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41.02 Information Display(IDY)
Displaying 1-20 of 20 articles from this issue
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Pages Cover1-
Published: 2017
Released on J-STAGE: April 02, 2021
CONFERENCE PROCEEDINGS FREE ACCESSDownload PDF (111K) -
Pages Cover2-
Published: 2017
Released on J-STAGE: April 02, 2021
CONFERENCE PROCEEDINGS FREE ACCESSDownload PDF (200K) -
Youkou AWATA, Haruki MIZUSHINA, Shiro SUYAMASession ID: IDY2017-1
Published: 2017
Released on J-STAGE: April 02, 2021
CONFERENCE PROCEEDINGS FREE ACCESSEven when one eye’s visual acuity is decreased for simulating anisometropia, perceived depth degradation of arc 3D display is much less than that of stereoscopic display. In stereoscopic display, perceived depth is quickly degraded when visual acuity is decreased around 0.2 and depth cannot be perceived at visual acuity of 0.1. On the other hand, in arc 3D display, perceived depth has little degradation around visual acuity of 0.1 and depth can be perceived even at visual acuity of 0.01. Thus, the small degradation of perceived depth by decreasing visual acuity in arc 3D display indicates that smooth motion parallax would sustain perceived depth of anisometropia.View full abstractDownload PDF (768K) -
Naoto FUJIWARA, Haruki MIZUSHINA, Shiro SUYAMASession ID: IDY2017-2
Published: 2017
Released on J-STAGE: April 02, 2021
CONFERENCE PROCEEDINGS FREE ACCESSBy estimating angular distributions of directional scattering in liquid-crystal (LC) devices for Arc 3D display, angular distributions are confirmed to be controlled by tip shapes of LC prisms. In order to obtain design guideline for LC devices, estimated angular distributions of directional scattering with tip shapes of 35 degrees by changing input direction and LC device slope have the same tendency to calculation results.View full abstractDownload PDF (886K) -
Kazuki YOSHIOKA, Shingo NISHIYAMA, Haruki MIZUSHINA, Shiro SUYAMASession ID: IDY2017-3
Published: 2017
Released on J-STAGE: April 02, 2021
CONFERENCE PROCEEDINGS FREE ACCESSWe have proposed a new method to enlarge the horizontal viewing zone in Arc DFD display and confirmed its principle. In order to enlarge the horizontal viewing zone in Arc DFD display, arc 3D display used for the front or rear plane in Arc DFD display is modified to multi-view type by shifting and superimposing of short arc-shape scratches. We can successfully confirm its principle that the high blight spots can be observed at the same horizontal position, even when the observer moves in the horizontal direction. Thus, “Arc DFD display” can be expected as a new 3D display device which can have a wide horizontal viewing zone as with the vertical direction.View full abstractDownload PDF (821K) -
Ryosuke OZAKI, Hirotsugu YAMAMOTO, Haruki MIZUSHINA, Shiro SUYAMASession ID: IDY2017-4
Published: 2017
Released on J-STAGE: April 02, 2021
CONFERENCE PROCEEDINGS FREE ACCESSFlat and thin autostereoscopic display with all surrounding viewpoints can be successfully obtained by using arc 3D display as a new directional backlight of radial parallax barrier method. Autostereoscopic images can be changed continuously corresponding to surrounding viewpoints change by applying fractional view method, although undesired neighborhood images were observed. In this paper, all surrounding viewpoints can be successfully achieved by suppressing undesired neighborhood ghost images by using arc 3D display as a new directional backlight.View full abstractDownload PDF (1173K) -
Shingo NISHIYAMA, Haruki MIZUSHINA, Shiro SUYAMASession ID: IDY2017-5
Published: 2017
Released on J-STAGE: April 02, 2021
CONFERENCE PROCEEDINGS FREE ACCESSWe have proposed subpixel structure consisting of multiple slope arcs for the moving Arc 3D images and clarified that the influence of the arc discontinuity by subpixel structure on perceived depth can be suppressed by decreasing pixel pitches. When the interval between broken lines is from 2.0 mm to 1.0 mm, perceived depth is degraded. On the other hand, at the broken line interval of 0.5 mm, good perceived depth dependence can be obtained. Thus, the appropriate subpixel pitches for subpixel structure in arc 3D display are clarified to be less than 0.5 mm.View full abstractDownload PDF (673K) -
Hayato OZEKI, Kousuke OBAYASHI, Yasufumi IIMURASession ID: IDY2017-6
Published: 2017
Released on J-STAGE: April 02, 2021
CONFERENCE PROCEEDINGS FREE ACCESSCurrently, IPS and FFS display modes are known to show extremely-high quality images due to an in-plane motion of LC molecules in the display modes. For realizing further high-quality images, the application of a Photo-Alignment (PA) method to these display modes has been extensively studied so far. The weak surface anchoring nature of the PA method comparing to a conventional rubbing method, however, impedes a wide usage into the LCD production process. The purpose of this study is to improve the weak anchoring nature in the PA method by using a Polymer-Surface-Stabilized (PSS) method. We demonstrate the proposed method to improve the weak anchoring nature in the PA method resulting in low image sticking by showing experimental results doing under various conditions of sample fabrication.View full abstractDownload PDF (777K) -
Sho Onose, Hirotsugu YamamotoSession ID: IDY2017-7
Published: 2017
Released on J-STAGE: April 02, 2021
CONFERENCE PROCEEDINGS FREE ACCESSAn omnidirectional aerial image is formed on the entire circumference of the observing area with aerial imaging by retro-reflection (AIRR), which employs a cone-shaped retro-reflector. In this paper, we report directivity control of the light source which hinders the observation in the conventional method by limiting the viewing angle of the display with the louver filter.View full abstractDownload PDF (885K) -
Tomoyuki Okamoto, Tomofumi Kobori, Sho Onose, Kenta Onuki, Hitomi Hori ...Session ID: IDY2017-8
Published: 2017
Released on J-STAGE: April 02, 2021
CONFERENCE PROCEEDINGS FREE ACCESSWe have developed aerial display with thermal sensation. Our developed display forms aerial visual images over a table top with aerial imaging by retro-reflection (AIRR) and locally heats the air by use of double-layered arrays of rectangular mirror (WARM). We have succeeded in forming an aerial image that gives warmth when it is touched. We have downsized our AIRR-WARM display.View full abstractDownload PDF (865K) -
Kenta Onuki, Tomofumi Kobori, Hitomi Horie, Kengo Fujii, Masao Nakajim ...Session ID: IDY2017-9
Published: 2017
Released on J-STAGE: April 02, 2021
CONFERENCE PROCEEDINGS FREE ACCESSIn recent years, aerial display has been attracting attention. Aerial imaging by retro-reflection (AIRR) has been proposed to form an aerial information screen. In order to improve the brightness and contrast of the aerial image, reflective polarizer and polarization-modulation film have been introduced to AIRR. It is important for polarization-modulation AIRR (p-AIRR) to use a retro-reflector that performs high reflectance and high polarization-maintenance rate. The purpose of this paper is to select a retro-reflector that is suitable for p-AIRR. We have constructed a measurement system of reflectance of a retro-reflector. This paper reports reflectance characteristics of a variety of state-of-art retroreflectors. We have also constructed optical setups to measure the polarization-maintenance rate of retro-reflector. Then, we have investigated dependences of the reflectance and the polarization-maintenance rate on the incident angles, including rotation and tilt.View full abstractDownload PDF (879K) -
Tomofumi Kobori, Tomoyuki Okamoto, Kenta Onuki, Sho Onose, Hirotsugu Y ...Session ID: IDY2017-10
Published: 2017
Released on J-STAGE: April 02, 2021
CONFERENCE PROCEEDINGS FREE ACCESSLuminance problem occurs when we form an aerial image perpendicular to a table top. This research’s objective is to propose a solution to the luminance problem on forming a perpendicular aerial image. Such aerial image has an advantage for conventional method: observers concentrate the aerial image because observers cannot see the source display under the table top. Aerial imaging by retro-reflection (AIRR) is used to realize aerial display in this paper. Our solution uses a prism sheet. The prism sheet is installed on the display surface. Furthermore, we analyze various prism sheet. In addition, we propose a method to form two aerial images those are floating over both sides of the display equipment.View full abstractDownload PDF (982K) -
Tatsuhiko EGUCHI, Haruki MIZUSHINA, Shiro SUYAMASession ID: IDY2017-11
Published: 2017
Released on J-STAGE: April 02, 2021
CONFERENCE PROCEEDINGS FREE ACCESSMonocular perceived depth and image shift smoothness can be improved in “Layered multi-view DFD (Depth-fused 3D) display”, when front and rear displays have a large and appropriate gap, even at small number of multi views. As layered multi-view DFD (Depth-fused 3D) display has a feature that various kinds of parallax components are mixed at the view positions, good monocular depth perception and smooth image shift by head movement can be obtained, even when the number of multi views is decreased.View full abstractDownload PDF (783K) -
Kazuya OKO, Haruki MIZUSHINA, Shiro SUYAMASession ID: IDY2017-12
Published: 2017
Released on J-STAGE: April 02, 2021
CONFERENCE PROCEEDINGS FREE ACCESSBy changing the head movement periods, we clarified that perceived depths from monocular motion parallax have the clear differences. The monocular perceived depths by changing head movement periods and widths were estimated in active head movement and passive head movement. In spite of different head movement widths of 15 cm and 5 cm, best depth dependency can be obtained at movement period of 2.0 seconds. This indicates that influence of head movement period to monocular perceived depth is larger than that of head movement speed, and that the time interval of switching the direction of motion of the stimulus affects the monocular depth perception.View full abstractDownload PDF (743K) -
Yoshifumi SEKIGUCHI, Souichirou SEO, Yosei SHIBATA, Takahiro ISHINABE, ...Session ID: IDY2017-13
Published: 2017
Released on J-STAGE: April 02, 2021
CONFERENCE PROCEEDINGS FREE ACCESSA high transmission and wide-angle light diffusing film for a liquid crystal display device are required. We proposed the light diffusing film including alternate polymer layer structure which diffracts light at large angles. However, the evaluation method of the refractive index distribution (RID) and analysis method of optical property do not exist. Therefore, the basic mechanism that the scattering distribution (SD) is trapezoid was not clear. In this report, we developed the noise reduction method of the reflection light distribution measured by a laser confocal microscope for using it as the RID and the evaluated RID clarified the RID was composed of several periodic structures with different amplitudes. Therefore, we extracted the periodic structures with the large amplitude and analyzed the SDs of the extracted structures on the basis of rigorous coupled-wave analysis. It was revealed that the main reason to form the trapezoidal SD was a first order diffracted light and the existence of plural periodic structures formed the constant intensity of the SD within a certain angle range.View full abstractDownload PDF (606K) -
Seiya KAWAMORITA, Yosei SHIBATA, Takahiro ISHINABE, Hideo FUJIKAKESession ID: IDY2017-14
Published: 2017
Released on J-STAGE: April 02, 2021
CONFERENCE PROCEEDINGS FREE ACCESSTo realize the flexible liquid crystal displays, it is necessary to sustain the cell thickness in a curved state. For this reason, the formation method of polymer wall using photopolymerization by a patterned UV exposure through the photomask is proposed. However, in this method, remained monomer in the pixel degrades the electro-optical characteristics. To overcome the issue, we proposed a novel technique of morphological control of monomer utilizing wettability on substrate and change of LC/monomer solubility by temperature. In this sturdy, we examined the influence on monomer aggregation into a lattice-like form by substrate surface materials. As a result, we showed that morphological control of LC/monomer is possible on surface-patterned fluororesin and polyimide.View full abstractDownload PDF (1156K) -
Takenobu USUI, Takuya OKADA, Yoshimichi TAKANO, Toshihiro YAMAMOTOSession ID: IDY2017-15
Published: 2017
Released on J-STAGE: April 02, 2021
CONFERENCE PROCEEDINGS FREE ACCESSTiled-displays by arranging organic light-emitting diodes (OLED) displays have been developing, to realize large-size and high-resolution OLED displays. In OLED displays, there is a delay for a frame time between reproducing timing of first horizontal line and that of last horizontal line. Because of this delay, an image distortion was occurred at the joints of tiled displays. Hence, we proposed a novel driving method to suppress this image distortion for OLED displays.View full abstractDownload PDF (573K) -
Tsubasa SASAKI, Hirohiko FUKAGAWA, Takahisa SHIMIZU, Yoshihide FUJISAK ...Session ID: IDY2017-16
Published: 2017
Released on J-STAGE: April 02, 2021
CONFERENCE PROCEEDINGS FREE ACCESSWe are researching air-stable inverted organic light-emitting diodes (IOLEDs) to demonstrate flexible displays. To fabricate IOLEDs on plastic film substrate, we developed the low-temperature process of an electron injection layer (EIL). We demonstrated the IOLED having a long lifetime by using inorganic-organic hybrid material in the EIL, which is formed at low temperature of 120℃.View full abstractDownload PDF (482K) -
Peep PODDER, Yaxin CAO, Takatoshi SETO, Yuhua WANGSession ID: IDY2017-17
Published: 2017
Released on J-STAGE: April 02, 2021
CONFERENCE PROCEEDINGS FREE ACCESSWe tried to decrease the size of the particles of (Ba,Sr)2SiO4:Eu with keeping brightness, which had been known as a candidate of green phosphor for LED. We found that all of raw materials, BaCO3, SrCO3, SiO2, and Eu2O3 having the particles of submicron size provide (Ba,Sr)2SiO4:Eu having relatively equal size of 1-3 μm of primary particles and external quantum efficiency of near 50% at the calcination temperature of 1000℃ about 200℃ lower than conventional calcination temperature. It was clarified that especially, nano-sized Eu2O3 and SiO2 yield large effect for microparticulation with high brightness.View full abstractDownload PDF (1079K) -
Pages 113-
Published: 2017
Released on J-STAGE: April 02, 2021
CONFERENCE PROCEEDINGS FREE ACCESSDownload PDF (131K)
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