Dec. 8 | 10:50-12:10 | Snow Hall B | PRJ7 | Aerial Display and Projection Mapping |
| Dec. 8 | 9:20-10:40 | Exhibition Hall B | PRJp1 | Projection Technologies |
PRJ1: Liquid Crystal Device
Dec. 6 13:00-13:40 Room 302 A
Chair: Dieter Cuypers (Ghent University)
Co-Chair: Makio Kurashige (Dai Nippon Printing)
| PRJ1-1
13:00 |
Invited Flat Optical Chiral Liquid Crystal Diffractive Elements for Efficient Beam Combiners in Augmented Reality Devices *Kristiaan Neyts1,2,3, Brecht Berteloot3, Migle Stebryte3, Rohan Sharma3, Inge Nys3 1. Hong Kong University of Science and Technology (Hong Kong), 2. State Key Laboratory of Advanced Displays and Optoelectronics Technologies (Hong Kong), 3. Ghent University (Belgium) |
| Nematic liquid crystal with chiral dopant self-organizes into a helical structure that efficiently reflects circularly polarized light within a certain wavelength range. Diffractive optical properties can be realized by using variable photoalignment. Linear gratings, spherical lenses or other components can be designed for use in augmented reality. | |
| PRJ1-2
13:20 |
LCD Splicing Screen Optical Seam Elimination Effect Improvement and Cost Reduction *Yana Li1,2, Wenxue Huo1, Feng Zheng1, Hongyuan Xu1 1. Peking University ShenZhen Graduate School (China), 2. China star Optoelectronics Technology (China) |
| Cut one lens into two from the middle and place them at the seams of screens to achieve seam elimination. The darkened area of picture is smaller, while reducing costs. The use of electronically controlled liquid crystal lens can further reduce the cost, and the scheme is simulated and verified. |
PRJ2/VHF2: Imaging Technology and Installation
Dec. 6 14:50-16:10 Room 302 A
Chair: Toshiyuki Amano (Wakayama University)
Co-Chair: Takashi Shibata (Tokai Univ.)
| PRJ2/VHF2-1
14:50 |
Invited Influences of Weight and Weight Balance of Head-Mounted Displays on Subjective Physical Burden and Postural Risk *Mitsunori Tada1, Kei Hyodo1,2, Hiroyasu Ujike1,3 1. National Institute of Advanced Industrial Science and Technology (Japan), 2. Yuasa System Co., Ltd. (Japan), 3. Tokyo Information Design Professional University (Japan) |
| This paper describes the results of experiments conducted to quantify the influence of weight and weight balance of head-mounted displays (HMDs) on subjective physical burden. Also, the results of computer simulations with digital human models are presented to predict the postural risk of wearing HMD with arbitrary weight and weight balance. | |
| PRJ2/VHF2-2
15:10 |
Construction of Immersive Art Space Using Mirror Display and Its Preliminary Evaluation *Ryohei Nakatsu1, Naoko Tosa1, Yunian Pang1, Satoshi Niiyama2, Tatsuya Munaka3, Yoshiyuki Ueda1, Masafumi Furuta3, Michio Nomura1 1. Kyoto University (Japan), 2. AGC Inc. (Japan), 3. Shimadzu Corporation (Japan) |
| We have constructed an immersive space that gives people a sense of being in a vast, immersive space by using mirror displays. In addition, we selected an artwork created by one of the authors and conducted a psychological experiment to evaluate the results of displaying the artwork in the space. | |
| PRJ2/VHF2-3
15:30 |
Psychological Evaluation of Video Art Focusing on Movement Go Kazawa1, Naoko Tosa1, Manae Miyata2, *Ryohei Nakatsu1 1. Kyoto University (Japan), 2. Seiko Epson Corporation (Japan) |
| Determining which elements of an artwork influence people's psychology is a challenging yet crucial question. Especially in the case of video art, it is expected that movement plays an important role. We have evaluated video art created by one of the authors focusing on movement through psychological experiments. | |
| PRJ2/VHF2-4L
15:50 |
Statistical Analysis of RGB Speckle Grains for Simulating Color Speckle Distributions *Junichi Kinoshita1, Kazuo Kuroda1, Kazuhisa Yamamoto1 1. Osaka University (Japan) |
| RGB speckle grain structure was analyzed using the measured speckle data for simulating color speckle distribution. The measured color speckle distributions took more triangular shapes than the conventionally calculated ones. The symmetry of peak-bottom distances and the dependency of peak-bottom irradiance differences on the distances were statistically analyzed. |
PRJ3/FMC3: Automotive Display Technology
Special Topic of Interest on Automotive Displays
Dec. 6 16:40-18:00 Marine Hall
Chair: Yosuke Asai (Panasonic)
Co-Chair: Hirotsugu Yamamoto (Utsunomiya University)
| PRJ3/FMC3-1
16:40 |
Invited Image Steering by MEMS SLM for Near-to-eye AR Display Engines *Yuzuru Takashima1, Parker Liu1, Ted Liang-tai Lee Lee1, Chuan Luo1, Brandon Friedman1, Gregory Nero1, Yexin Pei1, Tianyao Zhang1, Xianyue Deng1, Jeff Ching-wen Chan1, Eunmo Kang1, Jeff Chen 1 1. University of Arizona (United States of America) |
| Beam and image steering by Micro Electro Mechanical System (MEMS) spatial light modulators decouples trade-offs between resolution, field of view, and size of display panel and optics. MEMS based image steering solves optical design challenges commonly found in the Augmented Reality display engines. | |
| PRJ3/FMC3-2
17:00 |
Invited Laser Signal Projection for Effective Lane Change on Expressway *Makio Kurashige1, Shumpei Nishio1, Kazutoshi Ishida1, Osamu Shimada1, Shinsuke Nomura2 1. Dai Nippon Printing Co., Ltd. (Japan), 2. Hanshin Expressway Engineering Co., Ltd. (Japan) |
| For the purpose of reducing the traffic accidents at the construction zone of the expressway, “guiding arrows” on the road are realized by the laser signal projectors. The ratio of incoming vehicles was decreased from 13.9 % to 0.9 % by the combination with internally illuminated warning signs. | |
| PRJ3/FMC3-3
17:20 |
Deblur Image Processing System for Full Color Aerial Imaging Optics *Hayato Kikuta1,2, Masaki Yasugi2,3, Hirotsugu Yamamoto2 1. Mitsubishi Electric Corp. (Japan), 2. Utsunomiya University (Japan), 3. Fukui Prefectural University (Japan) |
| We propose an image processing system that corrects the blur peculiar to aerial images for each color wavelength. We construct a display environment for correcting the blurring during actual aerial imaging, and compare the blurring correction effect with the results of simulating image processing. | |
| PRJ3/FMC3-4
17:40 |
Aerial Guide Improves Sense of Floating of Aerial Image Formed with AIRR and Fresnel Lens *Shinya Sakane1,2, Shiro Suyama1, Hirotsugu Yamamoto1 1. Utsunomiya University (Japan), 2. Seiwa Electric Mfg. Co., Ltd. (Japan) |
| We introduce an aerial guide to make observers perceive the aerial image floating at a long range. The aerial guide is a frame that surrounds the aerial sign on the aerial image plane. Adding movement to the aerial guide was found to be more effective to give sense of floating. |
PRJ4: Device and Component
Dec. 7 10:50-11:50 Snow Hall B
Chair: Tetsuji Suzuki (JVC Kenwood)
Co-Chair: Juiwei Pan (National Chiao Tung University)
| PRJ4-1
10:50 |
Invited Complex Holographic Display via Spatial Complex Light Modulation *Wenqi Wang1, Jun Xia1, Sen Liu1, Yutong Cai1, Yixing Chen2 1. Southeast University (China), 2. SMARTVISION (China) |
| We proposed a complex valued method based on stochastic gradient descent (SGD) and a complex valued neural network to achieve holographic imaging. We introduced an optical filter to constrain the spectrum of the complex amplitude. The experiment results show that the complex amplitude modulation can achieve a high-quality holographic display. | |
| PRJ4-2
11:10 |
Towards a Full-Color MicroLED Display with a Patterned Quantum Dot Color Conversion Layer *Dieter Cuypers1, Harindra Kumar Kannojia1, Geert Van Steenberge1 1. imec - Ghent University (Belgium) |
| Micro-light-emitting diode (microLED) based displays are a very promising technology. An advantageous route for realizing full-color microLED displays is using blue microLEDs with a color conversion layer based on quantum dot materials for red and green. We report on suitable patterning techniques for the quantum dot layers. | |
| PRJ4-3
11:30 |
Single Panel LCD Projector with High Uniformity *Wei Ting Chen1, Pei Yu Lin1, Jui Wen Pan1 1. National Yang Ming Chiao Tung University (Taiwan) |
| Our single-panel LCD projector utilizes a direct-lit LED array with Fresnel lenses for light collimation. LED array arranged hexagonally for uniform light distribution on LCD panel. Extending optical distance between LED units and LCD panel eliminates hot spots, enabling sufficient light mixing. Köhler illumination ensures adequate and homogeneous screen illumination. Our design achieves 43.8% optical efficiency and 90.1% uniformity. |
PRJ5: Smart Industry and Sensing Technology
Dec. 7 13:30-14:30 Snow Hall B
Chair: Muneharu Kuwata (Mitsubishi Electric)
Co-Chair: Hidekazu Hatanaka (Ushio)
| PRJ5-1
13:30 |
Invited Advantages of Utilizing DMD/DLP Technology for the Future of Additive Manufacturing and Electronics Manufacturing *Sebastian Aske1 1. Visitech Co., Ltd. (Norway) |
| This paper discusses why DMD/DLP technology combined with scanning as a means of reliable manufacturing of large area components and parts, and investigates advantages and possible reasons why using this technology is growing within additive manufacturing and electronics manufacturing, | |
| PRJ5-2
13:50 |
Invited Si-MPPC Three-dimensional Image Sensor for Flash LIDAR *Takahide Mizuno1, Hirokazu Ikeda1, Terumasa Nagano2, Tatsuya Hashi2, Takashi Baba2, Shunsuke Adachi2, Sinya Iwashina2, Shigehito Shimizu1, Takeshi Sekiguchi1 1. Japan Aerospace Exploration Agency (Japan), 2. Hamamatsu Photonics K.K. (Japan) |
| JAXA has been developing Flash LIDAR as an obstacle detection sensor for lunar and planetary landers and for on-orbit rendezvous. In this report, we introduce a three-dimensional image sensor using Si-MPPC, which was developed for use in orbital rendezvous. | |
| PRJ5-3L
14:10 |
Challenge for Millimeter-Wave Imaging System for Remote Security Inspection *Hiroshi Murata1,2, Arie Setiawan1, Shu Sato1, Hitoshi Nohmi3, Naruto Yonemoto4 1. Mie University (Japan), 2. Osaka University (Japan), 3. Alouette Technology Inc (Japan), 4. Electronic Navigation Research Institute (Japan) |
| We have been trying to develop millimeter-wave imaging systems with the complex integral/correlation technique for security checking and testing applications in a public space. Recent experimental results on 2- and 3-dimensional image generations using W-band (75-110 GHz) millimeter-wave signals are reported. |
MVS2/PRJ6: Metaverse Systems for Automotive Applications
Special Topic of Interest on Automotive Displays
Dec. 7 17:10-18:30 Room 301 B
Chair: Satoshi Ouchi (Hitachi)
Co-Chair: Kazuhiro Ohara (Visitech)
| MVS2/PRJ6-1
17:10 |
BMW Vision Dee - Technological Challenges for the Next Generation of Advanced Automotive Displays *Mark Riebe1, Michael Brachvogel1 1. BMW AG (Germany) |
| The BMW Vision DEE concept car shown at CES 2023 has demonstrated various advanced display concepts. This talk will dive into the technological challenges related with these concept with a special focus on the advanced head-up display. | |
| MVS2/PRJ6-2
17:30 |
A Novel Fully Transparent Photoluminescent Display and Its Vehicle Applications *Ted Sun1, Leonard Sun1 1. sun innovations inc (United States of America) |
| A fully transparent emissive display is developed, using novel RGB emissive nanomaterials that can be selectively excited by digital projection of 3 violet-blue wavebands. The novel photoluminescent display enables a scalable and freeform emissive display onto any surfaces, including vehicle glass windows, with high display quality and superior optical clarity. | |
| MVS2/PRJ6-3
17:50 |
Measuring Optical Performance of Near-Eye Displays *Yiming Li1, Wan-Pin Tsai1, Tsung-Xian Lee1 1. National Taiwan University of Science and Technology (Taiwan) |
| In recent years, the near-eye display market has grown gradually, and how to accurately measure the performance of the display is an important research topic. This research uses a combined lens design and an industrial camera to form the measurement system. The above measurement system was used to measure and compare the three indicators of luminance, contrast and transparency of commercially available near-eye displays. | |
| MVS2/PRJ6-4L
18:10 |
Automotive AR HUD Image Correction Using Computer-Generated Holographic Technology *Chen Han-Syuan1, Tzu-An Chou1, Chih-Hao Chuang2, Chien-Yu Chen1 1. National Taiwan University of Science and Technology (Taiwan), 2. Feng Chia University (Taiwan) |
| This study proposes a new holographic method to improve Head-Up Display (HUD) systems in vehicles. By combining an angled windshield and the Modified Gerchberg-Saxton Algorithm (MGSA), our augmented reality (AR) HUD system effectively reduces image distortion. |
PRJ7: Aerial Display and Projection Mapping
Special Topic of Interest on AR/VR and Hyper Reality
Dec. 8 10:50-12:10 Snow Hall B
Chair: Hirotsugu Yamamoto (Utsunomiya University)
Co-Chair: Yoshihiro Watanabe (Tokyo Institute of Technology)
| PRJ7-1
10:50 |
Invited Virtual Material Creation by High-speed Projection *Leo Miyashita1 1. Tokyo University of Science (Japan) |
| This invited talk introduces material display systems based on high-speed projection. The high-speed projection light virtually reproduces real materials and produces augmented materials beyond physics in the real world. In this talk, the principles of augmentation and technologies behind the display are explained. | |
| PRJ7-2
11:10 |
Invited Laser Aerial Projection Systems using Drone *Masato Ishino1, Kazuhisa Yamamoto1 1. Osaka University (Japan) |
| Combination of lasers and drones can display a desired image at a desired location in the air. By projecting from a scanning-type laser projector mounted on a drone onto a transmissive screen suspended from another drone, we succeeded in displaying a large and clear image in the sky. | |
| PRJ7-3
11:30 |
Astigmatism and Circle of Least Confusion due to Distortion of Beam Splitter in Large Aerial Display *Mayu Adachi1, Shiro Suyama1, Hirotsugu Yamamoto1 1. Utsunomiya University (Japan) |
| We clarify the focusing regions of a large aerial display that employs an acrylic plate as a beam splitter, which causes astigmatism by self-weight distortion. This astigmatism changes focused distance in the horizontal and vertical directions. Circle of least confusion and its distance are obtained from the two focused distances. | |
| PRJ7-4L
11:50 |
A Wide-Viewing and High-Resolution Head-Mounted Display Using Multiple Display Panels *Saya Mizutani1, Yasutaka Maeda1, Takuya Handa1, Kensuke Hisatomi1, Daiichi Koide1 1. NHK (Japan) |
| We developed a wide field-of-view (FOV) and high-resolution head-mounted display (HMD) for the purpose of evaluating the influence of high-resolution on central and peripheral views by the head-mounted display to the user's viewing experience and its perceptual characteristics. In this study, we evaluate its performance and verify its operation. |
PRJp1: Projection Technologies
Dec. 8 9:20-10:40 Exhibition Hall B
| PRJp1-1L | The Computer-generated Hologram Display Based on Holographic Combiner with Expanded FOV by Scanning Mirror *Shao-Kui Zhou1, Wen-Kai Lin3, Chun-Chia Chen2, Hung-Hui Huang2, Bor-Shyh Lin1, Wei-Chia Su2 1. National Yang Ming Chiao Tung University (Taiwan), 2. National Changhua University of Education (Taiwan), 3. National Central University (Taiwan) |
| This study proposed a scanning CGH display system to increase the FOV. The aberration caused by the VHOE is analyzed and corrected. The horizontal FOV with 6.4μm pixel size SLM achieve 21°. The eyebox is 5.8mm by 4.6mm (HXV) while the SLM resolution is 1920 by 1080 (HXV) |
Workshop on Electronic Papers and Nonvolatile Displays
| Dec. 6 | 14:50-16:10 | Room 302 B | EP1 | Electrophoretic Displays |
| Dec. 6 | 16:40-17:40 | Room 302 B | EP2 | Nonvolatile Displays |
| Dec. 7 | 9:00-10:00 | Room 302 B | EP3 | Electrochromic Displays (1) |
| Dec. 7 | 15:20-16:40 | Room 302 B | EP4 | Electrochromic Displays (2) |
| Dec. 6 | 13:20-14:40 | Exhibition Hall B | EPp1 | Electronic Paper Technologies (1) |
| Dec. 7 | 11:10-12:30 | Exhibition Hall B | EPp2 | Electronic Paper Technologies (2) |
EP1: Electrophoretic Displays
Dec. 6 14:50-16:10 Room 302 B
Chair: Keisuke Hashimoto
Co-Chair: Makoto Omodani (Tokyo Denki University)
| EP1-1
14:50 |
Invited Electrophoretic Color Displays *HongMei Zang1, Craig Lin1, Suhasini Kishore1, Muhanad Jajil1, Haiyan Gu1, Mary Parent1, Yajuan Chen1, Karen Du1 1. E Ink Corporation (United States of America) |
| E Ink Spectra 6 is the most recent addition to the Spectra product line. It offers superior color saturation as well as a 30:1 black-white contrast ratio. The Spectra 6 display module employs a specialized dithering algorithm, enabling full-color image representation. Each pixel on the module can display red, yellow, green, blue, white, or black. | |
| EP1-2L
15:10 |
Invited A 10.3” Full Color EWD Prototype *Alex Henzen1, Biao Tang2, Linwei Liu2, Benpeng Zhong2, Dong Yuan2, Zhuhui Li3, Jiangbo Yao3, Xin Zhang3 1. HenzenTechnology B.V. (Netherlands), 2. South China Normal University (China), 3. TCL China Star Optoelectronics Technology Co. Ltd (China) |
| A 10.3”, 1152 x 1536 183 PPI reflective color display was manufactured by custom design of an oxide-TFT backplane with GOA gate structure. The display was subsequently formed by patterning a pixel structure for an electrowetting display and forming a 3 cell sandwich with cyan, magenta and yellow panels. The completed unit was driven by custom built drive electronics. | |
| EP1-3L
15:30 |
Invited Controlling the Cell Components for Flexible Electrochromic Devices *Jinwoo Park1, Alvin Wei Ming Tan1, Pooi See Lee1 1. Nanyang Technological University (Singapore) |
| To meet the future demands of electrochromic devices (ECDs), it is highly essential to investigate the cell components compatible for flexible/stretchable ECDs. The cell components such as flexible substrate (ITO/PET), polymer-based electrolytes, and redox-mediator-included electrolyte have been studied to achieve high-performance flexible/stretchable ECDs. | |
| EP1-4L
15:50 |
Flexible Multicolor Rewritable Paper Coated with Metallosupramolecular Polymers for Electrochromic Printing and Natural Erasing by Humidity *Masayoshi Higuchi1, Satya Ranjan Jena1, Jian Zhang1 1. National Institute for Materials Science (Japan) |
| Stamping an image on paper with ink is a conventional approach to displaying information. As a next-generation display, a stimuli-responsive rewritable paper has attracted considerable attention. In this study, we present an electrically color print-ing approach using electrochromic (EC) Fe(II) and Ru(II)-based metallosupramolecular polymers (MSPs), which were synthesized via complexation of the metal ions and a chelating terpyridine ligand. |
EP2: Nonvolatile Displays
Dec. 6 16:40-17:40 Room 302 B
Chair: Makoto Omodani (Tokyo Denki University)
Co-Chair: Keisuke Hashimoto
| EP2-1
16:40 |
Invited Energy-Saving Effect of Smart Windows *Kazuki Yoshimura1 1. AIST (Japan) |
| This explains the factors determining the energy-saving effects of smart windows. The extent to which the annual heating and cooling load can be reduced by using smart windows depends on the changing level of shading coefficients between the cooling and heating seasons. | |
| EP2-2
17:00 |
Smart Window Based on Electrophoretic Display *Guangyou Liu1, Yunhe Liu1, Qitian Fan1, Jie Liu1, Zhuohang Li1, Zheng Zeng1, Feng Xiong1, jinlan Yang1, Xinzao Wu1, Tao Zhou1, Xidu Wang2, Bo-Ru Yang1 1. Sun Yat-Sen University (China), 2. South China University of Technology (China) |
| We fabricated a smart window based on electrophoretic display (EPD) technology, switching between white and transparent states by changing the stacking states of particles on the electrodes. Lateral driving EPD exhibits high transmittance, fast response, and high contrast ratio. This work demonstrated that EPD has great potential for practical smart windows. | |
| EP2-3L
17:20 |
Exploring Organometallic Bonding in Heterometallo-Supramolecular Polymers: A Path to NIR Electrochromism *Banchhanidhi Prusti1, Takashi Sato1, Chih-Wei Hu1, Jian Zhang1, Masayoshi Higuchi1 1. National Institute for Materials Science (NIMS) (Japan) |
| In our research endeavors, we have synthesized a series of metallo-supramolecular polymers with organometallic bonds, specifically PolyRuRu, PolyRuFe, and PolyRuZn. Notably, PolyRuZn exhibited absorption within the NIR region at around 1100 nm with high contrast ratio (ΔT > 60%), impressive color efficiency (η = 333 cm2/C), within the NIR spectrum. |
EP3: Electrochromic Displays (1)
Dec. 7 9:00-10:00 Room 302 B
Chair: Norihisa Kobayashi (Chiba Univ.)
Co-Chair: Masayoshi Higuchi (NIMS)
| EP3-1
9:00 |
Invited Multi-Layer Anti-Counterfeit Labels Based on Electrochromism : from Materials to Displays *Aline Rougier1 1. ICMCB (France) |
| Electrochromic Displays (ECDs), known for their ability to modify their visual appearance under an applied voltage, are described as an efficient technology in smart anti-counterfeit labels. Fabricated on paper and produced from lab techniques including doctor blading and serigraphy to large scale depositions, multi-layer devices based on PEDOT are highlighted. | |
| EP3-2
9:20 |
Invited Highly Flexible Large-Area Electrochromic Devices with Viologen Hybrid Derivatives *Jong S. Park1, Fayong Sun1, Do Yeon Kim1, Raksha Pal1 1. Pusan National University (Korea) |
| The current proceeding briefly addresses the growing demand for flexible large-area electrochromic devices (ECDs). It also highlights the synthesis and properties of various viologen derivatives and their structural modifications applicable for flexible and deformable ECDs, along with optimized coating methods and after-treatment conditions. | |
| EP3-3L
9:40 |
Reversible Electrochromic/Electrofluorochromic Dual Switching in Zn(II)-Based Metallo-Supramolecular Polymer Film *Susmita Roy1, Sanjoy Mondal1, Dines Chandra Santra1, Narayana Sri Lakshmi Venkata Yemineni1, Takefumi Yoshida1, Yoshikazu Ninomiya1, Masayoshi Higuchi1 1. National Institute for Materials Science (NIMS) 1-1 Namiki (Japan) |
| The introduction of novel materials with multifunctional chromogenic properties, such as electrochromic/electrofluorochromic (EC/EFC) properties, has recently attracted prospective interest in the development of various optoelectronic devices. In this work, a novel Zn(II)-based metallo-supramolecular polymer (polyZn) has been developed as an ON/OFF switchable EFC application with prominent EC behavior. The polymer thin-film exhibited a reversible brilliant yellow to green colour EC ... |
EP4: Electrochromic Displays (2)
Dec. 7 15:20-16:40 Room 302 B
Chair: Shuichi Maeda (Tokai Univ.)
Co-Chair: Masayoshi Higuchi (NIMS)
| EP4-1
15:20 |
Invited Development of Electrochromic Redox-Active Ionic Liquids and Their Application to Electrochromic Devices *Hironobu Tahara1, Hiroto Murakami1 1. Nagasaki University (Japan) |
| Redox-active ionic liquids (RAILs) are a new class of ionic liquids, which are non-volatile, electro-conductive, viscous, and concentrated liquid materials. We have developed RAILs with electrochromic behavior and applied them to electrochromic devices without adding solvents and supporting electrolytes. | |
| EP4-2
15:40 |
Deposition Control of Silver Nanoparticles in Metal LSPR-Based Electrochromic Device Using Polymer Capping Agent *Shun Uji1, Kazuki Nakamura1, Norihisa Kobayashi1 1. Chiba University (Japan) |
| We have studied Ag deposition-based electrochromic (EC) device that can represent various optical states. In this study, polyvinylpyrrolidone (PVP) was introduced to the Ag deposition-based EC device as a capping agent of deposited Ag nanoparticles (AgNP). Because of the capping effect of PVP, the aggregation of AgNP was prevented and chromatic color was represented by the application of constant voltage. | |
| EP4-3L
16:00 |
Ru(II)-based Metallo-supramolecular Polymer/Layered Inorganic-organic Covalently Bonded Hybrid Composites for Improved Electrochromic Properties *Kazuko Fujii1, Dines Chandra Santra1, Manas Kumar Bera1, Takatsugu Wakahara1, Kazuhiko Sakata1, Ritsuko Nagahata2, Masayoshi Higuchi1 1. National Institute for Materials Science (Japan), 2. National Institute for Advanced Industrial Science and Technology (Japan) |
| Metallo-supramolecular polymer (MSP) is known as a good electrochromic (EC) material. In order to improve EC properties, we prepared composites of MSP and a layered inorganic-imidazoline covalently bonded hybrid (LIIm) by simply mixing them and revealed that the combining with LIIm have provided improvements on the EC properties. | |
| EP4-4L
16:20 |
Degradation Analysis of Electrochromic Devices Using a New Method *Shifa Sarkar1,2, Masayoshi Higuchi1,2 1. Osaka University (Japan), 2. National Institute for Materials Science (Japan) |
| In this work, polyFe and NiHCF thin films for the electrochromic devices were fabricated by a spray coating method which was used as working and counter electrodes, respectively. Based on a long-term cycling test, we investigated the performance degradation phenomenon of the polyFe-based electrochromic devices (ECD) using photos and movies. |
EPp1: Electronic Paper Technologies (1)
Dec. 6 13:20-14:40 Exhibition Hall B
| EPp1-1 | E-book with Animation Playing Capability Based on Liquid Crystal Display Technology *Pengcheng Liu1, Manchun Tseng1, Szeyan Yeung1, Hoising Kwok1 1. The Hong Kong University of Science and Technology (Hong Kong) |
| Electronic ink (E-ink) displays have become increasingly popular in e-books due to their paper-like appearance, readability in direct sunlight, low power consumption, and flexible sizing. However, the slow switching speed of bistable LCDs and E-ink limits their ability to play animations. This paper proposes a novel method for fabricating fast-switching bistable liquid crystal displays capable of playing animations. The research is based on a new ... |
EPp2: Electronic Paper Technologies (2)
Dec. 7 11:10-12:30 Exhibition Hall B
| EPp2-1 | Improvement of the Warpage of E-paper Reader TFT Backplane in G8.6 0.5mm Glass *Hejing Zhang1, Chunyan Lin1, Junlong Fan1, Zhen Liu1, Jinn Hung1, James Hsu1, Wade Chen1 1. Chongqing HKC Optoelectronics technology Co., Ltd. (China) |
| Through the key thin film tunning, we solved the warpage phenomenon of the small size (6 inch) E-paper reader TFT backplane fabricated in G8.6 0.5mm mother glass for the first time. The tuned TFT backplane show excellent electrical and mechanical characteristics for E-paper reader. | |
| EPp2-2L | Synthesis of Antimony Doped Tin Oxide Ink and Addition of Invisible Information in Color Design *Chiali Nakamura1, Sara Kitamura1, Shuichi Maeda1 1. Tokai University (Japan) |
| We have synthesized an antimony-doped tin oxide ink with light coloration. In addition to that, by performing the process of interpolating the color difference between the color of the image to be given invisible information and the ATO ink, we have succeeded in giving invisible information on multiple color images. |
Workshop on MEMS and Emerging Technologies for Future Displays and Devices
| Dec. 6 | 13:00-14:20 | Snow Hall A | MEET1 | Novel Materials, Fundamental Components and Process Technologies |
| Dec. 6 | 14:50-16:10 | Snow Hall A | MEET2 | EL Quantum Dots Technologies |
| Dec. 6 | 16:40-18:00 | Snow Hall A | MEET3 | Emerging Quantum Dots and Nanotechnologies (1) |
| Dec. 7 | 9:00-10:20 | Snow Hall A | MEET4 | Emerging Quantum Dots and Nanotechnologies (2) |
| Dec. 7 | 10:50-12:10 | Snow Hall A | MEET5 | Emerging Quantum Dots and Nanotechnologies (3) |
| Dec. 7 | 13:30-14:30 | Snow Hall A | MEET6 | Emerging Quantum Dots and Nanotechnologies (4) |
| Dec. 7 | 15:20-16:40 | Snow Hall A | MEET7 | Micro/NanoDisplays and Nanotechnology Application (1) |
| Dec. 7 | 17:10-18:10 | Snow Hall A | MEET8 | Micro/NanoDisplays and Nanotechnology Application (2) |
| Dec. 8 | 9:00-10:20 | Snow Hall A | MEET9 | Micro/NanoDisplays and Nanotechnology Application (3) |
| Dec. 8 | 10:50-12:10 | Snow Hall A | MEET10 | Micro/NanoDisplays and Nanotechnology Application (4) |
| Dec. 7 | 9:20-10:40 | Exhibition Hall B | MEETp1 | Micro/NanoDisplays: Novel Materials, Components and Process Technologies |
MEET1: Novel Materials, Fundamental Components and Process Technologies
Dec. 6 13:00-14:20 Snow Hall A
Chair: Jin Jang (Kyung Hee University)
Co-Chair: Patrick Le Maitre (CEA-LETI)
| MEET1-1
13:00 |
Invited “Nano-in-Nano”: Combining Bottom-Up Fabrication Techniques to Create Nanoscale Electronic Devices Using Nanomaterials Umer F Ahmed1, Gwenhivir S Wyatt-Moon1, *Andrew John Flewitt1 1. University of Cambridge (UK) |
| There has long been a desire to use the properties of nanomaterials in electronic devices. The lateral growth of ZnO nanowires is demonstrated between coplanar metal electrodes that have also been fabricated using a bottom up adhesion lithography process such that the gap between the electrodes is ∼10 nm. | |
| MEET1-2
13:20 |
Invited Flat Optics from Lab to Fab: 300mm Glass Wafer Metasurface Platform for Functional Diffractive Optical Devices *Robert Jan Visser1, Ludovic Godet1, Guannan Chen1, Rutger Thijssen1, Jinxin Fu1, Rami Hourani1 1. Applied Materials (United States of America) |
| Metasurface-based optics is revolutionizing the world of optics for new functions and much smaller form factors through nanostructured diffraction element wavefront engineering. The field's maturation calls for industrial manufacturing solutions for existing refractive optics products. This paper describes a flat optics platform built for 300mm glass wafers. | |
| MEET1-3
13:40 |
Invited Various Lighting Sources with Carbon Nanotube Based Cold Cathode Electron Beam (C-Beam) Irradiation Technique *Kyu Chang Park1, Ketan Bohtkar1 1. Kyung Hee University (Korea) |
| The display industry required various lighting sources technology as well using an electron beam irradiated lighting. We fabricated a C-beam using (VACNTS) as an electron source for lighting techniques. By using a C-beam irradiation technique, various UV light ranging from UVA, B, and C through EUV and then x-ray wavelength were developed. | |
| MEET1-4
14:00 |
Simultaneous Imaging and Spectroscopy with Pixelized Gradient Thickness Optical Filter *Pratyasha Sahani1, Shiori Nabana1, Taiyu Okatani1, Yoshiaki Kanamori1 1. Tohoku University (Japan) |
| We propose a pixelized gradient thickness color filter as the compact and space-saving element for achieving simultaneous imaging and spectroscopy using a single image sensor. By replacing the RGB filter integrated in portable devices this can serve the novel purpose on the same platform, and hence makes the device versatile. |
MEET2: EL Quantum Dots Technologies
Special Topic of Interest on Quantum Dot Technologies
Dec. 6 14:50-16:10 Snow Hall A
Chair: Xiao Wei SUN (Southern University of Science and Technology)
Co-Chair: Haizheng Zhong (Beijing Institute of Technology)
| MEET2-1
14:50 |
Invited Developing All Solution Processed Three-Layer Red, Green, and Blue Biomass Carbon Dots Light Emitting Devices *Muttulingham Kumaraverl1, George Robert Fern1, Aqeel Khan1, Myles Worsley1, Pufinji Obene2, Oliver Buchan2 1. Brunel University London (UK), 2. Precision Varionic International (UK) |
| We demonstrate the process used to make Light Emitting Diode devices from carbon dots, where red, green and blue materials are synthesised using biomass and contain three process layers prepared using solution based spin coating. All our CDs are made using plant-based household food by-products as the chosen carbon sources. | |
| MEET2-2
15:10 |
Invited Fluorescent Organic Nano-dots as Efficient Color Conversion Layers *Jang Hyuk Kwon1, Rasheeda Ansari 1 1. Kyung Hee University (Korea) |
| Color conversion layers (CCLs) play a crucial role in enhancing the visual performance of display technologies by efficiently converting light from short wavelengths to longer wavelengths. In this study, we propose a novel approach for color conversion film fabrication using organic nano-dots (ONDs). These nano-dots, comprised of organic fluorescent materials and surfactant molecules, offer unique advantages such as tunable optical properties, high color conversion quantum ... | |
| MEET2-3
15:30 |
Invited Quantum Dot Image Sensors: Scalable Technology Enabling Accessible Infrared Vision *Pawel E Malinowski1, Vladimir Pejovic1, Abu Bakar Siddik1,2, Mahmoud Hamamou1,2, Arman Uz Zaman1, Itai Lieberman1, Joo Hyoung Kim1, Myung Jin Lin1, Luis Moreno Hagelsieb1, Isabel Pintor Monroy1, Wenya Song1, Nikolas Papadopoulos1, Jonas Bentell1, Steven Thijs1, Naresh Chandrasekaran1, Gauri Karve1, Paul Heremans1,2, Jiwon Lee3, David Cheyns1 1. imec (Belgium), 2. KU Leuven (Belgium), 3. Hanyang University (Korea) |
| Colloidal quantum dots form the basis for a new class of image sensors. Thanks to monolithic integration of the photodiode stack on readout, a scalable fabrication process can be realized. Tunable sensitivity spectrum enables broadband imaging beyond human vision in high resolution and compact form factor, leading to new applications. | |
| MEET2-4
15:50 |
Invited InP-based Quantum Dot Solutions for Efficient and Reliable Color Conversion in MicroLED Applications Himanshu Jena1, Mohammad Kiaee1, Igor Nakonechnyi1, *Willem Walravens1 1. QustomDot (Belgium) |
| In this talk, QustomDot presents its developments of InP-based Quantum Dot products that can be applied as color conversion layers in microLED and OLED display applications. The talk will touch on technical challenges, on strategies to deliver color conversion, and on collaborations that can accelerate the manufacturing of microLED products. |
MEET3: Emerging Quantum Dots and Nanotechnologies (1)
Special Topic of Interest on Quantum Dot Technologies
Dec. 6 16:40-18:00 Snow Hall A
Chair: Chien-chung Lin (National Taiwan University)
Co-Chair: Kai Wang (Southern University of Science and Technology)
| MEET3-1
16:40 |
Invited Narrow-Band Phosphors for Next Generation MiniLED and MicroLED Displays *James Murphy1, Derrick Brewer1, Samuel Camardello1, Shi Chen1, Zeying Chen1, Daniel DePuccio1, Felippe Pavinatto1, James Presley1, Anant Setlur1, Oltea Siclovan1, Justin Welch1, Aharon Yakimov1 1. GE Research (United States of America) |
| Here we describe recent advancements in narrow-band phosphors which are being implemented in next generation miniLED displays, and being considered for enabling full-color and wide color gamut microLED and luminescent color filter displays of the future due to their excellent optical performance and robust nature. | |
| MEET3-2
17:00 |
Invited All Inkjet-Printed EL-QD Display with Cd Free QD Inks *Masanobu Tanaka1, Jaekook Ha1, Yun Ku Jung1, Yeo-Geon Yoon1, Changhee Lee1 1. Samsung Display Co., Ltd. (Korea) |
| We demonstrate 12.4inch diagonal 182 ppi all inkjet-printed Cadmium-free Electroluminescent Quantum Dot (EL-QD) display. Here we have developed QD colloidal inks with optimized surface ligand, precise and stable Inkjet process and method to minimize intermixing between layers. | |
| MEET3-3
17:20 |
Invited Development of QLED for Next Generation Display *Zhuo Chen1, Zhuo Li1, Shaoyong Lu1, Xu Yuan1, Di Zhang1, Yang Gao1, Youqin Zhu1, Wenhui Dang1, Xiaoyuan Zhang1, Dong Li1, Yanzhao Li1 1. BOE Technology Group Company Limited (China) |
| Quantum dot light emitting diodes (QLED) are one of the most competitive technologies for next generation display, because of some unique advantages such as tunable emission with sizes, narrow emission, high stability, etc. In this paper, we will introduce the development of QLED, including inkjet printing and quantum dot photolithography in BOE Technology Group. | |
| MEET3-4
17:40 |
Invited Highly Stable Solution Processed Blue Quantum Dot Light Emitting Diodes for Display Applications *Congcong Cao1, Zhiwen Nie1, Likuan Zhou1, Yiran Yan1, Wenjun Hou1, Weiran Cao1 1. TCL Corporate Research (China) |
| To enhance the efficiency and stability of quantum dot light-emitting diodes (QLEDs), we meticulously adjusted the energy levels, charge balance, adjacent interfaces, and electronic leakage mitigation. The refined blue QLED demonstrated a T95 lifetime exceeding 80 hours at 1000 nits and achieved a peak EQE of 18.7%. |
MEET4: Emerging Quantum Dots and Nanotechnologies (2)
Special Topic of Interest on Quantum Dot Technologies
Dec. 7 9:00-10:20 Snow Hall A
Chair: George Fern (Brunel University London)
Co-Chair: Jang Hyuk Kwon (Kyung Hee University)
| MEET4-1
9:00 |
Invited Catastrophic Failure in Quantum Dots Light-Emitting Diodes: a Morphology Study Jingrui Ma1, Xiangwei Qu1, *Xiao Wei Sun1 1. Southern University of Science and Technology (China) |
| Understanding the failure mechanisms of quantum dot light-emitting diodes is crucial for their applications. In this study, morphological analysis of catastrophically failed devices reveals distinctive volcanic-like characteristics. These features stem from the detachment and disruption of the device's structure, encompassing the organic functional layer and metal electrode. This phenomenon is believed to be initiated by the synergistic effects of oxygen, moisture, and electrical current. | |
| MEET4-2
9:20 |
Invited Device Analysis and Large ZnSe Nanocrystals for Blue QLED *Haizheng Zhong1 1. Beijing Institute of Technology (China) |
| The operational stability of blue quantum dot light emitting diode (QLED) has been one of the most important obstacles to initialize the industrialization. Recently, we developed large ZnSe nanocrystals as alternative materials and demonstrate a machine learning assisted methodology to illustrate the operational stability of blue QLEDs by analyzing the measurements. | |
| MEET4-3
9:40 |
Invited High Performance of Quantum Dot Light-Emitting Diodes Using Enhanced Device Structure and Integration Method *Jeonghun Kwak1, Geun Woo Baek1, Taesoo Lee1, Minhyung Lee1 1. Seoul National University (Korea) |
| To improve the performance of quantum dot-based light-emitting diodes (QLEDs), we systematically investigated the effects of various factors, which are (i) QLED integration with the driving device in the backplane, (ii) light extraction of top-emitting QLEDs, and (iii) the positive aging phenomenon in the QLEDs. | |
| MEET4-4L
10:00 |
Effect the A Site Mixture to Emission Wavelength of Lead Halide Perovskite Quantum Dot *Ryota Sato1, Satoshi Asakura2, Motofumi Kashiwagi3, Takayuki Chiba1, Akito Masuhara1 1. Yamagata University (Japan), 2. ISE CHEMICALS Corp. (Japan), 3. ZEON Corp. (Japan) |
| ABX3 type lead halide perovskite quantum dot (PeQDs) has attracted attention due to its excellent optical properties. Herein, we discussed the effect of the A site cation to emission wavelength of PeQD. As a result, we successfully control the emission wavelength in the several nano meter order and maintain it. |
MEET5: Emerging Quantum Dots and Nanotechnologies (3)
Special Topic of Interest on Quantum Dot Technologies
Dec. 7 10:50-12:10 Snow Hall A
Chair: Kai Wang (Southern University of Science and Technology)
Co-Chair: Chien-chung Lin (National Taiwan University)
| MEET5-1
10:50 |
Invited Progress in Quantum Dots: Color Conversion Advancements and Future Applications in Display and Imaging Sensing Technology *Hsueh-Shih Chen1 1. National Tsing Hua University (Taiwan) |
| Quantum dots (QDs), a cutting-edge class of nanomaterials, have dramatically transformed the landscape of display and imaging sensing technology. This presentation aims to share the latest developments in the use of QDs as wavelength conversion materials. We further aim to explore the potential of these advancements within the domain of image sensing. The endeavour is to cast a spotlight on the ongoing innovations, providing an ... | |
| MEET5-2
11:10 |
Invited Electroluminescent Display Technology with Quantum Dot Pixel Patterns Enabled by Click Chemistry and Photocleavable DNA *Shruti Jayaprakash Saiji1, Manuel A Triana1,2, Nayan P Agarwal4, Ashwin Gopinath3,4, Raymond Lanzafame2, Yajie Dong1,2 1. University of Central Florida (United States of America), 2. QLEDcures (United States of America), 3. California Institute of Technology (United States of America), 4. Massachusetts Institute of Technology (United States of America) |
| We demonstrate the feasibility of making quantum dot light-emitting diodes (QD-LEDs) by a DNA-assisted transfer printing method, using click chemistry and photocleavable DNA. These transfer printed QD-LEDs were validated by comparing their performance with that of different control devices. | |
| MEET5-3
11:30 |
Invited Exciton Dynamics in Quantum-Dot Light-Emitting Diodes *Yizheng Jin1 1. Zhejiang University (China) |
| Here we review our activities associated with QLEDs, including exciton-generation mechanisms, material chemistry of charge-transporting layers and device engineering | |
| MEET5-4L
11:50 |
Preparation of Perovskite Highly Luminescent Organometal Halide Perovskite Quantum Dots under Ambient Conditions *Taisei Kimura1, Satoshi Asakura2, Motofumi Kashiwagi3, Akito Masuhara1 1. Yamagata University (Japan), 2. Ise Chemicals Corp. (Japan), 3. ZEON Corp. (Japan) |
| Perovskite quantum dots (PeQDs) are fascinating light sources with excellent optical properties. The synthesis process of this material is key to realizing its application devices. In this work, we propose novel synthetic methods that are advantageous for the mass synthesis of PeQDs and effectively overcome the challenges of conventional methods. |
MEET6: Emerging Quantum Dots and Nanotechnologies (4)
Special Topic of Interest on Quantum Dot Technologies
Dec. 7 13:30-14:30 Snow Hall A
Chair: Hsueh-Shih Chen (National Tsing Hua University)
Co-Chair: Jeonghun Kwak (Seoul National University)
| MEET6-1
13:30 |
Invited Full Color Quantum Dot Light Emitting Diode via Meta-Cavity *Kai Wang1, Taikang Ye1 1. Southern University of Science and Technology (China) |
| In this work, meta-cavity is proposed to provide a new patterning method for full color QLEDs fabrication with the powerful light manipulation capability of meta-cavity. Pure RGB color emission QLEDs can be obtained with a maximum Purcell factor of 46. | |
| MEET6-2
13:50 |
Invited Recent Progress in Colloidal Quantum Dot Based Color Conversion Layers *Chien-Chung Lin1,2, Kai-Ling Liang2, Wei-Hung Kuo2, Han-Yu Chao1, Guan-Ying Lee3, Yen-Hsiang Fang2 1. National Taiwan University (Taiwan), 2. Industrial Technology Research Institute (Taiwan), 3. National Yang Ming Chiao Tung University (Taiwan) |
| In this talk, we will review our latest development for color conversion layers based on colloidal quantum dots (CQDs). By using the quantum dot photoresist and directly dispensed quantum dot patterns, new types of color conversion layer can be made with great conversion efficiency. The smallest pixel that can be demonstrated is 2 um in this study. | |
| MEET6-3
14:10 |
Flexible Backlight and Quantum Dot Film for Photo-Dynamic Therapy Chung-Jen Ou1, *Ching-Nan Chuang1, Yen-Ni Lin1, Shih-Yuan Liu1, Wen-Chun Wang1 1. Coretronic Corp. (Taiwan) |
| Display-based QD materials are utilized in this study to create a tunable wavelength QD film for chronic wound care. Changing the device for different wavelength demands is necessary due to the fixed wavelengths of current PDT sources. Custom LED and biocompatible QD film are integrated to demonstrate feasible tunable wavelength functionality for diverse PDT. |
MEET7: Micro/NanoDisplays and Nanotechnology Application (1)
Special Topic of Interest on Micro/Mini LEDs
Dec. 7 15:20-16:40 Snow Hall A
Chair: Makarem Hussein (LuxNour Technologies, Inc.)
Co-Chair: Zhaojun Liu (Southern University of Science and Technology)
| MEET7-1
15:20 |
Invited Ferroelectric Oxide TFTs on PI Substrate for Stretchable Electronics *Jin Jang1, Samiran Roy1, Chan Ju Park1, Junmi Lee1, Hunbang Lee1 1. Kyung Hee University (Korea) |
| We review the issues on stretchable active-matrix (AM) electronics which is a next-generation technology that breaks away from electronics on flat and curved screens. The stretchable display has the ability to emit light on any surface, allowing for new possibilities in display design and functionality. We review the implementation of stretchable electronics based on oxide TFT electronics on PI substrate. | |
| MEET7-2
15:40 |
Invited NanoLEDs for Augmented Reality Applications *Seth Coe-Sullivan1, Matthew Stevenson1, Binh Huy Le2, David Laleyan2 1. NS Nanotech, Inc. (United States of America), 2. NS Nanotech Canada, Inc. (Canada) |
| Nanowire LEDs have progressed to being the most efficient LEDs ever made as extremely small lateral sizes. This paper will summarize our recent results nanoLED commercialization. | |
| MEET7-3
16:00 |
Invited Short Range Optical Communication with GaN-on-Si MicroLED and MicroPD Matrices *Patrick Le Maitre1, Sultan El Badaoui1,2, Anthony Cibié1, Julia Simon1, Fabian Rol1, Nicolas Michit1, Bastien Miralles1, Clément Ballot1, Bernard Aventurier1, Paolo De Martino1 1. CEA-LETI (France), 2. University Grenoble Alpes (France) |
| (In)GaN micro LEDs have reached a high degree of maturity thanks to their development in the field of lighting. Their robustness and high efficiency make them a candidate to realize high brightness and high-resolution micro-displays. New application is emerging today: massively parallel and energy efficient short range communication with high datarate density. | |
| MEET7-4
16:20 |
Invited Metrology and Inspection Case Studies for AR Waveguides *John C Robinson1 1. KLA Corp. (United States of America) |
| Optical see-through (OST) augmented reality (AR) glasses offer significant promise for consumers; however, key technologies require further development including micro-displays and waveguide combiners. We will discuss metrology and inspection case studies geared towards the development required for surface relief grating (SRG) AR waveguides to meet stringent consumer requirements. |
MEET8: Micro/NanoDisplays and Nanotechnology Application (2)
Special Topic of Interest on Micro/Mini LEDs
Dec. 7 17:10-18:10 Snow Hall A
Chair: Robert Visser (Applied Materials, Inc.)
Co-Chair: Kyu Chang Park (Kyung Hee University)
| MEET8-1
17:10 |
Invited Application of Design for Manufacture, Assembly and Yield Methodology to Achieve Production-Worthy Massive Transfer Equipment for micro-LED Displays *Makarem A Hussein1 1. LuxNour Technologies, Inc. (United States of America) |
| We applied the principles of design for manufacture, assembly and yield to develop production-worthy, massive parallel transfer equipment, featuring an electromagnetic pattern-sensitive head (PSH) stamp that offers production-worthy, high fidelity massive transfer with minimal Micro-LED customization. The scalability of the PSH makes it fit for various display applications. | |
| MEET8-2
17:30 |
Invited Exploring the Frontiers of Micro-LED Technologies and Visible Light Communication *Yu-Heng Hong1, Wen-Chien Miao1,2, Fu-He Hsiao1,2, Wei-Ta Huang1,2, Tzu-Yi Lee2, Chun-Liang Lin2, Daisuke Iida3, Ray-Hua Horng2, Hyeyoung Ahn2, Chi-Wai Chow2, Kazuhiro Ohkawa3, Hao-Chung Kuo1,2 1. Hon Hai Precision Industry Co., Ltd. (Taiwan), 2. National Yang Ming Chiao Tung University (Taiwan), 3. King Abdullah University of Science and Technology (Saudi Arabia) |
| Our recent studies have been dedicated to the advancement of InGaN-based micro-light-emitting diodes (micro-LEDs) for high-speed visible light communication (VLC) applications. This encompasses yellow-green micro-LEDs featuring an embedded nanoporous distributed Bragg reflector (NP-DBR), as well as high-efficiency red InGaN micro-LEDs. | |
| MEET8-3
17:50 |
Invited High-Brightness High-PPI Full-Color Micro-LED Displays for AR/XR Applications Yonghong Lin1, Yanzhen Yin1, Zhaoyong Liu1, Chunxiao Li1, Ke Zhang2, *Zhaojun Liu1 1. Southern University of Science and Technology (China), 2. Shenzhen SiTan Technology (China) |
| Micro-LED is good candidate of next generation of displays for high brightness, high PPI, and small form factor applications because of its solid materials - wide bandgap semiconductors and active-matrix programming scheme. This paper will report the high PPI (10000 PPI) Micro-LED micro displays and the prototype of light engine for AR/XR glasses. |
MEET9: Micro/NanoDisplays and Nanotechnology Application (3)
Special Topic of Interest on Micro/Mini LEDs
Dec. 8 9:00-10:20 Snow Hall A
Chair: Ivan-Christophe Robin (ALEDIA)
Co-Chair: Soo-Yeon Lee (Seoul National University)
| MEET9-1
9:00 |
Invited Large-Area Electronics: History and Potentials *Reza Chaji1 1. VueReal (Canada) |
| This article delves into the exciting realm of microLED displays for smartphone applications and spotlights VueReal's groundbreaking MicroSolid printing technology as a viable solution to address the associated challenges. | |
| MEET9-2
9:20 |
Invited MicroLED Display Applications and Technology Roadmap *Ying-Tsang (Falcon) Liu1, Yun-Li Li1 1. PlayNitride Inc. (Taiwan) |
| MicroLED display is an emerging technology with high brightness, high contrast, and wide color gamut. This technology can be used for transparent, seamless tiling, and AR glasses. Based on our proprietary PixeLED display, PixeLED Matrix, µ-PixeLED, and SMAR·Tech technologies, we could define the roadmap of MicroLED technology development. | |
| MEET9-3
9:40 |
Invited Commercializing MicroLED Technology with High-throughput EL Inspection for microLED Wafers *David Lewis1 1. InZiv (Israel) |
| InZiv CEO David Lewis will explain the challenges in yield that the microLED industry currently faces, and how InZiv's fast Electroluminescent (EL) inspection is a critical enabling technology for the mass-production of microLED displays. | |
| MEET9-4
10:00 |
Invited Progress and Remaining Challenges for MicroLED Volume Manufacturing. *Eric H Virey1, Raphael Mermet-Lyaudoz 1, Zine Bouhamri1 1. Yole Intelligence (France) |
| Various companies are investing massively to set up the manufacturing infrastructures and foster full ecosystems and supply chains to prepare volume production of microLED displays for consumer applications. However, problems remain that could further delay the long-expected transition of microLED from the lab to the fab. |
MEET10: Micro/NanoDisplays and Nanotechnology Application (4)
Special Topic of Interest on Micro/Mini LEDs
Dec. 8 10:50-12:10 Snow Hall A
Chair: Kyu Chang Park (Kyung Hee University)
Co-Chair: Jeonghun Kwak (Seoul National University)
| MEET10-1
10:50 |
Invited Single Chip RGB Micro-LEDs Paves the Way to Ultra Fine Pitch Displays *Ivan-Christophe Robin1, Pierre Tchoulfian1, Eric Butaud1, Philippe Gilet1 1. ALEDIA SAS (France) |
| One of the microLED direct view display major challenges is to find ways of drastically dropping the cost, for instance, by reducing the microLED size, simplifying the assembly process and improving the assembly yield. In this paper, we present our GaN-on-Si nanowire (NW) LED technology made on standard 8” Si wafers, scalable to 12” wafers and its use for the development of RGB chips for fine pitch ... | |
| MEET10-2
11:10 |
Invited Oxide TFT Pixel Circuits and Various Operation Methods for PWM MicroLED Displays Kyeong-Soo Kang1, *Soo-Yeon Lee1 1. Seoul National University (Korea) |
| In this paper, pulse width modulation driving micro light-emitting diode pixel circuit using oxide TFTs, and its operations in simultaneous and progressive emission are introduced. In addition, various operation methods, the SWEEP signal generation method based on linear charging of the capacitor and inverter-based PWM driving, are suggested and discussed. | |
| MEET10-3
11:30 |
Invited Oxide Thin-Film Transistors toward Monolithic 3-D Integration for CMOS IC and Micro-LED Display Applications *Na Xiao1, Saravanan Yuvaraja1, Zhiyuan Liu1, Xiaohang Li1 1. King Abdullah University of Science and Technology (Saudi Arabia) |
| In this work, we demonstrated high-mobility (μFE ∼100 cm2/V·s) indium oxide (In2O3) thin-film transistors (TFTs) with aluminum oxide (Al2O3) as passivation layer (PVL) using radio frequency (RF) magnetron sputtering. These high performance passivated In2O3 TFTs exhibit great prospects for realizing monolithic 3D-integration for CMOS IC ... | |
| MEET10-4L
11:50 |
Invited Advanced Epitaxy for Vertical Stack R/G/B Micro-LED Pixel Fabrication *Young Joon Hong1 1. Sejong University (Korea) |
| We present the fabrication of high-density vertical R/G/B micro-LED architectures using remote and van der Waals epitaxy. This method allows easy mechanical delamination followed by stacking epi-layers to be exquisitely architected by photolithography. This signifies a promising solution for precise LED alignment in ultra-high-resolution displays, such as AR and XR. |
MEETp1: Micro/NanoDisplays: Novel Materials, Components and Process Technologies
Dec. 7 9:20-10:40 Exhibition Hall B
| MEETp1-1 | Effect of Comb-Shaped Electrodes on the Electric Field Distribution in Inorganic EL Devices *Taketo Sato1, Yuzuki Tsuruta1, Keigo Warashina1, Shuichi Sato1 1. Tokyo Denki University (Japan) |
| This study designs, fabricates, and evaluates AC-dispersive inorganic electroluminescent (EL) and planar electrode-type EL devices. The devices utilized a copper- and chlorine-doped zinc sulfide (ZnS:Cu,Cl) luminescent layer and a comb-shaped electrode structure. The influences of the electrode material conductivity and transparency on the luminescence characteristics and brightness were systematically investigated. | |
| MEETp1-2 | Electrochemical Performance of Nanosheet-like Structured Nickel-Cobalt Oxide Thin Films *Kodai Numata1, Kyung Ho Kim1 1. Kitami Institute of Technology (Japan) |
| Nickel-cobalt (Ni-Co) oxide thin films were prepared using the wet-chemical method with various growth times and their morphological and electrochemical properties were investigated. The thin films composed of the interconnected nanosheet-like structures were uniformly distributed on the surface. Electrochemical durability of the Ni-Co oxide was enhanced by increasing growth times. | |
| MEETp1-3 | Facile Preparation of Sphere-like Structured Copper Oxide by Simple Solution Process *Keisuke Washo1, Kodai Numata1, Kyung Ho Kim1 1. Kitami Institute of Technology (Japan) |
| Copper oxide (CuO) was prepared by a simple solution process, producing sphere-like structures composed of sublevel rod-like nanoparticles. Growth of sphere-like structures was promoted by hexamethylenetetramine (HMT). Color of CuO prepared with HMT was black, and the average transmittance was ∼0% in the range of 200-1100 nm. | |
| MEETp1-4 | Enhancing the Stability and Performance of Coplanar InGaSnO Thin-Film Transistors by N2O Annealing *Byeonggwan Kim1, Md. Hasnat Rabbi1, Myeonggi Jeong1, Jin Jang1 1. Kyung Hee University (Korea) |
| We report a method to improve the performance of coplanar amorphous InGaSnO thin-film transistors by N2O post annealing at 380 oC. This annealing leads to improved electrical properties and stability. N2O post annealing leads to hysteresis free transfer curve and stable TFT characteristics with enhanced field-effect mobility from 8.13 to 37.60 cm2/Vs. | |
| MEETp1-5 | 2 µm Channel Length InGaSnO Thin-Film Transistor Using Spray Pyrolysis Process *Myeonggi Jeong1, Heonbang Lee1, Byeonggwan Kim1, Jin Jang1 1. Kyung Hee University (Korea) |
| We fabricated indium-gallium-tin-oxide (IGTO) thin-film transistors (TFTs) using spray pyrolysis on glass substrates. The IGTO TFT exhibited a high field-effect mobility of 25.9 cm2/Vs and showed good stability with a Vth shift of 0.4V under 1-hour PBTS conditions. Solution-processed IGTO TFTs are promising and have the potential to replace current TFTs in the near future. |
Workshop on Display Electronic Systems
| Dec. 6 | 14:50-16:10 | Room 301 B | DES1 | Deep Learning Systems |
| Dec. 6 | 16:40-18:00 | Room 301 B | DES2 | Driving Circuits |
| Dec. 7 | 17:10-18:30 | Room 302 B | DES3 | High Quality Display Systems |
| Dec. 8 | 13:30-14:30 | Room 302 B | DES4 | High Quality Display Systems 2 |
| Dec. 6 | 13:20-14:40 | Exhibition Hall B | DESp1 | Display Electronic Systems |
DES1: Deep Learning Systems
Special Topic of Interest on Artificial Intelligence and Smart Society
Dec. 6 14:50-16:10 Room 301 B
Chair: Haruhiko Okumura (Toshiba)
Co-Chair: Seishi Takamura (Hosei University)
| DES1-1
14:50 |
Lensless Driver Monitor System with Deep Learning *Tzu-Yuan Huang1, Chieh-En Lee1, Jia-Lun Wu1, Chung-Hao Tien1 1. National Yang Ming Chiao Tung University (Taiwan) |
| In order to mitigate the probability of accidents caused by distracted driving, we proposed a lensless driver monitor system that utilized deep learning model to ascertain the state of driver. The proposed system can protect the divers' privacy and achieve 96.95% accuracy, 97.17% sensitivity and 96.88% specificity on testing data. | |
| DES1-2
15:10 |
Research and Development of the Subpixel Rendering Algorithms for MicroLED Display *Yi Jia Li1, Jun Ying Lin1, Yu Hung Huang1, Chieh En Lee1, Chung Hao Tien1 1. National Yang Ming Chiao Tung University (Taiwan) |
| A novel subpixel rendering algorithm for micro-LED panel was proposed. With interpolated kernel of pixel layout and minimization of virtual and target image, we designed a linear transformation that can render high-resolution images through low-resolution panels and still maintain high image quality. The concept was proven by different merits. | |
| DES1-3L
15:30 |
Crack detection and Wooden Artifacts Preservation System Based on Random Forest Classifier and WGAN-GP Network *YA CHUN CHOU1, Chung Wen Hung1 1. National Yunlin University of Science and Technology (Taiwan) |
| Defect detection with Machine learning algorithm is adopted to identify cracks on antiquities in this paper. Additionally, the WGAN-GP network is also adopted to generate defect samples for improving the results of machine learning. The experimental results show that the system is particularly effective, which can reach 0.95 for accuracy. | |
| DES1-4L
15:50 |
Augmented Reality AI Co-Driver: Impact on Drivers Perceived Experience and Safety *Vassilis Charissis1 1. Edinburgh Napier University (UK) |
| This project investigates the use of an AI codriver that could support the driver's decision-making process. The information is presented through AR HUD and audio. The evaluation by 20 users in a VR driving simulator presented both encouraging outcomes and potential issues of the driver's perceived experience and safety. |
DES2: Driving Circuits
Special Topic of Interest on Micro/Mini LEDs
Dec. 6 16:40-18:00 Room 301 B
Chair: Chih-Wen Lu (National Tsing Hua University)
| DES2-1
16:40 |
Highly Stable Dual Gate a-InGaZnO Thin Film Transistor with Top Gate to Drain Offset for AC Gate Pulse Stress *Sunaina Priyadarshi1, Abidur Rahaman1, Sabiqun Nahar1, Jin Jang1 1. Kyung Hee University (Korea) |
| The AC gate pulse stress has been performed on the top gate to drain offset (LTG(Off)) dual gate (DG) a-IGZO TFT. It showed less threshold voltage-shift compared with the conventional DG TFT under pulse voltage stress of 0V to +30V at rising/falling time of 1- and 0.1-µs for 86.6 ks. | |
| DES2-2
17:00 |
Adaptive Frequency Driving Scan Driver for Low Power Display based on a-InGaZnO TFTs *Jinho Moon1, Hyunwoo Kim1, Yongchan Kim1, Hojin Lee1 1. Soongsil University (Korea) |
| In this paper, a scan driver combined with logic circuit using amorphous indium-gallium-zinc-oxide (a-InGaZnO) thin-film transistors (TFTs) is proposed. Logic circuit masks the output signal from the scan driver in order to control the driving frequency. Proposed frequency adaptive scan driver is expected to reduce power consumption depending on the display contents. | |
| DES2-3
17:20 |
High-Stable Gate Driver Circuit for Emission of AMOLED Displays *Jia-Han Yang1, Cheng-Han Ke1, Jui-Hung Chang1, Chi-Yuan Chan1, Po-Cheng Lai2, Chih-Lung Lin1 1. National Cheng Kung University (Taiwan), 2. AUO Corporation (Taiwan) |
| This article presents a novel emission gate driver circuit utilizing LTPS TFT technology, effectively tackling the tail pulse and insufficient stabilization time. Therefore, the proposed gate driver circuit can generate stable output signal for use in AMOLED displays. | |
| DES2-4L
17:40 |
Invited Oxide TFTs Integrated Gate Driver for Progressive Emission PWM μLED Display *Yuxuan Zhu1, Zhibang Song1, Xin Zheng1, Congwei Liao1, Shengdong Zhang1 1. Peking University (China) |
| A compact gate driver of oxide thin-film transistors (TFTs) is proposed for Micro-Light Emitting diodes (μLEDs) display with progressive emission pulse-width modulation (PWM), which reuses shift register part and features line-by-line gate scanning (G[n]) and emission control signals (EM[n]) to address switching- and emission-transistors in the μLED pixel. Thus the emission time of μLED is increased by 60% at a refresh rate of 120 Hz, ... |
DES3: High Quality Display Systems
Dec. 7 17:10-18:30 Room 302 B
Chair: Haruhiko Okumura (Toshiba)
Co-Chair: Reiji Hattori (Kyushu University)
| DES3-1
17:10 |
Invited Real-Time Computer-Generated Integral Imaging Display with Computational Vision Correction *Zong Qin1, Yunfan Cheng1, Yuqing Qiu1, Bo-Ru Yang1 1. Sun Yat-Sen University (China) |
| We propose a real-time computer-generated integral imaging (CGII) 3D display by revealing CGII has a similar signal processing flow with 2D displays. A millisecond-level frame runtime is achieved on an entry-level laptop. And the 3D display supports computational vision correction for various refractive errors, including high-order aberrations. | |
| DES3-2
17:30 |
Invited Development of 8K Laparoscopic Surgery System with Real-Time Telementoring and Analysis of its Effectiveness *Takayuki Ito1, Yukihide Kanemitsu2, Konosuke Moritani2, Hiroshi Shimamoto1, Yasuaki Kanatsugu1, Jun'ichi Yamazaki1, Jun'ichi Tachino1, Katsuhito Kameda1 1. NHK Foundation Inc. (Japan), 2. National Cancer Center Hospital (Japan) |
| This paper describes an 8K laparoscopic surgery system with real-time telementoring. It provides live 8K video of a laparoscopic surgery via a communication network to an experienced doctor, who returns instructions to less-experienced doctors operating on-site. We give an outline of the system and describe the results of an evaluation. | |
| DES3-3
17:50 |
Invited Displays are Inherently 3dB Worse Than the Real Thing *Seishi Takamura1 1. Hosei University (Japan) |
| The latest imaging technologies have successfully diminished two of the three significant camera noises (dark current noise and readout noise). However, optical shot noise still exists, which is inevitable by nature. This paper shows that even an ideal imaging system yields 3dB worse display quality than the real thing. | |
| DES3-4
18:10 |
Invited The Current Status and Issues of VR Devices as Wearable Display Devices *Masayuki Kozuka1, Yoshiichiro Kashiwagi1 1. Panasonic Corporation (Japan) |
| VR devices as wearable display, are attracting attention in the recent metaverse boom. Basic architecture of VR was established 30 years ago, and it has been booming several times, but not popularized yet. We study the current state of VR and challenges of dissemination |
DES4: High Quality Display Systems 2
Dec. 8 13:30-14:30 Room 302 B
Chair: Haruhiko Okumura (Toshiba)
Co-Chair: Reiji Hattori (Kyushu University)
| DES4-1L
13:30 |
CNN-based Subpixel Rendering Technique with Additional Pixel Arrangement Information Yun Jang Pyun1, *Garam Kim1, Hyoungsik Nam1 1. Kyung Hee University (Korea) |
| We present a subpixel rendering technique based on convolutional neural network (CNN), using additional pixel arrangement information. The proposed subpixel rendering network, SPRNN, provides apparently high resolution down-sampled image from the input image and pixel arrangement information. Experimental results show that the proposed SPRNN outperforms existing techniques. | |
| DES4-2L
13:50 |
MiniLED for Backlight Units: Applications, Ecosystem and Market Forecasts *Raphaël Mermet-Lyaudoz1, Eric Virey1, Zine Bouhamri1 1. Yole Intelligence (France) |
| As a self-emissive technology and characterized by very thin form factor and theoretical infinite contrast level, OLED displays are considered as premium by the consumers. However, LCD is playing a hidden card from its hand with MiniLED to boost its contrast while keeping the advantage of inorganic such as high brightness and reliability. | |
| DES4-3L
14:10 |
Depletion-Mode a-IGZO TFT Pixel Circuit Compensating for Capacitance Deviation and Threshold Voltage Shift *Hyunwoo Kim1, Jinho Moon1, Yongchan Kim1, Hojin Lee1 1. Soongsil University (Korea) |
| In this paper, we propose a novel pixel circuit using source follower scheme method compensating for threshold voltage (VTH) shifts of driving TFT (DR TFT) and storage capacitance deviations based on amorphous indium-gallium-zinc-oxide (a-IGZO) thin-film transistors (TFTs). The proposed pixel circuit is composed of six TFTs and two capacitors. Simulation results confirmed that, when the VTH of the driving ... |
DESp1: Display Electronic Systems
Dec. 6 13:20-14:40 Exhibition Hall B
| DESp1-1 | A Novel Pixel Driving Circuit for the Optimal Power Efficiency in Micro LED Display *Lamei Luo1,2, Jhongciao Ke2, Daobing Hu2, Shi Tang2, Yanrui Lin1,2 1. Peking University (China), 2. TCL China Star Optoelectronics Technology Co., Ltd (China) |
| A novel pixel driving circuit was proposed for the micro-LED display. The emission time of micro-LED was decreased to improve the LED efficiency operating in the high driving current. Additionally, the internal compensation section can eliminate the threshold voltage differences of 0-3V of the driving TFT. In this paper, the operation principle and simulation results will be illustrated to demonstrate the performance of the proposed ... | |
| DESp1-2 | Development of a Digital Service Expert System for Poultry Production Management *Kuang-Wen Hsieh1, Fu-Pang Shih1 1. National Chung Hsing University (Taiwan) |
| To save manpower and improve disease prevention, a digital service system was proposed for monitoring the internal information of poultry houses and implementing automated monitoring of chicken health using machine learning. Operators can access services such as environmental prediction notifications, feeding management alerts, industry information, and online consultations through a mobile app and chatbot. The environmental prediction provides a maximum error of ±2°C and an ... | |
| DESp1-3L | Reducing the thickness of ToF sensors and improving performance using metalens *Jeong Do Young1, Young-Gyun Kim1, Kwan-Young Han1 1. Dankook University (Korea) |
| Time of Flight (ToF) sensors play a key role in optical distance measurement. However, a current ToF sensor technology is difficult to manufacture and requires thick optic lenses. In this study, we explore ways to reduce the size of ToF sensors and simplify optical systems by using metalens technology. |
Workshop on Flexible Electronics
| Dec. 6 | 16:40-18:00 | Room 302 A | FLX1 | Flexible Oxide TFT |
| Dec. 7 | 9:00-10:20 | Room 302 A | FLX2 | Flexible Organic Devices |
| Dec. 7 | 10:50-12:10 | Room 302 A | FLX3 | Advanced Technologies for Flexible and Stretchable Displays |
| Dec. 8 | 9:00-10:20 | Room 302 B | FLX4 | Flexible Sensors and Devices |
| Dec. 8 | 10:50-12:10 | Room 302 B | FLX5 | Advanced Materials and Evaluation Method for Flexible Devices |
| Dec. 6 | 15:10-16:30 | Exhibition Hall B | FLXp1 | Devices and Materials for Flexible Electronics |
FLX1: Flexible Oxide TFT
Dec. 6 16:40-18:00 Room 302 A
Chair: Yukiharu Uraoka (Nara Institute of Science and Technology)
Co-Chair: Keiichi Akamatsu (FUJIFILM Corporation)
| FLX1-1
16:40 |
Invited Atmospheric Pressure Spatial Atomic Layer Deposition for Flexible Oxide Semiconductor Thin Film Transistors Kwang Su Yoo1, Chi-Hoon Lee1, Dong-Gyu Kim1, Won-Bum Lee1, *Jin-Seong Park1 1. Hanyang University (Korea) |
| This talk will introduce the atmospheric pressure spatial atomic layer deposition with high throughput/yield for In2O3 and InZnO Thin Film Transistors. The device shows excellent performance characteristics, including a field-effect mobility of 69.79 cm2/V·s, a threshold voltage of -0.06 ± 0.22 V, and a subthreshold swing of 0.16 V/decade. | |
| FLX1-2
17:00 |
Invited Natively Flexible Smart Systems *Julio Cesar Costa1, Emre Ozer1, Feras Alkhalil1, Richard Price1 1. Pragmatic Semiconductor (UK) |
| Natively Flexible Smart Systems (NFSS) allow for ultra-thin functionality to be added to wearable, conformal large-area sensing applications, dramatically improving both the form factor and cost of the final system. Here, we discuss the trends towards NFSS and showcase examples of enabling NFSS using Pragmatic's technology. | |
| FLX1-3
17:20 |
High-Performance Solution Process Amorphous In0.5Ga0.5O Coplanar Thin Film Transistor for Flexible Display Backplanes *Md. Hasnat Rabbi1, Arqum Ali1, Chanju Park1, Jinbaek Bae1, Jin Jang1 1. Kyung Hee University (Korea) |
| High-quality amorphous In0.5Ga0.5O thin films are deposited using spray pyrolysis on a polyimide substrate at ∼330°C. By achieving a thickness of 30 nm, mobility over 36 cm2V-1s-1 is obtained. A ring oscillator with an oscillation frequency of 2.32 MHz further demonstrates the potential for flexible display backplanes. | |
| FLX1-4
17:40 |
Characterization of a-IGZO TFT-based Operational Amplifier and Comparator for High-Speed Analog-to-Digital Converter on Flexible Substrate *Sara Hong1, Aris Siskos2,3, Jung-Hoon Chun1, Wim Dehaene3, Yong-Sang Kim1, Kris Myny2,3, Nikolaos Papadopoulos2 1. Sungkyunkwan University (Korea), 2. imec (Belgium), 3. KU Leuven (Belgium) |
| In this work, a characterization of an operational amplifier (Op-Amp) and a latch comparator based on amorphous indium gallium zinc oxide (a-IGZO) thin-film transistors (TFTs) used for an analog-to-digital converter (ADC), is reported. Statistical analysis is performed to investigate the uniformity of the circuits' offset and the DC gain of the Op-Amp. The Op-Amps presented at least 40 dB DC gain and about 70 mV input offset, ... |
FLX2: Flexible Organic Devices
Dec. 7 9:00-10:20 Room 302 A
Chair: Takashi Nagase (Osaka Metropolitan University)
Co-Chair: Mitsuru Nakata (NHK Science &Technology Research Laboratories)
| FLX2-1
9:00 |
Invited Organic Antiambipolar Transistors: Carrier-Transport Mechanism and Application to Unique Logic Circuits *Ryoma Hayakawa1, Yutaka Wakayama1 1. National Institute for Materials Science (NIMS) (Japan) |
| We developed organic antiambipolar transistors featuring a p-n junction in the channel layer, which exhibits negative differential transconductance (NDT). We first explore the origin of NDT, followed by an introduction to its applications such as multivalued and ternary logic-in-memory circuits. | |
| FLX2-2
9:20 |
Invited Floating Film Transfer: A Facile and Cost-Effective Approach Towards Uniform Large Area Oriented Thin Films for Organic Electronic Devices *Shyam S Pandey1 1. Kyushu Institute of Technology (Japan) |
| Floating-film transfer method (FTM) providing not only large-area uniform thin films in a very cost-effective way but also imparts orientation in fabricated thin films. Our recent results on the utilization of such oriented thin films of organic semiconducting polymers for the fabrication of high-performance organic electronic devices will be discussed. | |
| FLX2-3
9:40 |
Invited Printable Flexible Organic Photovoltaic by R2R Process *Hikaru Hayakawa1 1. MORESCO (Japan) |
| We are developing OPV (Organic photovoltaic) by R2R (Roll to Roll) process. It is a process that can be applied to large areas under atmospheric conditions, and it is also possible to add design by using a laser. A transparent conductive film is used for the substrate. Therefore, flexible, transparent solar cells can be manufactured. Also, we have developed a new way to use ... | |
| FLX2-4L
10:00 |
Optoelectronic Synaptic Characteristics of Organic Transistor Memories with Organic Semiconductor Floating Gates *Kazuyoshi Morikawa1, Shusei Hattori1, Naoyuki Nishida1, Takashi Kobayashi1, Hiroyoshi Naito1, Takashi Nagase1 1. Osaka Metropolitan University (Japan) |
| We report the synaptic characteristics of poly(3-hexylthiophene)-based OFET memories with organic semiconductor floating gates composed of TIPS-pentacene. Under red light, the output current due to the storage of photogenerated electrons shows light-intensity dependent synaptic characteristics as a result of carrier generation at the organic semiconductor floating gates. |
FLX3: Advanced Technologies for Flexible and Stretchable Displays
Special Topic of Interest on Micro/Mini LEDs
Dec. 7 10:50-12:10 Room 302 A
Chair: Mitsuru Nakata (NHK Science &Technology Research Laboratories)
Co-Chair: Manabu Ito (TOPPAN INC.)
| FLX3-1
10:50 |
Invited Wrinkle Structure and Kirigami Structure for Stretchable Light-Emitting Devices *Atsushi Takei1, Yasuyuki Kusaka1, Kazunori Kuribara1, Shusuke Kanazawa1, Yusuke Komazaki1, Manabu Yoshida1 1. Advanced Industrial Science and Technology (Japan) |
| Stretchability are essential functions for electronic devices in a new era. Especially, in the domains of healthcare, energy harvesting, and artificial intelligence, electronic devices attachable onto non-planer surfaces are demanded. For the fabrication methods of making stretchable devices, wrinkle and kirigami structures are presented in this report. | |
| FLX3-2
11:10 |
Scalable Active-Matrix Flexible mini-LED Displays with Organic Single-Crystal TFTs *Jun Takeya1,2,3,4, Tatsuyuki Makita2,3,4, Junto Tsurumi2,3,4, Mina Tanizawa1,3 1. Organo-Circuit Inc. (Japan), 2. P- Crystal Inc. (Japan), 3. SFiDA (Japan), 4. The University of Tokyo (Japan) |
| We present a scalable flexible active-matrix mini-LED display, which consists of bezelless 3-mm pitch 30 cm x 30 cm independently operating modules. The backplane is based on high-performance organic single-crystal TFTs laminated on screen-printed large-area plastic substrates. The devices are best suited to the application for large-area signages. | |
| FLX3-3L
11:30 |
Invited Development of Highly Stretchable 3-axis Deformable LED Displays *Masashi Miyakawa1, Hiroshi Tsuji1, Tatsuya Takei1, Toshihiro Yamamoto2, Yoshihide Fujisaki1, Mitsuru Nakata1 1. NHK Science & Technology Research Laboratories (Japan), 2. NHK Foundation (Japan) |
| Stretchable deformable displays are promising technologies for introducing various display styles and expanding applications of existing displays. We present highly stretchable 3-axis deformable LED displays prepared using mini- or micro-LEDs. The developed stretchable display can be deformed from plane to hemispherical shapes with up to 40% stretchability. | |
| FLX3-4L
11:50 |
Flexible Bezel-less Micro-LED Display Driven from Substrate Back Side Using Through-plastic Vias *Hiroshi Tsuji1, Tatsuya Takei1, Masashi Miyakawa1, Toshihiro Yamamoto2, Genichi Motomura1, Yoshihide Fujisaki1, Mitsuru Nakata1 1. NHK (Japan), 2. NHK Foundation (Japan) |
| Flexible bezel-less micro-LED displays are developed on polyimide film substrates using through-plastic vias (TPVs). Mask misalignment in the TPV formation process is reduced by accounting for substrate shrinkage. The developed displays provide clear moving images with video signals input from the substrate back side through the TPVs. |
FLX4: Flexible Sensors and Devices
Dec. 8 9:00-10:20 Room 302 B
Chair: Tadahiro Furukawa (Yamagata University)
Co-Chair: Hajime Hirata (Toray Engineering)
| FLX4-1
9:00 |
Invited Multimodal Flexible Sensor Systems *Kuniharu Takei1 1. Hokkaido University (Japan) |
| Flexible sensors are of great interest in the application of IoT including wearable devices due to conformal covering over any objects. In addition, sensor integration allows to monitor multimodal information simultaneously. This study aims to develop multimodal flexible sensor system using multiple sensor integration and machine learning. | |
| FLX4-2
9:20 |
Invited AC-driven Soft Human-Machine Interface Sensing Displays: Materials and Devices *Cheolmin Park1 1. Yonsei University (Korea) |
| This study reviews recent advances in human-interactive sensing displays (HISDs) for facilitated human-machine interfaces. A variety of device architectures and materials designs are presented for high performance HISDs. Guideline for future developments of HISDs is given, including molecular-level materials and emerging combination of HISDs with artificial intelligence, and novel sensing displays suitable for sensing and visualization of human extrasensory information. | |
| FLX4-3
9:40 |
Invited Chip on a Fiber Toward the E-Textile Computing Platform *Tae-Wook Kim1 1. Jeonbuk National University (Korea) |
| In this talk, we present an integrated electronic fiber platform by fabricating electronic devices onto a one-dimensional microfiber substrate. Electronic components such as transistors, inverters, ring oscillators, and thermocouples are integrated together onto the outer surface of a fiber substrate with precise semiconductor and electrode patterns. | |
| FLX4-4L
10:00 |
AMOLED Super Slim Border Display Technology *Dan dan Zhou1, Shou kun Wang1, Min Zhang1, Huan huan Zhang1, Xiang Liu1, Jun feng Li2, Ru bo Xing2 1. Yungu (Gu'an) Technology Co., Ltd (China), 2. Kunshan Govisionox Optolectronics Co., Ltd (China) |
| With the bezel of AMOLED display becoming more and more narrow, borderless display can be considered as the ultimate bezel form. Bending the active area in display screen (AA bending for short) is one technique used for to achieve borderless display effect. For AA bending, the folding radius (R) needs to be less than 1mm, which ensure module thickness remains within reasonable range. This paper ... |
FLX5: Advanced Materials and Evaluation Method for Flexible Devices
Dec. 8 10:50-12:10 Room 302 B
Chair: Manabu Ito (TOPPAN INC.)
Co-Chair: Toshimasa Eguchi (Sumitomo Bakelite)
| FLX5-1
10:50 |
Invited Patternable Perovskite Nanocrystals for Color Conversion in Next Generation Displays *Bernard Wenger1, Nobuya Sakai1, Ruiari Baker1, Maria Pervez1, Enrico Angioni1, Joseph Taylor1, Tomasz Augustynowicz1, Akanksha Singh1, Victor Zhang1, Sanger Hsu1, Hywel Hopkin1, Valerie Berryman-Bousquet1 1. Helio Display Materials (UK) |
| Perovskites are ideal color conversion materials for in-pixel color conversion, which will enable emerging display architectures such as microLED or QD-OLED. For patterning, both inkjet printing and photolithography can be used. Depending on the display resolution either method may be selected. We demonstrate IJP inks and photoresists compatible with standard manufacturing methods. | |
| FLX5-2
11:10 |
Improvement of Foldable Polarizer Reliability by Optimizing TOE Process *Bo Yuan1, Xing Yue Ma2, Ying Shen2, Qian Xiang Wang3, Yang Jiao Li1 1. Kunshan New Flat Panel Display Technology Centre Co., Ltd (China), 2. Hefei Visionox Technology Co., Ltd (China), 3. Kunshan Govisionox Optoelectronics Co., Ltd (China) |
| Different foldable modules were fabricated and foldable polarizer's performance was evaluated. During RA test, chemical reactions occurred between I3-/I5- ions from polarizer and NH4+ ions from touch panel on encapsulation (TOE), resulting in discoloration of the foldable polarizer. To enhance foldable polarizer's reliability, NH3: SiH4 gas flow rate was adjusted. | |
| FLX5-3L
11:30 |
Invited Objective Evaluation of the Fabric Handle *Mari Inoue1 1. Kobe University (Japan) |
| Around 1980, Kawabata et al. developed a method to objectively evaluate human sensibility in terms of fabric handle. In this paper, I introduce the technical system that deals with this engineering problem of mapping sensory information to physical values, which was developed in the field of textiles, and present an example of its application to smart textiles. | |
| FLX5-4L
11:50 |
Assessing Film Substrate Scratch Resistance in Rolling Applications *Seung Gyun Kim1, Se Yong Choi1, Seung Jae Moon1, Jong Mo Lee1, Ki Yong Lee2, Byung Seong Bae1 1. Hoseo University (Korea), 2. FlexiGo Inc. (Korea) |
| This study provides a comprehensive evaluation of film substrates following the rolling process. The investigation focuses on two substrate materials, polyimide film, and thermoplastic polyurethane. Through the manipulation of rolling cycle counts, we conducted a series of scratch tests, followed by a comprehensive analysis of how rolling impacts scratch formation. |
FLXp1: Devices and Materials for Flexible Electronics
Dec. 6 15:10-16:30 Exhibition Hall B
| FLXp1-1 | Flexible InSnZnO Phototransistors for Deep Ultraviolet Applications *Delang Lin1, Jing Wang2, Rongsheng Chen2, Zhibo Sun2, Fion Sze Yan Yeung2, Hoi Sing Kwok2 1. South China University of Technology (China), 2. The Hong Kong University of Science and Technology (China) |
| This study presented a comprehensive investigation of flexible InSnZnO phototransistors for deep ultraviolet applications. The effects of the manufacturing process and device structure on the performance of InSnZnO phototransistors were analyzed. The findings contributed to enhancing the efficiency of metal oxide-based phototransistors, thus expanding their potential for diverse optoelectronic applications. | |
| FLXp1-2 | Stretchable Oxide TFTs on PI Island / PDMS Substrate *Junmi Lee1, Chanju Park1, Jin Jang1 1. Kyung Hee University (Korea) |
| Thin-film transistors (TFTs) on Polyimides (PI) / polydimethylsiloxane (PDMS) are commonly used in stretchable displays. PDMS was stretched up to 60%. The transfer and output characteristics were measured under relaxed and stretched state. Electrical parameters such as threshold voltage, field effect mobility, and subthreshold swing shows stable performance under stretching up to 60%. | |
| FLXp1-3 | Innovative Spontaneous Self-Healing Flexible Electrodes and Heaters using Polybutadiene-Based Urethane/Eutectic Gallium-Indium Composite *Khanh Duc Tran1, Jong-Woong Kim1 1. Sungkyunkwan University (Korea) |
| We propose the utilization of a composite matrix composed of Polybutadiene-Based Urethane (PBU) and Eutectic Gallium-Indium (EGaIn) to achieve enhanced electric and heat conductivity even under significant stretching levels. Furthermore, the samples exhibit a remarkable ability to self-heal, restoring their functionality after damage, thereby extending their operational capabilities. | |
| FLXp1-4L | Research on Mechanical Simulation of Flexible AMOLED Module Bottom Frame *Meiqiang Liang1, Chunxiao Gu1, Cuili Gai1, Hongjun Xie1, LIwei Ding1 1. Visionox Technology lnc. (China) |
| With the development of science, the frame of terminal flagship products has become an important research direction. In this paper, we use finite element analysis to simulate the whole bending process of bottom frame, which provides theoretical basis for fault analysis, stacking structure design and smaller radius design. | |
| FLXp1-5L | Effect of Mixing Ratio and AgNWs Diameter on the Electrical Property of AgNWs/SWCNTs Film *Chehung Wei1, Chuan-Chieh Chien1 1. Tatung University (Taiwan) |
| Different diameter of AgNWs were mixed with various contents of SWCNTs to reduce sheet resistance of AgNWs/SWCNTs films. It was observed that a small quantity of SWCNTs significantly enhanced the conductivity, particularly in the case of 40 nm diameter through the creation of a secondary electrical network. | |
| FLXp1-6L | Investigation of Surface Orientation on UV Reactive Mesogen-Doped Liquid Crystals *Daiki Fujii1, Yuki Enomoto1, Yuichi Ueno1, Yosei Shibata1, Munehiro Kimura1 1. Nagaoka University of Technology (Japan) |
| The slit coater method as an orientation printing method, whose advantage is that the orientation layer coating processing and the planar liquid crystal orientation control can be performed simultaneously, has been demonstrated previously. In this study, the reorientation to vertical orientation when UV light was exposed after slit coating is discussed. | |
| FLXp1-7L | Alignment-Controlling Sandwiched Spacers for Curvature-Fixed Liquid Crystal Displays *Tatsuya Kanda1, Masakazu Nakatani1, Hideo Fujikake1 1. Tohoku University (Japan) |
| We proposed an alignment-controlling sandwiched polymer spacer that works as a spacer between rigid curved substrates and controls alignment of liquid crystal without using alignment layers for curvature-fixed display. We fabricated the spacer using polysiloxane resin with a transfer method. The results show that the liquid crystal molecules are vertically oriented to the polymer side surface due to the polysiloxane surface. | |
| FLXp1-8L | Low-Voltage Driving of Inverted Organic Light-Emitting Diodes Utilizing Upconversion Process *Moeto Okuda1, Takayuki Kinoshita1, Yasuyuki Izawa1, Takashi Kobayashi1, Hiroyoshi Naito1, Takashi Nagase1 1. Osaka Metropolitan University (Japan) |
| We fabricated inverted OLEDs using vacuum-deposited rubrene emitter layers and solution-processed acceptor layers composed of naphthalenediimid-based n-type polymer semiconductors. The fabricated OLEDs enable low-voltage driving with a turn-on voltage (1.3 eV) smaller than the bandgap energy of rubrene (2.2 eV) by utilizing the upconversion process via triplet-triplet annihilation. |
Workshop on Touch Panels and Input Technologies
| Dec. 6 | 13:00-14:00 | Room 301 B | INP1 | Touch Panel and Smart Surface |
| Dec. 7 | 10:50-12:10 | Marine Hall | INP2/LCT5 | Biomedical Imaging and Its Possibility Using Liquid Crystal Technology |
| Dec. 7 | 13:30-14:30 | Marine Hall | INP3/LCT6 | 3D Information Input and Display Using Liquid Crystal Technology |
| Dec. 8 | 9:00-10:20 | Room 301 B | MVS3/INP4 | Input Technologies for Metaverse Systems |
| Dec. 8 | 10:50-11:50 | Room 301 B | INP5 | Haptics and AR/VR Interactive Technologies (1) |
| Dec. 8 | 13:30-14:30 | Room 301 B | INP6 | Haptics and AR/VR Interactive Technologies (2) |
| Dec. 6 | 15:10-16:30 | Exhibition Hall B | INPp1 | Interactive Technologies |
INP1: Touch Panel and Smart Surface
Special Topic of Interest on Automotive Displays
Dec. 6 13:00-14:00 Room 301 B
Chair: Kuniaki Yamazaki (Corning Japan)
Co-Chair: Takanori Morioka (Mitsubishi Elec.)
| INP1-1
13:00 |
Invited Versatile Applications of Silver Nanowire *Xiping Zeng1 1. ShenZhen Huake-Tek co., ltd (China) |
| Silver nanowires (AgNWs), it was widely assumed, to be the best material substitutes for indium tin oxide (ITO) in next-generation flexible, foldable, and bendable transparent conducting electrodes (TCEs) due to their very low sheet resistance, high transparency, more flexibility, and ease of processing. However, they need special process to deal with which is different with the process for ITO, that is why is hard to ... | |
| INP1-2
13:20 |
Invited Sharp Force Touch for On-Screen User Interface in LCD and Foldable OLED Display Application *Yasuhiro Sugita1, Takuma Yamamoto1, Takenori Maruyama1, Kazutoshi Kida1, Shinji Yamagishi1, Hiroshi Fukushima1, Mikihiro Noma1 1. Sharp Display Technology Corporation (Japan) |
| We describe ultra-high sensitive force sensor on flat display that can detect and differentiate between feather touch and press touch or tapping. The proposed unique sensor pattern design and pressure-sensitive material enables ultra-high force sensitivity, multi force detection (10 points). The minimum force that can be detected is 25g with cover film and 300g with thick cover glass. Furthermore, our force touch technology with button-shaped bumps ... | |
| INP1-3L
13:40 |
Invited In2visible Displays - An Evolution of the Automotive Cockpit *Keisuke Yamagishi1, Juergen Baethis2, Kai Hohmann2 1. Continental Automotive Japan K.K. (Japan), 2. Continental Automotive Technologies GmbH (Germany) |
| In2Visible Displays - An evolution of the automotive cockpit |
INP2/LCT5: Biomedical Imaging and Its Possibility Using Liquid Crystal Technology
Dec. 7 10:50-12:10 Marine Hall
Chair: Nobuyuki Hashimoto (Japan Women's Univ.)
Co-Chair: Hiroshi Haga (Tianma Japan)
| INP2/LCT5-1
10:50 |
Invited Liquid Crystal Devices for Controlling Laser Light and Advanced Multi-Photon Microscopy Imaging *Tomomi Nemoto1,2, Hirokazu Ishii1,2, Kohei Otomo1,2 1. National Institute of Natural Sciences (Japan), 2. National Institute for Physiological Sciences (Japan) |
| Two-photon excitation fluorescence microscopy is a robust technique for understanding physiological phenomena from the cellular to the tissue level, attributable to the nonlinear excitation process induced by near-infrared ultrashort laser light pulses. By taking advantage of liquid crystal devices, we have successfully improved the fluorescent signal and the spatial resolution. | |
| INP2/LCT5-2
11:30 |
Invited Current and Emerging Imaging Applications in Pathology: From Microscopy to Digital Pathology, Clinical Perspectives *Riuko Ohashi1 1. Niigata University (Japan) |
| Pathology is the study of the causes and consequences of disease or injury and those morphological, functional, and molecular changes. In clinical practice, pathologists diagnose macroscopic, microscopic, and molecular changes in diseases or injuries of patients, contributing to treatment decision-making and assessments of the efficacy or effectiveness of therapies, including surgery and drugs. In this talk, I will present an overview of the current imaging ... |
INP3/LCT6: 3D Information Input and Display Using Liquid Crystal Technology
Special Topic of Interest on AR/VR and Hyper Reality
Dec. 7 13:30-14:30 Marine Hall
Chair: Nobuyuki Hashimoto (Japan Women's Univ.)
Co-Chair: Kazunori Imoto (Toshiba)
| INP3/LCT6-1
13:30 |
Invited Incoherent Digital Holography Aiming to Capture Three-Dimensional Video *Tetsuhiko Muroi1, Teruyoshi Nobukawa1, Yutaro Katano1, Kei Hagiwara1 1. Japan Broadcasting Corporation (Japan) |
| Incoherent digital holography (IDH) enables the acquisition of holograms using incoherent light sources. To capture videos, it is necessary to simultaneously capture holograms with different phase shifts. In this paper, we present an approach to IDH that utilizes a spatially parallel phase-shifting method for the simultaneous capture of holograms. | |
| INP3/LCT6-2
13:50 |
Pixel-wise Phase-shifting Incoherent Digital Holography with a Liquid Crystal Lens *Teruyoshi Nobukawa1, Masahiro Usui1, Yutaro Katano1, Masahide Goto1, Kei Hagiwara1, Tetsuhiko Muroi1 1. Japan Broadcasting Corporation (Japan) |
| Pixel-wise phase-shifting incoherent digital holography with a liquid crystal lens is proposed and demonstrated. The system incorporates the linear birefringence property of the lens to introduce shear for self-interference. Proof-of-principle experiments confirm the 3D imaging capability of the prototype system under incoherent light. | |
| INP3/LCT6-3
14:10 |
Invited Realistic AR 3D Displays without AC Conflict *Yan Li1, Shuxin Liu1, Bo Wang1 1. Shanghai Jiao Tong University (China) |
| Virtual reality (VR) and augmented reality (AR) technologies are gaining ever-increasing attention. However, there is vergence-accommodation conflict problem for most VR or AR 3D displays, causing visual fatigue. We propose solutions to realize realistic AR 3D displays without AC conflict based on liquid crystal devices and metasurfaces. |
MVS3/INP4: Input Technologies for Metaverse Systems
Special Topic of Interest on AR/VR and Hyper Reality
Dec. 8 9:00-10:20 Room 301 B
Chair: Masaki Yasugi (Fukui Pref. Univ.)
Co-Chair: Makoto Sato (Tokyo Tech)
| MVS3/INP4-1
9:00 |
Invited Haptic Interaction Techniques for Dexterous Manipulation in Metaverses *Shoichi Hasegawa1, Yunxiu Xu1, Ayaka Fukasawa1, Riho Taniguchi1, Takumi Sato1 1. Tokyo Institute of Technology (Japan) |
| Users spend metaverses for a long time, and fingers manipulate real objects and act as gestures for conversation in the metaverse. VR controllers are a hindrance, and freehand tracking will be widespread. We propose a haptic interface for dexterously manipulating virtual objects in metaverses. | |
| MVS3/INP4-2
9:20 |
Invited Advancing Haptic Display Technology for Embodied Metaverse Experiences *Arata Horie1,2 1. Keio University (Japan), 2. commissure Inc. (Japan) |
| In this presentation, we will explore the research on haptic display within the metaverse, an expected growth area stemming from XR technology, and discuss its prospects. A haptic display is a device that presents tactile stimuli to users, with the aim of reproducing environmental perception in XR, and there is a growing diversity of methods for this purpose. In this talk, we will provide an ... | |
| MVS3/INP4-3
9:40 |
Invited Frame-Wise Action Recognition for Skeleton-Based Anomaly Detection *Hiroaki Tani1, Tomoyuki Shibata1 1. Toshiba Corporation (Japan) |
| We propose a novel method for recognizing human actions from a single frame. Our approach utilizes the “action-ness” obtained by a pretrained model, enabling effective training for frame-wise action recognition without additional data. We also introduce several anomaly detection applications utilizing our method. | |
| MVS3/INP4-4
10:00 |
Guiding Technology for Faster Work by Controlling the Presentation Speed of Hand Gesture Instruction in Augmented Reality *Yuya Ogi1, Takashi Numata1, Naohito Ikeda1 1. Hitachi.Ltd. (Japan) |
| To improve the work efficiency, we developed a guiding technology for faster work to control the presentation speed of augmented reality (AR) contents including hand gesture instruction. This technology improved the work efficiency by 1.4 times compared with the conventional work instruction. The failure rate was also reduced from 9.72 % to 1.39 %. |
INP5: Haptics and AR/VR Interactive Technologies (1)
Special Topic of Interest on AR/VR and Hyper Reality
Dec. 8 10:50-11:50 Room 301 B
Chair: Hiroshi Haga (Tianma Japan)
Co-Chair: Makoto Sato (Tokyo Tech)
| INP5-1
10:50 |
Invited A Novel Vibration Feedback Method Based on the Human Perceptual Intensity to Deliver Realistic Audiovisual Experiences *Masashi Konyo1 1. Tohoku University (Japan) |
| This paper introduces a novel vibration feedback method that uses low-frequency vibration to reproduce a sensory experience that is strictly sensory equivalent to the original high-frequency vibration experience. This paper reports the overview of the proposed method and an application of haptic-enhanced video using iPhone and Core Haptics API for realistic audiovisual experiences. | |
| INP5-2
11:10 |
Invited Evolution of Information Displays through Tactile Sensation in Human Interfaces: A Historic Review *Yuichiro Kume1,2 1. The University of Electro-Communications (Japan), 2. Hirayoshi Shoten Research (Japan) |
| Since around 1970, electronic-controllable tactile displays have been investigated in human interfaces. A number of tactile stimulation methods have been developed, and information transmission techniques and the applications have been proposed. The further innovations on tactile displays are expected. In this paper, tactile displays are historically reviewed for future developments. | |
| INP5-3
11:30 |
Invited Human Body Connection through Sensorimotor Control Sharing *Yoshihiro Tanaka1,2 1. Nagoya Institute of Technology (Japan), 2. Inamori Research Institute for Science (Japan) |
| Haptics and telerobotics can integrate humans' individual sense and motor control to exceed individual capabilities. We have developed human-human/robot collaboration system by sharing tactile sensations and integrating the motion into a single avatar robot. In this paper, those studies will be introduced and discuss the effects and potential applications. |
INP6: Haptics and AR/VR Interactive Technologies (2)
Special Topic of Interest on AR/VR and Hyper Reality
Dec. 8 13:30-14:30 Room 301 B
Chair: Masashi Konyo (Tohoku Univ.)
Co-Chair: Yoshihiro Tanaka (Nagoya Inst. of Tech.)
| INP6-1
13:30 |
Invited Can Human Remove the Barrier of “Motion-sickness” in order to Gain Access to New Spaces? *Shigehito Tanahashi1 1. Niigata University (Japan) |
| This presentation clarifies the mechanism of VR sickness, which is one of the obstacles to the diffusion of VR technology and to gain trust. This presentation consists of research to achieve as follows: (1) suppressing the sickness caused by the oscillation of the avatar during the first-person viewpoint (2) clarifying the mechanism of sickness with the aim of recovering as quickly as possible after the symptoms of ... | |
| INP6-2
13:50 |
Invited Transforming Experience in Real World with Dynamic Projection Mapping *Yoshihiro Watanabe1 1. Tokyo Institute of Technology (Japan) |
| Dynamic projection mapping is a concept of manipulating the appearance of a moving target. This paper presents the latest work to enhance the experience with the projection. I also introduce the example application scenarios to show how dynamic projection mapping can seamlessly transform the experience in the real world. | |
| INP6-3L
14:10 |
Invited Ultrasonic Haptic Displays *Matthieu Rupin1, Soledad Commisso1, Matthieu Guedra1 1. hap2U (France) |
| In this paper, we describe the salient ingredients needed for a touchscreen to be turned into a haptic display based on ultrasonic vibrations. A particular focus will be made on two key elements of the system: the actuators and the bonding layers in the displays. |
INPp1: Interactive Technologies
Special Topic of Interest on Artificial Intelligence and Smart Society
Dec. 6 15:10-16:30 Exhibition Hall B
| INPp1-1 | Respiratory Disease Identification of Chicken Voiceprint Based on Audio Processing and Machine Learning Technology *Zhu Jun Qian1, Chiu Yu Ting1, Huang Li Yun1, Hsieh Kuang Wen1, Hsieh Ming Kun1, Tsai Yao Chuan1 1. National Chung Hsing University (Taiwan) |
| This study develops a device using audio processing and machine learning to identify and monitor respiratory diseases in poultry, improving automation in health monitoring, enhancing production efficiency, reducing disease transmission risk, lowering technical barriers, and optimizing farmers' management. Achieves a 91.6% accuracy in chicken respiratory disease vocalization recognition. | |
| INPp1-2 | Registrable Lensless Face Recognition System based on Deep Learning *Si-Wei Chen1, Ya-Ti Chang Lee1, Chieh-En Lee1, Chung-Hao Tien1 1. National Yang Ming Chiao Tung University (Taiwan) |
| We proposed a lensless recognition system associated with deep learning paradigm. An amplitude-modulated mask is applied as an element for optical encryption. Then, ResNet-50 architecture was trained to learn a well-structured representation space for the visual recognition task. Over 90% sensitivity and 98% specificity with 10 classes proved the concept. | |
| INPp1-3L | Advanced Touch Sensor with Low-temperature Poly-Si Oxide Thin-film Transistors *Heonbang Lee1, Jinbaek Bae1, Junyeong Kim1, Myeonggi Jeong1, Jin Jang 1. Kyunghee University (Korea) |
| We present a novel touch sensor circuit that uses low-temperature poly-Si oxide thin-film transistors, utilizing a pixel-embedded CMOS inverter to amplify the output signal. The circuit demonstrates comparable performance, exhibiting a 4.8V difference between untouched and touched states. |
The 14th International Conference on Three Dimensional Systems and Applications
| Dec. 6 | 13:00-14:20 | Room 301 A | 3DSA1/3D1 | Holography (1) |
| Dec. 6 | 14:50-16:10 | Room 301 A | 3D2/3DSA2 | Human Factor on Realistic Display |
| Dec. 6 | 16:40-17:40 | Room 301 A | 3DSA3/3D3 | Light Field/Multiview/Stereo/Aerial (1) |
| Dec. 7 | 9:00-10:20 | Room 301 A | 3D4/3DSA4 | Light Field/Multiview/Stereo/Aerial (2) |
| Dec. 7 | 10:50-12:10 | Room 301 A | 3DSA5/3D5 | Light Field/Multiview/Stereo/Aerial (3) |
| Dec. 7 | 13:30-14:50 | Room 301 A | 3D6/3DSA6 | Holography (2) |
| Dec. 8 | 9:00-10:20 | Room 301 A | 3DSA7/3D7 | Emerging Technologies for 3D/Hyper-realistic Display |
| Dec. 8 | 10:50-12:10 | Room 301 A | 3D8/3DSA8 | Holography (3) |
| Dec. 8 | 13:30-14:50 | Room 301 A | MVS4/3DSA9/3D9 | 3D Technologies for Metaverse Systems |
| Dec. 7 | 15:40-17:00 | Exhibition Hall B | 3DSAp1 | Emerging technologies for 3D/Hyper-realistic Display (1) |
| Dec. 7 | 17:30-18:50 | Exhibition Hall B | 3DSAp2 | Emerging technologies for 3D/Hyper-realistic Display (2) |
3DSA1/3D1: Holography (1)
Dec. 6 13:00-14:20 Room 301 A
Chair: Kyoji Matsushima (Kansai University)
Co-Chair: Tomohiro Yendo (Nagaoka Univ. of Tech.)
| 3DSA1/3D1-1
13:00 |
Invited A Novel Transparent 3D Display Based on Integration of Passive and Active Optical Elements *Hoang Yan Lin Lin1, Chia-Yuan Chang1 1. National Taiwan University (Taiwan) |
| We want to create a floating 3D image with integral imaging based 3D light field display and with an optical transparent display. We develop the Computer Generated Elemental Image (CGEI) method to create an image with a different depths from a two-dimensional image and a depth map. We create a new weight function to increase the image qualities. Also, creating an optical transparent light-field display ... | |
| 3DSA1/3D1-2
13:20 |
Invited Holographic Image Reconstruction Using a Magneto-Optical Spatial Light Modulator with Its Pixel Pitch of 1 μm and its Layout of 10k × 5k *Ken-ichi Aoshima1, Nobuhiko Funabashi1, Ryo Higashida1, Mayumi Kawana1, Yuta Yamaguchi1, Kenji Machida1 1. Japan Broadcasting Corporation (Japan) |
| We have demonstrated successful holographic images reconstruction using a magneto-optical spatial light modulator (MO-SLM) which magnetization is controlled by current induced domain wall motion. The MO-SLM has the pixel pitch of one micron for horizontal direction showing large viewing zone angle of 30 degrees. | |
| 3DSA1/3D1-3
13:40 |
Invited Digitally Printed Holograms for Efficient Generation of Structured Light *Jackin Boaz Jessie1, Kenji Kinashi1, Naoto Tsutsumi1, Wataru Sakai1 1. Kyoto Institute of Technology (Japan) |
| Here we combine analog hologram recording material and digital hologram printing technique, for efficient generation of structured light beams. A set of 100 vortex beams were generated from a hologram of size 1mm x 1mm with high diffraction efficiency. This method can aid future optical communication and information processing applications. | |
| 3DSA1/3D1-4
14:00 |
Using Time Multiplexing with Spatial Multiplexing to Reduce Speckle for AR-HUD *Hung-I Chang1, Hoang-Yan Lin1, Yen-Jung Chen1 1. National Taiwan University (Taiwan) |
| The AR-HUD system based on LCoS and using laser as a light source has a speckle issue severely affects the image quality.This paper proposes using time and spatial multiplexing, a configuration effective method to reduce the speckle problem in the experiment. |
3D2/3DSA2: Human Factor on Realistic Display
Dec. 6 14:50-16:10 Room 301 A
Chair: Chien-Yu Chen (National Taiwan University of Science and Technology)
Co-Chair: Takashi Yamazoe (Seikei University)
| 3D2/3DSA2-1
14:50 |
Relationship between Field of View Size and Head Motion in Eyepiece Displays *Sumio YANO1,2, Shuichi Ojima3 1. Shimane University (Japan), 2. RITECS Inc. (Japan), 3. Sojo University (Japan) |
| We examined the relationship between the field of view and head motion on an eyepiece display and found that head motion is narrower in a wide field of view than in a narrow field of view, while velocity depends on the frequency component of the image. | |
| 3D2/3DSA2-2
15:10 |
HEVC Subjective and Objective Image Quality Assessment Considering Cross Reality Based on 360 Degrees Camera *Norifumi Kawabata1 1. Kanazawa Gakuin University (Japan) |
| In this paper, we generated 360 degrees camera images by using RICOH THETA Z1. Next, we processed of H.265/HEVC for generated images, and estimated fundamentally how the coded image quality is controlled by changing of image region or coding parameter, finally, we considered application for eXtended reality using Xperia View. | |
| 3D2/3DSA2-3
15:30 |
Effects of Motion Parallax Smoothness and Head Moving Range on Reduction of The Cardboard Effect *Kosuke Takahashi1, Haruki Mizushina1, Shiro Suyama2, Kenji Yamamoto1 1. Tokushima University (Japan), 2. Utsunomiya University (Japan) |
| Smoother motion parallax and wider head movements contribute to reduce the cardboard effect in binocular stereoscopic display. The cardboard effect, a perceptual distortion in stereoscopic displays that makes objects appear flat, can be reduced by adding motion parallax. | |
| 3D2/3DSA2-4
15:50 |
Multi-view DFD (Depth-Fused 3D) Rendering with Linear Blending *Yuto Morishita1, Munekazu Date2, Haruki Mizushina1, Shiro Suyama1, Kenji Yamamoto1 1. Tokushima University (Japan), 2. Tokushima Bunri University (Japan) |
| The usefulness of Multi-view DFD rendering with linear blending is demonstrated. A combination of Multi-view DFD rendering and linear blending was considered to reduce the number of cameras in stacked multi-view display. The depth of 3D images was evaluated at several camera-to-camera distance. |
3DSA3/3D3: Light Field/Multiview/Stereo/Aerial (1)
Special Topic of Interest on AR/VR and Hyper Reality
Dec. 6 16:40-17:40 Room 301 A
Chair: Hoang Yan Lin (National Taiwan University)
Co-Chair: Masaru Tsuchida (NTT)
| 3DSA3/3D3-1
16:40 |
Integral Imaging Using a Lens Array Composed of Fine Interleaved Fresnel Lenses *Hiroto Omori1, Hideki Kakeya1 1. University of Tsukuba (Japan) |
| This paper proposes integral imaging comprising fine interleaved elemental lenses, which consist of elemental prisms whose slope angle corresponds to two adjacent convex lenses. By using fine elemental lenses, parallax between adjacent elemental images becomes small and continuity of image increases even when the depth of image is large. | |
| 3DSA3/3D3-2
17:00 |
Improved Eye-Tracking Function by Combining Inertial Sensor Information for Integral 3D Display *Hisayuki Sasaki1, Masanori Kano1, Naoto Okaichi1, Hayato Watanabe1, Tomoyuki Mishina1 1. NHK (Japan) |
| When eye-tracking is compromised in integral 3D display owing to the deterioration of the lighting conditions of the observer's face, motion blur, or movement of the face outside the camera view, a discontinuous viewing zone is formed. Combining face image detection with inertial sensor information can lead to a robust eye-tracking function. | |
| 3DSA3/3D3-3
17:20 |
Depth Enhancement of Time Multiplexed Light Field Display by Multilayering Display Surface Using Two Lens Arrays *Tatsuya Shiratori1, Kengo Fujii1, Tomohiro Yendo1 1. Nagaoka University of Technology (Japan) |
| One of the problems with light field displays is that the resolution of the displayed object decreases with distance from the display surface. To solve this problem, we propose a multilayer display using two lens arrays and a high-speed projector. The resolution improvement is confirmed by simulation. |
3D4/3DSA4: Light Field/Multiview/Stereo/Aerial (2)
Special Topic of Interest on AR/VR and Hyper Reality
Dec. 7 9:00-10:20 Room 301 A
Chair: Toshiaki Fujii (Nagoya Univ.)
Co-Chair: Yongjun Lim (ETRI)
| 3D4/3DSA4-1
9:00 |
Invited VR Noh “GHOST IN THE SHELL” ~Immersive Style Stage Direction without HMD ! *Shutaro Oku1 1. The University of Tokyo (Japan) |
| Immersive style stage direction without HMD for VR Noh “GHOST IN THE SHELL” will be achieved by applying a holographic screen on the stage and implementing multi-layer projection, low-resolution effects and gaze guidance. This foundational technology will open up the next stage as a new metaverse interface. | |
| 3D4/3DSA4-2
9:20 |
Development of 3D Glasses Using Aspherical Phase Plates for Endoscopic Surgery *Kotomi Takatsu1, Yasushi Miyajima2, Kazutoshi Kato2, Yuki Kondo3, Hiroharu Kobayashi3, Yasuhiro Takaki1 1. Tokyo University of Agriculture and Technology (Japan), 2. Itoh Optical Industrial Co., Ltd. (Japan), 3. Seirei Hamamatsu General Hospital (Japan) |
| Three-dimensional (3D) glasses were developed for the 3D endoscopic surgeries using third-order aspherical phase plates to reduce visual fatigue. To assess their effectiveness, a subjective evaluation was conducted using a simulator sickness questionnaire in the hospital. The results of the evaluation conducted over four months are reported. | |
| 3D4/3DSA4-3
9:40 |
Pixel-Density Enhanced Integral Three-Dimensional Display by Time-Division Multiplexing of Two-Dimensional Image *Hayato Watanabe1, Naoto Okaichi1, Masanori Kano1, Hisayuki Sasaki1, Jun Arai1 1. NHK (Japan) |
| We propose a method for displaying three-dimensional (3D) images with high maximum pixel density by synthesizing a two-dimensional image with an integral 3D image using time-division multiplexing. We developed a prototype display system and verified its display performance through display experiments. | |
| 3D4/3DSA4-4
10:00 |
Development of Vertical Diffusive Reflection Screen with Background Transparency for AR 3D Display *Sei Sato1, Kengo Fujii1, Tomohiro Yendo1 1. Nagaoka University of Technology (Japan) |
| We propose an AR 3D display with multiple horizontal viewpoints. The background-transmitting part and the diffuse-reflecting part are alternately arranged on a screen to realize this display. The screen was engraved lines on a transparent board. The screen characteristics were also compared by changing the engraved line conditions. |
3DSA5/3D5: Light Field/Multiview/Stereo/Aerial (3)
Special Topic of Interest on AR/VR and Hyper Reality
Dec. 7 10:50-12:10 Room 301 A
Chair: Sumio Yano (Shimane Univ.)
Co-Chair: Keita Takahashi (Nagoya University)
| 3DSA5/3D5-1
10:50 |
Embossing Volume 3D Effect by Using DCRA Plate *Shi-Hwa Huang1, Chih-Hao Chuang2, Chien-Yu Chen1 1. National Taiwan University of Science and Technology, Taipei, Taiwan (Taiwan), 2. Feng Chia University (Taiwan) |
| Our research involves utilizing the DCRA to slice objects into multiple images, enabling us to display their volume. By leveraging the persistence of the visual effect in the human eye, we aim to achieve an embossed volumetric display. | |
| 3DSA5/3D5-2
11:10 |
Point Light Source Array Based Integral 3D Display Using Eye-Tracking and Time-Division Technologies *Naoto Okaichi1, Hayato Watanabe1, Masanori Kano1, Hisayuki Sasaki1, Jun Arai1 1. NHK (Japan) |
| This article proposes an integral three-dimensional (3D) display system based on a point light source array using eye-tracking and time-division technologies. The prototype system has wide viewing angles of 100.2° horizontally and 68.6° vertically with eye tracking and a time-division display that doubles the 3D resolution both horizontally and vertically. | |
| 3DSA5/3D5-3
11:30 |
Distortion Reduction of Transparent Display Perceived Beyond the Surface of the Display Using Small Mirror Array Screen *Ryosuke Kida1, Kengo Fujii1, Tomohiro Yendo1 1. Nagaoka University of Technology (Japan) |
| We propose an AR display oriented to applications such as store windows. We reduced the image distortion caused by moving the viewpoint, which was a problem with the method of projecting images onto a half-mirror array. | |
| 3DSA5/3D5-4
11:50 |
Reduction of Image Distortion for Vertically Shifted Viewpoints on Superimposed 3D Display Viewable from 360 Degrees *Yuto Inaba1, Kengo Fujii1, Tomohiro Yendo1 1. Nagaoka University of Technology (Japan) |
| In the previous superimposed 3D display viewable from 360 degrees, it has a problem that stereoscopic images are distorted by viewpoint shifts. In this paper, we propose a method to improve the distortion of stereoscopic images caused by vertical viewpoint shift by changing the mirror tilt of the previous system. |
3D6/3DSA6: Holography (2)
Dec. 7 13:30-14:50 Room 301 A
Chair: Boas Jessie Jackin (Kyoto Institute of Technologies)
Co-Chair: Ken-ichi Aoshima (NHK)
| 3D6/3DSA6-1
13:30 |
Invited Wavefront Aberration Introduced by DMDs *Jung-Young Son2, Tetiana Venkel3, Jung Kim2, Hyoung Lee1, Beom-Ryeol Lee1 1. ETRI (Korea), 2. Konyang University (Korea), 3. Chernivtsi University (Ukraine) |
| Wavefront aberrations introduced by DMDs of different pixel structures to the reconstructed images of holograms displayed on the DMDs are investigated with a Shack-Hartmann wavefront sensor. The aberration increases as the pixel size increases, and introduces distortions and blurring to the reconstructed image. This aberration can also result the reconstructed image of a point to be bigger for the DMD with larger pixel size than ... | |
| 3D6/3DSA6-2
13:50 |
Invited Depth-Varying AR HUD Display Method *Chien-Yu Chen1, Tzu-An Chou1, Chih-Hao Chuang2 1. National Taiwan University of Science and Technology (Taiwan), 2. Feng Chia University (Taiwan) |
| The utilization of CGH display technology in multi-depth head-up display (multi-depth HUD) for augmented reality (AR) is currently a prominent area of research. However, existing implementations often involve the use of multiple projection devices or spatial light modulators with complex optical mechanisms, such as Freeform Mirror, to achieve multi-depth projection in automotive HUDs. These approaches pose challenges in terms of system size and cost. Therefore, ... | |
| 3D6/3DSA6-3
14:10 |
Improvement of Image Quality of Wide-Angle Holographic Display Using a Non-Periodic Photon Sieve *Shunki Sasaki1, Yasuhiro Takaki1 1. Tokyo University of Agriculture and Technology (Japan) |
| This study improves the image quality of the reconstructed images generated through holographic techniques using a non-periodic photon sieve, which provides a wide viewing zone angle. We developed the optimization technique based on the Gerchberg-Saxton algorithm to calculate the phase distribution displayed on the phase-only spatial light modulator. | |
| 3D6/3DSA6-4
14:30 |
HOE Screen Generating Multiple Viewpoints for Transparent 3D Display *Nobuyuki Murakoshi1, Kengo Fujii1, Tomohiro Yendo1 1. Nagaoka University of Technology (Japan) |
| We propose a transparent 3D display with a wide field of view using fewer projectors by combining a unique HOE screen that focuses the projector image in multiple directions with face tracking. In this paper, we built a hologram printer to confirm the optical function of the proposed HOE screen. |
3DSA7/3D7: Emerging Technologies for 3D/Hyper-realistic Display
Dec. 8 9:00-10:20 Room 301 A
Chair: Hyoung Lee (ETRI)
Co-Chair: Takafumi Koike (Hosei Univ.)
| 3DSA7/3D7-1
9:00 |
Simulation and Verification of 1×13 Wavelength Selective Switch Using LCoS for 2D Light Splitting *You-Si Lin1, Yu-Chia Cheng1, Hoang-Yan Lin1 1. National Taiwan University (Taiwan) |
| We designed a 1×12 wavelength selective switch with a 2D fiber array, used Zemax simulation to optimize the optical element parameters, and used the iterative Fourier transform algorithm to design the optimal phase modulated LCoS-SLM. Finally, experiment is designed to verify the efficiency and crosstalk of the system. | |
| 3DSA7/3D7-2
9:20 |
Light Field Acquisition Using Shack-Hartmann Wavefront Sensor and Its Application to Holographic Stereogram *Koki Matsuoka1, Chihiro Tsutake1, Keita Takahashi1, Toshiaki Fujii1 1. Nagoya University (Japan) |
| We propose to use a Shack-Hartmann wavefront (SHW) sensor for acquiring a light field (LF) with high angular resolution, which is suitable for holographic stereogram. We present an end-to-end pipeline from LF capture to holographic display on real hardware. | |
| 3DSA7/3D7-3
9:40 |
Interactive Relit Realistic Paintings on a Digital Frame *Ying-Hsuan Lee1, Chih Yang1, Tzung-Han Lin1 1. National Taiwan University of Science and Technology (Taiwan) |
| An innovative 3D interactive digital framework was proposed. We rendered oil-paintings with PBR textures on anti-reflective screens to reproduce realistic lighting effects. After detecting the viewer's position, the content and re-rendered dynamically to fit the scenario which emphasizes texture details, brushstrokes and colors of artworks due to lighting directions. | |
| 3DSA7/3D7-4
10:00 |
Encoding of Stereo Images Using Bilateral Filters and Different Compression Ratio for Limited Communication Bandwidth *Naoto Nakayama1, Haruki Mizushina1, Kenji Yamamoto1 1. Tokushima University (Japan) |
| Stereo images should be highly compressed for limited communication bandwidth. In this experiment, we evaluated stereo images with different compression ratios on the left and right sides using a bilateral filter, and stereo images with the same compression ratio on the left and right sides. |
3D8/3DSA8: Holography (3)
Dec. 8 10:50-12:10 Room 301 A
Chair: Yasuhiro Takaki (Tokyo University of Agriculture and Technology)
Co-Chair: Hisayuki Sasaki (NHK)
| 3D8/3DSA8-1
10:50 |
Invited Expanding Space Bandwidth Product in Quantitative Phase Imaging by Comparing Transport of Intensity Equation with Fourier Ptychographic Microscopy *Yongjun Lim1, Kwan-Jung Oh1 1. Electronics and Telecommunications Research Institute (Korea) |
| Phase information given by transport of intensity equation and Fourier ptychographic microscopy are compared with each other adopting incoherent light sources, and the expansion of space bandwidth product in quantitative phase imaging based on the spectral domain analysis is to be provided. | |
| 3D8/3DSA8-2
11:10 |
Aperture Control for Increasing Hologram Signal Amplitude in Incoherent Digital Holography *Tetsuhiko Muroi1, Teruyoshi Nobukawa1, Yutaro Katano1, Kei Hagiwara1 1. NHK (Japan) |
| In incoherent digital holography (IDH), the hologram signal amplitude decreases as the object size relative to the image size increases. To address this issue, we implemented aperture control within the IDH optical configuration. This allowed us to increase the hologram signal amplitude and reduce random noise in the reconstructed image. | |
| 3D8/3DSA8-3
11:30 |
Holographic Phase Retrieval Based on PhaseMax *Tatsuki Wada1, Chihiro Tsutake1, Keita Takahashi1, Toshiaki Fujii1 1. Nagoya University (Japan) |
| We propose a method for generating phase-only holograms. Our method is inspired by an optimization-based phase retrieval method, referred to as PhaseMax. In contrast to conventional methods, our method always produces globally optimal phase-only holograms. We demonstrate through our optical experiments that visually-plausible images can be produced from our hologram. | |
| 3D8/3DSA8-4
11:50 |
Invited Calculation of Computer-Generated Hologram Over 100K Resolution Range for Realistic 3D Meta-Space Reproduction *Masahiro Yamaguchi1 1. Tokyo Institute of Technology (Japan) |
| This paper demonstrates the calculation of a computer-generated hologram that can reproduce deep and realistic 3D scenes in space, which is still or animated. The method, based on ray-wavefront conversion, enables hologram computation from the data rendered by a computer graphics technique or captured by a real camera. |
MVS4/3DSA9/3D9: 3D Technologies for Metaverse Systems
Special Topic of Interest on AR/VR and Hyper Reality
Dec. 8 13:30-14:50 Room 301 A
Chair: Yuzo Hisatake (Shizuoka University)
Co-Chair: Taesoo Kwon (Hanyang Univ.)
| MVS4/3DSA9/3D9-1
13:30 |
Invited Control of a Single-Rigid-Body Character in Various Environments *Taesoo Kwon1, Yoonsang Lee1 1. Hanyang University (Korea) |
| Expressing the full-body character as a single rigid body, we can obtain a control policy that can adapt to various unobserved environmental changes and controller transitions. We demonstrate the ability of the policy with environments such as running on uneven terrain or pushing a box, and transitions between learned policies. | |
| MVS4/3DSA9/3D9-2
13:50 |
Real-time MIV Player for Metaverse Service *Hong-Chang Shin1, Gwangsoon Lee1, Won-Sik Cheong1, Hyun-gon Choo1 1. Electronics and Telecommunications Research Institute (Korea) |
| The MPEG-I Visual group is currently working on standardization efforts related to 3DoF+ video generation technology with the aim of providing immersive video services under the name MPEG Immersive Video (MIV). Immersive video technology, which combines multiple camera footage to synthesize scenes in virtual space and reproduce lifelike videos, is closely related to reality-based metaverse services. In this paper, we introduce the core technology of ... | |
| MVS4/3DSA9/3D9-3
14:10 |
Head Motion-Based Accident Detection Model in Construction Site Using Simulation *Kisub Lee1, Minsu Kyeon1, Gaeun Noh1, Jong-Il Park1 1. Hanyang University (Korea) |
| This study presents an accident detection model using a head-mounted display (HMD) device to prevent casualties caused by falls and material collisions at construction sites. The model utilizes simulations to generate data on head movements during accident scenarios. By comparing this data with animation data that represents normal conditions, the model performs binary classification to identify whether a situation is hazardous or safe. This study ... | |
| MVS4/3DSA9/3D9-4
14:30 |
Ultra-Wide Field-of-View Display by Use of Aerial Stereoscopic Images Reconstructed Just Behind the Eyes *Hiroki Takatuska1, Munekazu Date2, Masaki Yasugi1,3, Shiro Suyama1, Hirotsugu Yamamoto1 1. Utsunomiya University (Japan), 2. Tokushima Bunri University (Japan), 3. Fukui Prefectural University (Japan) |
| When an observer's eye is placed before the aerial image, an ultra-wide field-of-view is realized because the image is reconstructed just behind the eye. However, negative binocular disparity is reproduced. We use stereoscopic display technique to reproduce positive binocular disparity on the aerial images that are reconstructed behind the observer. |
3DSAp1: Emerging technologies for 3D/Hyper-realistic Display (1)
Dec. 7 15:40-17:00 Exhibition Hall B
| 3DSAp1-1 | Performance Evaluation of Transmission System for Computer-Generated Holograms in Wired/Wireless Connections by Using Lossless Compression *Misato Onishi1, Kazuhiro Yamaguchi1, Yuji Sakamoto2 1. Suwa University of Science (Japan), 2. Hokkaido University (Japan) |
| In this study, a transmission system for Computer-Generated Hologram (CGH) was developed. In the transmission system, data of CGHs were streamed through network, and 3D objects were reconstructed by outputting the received data on SLM in electro holography. Quality of optically reconstructed objects and performance of the transmission system were evaluated. | |
| 3DSAp1-2 | Denisyuk-Type Wavefront Printer Developed for Printing Large-Scale Display CGVH *Yuki Takemura1, Hirohito Nishi1, Kyoji Matsushima1 1. Kansai University (Japan) |
| The latest status of development is presented in a novel type of wavefront printer called the Denisyuk-type wavefront printer. The introduced 4K high-definition SLM and improved optics facilitates fabrication of large-scale full-parallax CGVHs with a wide viewing angle. | |
| 3DSAp1-3 | Fast Hologram Generation Method for Holographic Video Display *Chun Chen1, Minseok Chae Chae1, Yoonchan Jeong1, Byoungho Lee1 1. Seoul National University (Korea) |
| We propose a fast hologram generation method for holographic video display. In our approach, we utilize the previous frame's hologram and employ a mask to separate the background and foreground optimization to accelerate the hologram generation process. | |
| 3DSAp1-4 | Evaluation on Usability of Aerial Display by Changing the Timing of Providing Multimodal Feedback *Yasunori Terao1, Haruki Mizushina1, Kenji Yamamoto1 1. Tokushima University (Japan) |
| We revealed optimal relationship between position of the multimodal feedback (visual, auditory, and tactile using vibration to the sole of foot) and position of the aerial image for operating the aerial display. We also revealed the correlation between usability of aerial display and perceived depth position of aerial image. | |
| 3DSAp1-5 | Increase in Size of Full-Color Stacked CGVH by Tiling Contact-Copy *Shunsuke Fujiki1, Hirohito Nishi1, Kyoji Matsushima1 1. Kansai University (Japan) |
| A novel technique is presented for increasing in the size of stacked CGVHs (computer-generated volume hologram) that reconstruct high-quality full-color full-parallax 3D images. A tiling technique is introduced to extend the size without increasing the output power of the laser used for contact-copy. | |
| 3DSAp1-6 | Real-Time 3D Video Communication System Using Stereo Video Capture and Autostereoscopic Display *Kyosuke Yanagida1, Takafumi Koike1,3, Goro Hamagishi2,3, Hideya Takahashi2,3 1. Hosei University (Japan), 2. Osaka Metropolitan University (Japan), 3. RealImage Inc. (Japan) |
| We have developed a high-quality real-time 3D video communication system with the simplest configuration of stereo cameras and an autostereoscopic 3D display. The effectiveness of the system as a video communication system was discussed by conducting 2D videoconferences with the system for multiple users. | |
| 3DSAp1-7 | Hollow Face Illusion Evoked Even by Binocular Vision of Aerial 3D Image *Takumi Watanabe1, Hiroki Takatsuka1, Shiro Suyama1, Hirotsugu Yamamoto1 1. Utsunomiya University (Japan) |
| We have confirmed that hollow face illusion can be easily evoked even at binocular vision of an aerial 3D image by using the AIRR (aerial imaging by retroreflection). The aerial image of the concave surface can be tracked as depending on the angle of observation. | |
| 3DSAp1-8 | Robust 3D Object Mesh Generation Based on NeRF with Image Brightness Equalization for Various Lighting Environments *Hyeongil Nam1, Gaeun Noh1, Minsu Kyeon1, Jong-Il Park1 1. Hanyang University (Korea) |
| We propose a method for 3D mesh generation using NeRF and brightness equalization. Addressing lighting variations, we apply equalization to rendered images and utilize shared MLP features for improved volumetric rendering. Quantitative and qualitative comparisons validate effectiveness. | |
| 3DSAp1-9 | Light Field Display Based on Monocular Stereo Vision *Song Fang1, Haofeng Zhang1, Tianhong Wang1, Jing Zhang1, Jiangbo Yao2, Xin Zhang2 1. Shenzhen China Star Optoelectronics Semiconductor Display Technology Co. Ltd (China), 2. TCL China Star Optoelectronics Display Technology Co. Ltd (China) |
| The existence of monocular stereo vision can effectively alleviate vergence-accommodation-conflict, at the same time, it can also enrich the stereoscopic information and improve the quality of 3D performance. On the basis of the binocular parallax depth clue, the accommodation depth clue can be used to see a more natural 3D display effect. The light field display proposed in this paper is based on monocular stereo ... | |
| 3DSAp1-10L | Evaluation of Simulated Image Quality for Wireless Transmission System of CGHs *Kazuhiro Yamaguchi1, Misato Onishi1, Yuji Sakamoto2 1. Suwa University of Science (Japan), 2. Hokkaido University (Japan) |
| In this paper, a system models of wireless transmission system for computer-generated holograms (CGHs) is constructed, and quality of light waves and reconstructed images considering transmission errors of CGHs are analyzed by using computer simulations. SNR of light waves, PSNR and SSIM of computational reconstructed images were measured and evaluated. | |
| 3DSAp1-11L | Diffraction Efficiency Analysis for a Large-Aperture Holographic Optical Element *Sungjin Lim1, Kyung-Il Joo1, Jung Hun Choo1, Seon Kyu Yoon1, Jin Su Lee2, Kwang-Hoon Lee1 1. Korea Photonics Technology Institute (Korea), 2. Electronics and Telecommunications Research Institute (Korea) |
| Holographic optical elements are next-generation optical components that can implement complex optical systems in a thin film. However, as the size and shape of HOEs become more diverse, there is no measurement methods that can precisely analyze the optical properties of HOEs. In this paper, we propose a precision measurement method to analyze the optical properties of HOEs. | |
| 3DSAp1-12L | A Method for Solving the Field of View Problem in Dihedral Corner Reflector Arrays *Tsai Cheng Hsun1, Chuang Chih Hao, Huang Shi Hwa1, Chen Chien Yu1 1. National Taiwan University of Science and Technology (Taiwan) |
| DCRA relies on the second reflection of light on two mutually perpendicular surfaces to form an image at the location of the image. Therefore, we added a right-angle structure to the DCRA square column structure to achieve the purpose of expanding the viewing angle. | |
| 3DSAp1-13L | A Study on the Effect of Total Variation Regularizer in Voxel Grid-based Radiance Field *Sangwoon Kwak1,2, Jun-Young Jeong1, Joonsoo Kim1, Gwangsoon Lee1, Won-Sik Cheong1, Hyon-Gon Choo1, Munchurl Kim2 1. Electronics and Telecommunications Research Institute (Korea), 2. Korea Advanced Institute of Science and Technology (Korea) |
| In this paper, we consider a voxel grid-based radiance field framework for representing 3D static scene. One of the representative frameworks, Plenoxels, utilizes a total variation regularizer to effectively remove artifacts by encouraging similarity of features between neighboring voxels. This term is combined with the existing reconstruction loss through a weighted sum, but finding a well-balanced weight parameter can be challenging. To address this issue, ... | |
| 3DSAp1-14L | Correlation Between XR Content Watching Time and Concentration/Stress According to Biometric Data Acquisition of XR Multimodal Devices Users Jong-Bae Lee1, HyungKi Son1, Beom-Ryeol Lee1, Wook-Ho Son1, *Hyoung Lee1 1. Electronics Telecommunications Research Institute (ETRI) (Korea) |
| In this study, we develop a novel multimodal device capable of collecting biometric data from viewers of XR content, including EEG signals, pupil size changes, eye blink signals, head movement data, and hand movement data. Using the various biometric data collected, correlations between concentration and stress factors and feature information are verified using statistical analysis methods. Finally, the correlation of concentration/stress according to the ... | |
| 3DSAp1-15L | Development of Virtual-Reality-Based Electromagnetism-Teaching Materials Incorporating Gamification *Shunya Nakatani1, Tomoyoshi Shimobaba1, Tomoyoshi Ito1, Atsushi Shiraki1 1. Chiba University (Japan) |
| This study presents the enhancement of learning outcomes by developing high school physics electromagnetic materials using virtual reality (VR) incorporated with gamification elements. Specifically, we conducted electromagnetic-induction experiments and developed materials that integrate gaming components such as sensory representations and scoreboards. | |
| 3DSAp1-16L | Partial Access using Group-based MPEG Immersive Video Coding Technology *Gwangsoon Lee1, Sangwoon Kwak1, Hong-chang Shin1, Bong Ho Lee1, Won-sik Cheong1 1. ETRI (Korea) |
| In this paper, we introduce a proof of concept for partially decoding and rendering the immersive video, which is compliant to MIV (MPEG Immersive Video) standard. Specifically, we propose an immersive video coding system that can split source views into groups according to sub-viewing zones. |
3DSAp2: Emerging technologies for 3D/Hyper-realistic Display (2)
Dec. 7 17:30-18:50 Exhibition Hall B
| 3DSAp2-1 | Double-Plane Image Reconstruction/Authentication Based on Double-Plane Phase Only Functions Located at Different Distances *Hsuan-Ting Chang1, Mao-Siang Jhao1 1. National Yunlin University of Science and Technology (Taiwan) |
| In this paper, we propose a method of using double-plane phase only functions (DPPOFs) and applying Fresnel diffraction transform to achieve double-plane image reconstruction/authentication. Based on the principle of optical Fresnel diffraction, we use the double phase retrieval algorithm to encode two target images at two different reconstruction planes into DPPOFs. The simulation results show that the two target images can be successfully reconstructed ... | |
| 3DSAp2-2 | Simplified Wide Viewing Angle Electronic Holography Using a Checkered Hologram Generated by a Lens Array *Soma Fujimori1, Tomoyoshi Ito1, Tomoyoshi Shimobaba1 1. Chiba University (Japan) |
| Electronic holography has the problem of a small viewing angle. We propose wide viewing angle electronic holography using a checkered hologram generated by a lens array. The proposed method has the advantages of simplicity of the optical system and robustness to misalignment. | |
| 3DSAp2-3 | Manifold Learning in the Hologram Domain: a Pipeline for Compressing and Reconstructing Complex Holograms *Juhyun Lee1, Yoonchan Jeong1, Byoungho Lee1 1. Seoul National University (Korea) |
| We introduce a pipeline for manifold learning in the hologram domain. A traditional autoencoder architecture is employed to compress and reconstruct complex holograms. The pipeline utilizes MNIST data and demonstrates consistent shape reconstruction. The latent vector representation of the hologram exhibits well-separated manifolds, successfully capturing similarities between numbers. | |
| 3DSAp2-4 | Increasing Vection Strength by Adding Optical Flow with Random Dots in the Peripheral Visual Field *Kosuke Nakanishi1, Haruki Mizushina1, Kenji Yamamoto1 1. Tokushima University (Japan) |
| In this paper, we demonstrated that vection strength and duration can be increased, and latency can be decreased by presenting a stimulus video on the HMD, which is added by alpha blending optical flow with random dot images on the peripheral visual field of a live-action video. | |
| 3DSAp2-5 | Lateral Viewing Zone of Depth-Fused 3D (DFD) Display by Use of Aerial Image in Front *Takahiro Omoto1, Shiro Suyama1, Hirotsugu Yamamoto1 1. Utsunomiya University (Japan) |
| We derive the theoretical formulae for the viewing zone of a Depth-fused 3D (DFD) display that consists of a flat-panel display in the back side and an aerial image in front. We have developed a DFD display with an aerial image and confirmed our analyses on the lateral viewing zone. | |
| 3DSAp2-6 | Occlusion-Aware SDFs with Inpainting for Hand-Object Reconstruction from a Single RGB Image *Gaeun Noh1, Hyeongil Nam1, Jong-Il Park1 1. Hanyang University (Korea) |
| Hand-Object Reconstruction research aims to understand and accurately reconstruct hand-object interaction, addressing challenges in diverse shape representation and occlusion. We introduce GAN-based inpainting on occluded regions in monocular RGB image, extracting features that model missing areas for precise surface prediction in the SDF Decoder, facilitating clear boundary distinction for detailed shape representation. | |
| 3DSAp2-7 | Voxel-Based 3D Object Reconstruction Using NeRF Robust Against Occlusion *Minsu Kyeon1, Hyeongil Nam1, Jong-Il Park1 1. Hanyang University (Korea) |
| This paper introduces a technique to improve the robustness of 3D voxel reconstruction even when there is occlusion in the image. Previous studies on existing CNN and Transformer-based voxel reconstruction tend to be sensitive when there is occlusion in the image. To solve these problems, we present a framework that integrates a NeRF-based method and a 3D-CNN decoder to enable 3D voxel reconstruction. The proposed ... | |
| 3DSAp2-8 | Influence of Material Appearance on Perception in Dyslexia *Takashi Yamazoe1, Hanae Ikeshita2 1. Seikei University (Japan), 2. Sagami Women's University (Japan) |
| Dyslexia indicate person of who have difficulty in reading and writing without any other developmental disabilities. Dyslexia need cue of character recognition. In this paper, authors were evaluated material appearance of microfacet and macrofacet to use cue of character recognition. Result suggested dyslexia perceive unique impression on material appearance. | |
| 3DSAp2-9L | Proposal of an 8×8 Holographic Directional Volumetric Display *Tomoya Isayama1, Takashi Nishitsuji2, Naoto Hoshikawa3, Hirotaka Nakayama4, Tomoyoshi Shimobaba1, Tomoyoshi Ito1, Atsushi Shiraki1 1. Chiba University (Japan), 2. Toho University (Japan), 3. University of Tsukuba (Japan), 4. National Astronomical Observatory of Japan (Japan) |
| This study aims to realize a directional image display system using electronic holography to observe the projected image from two directions (front and side). We confirmed that it was possible to observe different holographic reconstruction images from both directions of a volumetric display. | |
| 3DSAp2-10L | A Basic Study of the Parallel Polynomial Approximation-based Hologram Computation Method with a GPU *Harutaka Shiomi1, Tomoyoshi Ito1, Tomoyoshi Shimobaba1 1. Chiba University (Japan) |
| Holography is a promising technology for three-dimensional images, but hologram computation is very time-consuming. To accelerate it, we propose a parallel polynomial approximation-based method with a graphical processing unit (GPU) and compare the computation time and quality of reconstruction. It achieved over 15 times faster computations without significant degradations. | |
| 3DSAp2-11L | Virtual-Moving Microlens Arrays for 3D Imaging Application *Min-Kyu Park1, Kyung-Il Joo1, Tae-Hyun Lee1, Kwang-Hoon Lee1, Dong-Kil Lee1, Hak-Rin Kim2 1. Korea Photonics Technology Institute (Korea), 2. Kyungpook National University (Korea) |
| We propose an electrically controllable fast-switching virtual-moving microlens array (MLA). By controlling the polarization of incident lights without physical movement of the MLA, the periodic sampling position of the MLA can be switched fast with a polarization-switching layer. Using the virtual-moving MLA, spatial-resolution-enhanced light-field imaging system was demonstrated. | |
| 3DSAp2-12L | Expanding the Viewable Area of Directional Volumetric Displays *Kazuki Kamizuru1, Takeshi Nishitsuji2, Naoto Hoshikawa3, Hirotaka Nakayama4, Tomoyoshi Ito1, Tomoyoshi Shimobaba1, Astushi Shiraki1 1. Chiba University (Japan), 2. Toho University (Japan), 3. University of Tsukuba (Japan), 4. National Astronomical Observatory of Japan (Japan) |
| The existing directional volumetric display, which uses strings and a projector, allows for adjusting the viewing angle in the horizontal directions. However, it doesn't support manipulating the viewing angle in the vertical direction. Our goal is to enable the adjustment of the observation angle in the vertical direction. | |
| 3DSAp2-13L | Enhancing Image Quality in Directional Volumetric Displays with Red-Net *Seigou Takeshita1, Takahashi Nishitsuji2, Naoto Hoshikawa3, Hirotaka Nakayama4, Tomoyoshi Shimobaba1, Tomoyoshi Ito1, Atsushi Shiraki1 1. Chiba University (Japan), 2. Toho University (Japan), 3. University of Tsukuba (Japan), 4. National Astronomical Observatory (Japan) |
| The existing directional volumetric display, which employs threads and a projector, exhibits a significant problem: noise within the displayed image when juxtaposed with the original image. Herein, we harnessed deep learning techniques to expedite the process of enhancing image quality in contrast to conventional methodologies. | |
| 3DSAp2-14L | Height Adjustment of Directional Volumetric Displays Using Deep Learning *Yuta Fukumoto1, Takashi Nishitsuji2, Naoto Hoshikawa3, Hirotaka Nakayama4, Tomoyoshi Shimobaba1, Tomoyoshi Ito1, Atsushi Shiraki1 1. Chiba University (Japan), 2. Toho University (Japan), 3. University of Tsukuba (Japan), 4. National Astronomical Observatory of Japan (Japan) |
| The directional volumetric display, which uses threads, and a projector has an issue in that the irradiation position's height changes depending on the depth at which the thread is placed, even if the height of ray is the same. In this study, the afore-mentioned problem was solved using deep learning. | |
| 3DSAp2-15L | Point Cloud Compression with Optimization on Point Density for Reconstruction of Visually Significant Structure *Hideaki Kimata1 1. Kogakuin University (Japan) |
| We propose a compression method of a point cloud, which represents the shape of objects in the real world, while reducing compression noise that severely impairs object features, especially hole-popping. We introduce measures of point density and shape significance for optimizing coding rate and noise. | |
| 3DSAp2-16L | Pose Estimation and Calibration System for Monocular Camera Chung Wen Hung1, *Xuan Ni Chen1 1. National Yunlin University of Science and Technology (Taiwan) |
| A feature-based method for determining camera pose of monocular camera is proposed in this paper. This method helps experts establish image archives of artifacts for maintaining their state. A six-axis robotic arm is adopted to verify the efficiency of algorithm and the experimental results show accuracy of 0.1° and 2mm. | |
| 3DSAp2-17L | Emergency-drill Online Visual System to Build Ability against Unexpected Situations *Kyosuke Takahashi1, Akua Kawakami2, Masaki Umemoto2, Kousuke Takahashi2, Yuuya Sasai2, Yasunori Terao2, Kousuke Nakanishi2, Naoto Nakayama2, Yuuto Morishita2, Akito Inoue2, Shuto Ogura2, Kenta Saito2, Yuta Machigashira2, Kotomi Nakanishi2, Haruki Mizushina2, Kenji Yamamoto2, Hitoshi Inomo1 1. Kagawa University (Japan), 2. Tokushima University (Japan) |
| This paper introduces the emergency-drill system for building ability against unexpected situations. The system consists of main and local systems. Trainees at local location watch the video sent from a main location, and judge what to do on the unexpected situation that video shows. Several short scenarios are prepared before training, and trainer connects some of them according to the behavior of the trainees in ... | |
| 3DSAp2-18L | Emergency-drill Scenarios to Build Ability against Unexpected Situations on Tsunami *Kenji Yamamoto1, Masaki Umemoto1, Akua Kawakami1, Kousuke Takahashi1, Yuuya Sasai1, Yasunori Terao1, Kousuke Nakanishi1, Naoto Nakayama1, Yuuto Morishita1, Akito Inoue1, Shuto Ogura1, Kenta Saito1, Yuta Machigashira1, Kotomi Nakanishi1, Kyosuke Takahashi2, Hitoshi Inomo2, Haruki Mizushina1 1. Tokushima University (Japan), 2. Kagawa University (Japan) |
| This paper introduces the scenarios to build ability against unexpected situations between giant earthquake and tsunami. | |
| 3DSAp2-19L | Emergency Drill Using Online Visual System *Hitoshi Inomo1, Akua Kawakami2, Masaki Umemoto2, Kousuke Takahashi2, Yuuya Sasai2, Yasunori Terao2, Kousuke Nakanishi2, Naoto Nakayama2, Yuuto Morishita2, Akito Inoue2, Shuto Ogura2, Kenta Saito2, Yuta Machigashira2, Kotomi Nakanishi2, Kyosuke Takahashi1, Haruki Mizushina2, Kenji Yamamoto2 1. Kagawa University (Japan), 2. Tokushima University (Japan) |
| This paper reports on a disaster drill using an online visual system to prepare for earthquake and tsunami situations. The trainees walked with the students in the video to a nearby hill to avoid danger. Some unexpected situations happened along the way in the video. After experiment, trainees and trainer discussed whether the responses were appropriate. |
Topical Session on DX Sensing and Radiation Imaging
| Dec. 7 | 10:50-12:10 | Room 302 B | DXR1 | Materials for Radiation Imaging |
| Dec. 7 | 13:30-14:30 | Room 302 B | DXR2 | Radiation Imaging Technology |
| Dec. 7 | 17:30-18:50 | Exhibition Hall B | DXRp1 | Materials for Radiation Imaging |
DXR1: Materials for Radiation Imaging
Dec. 7 10:50-12:10 Room 302 B
Chair: Masanori Koshimizu (Shizuoka University)
Co-Chair: Toru Aoki (Shizuoka University)
| DXR1-1
10:50 |
Invited Development of Oxyfluoride Glasses for X-ray Imaging Applications *Hiromi Kimura1, Kenji Shinozaki1,2, Kento Sakaeda1,2, Kenichi Watanabe3, Takeshi Fujiwara1, Masahito Tanaka1, Daisuke Nakauchi4, Takumi Kato4, Noriaki Kawaguchi4, Takayuki Yanagida4 1. National Institute of Advanced Industrial Science and Technology (Japan), 2. Osaka University (Japan), 3. Kyushu University (Japan), 4. Nara Institute of Science and Technology (Japan) |
| We have synthesized Tb-doped oxyfluoride glasses by the conventional melt quenching method, and the potential for X-ray imaging applications was evaluated. The synthesized glass showed green emission under X-ray irradiation, which was suitable for the wavelength sensitivity of Si-photodiode. Although the lifetimes of Tb-doped glasses had a few milliseconds, Tb-doped oxyfluoride glasses were considered usable as integration-type detectors. | |
| DXR1-2
11:10 |
Invited Study of BGaN Semiconductor for Novel Neutron Semiconducting Detector *Takayuki Nakano1, Toru Aoki1 1. Shizuoka University (Japan) |
| BGaN semiconductor is expected as a novel neutron detection technology because of including B atom, which has large neutron capture cross section. Furthermore, BGaN has high-temperature tolerance and is expected as a radiation detector in a high-temperature conditions. In this study, the temperature tolerance of BGaN semiconductor detectors was investigated. | |
| DXR1-3
11:30 |
Invited Radiation Sensing Using Thallium Bromide Crystals *Keitaro Hitomi1, Mitsuhiro Nogami1 1. Tohoku University (Japan) |
| Radiation sensors using thallium bromide (TlBr) crystals were fabricated in this study. The TlBr crystals were grown by the traveling molten zone method. The sensors fabricated by constructing electrodes on the crystals exhibited good energy resolutions for gamma rays at room temperature. | |
| DXR1-4
11:50 |
Invited Evaluation of Crystal Quality of TlBr Semiconductor Detector *Kenichi Watanabe1, Sota Hasegawa1, Yusuke Sugai1, Mitsuhiro Nogami2, Keitaro Hitomi2 1. Kyushu University (Japan), 2. Tohoku University (Japan) |
| Thallium bromide (TlBr) is a semiconductor attractive for gamma-ray detectors and imagers. In order to realize a large size TlBr detectors, we should discuss crystal quality. As the crystal quality evaluation methods, we applied neutron Bragg-dip imaging, which is based on the neutron diffraction technique. |
DXR2: Radiation Imaging Technology
Dec. 7 13:30-14:30 Room 302 B
Chair: Masanori Koshimizu (Shizuoka University)
Co-Chair: Toru Aoki (Shizuoka University)
| DXR2-1
13:30 |
Invited Development of a Diamond Radiation Detector using Boron-Doped Layer as a Neutron Converter *Tomoaki Masuzawa1, Takatoshi Yamada2 1. Shizuoka University (Japan), 2. National Institute of Advanced Industrial Science and Technology (Japan) |
| A radiation detector made of boron(B)-doped/undoped diamond film stacking structure has been proposed, aiming at neutron detection using B-doped layer as a neutron-alpha converter. A prototype detector was fabricated using chemical vapor deposition (CVD)-grown polycrystalline diamond, and detections of both alpha particle and neutron were demonstrated. In addition, detection of alpha particle was characterized to investigate carrier transport and band model ... | |
| DXR2-2
13:50 |
Invited Single Crystal Diamond Photon-Counting Imager *Toru Aoki1,2, Kohei Toyoda1,2, Koji Koyama3, Seoun Woo Kim3, Hiroki Kase1, Junichi Nishizawa1,2, Kento Tabata1, Katsuyuki Takagi1,2, Keitaro Hitomi4 1. Shizuoka University (Japan), 2. ANSeeN Inc. (Japan), 3. Orbray Co. Ltd. (Japan), 4. Tohoku University (Japan) |
| We developed an X-ray imaging detector using single-crystal diamond, which has unique properties like high radiation tolerance and a similar atomic number to human tissue. The system includes an indium plate electrode, a pixelated silver electrode, and a photon-counting ROIC. We successfully imaged a 1 mm-thick lead plate using 100 kV X-rays, motivating further optimization for single-crystal diamond detectors. | |
| DXR2-3
14:10 |
Invited 3D Visualization of Multi Energy X-Ray CT Using Spatial Reality Display and Motion Capture *Hiroki Kase1, Junichi Nishizawa1, Kento Tabata1, Katsuyuki Takagi1, Toru Aoki1 1. Shizuoka University (Japan) |
| Data for each X-ray energy band was represented in a mixed reality to achieve three-dimensional representation in material discrimination segmentation using X-ray energy information. The data were represented three-dimensionally on a spatial reality display, and the internal structure was observed from any position and angle by motion capture. |
DXRp1: Materials for Radiation Imaging
Dec. 7 17:30-18:50 Exhibition Hall B
| DXRp1-1 | Development of LiGaO2 Nanoparticle-Loaded Plastic Scintillators for Neutron Detection *Haruhisa Tsukahara1, Yutaka Fujimoto2, Keisuke Asai2, Masanori Koshimizu1 1. Shizuoka University (Japan), 2. Tohoku University (Japan) |
| 6Li-enriched LiGaO2 nanoparticles were added to plastic scintillators for neutron detection. 15 wt% LiGaO2-loaded plastic scintillator had the highest light yield of 2450 photons/neutron. | |
| DXRp1-2 | Development of UV-Cured Plastic Scintillators Having High Scintillation Light Yields *Naru Hayashi1, Yutaka Fujimoto2, Keisuke Asai2, Masanori Koshimizu1 1. Shizuoka University (Japan), 2. Tohoku University (Japan) |
| We have succeeded in the development of UV cured plastic scintillators having high scintillation light yields. | |
| DXRp1-3 | Thermoluminescence of Tb3+- and Sm3+-Codoped LiTaO3 Ceramics *Yuta Hiramatsu1, Yutaka Fujimoto2, Keisuke Asai2, Masanori Koshimizu1 1. Shizuoka University (Japan), 2. Tohoku University (Japan) |
| Undoped and rare-earth-doped LiTaO3 were prepared, and their TL properties were investigated after irradiation with X-rays. Tb, Sm-codoped one had a significantly higher TL intensity than TLD-100. | |
| DXRp1-4 | Development 6LiSal-Loaded Liquid Scintillators for High Sensitivity Neutron Detection *Akito Watanabe1, Masanori Koshimizu2, Kenichi Watanabe3, Atsushi Sato1, Yutaka Fujimoto1, Keisuke Asai1 1. Tohoku University (Japan), 2. Shizuoka University (Japan), 3. Kyusyu University (Japan) |
| Neutron Imaging is receiving significant attention in the material science field. However, alternative types of detectors are required because of the limited availability of conventional detectors using 3He. Here, by employing a neutron and gamma-ray discrimination technique, we developed 6LiSal-loaded liquid scintillators as future candidate detectors with high sensitivity. | |
| DXRp1-5 | Development of Plastic Scintillators Loaded with Emissive Perovskite Quantum Dots *Masanori Koshimizu1, Atsushi Sato2, Arisa Magi2, Shunji Kishimoto3, Yutaka Fujimoto2, Keisuke Asai2 1. Shizuoka University (Japan), 2. Tohoku University (Japan), 3. High-Energy Accelerator Research Organization (Japan) |
| We have developed plastic scintillators loaded with perovskite quantum dots (QDs). Long scintillation components were observed owing to the self-absorption of the QDs by other QDs. The long components were partially suppressed by the addition of wavelength shifting molecules |
Topical Session on Image Sensing Technologies
| Dec. 6 | 13:00-14:20 | Room 201 | IST1 | Quantum Image Sensor |
| Dec. 7 | 15:20-16:40 | Room 302 A | IST2 | Infrared Image Sensors and its application |
| Dec. 7 | 17:10-18:30 | Room 302 A | IST3 | Bio-Medical Image Sensing |
| Dec. 8 | 9:00-9:40 | Room 302 A | IST4 | Technology for Information Sensing Societies |
| Dec. 8 | 10:50-12:10 | Room 302 A | IST5 | Image-Sensor Expressiveness |
| Dec. 6 | 15:10-16:30 | Exhibition Hall B | ISTp1 | Sensing and Data Utilization |
IST1: Quantum Image Sensor
Dec. 6 13:00-14:20 Room 201
Chair: Masayuki Ikebe (Hokkaido University)
Co-Chair: Prasoon Ambalathankandy (Hokkaido University)
| IST1-1
13:00 |
Invited High-Definition SPAD Image Sensors: Technical Trends and Applications *Hiroyuki Tsuchiya1 1. Canon Inc. (Japan) |
| The development of photon counting image sensors has attracted attention. We present 3.2 Megapixel 3D-stacked backside-illuminated (BSI) charge focusing single-photon avalanche diode (SPAD) image sensor [1], and 1 Megapixel 3D-stacked BSI SPAD image sensor with Pixel-Wise Exposure Control and Adaptive Clocked Recharging [2]. | |
| IST1-2
13:40 |
Invited Overview of Image Sensors for X-ray Astronomy *Takeshi Tsuru1 1. Kyoto University (Japan) |
| X-ray astronomy observations in the 0.5-10 keV band are typically made using a combination of X-ray imagers and Walter-type X-ray mirrors mounted on an astronomical satellite. X-ray CCDs are widely used, but a shift to active pixel sensors is expected in the future. |
IST2: Infrared Image Sensors and its application
Dec. 7 15:20-16:40 Room 302 A
Chair: Masayuki Ikebe (Hokkaido University)
Co-Chair: Prasoon Ambalathankandy (Hokkaido University)
| IST2-1
15:20 |
Invited Fabrication and Demonstration of VGA Format Microbolometer FPAs using Semi-Conducting SWCNT Networks for Uncooled LWIR Image Sensor *Tomo Tanaka1,2, Masahiko Sano1, Masataka Noguchi1,2, Takashi Miyazaki1,2, Megumi Kanaori2, Toshie Miyamoto1,2, Naoki Oda1, Ryota Yuge1,2 1. NEC Corporation (Japan), 2. AIST (Japan) |
| We fabricated VGA format microbolometer focal plane allays of 640 × 480 pixels with semi-conducting single walled carbon nanotubes (SWCNT) as detection materials. The responsivity of them in LWIR region showed about 105 V/W, respectively. We expect that the high-purity semi-conducting SWCNT networks effectively work for higher responsivity of microbolometer. | |
| IST2-2
16:00 |
Invited Multi-Tap NIR Lock-In CMOS Imager for Non-Contact Physiological Signal Monitoring Chen Cao1, Masashi Hakamata1, Keita Yasutomi1, Keiichiro Kagawa1, *Shoji Kawahito1 1. Shizuoka University (Japan) |
| Non-contact physiological monitoring using image sensors becomes popular for the cutting-edge medical and security applications. This paper reports a multi-tap NIR lock-in CMOS imager which is able to achieve heart rate and its variability measurements under varied ambient light and artificial motion conditions with excellent SNRs. |
IST3: Bio-Medical Image Sensing
Dec. 7 17:10-18:30 Room 302 A
Chair: Chen Cao (Shizuoka University)
Co-Chair: Prasoon Ambalathankandy (Hokkaido University)
| IST3-1
17:10 |
Invited Implantable Imaging Devices for Biomedical Applications *Jun Ohta1 1. Nara Institute of Science and Technology (Japan) |
| This presentation focuses on the research results of the speaker's group on in vivo implantable imaging devices for biomedical applications. In particular, I will introduce a method to measure the spatio-temporal dynamics of neurotransmitters through fluorescence with the help of genetic engineering. | |
| IST3-2
17:50 |
Sheet-type Image Sensor with Organic Photodetector for Biomedical Imaging and Sensing *Tomoyuki Yokota1, Cheng Dongkai1, Takao Someya1 1. The University of Tokyo (Japan) |
| We have developed a sheet-type image sensor that enables high-resolution and high-speed reading. This sheet-type image sensor can take the high-resolution image of fingerprints and veins used for biometric authentication. In addition, the same sheet-type imager can measure the pulse wave which is one of the vital signs. | |
| IST3-3
18:10 |
A Preliminary Demonstration of High Resolution Proximity Capacitance-Optical Multimodal CMOS Image Sensor *Tsubasa Nozaki1, Yoshiaki Watanabe1, Chia-Chi Kuo1, Koga Saito1, Takezo Mawaki1, Rihito Kuroda1 1. Tohoku University (Japan) |
| This paper presents a preliminary demonstration of the proximity capacitance-optical multimodal imaging using a 2.8 µm-pitch 1.8M pixels CMOS image sensor. The experimental results showcase the high accuracy capacitance imaging, the good functionality of optical imaging, and the high spatial resolution, validating the feasibility of the multimodal imaging principle. |
IST4: Technology for Information Sensing Societies
Special Topic of Interest on Artificial Intelligence and Smart Society
Dec. 8 9:00-9:40 Room 302 A
Chair: Masayuki Ikebe (Hokkaido University)
Co-Chair: Prasoon Ambalathankandy (Hokkaido University)
| IST4-1
9:00 |
Lensless Image Reconstruction via Stochastic Refinement *Jia-Lun Wu1, Chieh-En Lee1, Chung-Hao Tien1 1. National Yang Ming Chiao Tung University (Taiwan) |
| Lensless imaging prevents personal privacy from being spied amid the imaging formation process, in this study we applied a coded mask to optically encrypt the scene and utilized the diffusion probabilistic model for computational decryption. | |
| IST4-2
9:20 |
C2RTL-Enabled Sustainable Computing: Building a RISC-V CPU Microdevice Platform for a Greener Future *Panithan Srisinsuphya1, Kosuke Takamatsu1, Hiroto Tazaki1, Yasufumi Yokoshiki1, Takashi Tokuda1 1. Tokyo Institute of Technology (Japan) |
| This paper introduces the possibility of utilizing C2RTL as an aid for the creation of a microdevice platform that would serve to reduce the amount of waste in both time and material. It also introduces an illumination sensor to be used as a sensor for the device. |
IST5: Image-Sensor Expressiveness
Dec. 8 10:50-12:10 Room 302 A
Chair: Masayuki Ikebe (Hokkaido University)
Co-Chair: Takahiro Ishinabe (Tohoku Univ.)
| IST5-1
10:50 |
Invited High Dynamic Range CMOS Image Sensor Technologies *Isao Takayanagi1 1. Brillnics (Japan) |
| This paper describes high dynamic range CMOS image sensor technologies and key technical topics. (1) A multiple-CG (conversion gain) sensor technology, (2) “LOFIC” technology to accumulate and readout overflow charge, (3) 3Q-DPS (digital pixel sensor) technology to realize low power and very high dynamic range global shutter image sensors. | |
| IST5-2
11:30 |
Color Difference Evaluation for Transmitted Images of Surveillance Cameras *Chia-Yi Chou1, Tzung-Han Lin1 1. National Taiwan University of Science and Technology (Taiwan) |
| Surveillance cameras equipping the pan-tilt-zoom (PTZ) feature are widely utilized in various domains due to their versatile functionalities. However, the measured colors of environment from cameras may differ during transmission. By conducting experiments, this study aims to examine these differences, offering valuable insights into color management within surveillance camera applications. | |
| IST5-3
11:50 |
Halo Reduction in Display Systems through Smoothed Local Histogram Equalization and Human Visual System Modeling *Prasoon Ambalathankandy1, Yafei Ou2, Masayuki Ikebe1 1. Hokkaido University (Japan), 2. Tokyo Institute of Technology (Japan) |
| Halo artifacts significantly impact display quality. We propose a method to reduce halos in Local Histogram Equalization (LHE) algorithms by separately addressing dark and light variants. This approach results in visually natural images by exploring the relationship between lateral inhibition and halo artifacts in the human visual system. |
ISTp1: Sensing and Data Utilization
Dec. 6 15:10-16:30 Exhibition Hall B
| ISTp1-1 | Design and Development of Harvesting Mechanism for a Tomato Harvesting Robot *Ying-Ti Weng1, Kuang-Wen Hsieh1, Chia-Chi Chang1, Cong-Wei Huang1 1. National Chung Hsing University (Taiwan) |
| Smart farming addresses labor shortage by utilizing image recognition and harvesting robots for beef tomato cultivation. The developed end-effector combines ripeness and pedicel recognition, 3D positioning, and angle computation. Multiple and single fruit harvesting methods were employed, achieving success rates of 81.4% and 74.2% respectively. Average harvest time was 27 seconds. | |
| ISTp1-2 | Development of Goose Pool Stay Duration Evaluation System Based on Deep Learning Technology *Shuo Ching Sun1, Zi-Heng Jian1, Yao-Chuan Tsai1 1. National Chung Hsing University (Taiwan) |
| In this study, we developed a geese duration evaluation system using YOLO detection and tracking algorithms. The experimental result indicated that the trained detection model achieves excellent precision and recall rates of 94.6% and 84.1%. Also, the tracking algorithm achieves a tracking accuracy of 87%, enabling timely measurements for farmers | |
| ISTp1-3 | Combining Deep Learning Detection Technology and Chicken Comb Color Quantification System for Chicken Health Assessment *Hsiu-Yun Hu1, Chia-Jung Chang1, Kuang-Wen Hsieh1, Yao-Chuan Tsai1 1. National Chung Hsing University (Taiwan) |
| This research applies deep-learning detection techniques to identify chicken combs in commercial poultry houses. The detection model's precision achieves 90%. Calculating color value in CIE Lab color space and using 2.5 standard deviations as the threshold can evaluate the health condition of chickens. The accuracy rate reaches 94%. | |
| ISTp1-4 | Chicken Flock Response Health Evaluation System Based on Laser Stimulation and Deep Learning Technique *Chun-Chen Huang1, Rui-Xiang Zhou1, Chia-Wei Su1, Ying-Chieh Chen1, Yan-Siang Chen1, Yao-Chuan Tsai1 1. National Chung Hsing University (Taiwan) |
| The study utilizes laser to stimulate chicken activity changes for evaluating health status by deep learning techniques. System consists of embedded system, galvo scanning, camera monitoring, laser. When low activity, laser apply on test within response. As the results, difference responsiveness (P<0.001) when stimulation healthy chicks with temporary low activity. |
Topical Session on Metaverse System
| Dec. 7 | 15:20-16:20 | Room 301 B | MVS1 | Metaverse Systems and Applications |
| Dec. 7 | 17:10-18:30 | Room 301 B | MVS2/PRJ6 | Metaverse Systems for Automotive Applications |
| Dec. 8 | 9:00-10:20 | Room 301 B | MVS3/INP4 | Input Technologies for Metaverse Systems |
| Dec. 8 | 13:30-14:50 | Room 301 A | MVS4/3DSA9/3D9 | 3D Technologies for Metaverse Systems |
MVS1: Metaverse Systems and Applications
Dec. 7 15:20-16:20 Room 301 B
Chair: Haruhiko Okumura (Toshiba)
Co-Chair: Satoshi Ouchi (Hitachi)
| MVS1-1
15:20 |
Invited Recent Office Trends, Including Virtual Working - Ergonomics Point of View - *Kei Hyodo1 1. Yuasa System Co. (Japan) |
| Recently, there is a big change in working, called 'Activity-based Working' This would allow a working person to work in an environment where she/he chooses including virtual working. That would change ergonomics requirement completely, including displays. This paper introduces that change and affect for displays. | |
| MVS1-2
15:40 |
Invited Practical Technology for the Foundation of the Metaverse and Applied Research *Kenichiro ito1 1. The University of Tokyo (Japan) |
| The rapid evolution of the Metaverse necessitates practical technology solutions to establish a robust foundation. This includes the intersection of novel technology and the Metaverse's foundation, innovative tools addressing key challenges for immersive experiences, interactions, data interoperability, security, and scalability. Effective approaches enabling sustainable growth and widespread adoption are discussed. | |
| MVS1-3
16:00 |
Digitalization of Oil Paintings: Leveraging PBR Textures to Reproduction of Realistic Appearance *Chih Yang1, Ying-Hsuan Lee1, Tzung-Han Lin1 1. National Taiwan University of Science and Technology (Taiwan) |
| This research proposes a method to digitize oil painting by capturing PBR textures such as albedo, normal, and height maps. Unlike traditional methods that focuses on only color and resolution, this study can reproduce the realistic appearance under different viewing angles and lighting conditions in a virtual 3D world. |
MVS2/PRJ6: Metaverse Systems for Automotive Applications
Special Topic of Interest on Automotive Displays
Dec. 7 17:10-18:30 Room 301 B
Chair: Satoshi Ouchi (Hitachi)
Co-Chair: Kazuhiro Ohara (Visitech)
| MVS2/PRJ6-1
17:10 |
BMW Vision Dee - Technological Challenges for the Next Generation of Advanced Automotive Displays *Mark Riebe1, Michael Brachvogel1 1. BMW AG (Germany) |
| The BMW Vision DEE concept car shown at CES 2023 has demonstrated various advanced display concepts. This talk will dive into the technological challenges related with these concept with a special focus on the advanced head-up display. | |
| MVS2/PRJ6-2
17:30 |
A Novel Fully Transparent Photoluminescent Display and Its Vehicle Applications *Ted Sun1, Leonard Sun1 1. sun innovations inc (United States of America) |
| A fully transparent emissive display is developed, using novel RGB emissive nanomaterials that can be selectively excited by digital projection of 3 violet-blue wavebands. The novel photoluminescent display enables a scalable and freeform emissive display onto any surfaces, including vehicle glass windows, with high display quality and superior optical clarity. | |
| MVS2/PRJ6-3
17:50 |
Measuring Optical Performance of Near-Eye Displays *Yiming Li1, Wan-Pin Tsai1, Tsung-Xian Lee1 1. National Taiwan University of Science and Technology (Taiwan) |
| In recent years, the near-eye display market has grown gradually, and how to accurately measure the performance of the display is an important research topic. This research uses a combined lens design and an industrial camera to form the measurement system. The above measurement system was used to measure and compare the three indicators of luminance, contrast and transparency of commercially available near-eye displays. | |
| MVS2/PRJ6-4L
18:10 |
Automotive AR HUD Image Correction Using Computer-Generated Holographic Technology *Chen Han-Syuan1, Tzu-An Chou1, Chih-Hao Chuang2, Chien-Yu Chen1 1. National Taiwan University of Science and Technology (Taiwan), 2. Feng Chia University (Taiwan) |
| This study proposes a new holographic method to improve Head-Up Display (HUD) systems in vehicles. By combining an angled windshield and the Modified Gerchberg-Saxton Algorithm (MGSA), our augmented reality (AR) HUD system effectively reduces image distortion. |
MVS3/INP4: Input Technologies for Metaverse Systems
Special Topic of Interest on AR/VR and Hyper Reality
Dec. 8 9:00-10:20 Room 301 B
Chair: Masaki Yasugi (Fukui Pref. Univ.)
Co-Chair: Makoto Sato (Tokyo Tech)
| MVS3/INP4-1
9:00 |
Invited Haptic Interaction Techniques for Dexterous Manipulation in Metaverses *Shoichi Hasegawa1, Yunxiu Xu1, Ayaka Fukasawa1, Riho Taniguchi1, Takumi Sato1 1. Tokyo Institute of Technology (Japan) |
| Users spend metaverses for a long time, and fingers manipulate real objects and act as gestures for conversation in the metaverse. VR controllers are a hindrance, and freehand tracking will be widespread. We propose a haptic interface for dexterously manipulating virtual objects in metaverses. | |
| MVS3/INP4-2
9:20 |
Invited Advancing Haptic Display Technology for Embodied Metaverse Experiences *Arata Horie1,2 1. Keio University (Japan), 2. commissure Inc. (Japan) |
| In this presentation, we will explore the research on haptic display within the metaverse, an expected growth area stemming from XR technology, and discuss its prospects. A haptic display is a device that presents tactile stimuli to users, with the aim of reproducing environmental perception in XR, and there is a growing diversity of methods for this purpose. In this talk, we will provide an ... | |
| MVS3/INP4-3
9:40 |
Invited Frame-Wise Action Recognition for Skeleton-Based Anomaly Detection *Hiroaki Tani1, Tomoyuki Shibata1 1. Toshiba Corporation (Japan) |
| We propose a novel method for recognizing human actions from a single frame. Our approach utilizes the “action-ness” obtained by a pretrained model, enabling effective training for frame-wise action recognition without additional data. We also introduce several anomaly detection applications utilizing our method. | |
| MVS3/INP4-4
10:00 |
Guiding Technology for Faster Work by Controlling the Presentation Speed of Hand Gesture Instruction in Augmented Reality *Yuya Ogi1, Takashi Numata1, Naohito Ikeda1 1. Hitachi.Ltd. (Japan) |
| To improve the work efficiency, we developed a guiding technology for faster work to control the presentation speed of augmented reality (AR) contents including hand gesture instruction. This technology improved the work efficiency by 1.4 times compared with the conventional work instruction. The failure rate was also reduced from 9.72 % to 1.39 %. |
MVS4/3DSA9/3D9: 3D Technologies for Metaverse Systems
Special Topic of Interest on AR/VR and Hyper Reality
Dec. 8 13:30-14:50 Room 301 A
Chair: Yuzo Hisatake (Shizuoka University)
Co-Chair: Taesoo Kwon (Hanyang Univ.)
| MVS4/3DSA9/3D9-1
13:30 |
Invited Control of a Single-Rigid-Body Character in Various Environments *Taesoo Kwon1, Yoonsang Lee1 1. Hanyang University (Korea) |
| Expressing the full-body character as a single rigid body, we can obtain a control policy that can adapt to various unobserved environmental changes and controller transitions. We demonstrate the ability of the policy with environments such as running on uneven terrain or pushing a box, and transitions between learned policies. | |
| MVS4/3DSA9/3D9-2
13:50 |
Real-time MIV Player for Metaverse Service *Hong-Chang Shin1, Gwangsoon Lee1, Won-Sik Cheong1, Hyun-gon Choo1 1. Electronics and Telecommunications Research Institute (Korea) |
| The MPEG-I Visual group is currently working on standardization efforts related to 3DoF+ video generation technology with the aim of providing immersive video services under the name MPEG Immersive Video (MIV). Immersive video technology, which combines multiple camera footage to synthesize scenes in virtual space and reproduce lifelike videos, is closely related to reality-based metaverse services. In this paper, we introduce the core technology of ... | |
| MVS4/3DSA9/3D9-3
14:10 |
Head Motion-Based Accident Detection Model in Construction Site Using Simulation *Kisub Lee1, Minsu Kyeon1, Gaeun Noh1, Jong-Il Park1 1. Hanyang University (Korea) |
| This study presents an accident detection model using a head-mounted display (HMD) device to prevent casualties caused by falls and material collisions at construction sites. The model utilizes simulations to generate data on head movements during accident scenarios. By comparing this data with animation data that represents normal conditions, the model performs binary classification to identify whether a situation is hazardous or safe. This study ... | |
| MVS4/3DSA9/3D9-4
14:30 |
Ultra-Wide Field-of-View Display by Use of Aerial Stereoscopic Images Reconstructed Just Behind the Eyes *Hiroki Takatuska1, Munekazu Date2, Masaki Yasugi1,3, Shiro Suyama1, Hirotsugu Yamamoto1 1. Utsunomiya University (Japan), 2. Tokushima Bunri University (Japan), 3. Fukui Prefectural University (Japan) |
| When an observer's eye is placed before the aerial image, an ultra-wide field-of-view is realized because the image is reconstructed just behind the eye. However, negative binocular disparity is reproduced. We use stereoscopic display technique to reproduce positive binocular disparity on the aerial images that are reconstructed behind the observer. |