IDW '23



Innovative Demonstration Session

Place: Exhibition Hall B, TOKI MESSE Niigata Convention Center
Hours: Wednesday, December 6   12:40-18:00
Thursday, December 7   10:00-18:00
Friday, December 8   10:00-14:00

December 6
12:30-16:30, Exhibition Hall B
IDEMO-1 Spatial Thermal Display Using Visible Light for Virtual Heat Source
Masahiro Nishizawa1
1. Japan Broadcasting Corp. (Japan)
Related IDW ’ 23 paper: VHF4-3L
  We present a spatial thermal display designed to simulate a virtual heat source within a virtual environment. This display gently warms the user's facial skin beneath the HMD (Head-Mounted Display) by utilizing intense visible light emitted from an array of optical fibers connected to an LED array. As the user moves their head, the illuminance distribution changes, creating the illusion of a stable heat source located nearby illuminating the face. In our demonstration, participants have the opportunity to experience the sensation of warmth emanating from a campfire or the sun within a virtual environment. 
IDEMO-2 High-Brightness µLEDs from InGaN/GaN Pyramidal Structure Arrays
Per Olof Holtz1
1. Polar Light Tech AB (Sweden)
  µLEDs based on individual InGaN/GaN pyramidal quantum structures are obtained by performing a novel bottom-up re-growth process on lithographically patterned SiN-masked GaN templates. The new 3D µLED-structures with quantum wells on the pyramidal facettes as emitters can be manufactured down to um-size. We have recently demonstrated pyramidal µLEDs with brightness of ~ 3M nits with an estimated external quantum efficiency of ~3% for emission at 470 nm with band width of 20 nm. The high quality and homogeneous pyramidal µLED structures combined with the flexibility of selective activation paves a promising route to µLED applications within AR based HUDs/HMDs.
IDEMO-3 Spatial Blending Aerial Display That Shows Aerial Images Blended in Proportion to the Viewing Angle
Kohei Kishinami1, Shiro Suyama1, Hirotsugu Yamamoto1
1. Utsunomiya University (Japan)
  We will demonstrate the spatial blending optical system that dynamically changes the contents of the display according to the user's viewpoint using two sets of polarized AIRR (p-AIRR). p-AIRR consists of a reflective polarizer, a light source tablet, and a retro-reflector. The optical system is arranged so that the image formation positions of the aerial images formed by the left and right p-AIRR systems overlap. The user can observe different information on different blend ratios for each observation point on the left and right.
IDEMO-4 Invited Display Measurement and Gamut Rings
Kenichiro Masaoka1
1. NHK Foundation/NHK Science & Technology Research Laboratories (Japan)
Related IDW ’ 23 paper: FMC11-3L
  Display color capability has traditionally been represented by a triangular area on an xy or u'v' chromaticity diagram. However, chromaticity diagrams cannot show color gamut because they lack the critical third dimension of luminance/lightness. Hence, the area is referred to as a chromaticity gamut, not color gamut. Gamut rings have been developed and standardized (@IEC&CIE&ICDM) to express true color capability by showing lightness, chroma, and hue on a 2D diagram. This high-speed automated prototype measures and calculates true color gamut and outputs gamut rings and their intersection to a reference color space, all within 60 seconds.
IDEMO-5 Aerial-Imaging Light Field Camera and Its Application
Shoma Kono1, Masanari Kameyama1, Masahiro Kawakita1
1. Osaka institute of technology (Japan)
  We present the development of an aerial-imaging light field (ALF) camera that can acquire light rays from objects with a wide viewing angle of more than 20 degrees. The ALF camera system comprises a dihedral corner reflector array to form aerial images of the objects, lens array, and high-resolution digital camera. We demonstrate real-time integral three-dimensional (3D) capture and display system using integral 3D display and moving objects. Moreover, we show the possibilities of highly realistic glasses-free 3D video communication system using ALF camera and integral 3D display.
IDEMO-6 Aerial Display Viewable from All Horizontal Directions Using Aerial Imaging by Retro-Reflection
Masaki Aihara1, Kengo Fujii1, Tomohiro Yendo1
1. Nagaoka University of Technology (Japan)
  Conventional aerial displays have a narrow viewing field, resulting in poor contact rates when used as advertisements. We demonstrate an aerial display viewable from all horizontal directions like an advertising column by using AIRR. By rotating the AIRR structure at high speed and connecting the afterimages of the aerial images by time-division display, a cylindrical aerial image can be realized. We rotate the rotating part at 150 rpm and display images at 120 fps on the monitor. From this parameter, a cylindrical aerial image with 16 aerial images is displayed at 10 fps.
IDEMO-7 Double-Layered Floating Images Using Two Light Sources in Arc 3D Display
Hiroto Oishi1, Shiro Suyama1, Hirotsugu Yamamoto1
1. Utsunomiya University (Japan)
  We will demonstrate the system that presents two aerial images on an arc 3D display. Arc 3D display is a technology that presents floating images by illuminating a single light source on an arc 3D substrate with arc-shaped scratches. In this demonstration, the observer will perceive floating images with different floating distances by illuminating two light sources onto the arc 3D substrate as shown in Figure 1. The observer will perceive two overlapped floating images when observing from in front of two floating images with different floating distances due to different motion parallax when the observer moves horizontally.

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December 7
12:30-16:30, Exhibition Hall B
IDEMO-8 Aerial Display Thinning System in AIRR Using Fresnel Lens to Form Long Distance Aerial Image
Shinya Sakane2, Shiro Suyama1, Hirotsugu Yamamoto1
1. Utsunomiya University (Japan), 2. Seiwa Electric Mfg. Co., Ltd. (Japan)
Related IDW ’ 23 paper: PRJ3/FMC3-4
  We aim to utilize aerial imaging by retro-reflection (AIRR) for transport infrastructure. Aerial signage in transportation system requires a long floating distance. In this case, the distance of the light source in the AIRR optical system has to be increased, which increases the size of the device. To implement aerial signage with a long floating distance within a limited footprint, we propose AIRR optics combined with a Fresnel lens. The distance from the beam splitter to the aerial image is much longer than the distance from the splitter to the light source, by using a Fresnel lens. This makes the aerial image longer and the device thinner. We demonstrate a prototype to confirm our optical design.
IDEMO-9 Advanced Mobile Displays with Novel Perovskite Quantum Dots
Chin-Yueh Liao1, Chun Che Lin2
1. Foxconn Technology CO.,LTD. (Taiwan) , 2. National Taipei University of Technology (Taiwan)
Related IDW ’ 23 paper: FMC1-4,PH3/OLED5-2
  Novel perovskite quantum dots (QD) for color conversion layers (CCL) were brilliantly demonstrated, while two types of QD applications will be shown in IDW2023 i-demo exhibition. The first type is 6.56” 4K panels embedded with optical thin films containing green QDs, along with conventional LCD panels, as shown in Fig-1,revealing the color enhancement with green QD embedded. The second type are two round-shaped portable demo-kits embedded with QDCC , as shown in Fig-2 and Fig-3.
IDEMO-10 Ultra-Wide Field-of-View Display by Use of Aerial Image
Hitoki Takatsuka1, Munekazu Date2, Masaki Yasugi1,3, Shiro Suyama1, Hirotsugu Yamamoto1
1. Utsunomiya University (Japan), 2. Tokushima Bunri University (Japan), 3. Fukui Prefectural University (Japan)
Related IDW ’ 23 paper: MVS4/3DSA9/3D9-4
  We will demonstrate Ultra-Wide Field-of-View Display by Use of Aerial Imaging by retro-reflection (AIRR). Optical system for ultra-immersive viewing of an aerial image is shown in Figure. In the demonstration, you will observe between the aerial image and the beam splitter. You can look at the hardware that is place in front of them and viewed image is reconstructed behind the observer. This observation method expands the range of applications for aerial displays and give an immersive sensation with ultra-wide field-of-view.
IDEMO-11 Acquisition of High-Density Dynamic Light Field Using Shack-Hartmann Wavefront Sensor and Its Application to Real-Time Holographic Display
Koki Matsuoka1, Chihiro Tsutake1, Keita Takahashi1, Toshiaki Fujii1
1. Nagoya University (Japan)
Related IDW ’ 23 paper: 3DSA7/3D7-2
  We demonstrate a real-time holography system that includes light field acquisition and 3D holographic display. We acquire a dynamic light field using an SHW sensor. The acquired dynamic light field consists of a set of multi-view images with high angular resolution. We generate a hologram based on a holographic stereogram technique, where we use the light field acquired by our SHW camera. The generated hologram is displayed on an SLM. It is worth noting that our system works in real time. Thanks to the high angular resolution of the light field, comfortable 3D perception can be achieved.
IDEMO-12 Invited Force Touch for On-Screen User Interface
Yasuhiro Sugita1
1. Sharp Display Technology Corporation (Japan)
Related IDW ’ 23 paper: INP1-2
  The 10.1 inch prototype using high-sensitive force sensor is novel steering wheel with on-screen buttons. This prototype realizes on-screen buttons with the same usability as mechanical buttons. By combining our high-sensitive force sensor technology with button-shaped bumps cover and haptics feedback, users can also perform input operations without looking at the screen. Specifically, our technology enables blind input operation by (1) “searching” with the uneven cover, (2) "deciding" with the press operation, and (3) “confirming” with haptics and sound. Future, the many physical buttons that have been installed up to now will be consolidated and replaced with our novel on-screen buttons.
IDEMO-13 One-Way Observable Imaging and Color Changeable Optical Film for Window Display
Kunio Sakamoto1
1. Konan University (Japan)
Related IDW ’ 23 paper: FMCp3-5L
  Suppose that you look Arabic numerals on glass windows.  Which does it mean '85' or '28'?  You end up watching the mirrored images when you view from back side.   We intend to demonstrate basic technologies which are also shown at poster sessions.  The keywords of our research are 'see-through', 'transparent' and 'invisible' as follows; 1) The polarized light control technique enables to make images invisible from back side(fig (c)).  2) Rotate the polarizer on our-developed color generating films and each color shifts to some colors; blue, green and red.  All you have to do is that you only choose the direction of polarizer or films(fig. (d)).
IDEMO-14 Thin Diffuser Film That Does Not Require Alignment for Local Dimming Mini-LED Display
Marii Nishikawa1
1. Dai Nippon Printing Co.,Ltd (Japan)
Related IDW ’ 23 paper: FMCp3-6L
  We will demonstrate using the diffuser film that does not require alignment we have developed. In the first demonstration, we will irradiate a diffuser film with blue and green laser beams and see how the laser beam behaves. The second demonstration will be a mini-LED backlight module equipped with our diffuser film. Compare with no diffuser film.
IDEMO-15 “Otogi Box ”: A Cubic Haptic Interface to Tell a Story in Your Hands
Makiko Azuma1
1. Japan Broadcasting Corporation (Japan)
Related IDW ’ 23 paper: VHF1-1
  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. The “Otogi Box” is a palm-sized cubic haptic interface that can be grasped with both hands and has a mechanism for vibrating each face independently. Our proposed method allows three-dimensional changes in the location where tactile stimuli are presented through the “Otogi Box” and tells a story through tactile communication.
IDEMO-16 Gamut Rings Color Scope
Kenichiro Masaoka1
1. NHK Foundation/NHK Science & Technology Research Laboratories (Japan)
Related IDW ’ 23 paper: FMC11-3L
  A new gamut rings color scope provides a means to simultaneously visualize the distribution of lightness, chroma, and hue attributes in a single 2D diagram, unlike traditional CIE chromaticity scopes and vector scopes. In the field of video production, the perceptually intuitive visualization is expected to facilitate more efficient and effective color grading with smoother communication between colorists and directors. With further development of wide gamut display technologies and effective production, I hope that the advantages of wide gamut displays will be better understood by the market as well.
IDEMO-17 Invited Enhancing Audiovisual Experience with Realistic Vibration Feedback Based on the Human Perceptual Intensity Generated from Sound Sources
Ryoma Akai1, Masashi Konyo1
1. Tohoku University (Japan)
Related IDW ’ 23 paper: INP5-1
  We demonstrate a novel realistic vibration feedback that can be used with a small LRA-type transducer to deliver enhanced audio-visual experiences. Realistic vibration stimuli are generated using Intensity Segment Modulation (ISM), a method that generates vibrotactile signals based on the perceptual intensity from acoustic signals, including high-frequency signals. ISM generated vibration waveforms can be presented via the iPhone's standard API, and can be synchronized with video. We also demonstrate a system that automatically generates a haptic experience using sound effects automatically generated from human movements.
IDEMO-18 Strechable Display Technologies for Future Immersive Content Experiences
Masashi Miyakawa1, Hiroshi Tsuji1, Toshihiro Yamamoto2, Yoshihide Fujisaki1, Mitsuru Nakata1
1. NHK Science & Technology Research Laboratories (Japan), 2. NHK Foundation (Japan)
Related IDW ’ 23 paper: FLX3-3L
  We have developed highly stretchable deformable LED displays with up to 40% strain using mini- or micro-LEDs for future immersive dome-style displays and wearable display applications. LED pixels are connected with stretchable conductive wiring that can expand and contract freely, so it can be formed into different shapes, such as a dome, or wearable displays to show images on the skin. Stretchable displays that can be deformed into different shapes, allowing users to enjoy realistic and immersive content anytime and anywhere.
IDEMO-19 Eye-Tracking 3D Display Using Improved Inertial Sensor Information
Hisayuki Sasaki1, Naoto Okaichi1, Hayato Watanabe1
1. NHK (Japan)
Related IDW ’ 23 paper: 3DSA3/3D3-2
  Eye tracking technology is often used to expand the viewing angle of 3D displays. However, when eye-tracking is compromised in 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 for mobile 3D display. Participants of this demonstration will be able to experience a more natural viewing angle expansion effect with eye tracking on a mobile light field 3D display compared to traditional ones.
IDEMO-20 Scrolling Display to Complement Pixel Gap
Daichi Tasaki1, Shiro Suyama1, Hirotsugu Yamamoto1
1. Utsunomiya University (Japan)
Related IDW ’ 23 paper: FMCp3-3
  We demonstrate interpolation of pixel information in non-illuminated areas of LED display by subjective super-resolution of scrolling of aerial image in AIRR (Aerial Imaging by Retro-Reflection). AIRR consists of a retroreflector, beam splitter, and light source, and in this demonstration, an LED panel is used as the light source.In this demonstration, the observer is able to understand the subjective interpolation of displayed content due to the brain interpolation effect caused by scrolling even when the pixel gap of the LED panel is somewhat large. 
IDEMO-21 Inspection System for Micro LED Based on Photoluminescence Technique
Yoshiyuki Yokoyama1, Hirohiko Watanabe1
1. Hamamatsu Photonics K.K. (Japan)
Related IDW ’ 23 paper: FMCp3-9L
  We will demonstrate a system that inspects photoluminescence (PL) wavelength and intensity of micro LED chips over an entire wafer based on PL technique. The PL inspection system is set up in our laboratory and the real-time demonstration can be performed on-line. The obtained data will be shown on the display at the hall and can be analyzed at the hall. We will show how many micro LED chips can be inspected in a short time by our PL inspection system.
IDEMO-22 Invited Ultrasonic-Enabled Automotive-Grade Haptic Display
Matthieu Rupin1
1. hap2U (France)
Related IDW ’ 23 paper: INP6-3L
  A 12.3” LCD display for the automotive market has been designed to produce tactile feedback thanks to ultrasonic lubrication effects at any points of the display surface. This was made possible thanks to patented piezoelectric actuators and unique know-how in ultrasonic wave propagation. To experience the potential of so-called surface haptics to transform future car's interiors, a dedicated HMI has been implemented that relies on tactile feedback. This advanced prototype has been improved in terms of cost and is ready to be integrated in cars.

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December 8
10:00-14:00, Exhibition Hall B
IDEMO-23 Fully Transparent RGB Emissive Screen for Naked-Eye Vehicle AR display Applications
Ted Sun1
1. Sun Innovations Inc. (USA)
Related IDW ’ 23 paper: MVS2/PRJ6-2
  We will demonstrate the 1st fully transparent, full color emissive display screen, which promises to convert any glass window and windshield of buildings and vehicles to a haze-free, optic-clear digital display, with unlimited viewing angles and field of view. The same technology platform also support the 1st  RGB emissive projection display on a pitch-black nano-phosphor screen with superior image contrast and color gamut in bright ambient light. 
IDEMO-24 2D-Backlight Module Local Dimming Demo & 14inch Prototype Sample
Ryoji Yoshimura1, Hajime Akimoto1, Kohei Suzaki1
1. Nichia Corporation (Japan)
Related IDW ’ 23 paper: FMC4-1
  This is a demonstration of our 2D backlight system introduced in the paper.  One is you can experience the local dimming technology that partially drives the backlight according to the LCD image. The same 2D backlight is installed in the module that projects the liquid crystal image, therefore you can see the appearance and the good contrast of the actual completed Mini LED liquid crystal module.  The other is a 14-inch mechanical sample.  You can touch it and feel the thinness, lightness, and flexibility introduced in the paper.
IDEMO-25 Invited Demonstration of Double Path Pancake Optics for HMD
Takehisa Yoshida1
1. Sharp Display Technology Corporation (Japan)
Related IDW ’ 23 paper: LCT7/FMC7-2
  We proposed novel pancake-based optics for HMD named ‘Double path pancake optics’ to achieve both compactness and high light efficiency simultaneously. We will demonstrate the double path pancake optics prototype. The prototype consists of double path pancake optical module and 1200ppi resolution LCD. Thickness is 25.5mm and light efficiency is 1.8 times higher compared to conventional one. This demo shows the compact design and high-image quality.
IDEMO-26 3D Glasses Using Aspherical Phase Plates for Endoscopic Surgery
Kotomi Takatsu1
1. Tokyo University of Agriculture and Technology (Japan)
Related IDW ’ 23 paper: 3D4/3DSA4-2
  We will demonstrate specialized 3D glasses using aspherical phase plates for stereoscopic endoscopic surgeries. The 3D glasses consist of commercial 3D shields and aspherical phase plates. A center circular region of the phase plates has a third-order aspherical shape reducing visual fatigue and a peripheral region of that has constant refractive power. Surgeons view 3D monitors for endoscopic surgery with the 3D glasses. You can experience the developed 3D glasses for endoscopic surgeries using aspherical phase plates.
IDEMO-27 Laser-Like Light Emission from Organic Semiconductor Electroluminescent Device
Ahmed Mohammed1, Fatima Bencheikh1, Yoko Fukunaga1
1. Koala Tech Inc. (Japan)
Related IDW ’ 23 paper: OLED4-4L
  This demonstration showcases our cutting-edge organic semiconductor electroluminescent device, which generates laser-like light. Operating within the blue spectral region, it emits light with a peak wavelength of 450 nm, showing an impressively narrow spectral FWHM of 2 nm and a narrow divergence angle of 3°. The demo system includes the device, power supply, and a spectrophotometer (Figure 1a). Figures 1b and 1c illustrate the device and its blue light emission. This system is the world's first demonstration of simultaneously achieving a very narrow emission spectrum and high directionality in an organic electroluminescent device.
IDEMO-28 Multi-Projection 3D Display with Background Transparency for Augmented Reality
Sei Sato1, Kengo Fujii1, Tomohiro Yendo1
1. Nagaoka University of Technology (Japan)
Related IDW ’ 23 paper: 3D4/3DSA4-4
  We will demonstrate a multi-projection 3D display with background transparency for augmented reality. The demonstration system consists of a projector array and a concave screen. The screen has an alternating structure of the background-transmitting and the diffuse reflecting parts. This allows the real object and the stereoscopic image to be observed simultaneously. By projecting images from each projector onto each viewpoint, different parallax images are observed at each viewpoint. This display is visible to the naked eye. Our system achieves background transparency in conventional multi-projection 3D displays.
IDEMO-29 Electronic Tile as an Energy Saving Reflective Display Component
Makoto Omodani1, Hiroyuki Yaguchi1
1. Tokyo Denki University (Japan)
Related IDW ’ 23 paper: FMC6-2
  Application of Electronic Paper is now expected to expand from document displays to wall decoration and ornaments for interior/exterior. We have developed Electronic Tile (e-Tile) for these extended applications. A prototype of wall display model of 2 x 2 m size has already been realized but too large for I-DEMO. This time, we will demonstrate prototypes of cubic displays realized by constructing e-Tiles to cube shapes. Artistic display effects and 3D impression could be found in these prototypes. We hope e-Tile is a promising solution to extend the application field of e-Paper to decorative uses including architectural applications.
IDEMO-30 Real-time 3D Video Communication System using Stereo Video Capture and Autostereoscopic Display
Kyosuke Yanagida1, Takafumi Koike1,2, Goro Hamagishi2,3 , Hideya Takahashi2,3
1. Hosei University (Japan), 2. RealImage Inc. (Japan), 3. Osaka Metropolitan University (Japan)
Related IDW ’ 23 paper: 3DSAp1-6
  We have developed a high-quality and stable autostereoscopic 3D live system with the simplest configuration of stereo capture and a binocular autostereoscopic 3D display.We demonstrate live autostereoscopic 3D with real-time stereo capturing at the I-Demo venue. The system uses a parallax barrier display with viewpoint tracking to provide an extensive viewing range in depth and horizontal directions, giving the viewer the sensation of observing the real world. In addition, many video contents optimized for stereoscopic viewing are available so that the contents can be expressed and experienced more dynamically.
IDEMO-31 Scalable Active-Matrix Flexible Mini-LED Displays with Organic Single-Crystal TFTs
Jun Takeya1
1. University of Tokyo, Organo-circuit (Japan)
Related IDW ’ 23 paper: FLX3-2
  To meet growing demands of large-area digital signage devices in various situations for advertisement, social events, entertainment and public announcement, more light-weight and low-cost devices are desired than existing passive LED displays. 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.

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