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Article type: Cover
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Published: July 24, 2008
Released on J-STAGE: September 20, 2017
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Article type: Index
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Published: July 24, 2008
Released on J-STAGE: September 20, 2017
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Takahiko FUKINUKI, Hitoshi KIYA
Article type: Article
Session ID: IDY2008-72
Published: July 24, 2008
Released on J-STAGE: September 20, 2017
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De-blurring in moving areas on hold-type displays, such as LCDs, is studied, taking it into consideration that a TV signal is a sampled one in the temporal domain, and the blur is due to aperture effect. To realize it, compensation by a non-recursive frame-to-frame filter with a constant parameter is proposed. Simulation makes it clear the blur is reduced.
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Akihiro NAGASE, Noritaka OKUDA, Jun SOMEYA, Kunifumi NAKANISHI, Hiroak ...
Article type: Article
Session ID: IDY2008-73
Published: July 24, 2008
Released on J-STAGE: September 20, 2017
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We have developed a high compression feed-forward driving (hcFFD) algorithm for 1/6 compressed image overdrive. This paper reports the technology of hcFFD2 integrated into a single LSI to store the compressed image into SRAM based frame memory, in which the circuit has been simplified through a review of the algorithm.
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Naoya KUBOTA, Midori TSUKANE, Tetsuo FUKAMI, Tetsuya KOJIMA, Kenji NAK ...
Article type: Article
Session ID: IDY2008-74
Published: July 24, 2008
Released on J-STAGE: September 20, 2017
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Display devices especially for automobile-use need motion visibility at any situation for secure safety. However, at low temperature, general LCDs have problems of motion blur due to slowdown of response characteristics. To solve the problem we have newly developed high performance OCB-LCD with fast response at low temperature. This is accomplished by use of low rotational viscosity LC material and improvement bend transition. The new OCB-LCD achieves to keep very fast response time and bend transition. The response time is 1/3 of conventional OCB-LCD at -20℃ without changing present optical design and the bend transition time is about 1 second at -30℃. This performance is suitable for automobile-use.
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Yuichi KUSAKABE, Masaru KANAZAWA, Yuji NOJIRI
Article type: Article
Session ID: IDY2008-75
Published: July 24, 2008
Released on J-STAGE: September 20, 2017
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We are investigating a high dynamic range projector that features double modulation. We already developed a prototype projector with 4096×2160 pixels and demonstrated its extremely high dynamic range of about 1-million to 1. This projector has two modulation blocks. Light output from a lamp is first modulated by a chrominance signal in the first modulation block. After that, the light is further modulated by a luminance signal in the second modulation block and projected. We measured three kinds of MTF data of the projector to evaluate its resolution characteristics, i.e., the MTF for the total projector system, the MTF for the first modulation block, and the MTF for the second modulation block. This projector can display images so that the resolution of the luminance component is retained with the resolution of the chrominance component degraded, because the modulation in the projector is separated into the chrominance modulation and the luminance modulation. We conducted subjective assessment to research the effect of the resolution of the chrominance component on the total image quality. We confirmed that viewers did not notice the image degradation when the resolution of the chrominance component was degraded to a half and noticed the degradation when it was degraded to about a quarter.
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Yuka UTSUMI
Article type: Article
Session ID: IDY2008-76
Published: July 24, 2008
Released on J-STAGE: September 20, 2017
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The degree of imperfection was defined as the independent intrinsic index of the degree of degraded contrast ratio for each component material to analyze the light leakage in the black state. We clarified that color filters and liquid crystal layers drastically degrade the contrast ratio because of the light leakage caused by their scattered light. The direct observation of color filters by using STEM and the scattering index of liquid crystal layer gives the effective guidelines for reducing light leakage intensity. By using these guidelines, we have made an IPS-Pro LCD with the contrast ratio of 1500:1.
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Ryuji Tsuchiya, Yoji Kawasaki, Junichi Kinoshita
Article type: Article
Session ID: IDY2008-77
Published: July 24, 2008
Released on J-STAGE: September 20, 2017
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LED backlights for LCD have many advantages against CCFL backlights. For example, better color reproducibility, longer life, higher efficiency, less power consumption, and Hg-free green product. Here we present the "hollow cavity" side-lit LED backlight unit. It is categorized as the third type of LED backlights. The hollow-cavity structure consists of a pair of LED/collimator units, a white bottom reflector and a top diffuser. We can provide a lightweight LED backlight unit because it does not have any light-guiding plates inside. A simple design-rule of the hollow-cavity backlight is formulated for the first time. The performance of 21" LED backlight unit fabricated based on this formulation is also presented.
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Ryo Harada, Naoko Sawatari, Makoto Ishikawa, Masato Okabe
Article type: Article
Session ID: IDY2008-78
Published: July 24, 2008
Released on J-STAGE: September 20, 2017
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Katsuyuki Motai, Yasunori Naitou, Masaru Kadowaki, Yoji Iwamoto, Koji ...
Article type: Article
Session ID: IDY2008-79
Published: July 24, 2008
Released on J-STAGE: September 20, 2017
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A novel flexible field-sequential-color FLCD panel driven by poly-Si TFTs has been developed. A 16×16 active matrix panel was fabricated using polymer stabilized FLC and poly-Si TFTs fabricated onto plastic substrate below 150℃, and colored moving images were demonstrated on the panel with frame frequency of 60Hz.
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Hiroyuki Honda, Hironori Kobayashi, Masanao Matsuoka, Ken Tomino, Mits ...
Article type: Article
Session ID: IDY2008-80
Published: July 24, 2008
Released on J-STAGE: September 20, 2017
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We are developing large area flexible Organic-TFT (OTFT) array. Distortion of film substrate due to the thermal process is a critical issue. So, we have developed new technique on controlling the distortion within 30ppm, and fabricated OTFT array with printing process. As a result, we have succeeded in active matrix drive of QR-LPD with the use of printed OTFT array.
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Giichiro UCHIDA, Hiroshi KAJIYAMA, Tsutae SHINODA
Article type: Article
Session ID: IDY2008-81
Published: July 24, 2008
Released on J-STAGE: September 20, 2017
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Here is presented the measurements on SrO-PDP operated at lower voltage. The SrO-panel shows the lower breakdown voltage, the high luminous efficacy, and the stable discharge compared with MgO-panel for the Xe concentration of 4 %. The optical emission spectroscopy is also performed to analyze the electron energy. The measurement shows SrO-cathode discharge has lower electron energy due to the lower operation voltage.
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Masaki KITAGAKI, Giichiro UCHIDA, Tsutae SHINODA, Hiroshi KAJIYAMA
Article type: Article
Session ID: IDY2008-82
Published: July 24, 2008
Released on J-STAGE: September 20, 2017
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MgO based protective layers with finite secondary electron emission coefficient by Xe^+, γ(Xe), are synthesized and their effect on firing voltage is measured in AC-PDPs. It is measured that the slight increase of γ(Xe) by an order of 0.01 reduces the firing voltage and that the reduction becomes larger at higher Xe content.
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Article type: Appendix
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Published: July 24, 2008
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Article type: Appendix
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Published: July 24, 2008
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Article type: Appendix
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Published: July 24, 2008
Released on J-STAGE: September 20, 2017
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