Patents Assigned to Display Technologies
  • Patent number: 6839104
    Abstract: A common electrode substrate has a transparent insulating substrate to be arranged opposite to an array substrate having pixel electrodes formed in respective pixel regions that are defined by a plurality of gate bus lines and drain bus lines. The substrate holds a liquid crystal having negative dielectric anisotropy. A common electrode is formed on the transparent insulating substrate; alignment regulating structures having linear protrusions are formed on the common electrode; and a light shield film is formed on the transparent insulating substrate with overlap regions that overlap the pixel electrodes when viewed in the direction perpendicular to a surface of the transparent insulating substrate, so as to shield, from light, alignment defective regions of the liquid crystal formed in regions of end portions of the pixel electrodes.
    Type: Grant
    Filed: August 6, 2001
    Date of Patent: January 4, 2005
    Assignee: Fujitsu Display Technologies Corporation
    Inventors: Yoji Taniguchi, Hiroyasu Inoue
  • Patent number: 6839118
    Abstract: The invention relates to a substrate for a liquid crystal display used as a display of an information apparatus, a liquid crystal display having the same, and a method of manufacturing the same and provides a substrate for a liquid crystal display on which the position of a defect can be easily detected to achieve high display quality, a liquid crystal display having the same, and a method of manufacturing the same.
    Type: Grant
    Filed: January 17, 2003
    Date of Patent: January 4, 2005
    Assignee: Fujitsu Display Technologies Corporation
    Inventor: Kenichi Nagaoka
  • Publication number: 20040263719
    Abstract: When radiating light onto a liquid crystal composition containing a photosensitive material, the alignment of liquid crystal molecules is adjusted by applying a voltage to the liquid crystal composition layer, to achieve substantially orderly alignment of the liquid crystal molecules, or the alignment of the liquid crystal molecules is made uniform by adjusting the structure of the liquid crystal display device, or any display defect is driven out of the display area. When radiating light to the liquid crystal composition containing the photosensitive material, the alignment of the liquid crystal molecules can be adjusted so as to achieve substantially orderly alignment of the liquid crystal molecules, and the liquid crystal display device can thus be driven stably.
    Type: Application
    Filed: July 16, 2004
    Publication date: December 30, 2004
    Applicant: FUJITSU DISPLAY TECHNOLOGIES CORPORATION
    Inventors: Hiroyasu Inoue, Yuji Nakahata, Yoji Taniguchi
  • Patent number: 6835803
    Abstract: A method for forming a conjugated polymer which is doped by a dopant includes the steps of (a) adding a doping agent comprising a dopant moiety to a solution containing the conjugated polymer or a precursor thereof and, optionally, a second polymer, the dopant moiety being capable of bonding to the conjugated polymer, precursor thereof or the second polymer; (b) allowing the dopant moiety to bond to the conjugated polymer, precursor thereof or the second polymer to perform doping of the conjugated polymer, wherein the amount of doping agent added in step (a) is less than the amount required to form a fully doped conjugated polymer.
    Type: Grant
    Filed: February 19, 2002
    Date of Patent: December 28, 2004
    Assignee: Cambridge Display Technology Ltd.
    Inventors: Peter Kian-Hoon Ho, Ji-Seon Kim, Richard Henry Friend
  • Patent number: 6836308
    Abstract: A liquid crystal display device capable of obtaining high luminance and good display characteristics, a substrate for such a liquid crystal display device, and a manufacturing method of such a substrate, are provided. A color filter substrate holds, together with an array substrate, a liquid crystal having negative dielectric anisotropy. Color filters are formed on a glass substrate and a common electrode is formed on the color filters. Protrusions and auxiliary protrusions for regulating the alignment of the liquid crystal are formed on the common electrode so as to have different sectional shapes.
    Type: Grant
    Filed: August 16, 2001
    Date of Patent: December 28, 2004
    Assignee: Fujitsu Display Technologies Corporation
    Inventors: Manabu Sawasaki, Takashi Takagi, Tomonori Tanose
  • Publication number: 20040259530
    Abstract: Mobile phone 1 is provided with personal authentication device 13 arranged on outer side portion 11 of mobile phone 1 when folded. When finger F touches a predetermined surface of personal authentication device 13 with mobile phone 1 folded, personal authentication device 13 starts authentication as to whether or not a fingerprint of finger F is consistent with one of its registered fingerprints. Such authentication can be easily carried out with personal authentication device 13 even though mobile phone 1 remains folded and no keys on operation panel 7 are manipulated. Thus, it improves security for information and data stored in a memory of mobile phone 1.
    Type: Application
    Filed: June 18, 2004
    Publication date: December 23, 2004
    Applicant: Toshiba Matsushita Display Technology Co., Ltd.
    Inventors: Shuichiro Ishizawa, Masaki Kinoshita
  • Publication number: 20040257506
    Abstract: A liquid crystal display device of the present invention is composed of a &lgr;/4 plate 1, a &lgr;/2 plate 2, and a polarizing plate 3 which are provided in this order from the side of a liquid crystal layer 10. Here, an angle formed between an absorption axis of the polarizing plate 3 and an absorption axis of the &lgr;/2 plate 2 is about 45°, an in-plane retardation of the &lgr;/2 plate 2 is set to a value obtained by adding &lgr;/4 to an in-plane retardation of a retardation plate 1, desirably, the &lgr;/4 plate 1, and an optical axis of the &lgr;/4 plate 1 and an optical axis of the &lgr;/2 plate 2 are orthogonal to each other. In this configuration, the optical axis of the &lgr;/4 plate 1 is placed at 150°, the optical axis of the &lgr;/2 plate 2 is placed at 60°, and the absorption axis of the polarizing plate 3 is placed at 15°.
    Type: Application
    Filed: November 17, 2003
    Publication date: December 23, 2004
    Applicant: FUJITSU DISPLAY TECHNOLOGIES CORPORATION
    Inventors: Kunihiro Tashiro, Katsufumi Ohmuro, Norio Sugiura, Hidefumi Yoshida
  • Patent number: 6833886
    Abstract: Since the drive data for display or their correction values are stored in correspondence with the combination of the upper bits of the current frame image data and the upper bits of the previous frame image data, the capacity of the high-speed memory circuit that stores the conversion table can be reduced. Accompanying the reduction in the capacity of the conversion table, since the precision of the display drive data or their correction values becomes lower, an interpolation circuit is provided and, by means of an interpolation calculation the display, drive data or their correction values having increased precision is generated and consequently the input image data is corrected to generate the display drive data.
    Type: Grant
    Filed: March 8, 2002
    Date of Patent: December 21, 2004
    Assignee: Fujitsu Display Technologies Corporation
    Inventors: Toshiaki Suzuki, Koshu Yonemura, Katsuyoshi Hiraki, Hiroshi Yamazaki, Katsunori Tanaka
  • Publication number: 20040246406
    Abstract: When radiating light onto a liquid crystal composition containing a photosensitive material, the alignment of liquid crystal molecules is adjusted by applying a voltage to the liquid crystal composition layer, to achieve substantially orderly alignment of the liquid crystal molecules, or the alignment of the liquid crystal molecules is made uniform by adjusting the structure of the liquid crystal display device, or any display defect is driven out of the display area. When radiating light to the liquid crystal composition containing the photosensitive material, the alignment of the liquid crystal molecules can be adjusted so as to achieve substantially orderly alignment of the liquid crystal molecules, and the liquid crystal display device can thus be driven stably.
    Type: Application
    Filed: July 16, 2004
    Publication date: December 9, 2004
    Applicant: FUJITSU DISPLAY TECHNOLOGIES CORPORATION
    Inventors: Hiroyasu Inoue, Yuji Nakahata, Yoji Taniguchi
  • Publication number: 20040248020
    Abstract: An exposure mask which is capable of reducing non-uniformity in display by a liquid crystal display device. A mask pattern having pattern-forming portions and shield portions mosaically arranged therein is formed in one end portion of an exposure mask, and a mask pattern having pattern-forming portions and shield portions arranged in a manner complementary to the first-mentioned mask pattern is formed the other-end portion of the eposure mask. Further, the exposure mask is formed such that areas between vertically or laterally adjacent ones of the shield portions in mosaic areas where the pattern-forming portions and the shield portions are mosaically arranged are also shielded.
    Type: Application
    Filed: March 8, 2004
    Publication date: December 9, 2004
    Applicant: FUJITSU DISPLAY TECHNOLOGIES CORPORATION
    Inventors: Tetsuya Fujikawa, Yoshinori Tanaka
  • Publication number: 20040246423
    Abstract: A liquid crystal apparatus is provided wherein the liquid crystal layer comprises a section formed by polymerizing a polymerizable compound in the presence of a liquid crystal by selectively irradiating active energy rays onto the substrate surface when no voltage is applied, or alignment control layers and bumps are formed by polymerizing a polymerizable compound which is added to said liquid crystal, or first electrodes with a vertical alignment control film and a second electrode with a horizontal alignment control film face each other and alignment control of the liquid crystal is performed by irradiating light from a direction tilted from the normal line direction on said liquid crystal display apparatus. A liquid crystal display apparatus which can implement high transmittance, high-speed response and a wide viewing angle can be provided.
    Type: Application
    Filed: March 18, 2004
    Publication date: December 9, 2004
    Applicant: FUJITSU DISPLAY TECHNOLOGIES CORPORATION
    Inventors: Takashi Sasabayashi, Arihiro Takeda, Yoshio Koike, Takahiro Sasaki, Hidefumi Yoshida, Kazutaka Hanaoka
  • Publication number: 20040246424
    Abstract: The generation of residues or flakes of a color filter is suppressed to eliminate conduction failures on an LCD substrate having a color filter on an array substrate. A passivation film formed between a pixel electrode formed in each of a plurality of pixel regions and a TFT for driving the pixel electrode has a multi-layer structure constituted by SiN layers and a SiO layers, and the SiO layer is located at the top of the film. A resin CF layer is formed on the passivation film having such a multi-layer structure. Since the resin CF layer is formed directly on the SiO layer, reduction of the adhesion of the same is suppressed. As a result, the color filter is unlikely to come off when the resin CF layer is formed, and residues of the color filter is unlikely to be generated when a contact hole is formed in the resin CF layer. This suppresses conduction failures and makes it possible to provide a reliable TFT substrate and LCD having high display characteristics.
    Type: Application
    Filed: January 28, 2004
    Publication date: December 9, 2004
    Applicant: FUJITSU DISPLAY TECHNOLOGIES CORPORATION
    Inventors: Manabu Sawasaki, Tomonori Tanose, Katsunori Misaki
  • Patent number: 6828724
    Abstract: A light-emitting device comprising a first electroluminescent element for emitting light of a first color when energized and a second electroluminescent element for emitting light of a second color when energized, characterized in that dimensions of the first and second elements and any spacing therebetween are selected to create an overall impression of a single light source when simultaneously energized and viewed as intended.
    Type: Grant
    Filed: November 11, 2002
    Date of Patent: December 7, 2004
    Assignee: Cambridge Display Technology Limited
    Inventor: Jeremy Henley Burroughes
  • Publication number: 20040239698
    Abstract: This invention relates to an image processing method for improving the quality of an image to be displayed on a display device and to a liquid-crystal display device using the same, and aims at providing an image processing method for providing wide viewing angle and excellent tonal-intensity viewing angle characteristic and a liquid-crystal display device using the same. Combined together are a higher-luminance pixel to be driven higher in luminance than the luminance data of an image to be displayed and a lower-luminance pixel to be driven lower in luminance than the luminance data, to determine a luminance on the higher-luminance pixel and luminance on the lower-luminance pixel as well as an area ratio of the higher-luminance and lower-luminance pixels in a manner obtaining a luminance nearly equal to a desired luminance based on the luminance data.
    Type: Application
    Filed: March 30, 2004
    Publication date: December 2, 2004
    Applicant: FUJITSU DISPLAY TECHNOLOGIES CORPORATION
    Inventors: Tsuyoshi Kamada, Hidefumi Yoshida, Yoshio Koike, Toshiaki Suzuki, Tetsuya Kobayashi, Yasutoshi Tasaka, Masakazu Shibasaki, Kunihiro Tashiro, Kazuya Ueda, Katsuyoshi Hiraki
  • Publication number: 20040239840
    Abstract: A LCD panel is disclosed that provides improved performance of the frame area that surrounds the panel's display area. The frame area includes a transparent substrate, and color filters provided side-by-side on the transparent substrate, each of the color filters filtering one of at least two colors. The LCD panel is further constituted by a first electrode that counters the color filters, a second electrode that counters the first electrode, and liquid crystal that is inserted between the electrodes. Display spots are suppressed and the frame can appear in a desired color when the panel is in operation.
    Type: Application
    Filed: March 23, 2004
    Publication date: December 2, 2004
    Applicant: FUJITSU DISPLAY TECHNOLOGIES CORPORATION
    Inventors: Masahiro Ikeda, Manabu Sawasaki, Hidetoshi Sukenori, Tetsuya Fujikawa, Shiro Hirota
  • Publication number: 20040239580
    Abstract: The invention relates to a display apparatus used as a display part of an information equipment and an illumination device used for the same, and has an object to provide the display apparatus which can obtain excellent display characteristics and the illumination device used for the same. The illumination device includes plural optical waveguides which include diffusion reflecting layers for diffusing and reflecting guided light, light emission surfaces for emitting the diffused and reflected light, and plural light-emitting areas in which the diffusion reflecting layers are formed and which are separated from each other, and which are stacked so that the plural light-emitting areas are disposed almost complementarily when viewed in a direction vertical to the light emission surfaces, and plural light sources respectively disposed at ends of the plural optical waveguides.
    Type: Application
    Filed: March 30, 2004
    Publication date: December 2, 2004
    Applicant: FUJITSU DISPLAY TECHNOLOGIES CORPORATION
    Inventors: Shinpei Nagatani, Tetsuya Kobayashi, Yoshio Koike, Kazutaka Hanaoka, Hidefumi Yoshida, Yuichi Inoue, Kimiaki Nakamura, Katsunori Tanaka, Katsuhiko Kishida
  • Publication number: 20040239866
    Abstract: A liquid crystal display device of an MVA type and excellent in the visual angle characteristics has been disclosed. In the liquid crystal display device comprising two substrates and a liquid crystal layer, a structure provide so as to partition the liquid crystal layer and for forming at least one enclosed domain within each pixel is comprised, the alignment of the liquid crystal molecules while a voltage is being applied is symmetric with respect to a plane parallel to the substrate and almost passing through the center in the direction of the thickness of the liquid crystal layer, and an oblique ray of incident light passes through two domains the alignment orientations of which are different from each other.
    Type: Application
    Filed: March 22, 2004
    Publication date: December 2, 2004
    Applicant: FUJITSU DISPLAY TECHNOLOGIES CORPORATION.
    Inventors: Takashi Sasabayashi, Norio Sugiura
  • Patent number: 6825892
    Abstract: When radiating light onto a liquid crystal composition containing a photosensitive material, the alignment of liquid crystal molecules is adjusted by applying a voltage to the liquid crystal composition layer, to achieve substantially orderly alignment of the liquid crystal molecules, or the alignment of the liquid crystal molecules is made uniform by adjusting the structure of the liquid crystal display device, or any display defect is driven out of the display area. When radiating light to the liquid crystal composition containing the photosensitive material, the alignment of the liquid crystal molecules can be adjusted so as to achieve substantially orderly alignment of the liquid crystal molecules, and the liquid crystal display device can thus be driven stably.
    Type: Grant
    Filed: March 11, 2004
    Date of Patent: November 30, 2004
    Assignee: Fujitsu Display Technologies Corporation
    Inventors: Hiroyasu Inoue, Kenichi Nagaoka, Yuji Nakahata, Yoji Taniguchi
  • Publication number: 20040233365
    Abstract: The liquid crystal display device comprising a pair of substrates with alignment layers formed thereon, and a liquid crystal filled between the substrates. Each pixel has pixel display portions CA, CB and non-display portions DA, EA, DB, EB. The pixel display portions are treated for realizing alignment in a different manner from the non-display portions and the alignment of the pixel display portions is controlled by the alignment of the non-display portions. Moreover, the alignment treatment is executed by the irradiation with ultraviolet rays in an inclined direction.
    Type: Application
    Filed: June 14, 2004
    Publication date: November 25, 2004
    Applicant: FUJITSU DISPLAY TECHNOLOGIES CORPORATION
    Inventors: Hidefumi Yoshida, Tsutomu Seino, Yasutoshi Tasaka
  • Publication number: 20040232424
    Abstract: A polysilicon film is formed in a predetermined region on a glass substrate, and then a gate insulating film and a gate electrode, whose width is narrower than the gate insulating film, are formed thereon. Then, an interlayer insulating film and an ITO film are formed on an overall surface. Then, n-type source/drain regions having an LDD structure are formed by implanting the n-type impurity into the polysilicon film. Then, an n-type TFT forming region and a pixel-electrode forming region are covered with a resist film, and then p-type source/drain regions are formed by implanting the p-type impurity into the polysilicon film in a p-type TFT forming region. Then, the resist film is left only in the pixel-electrode forming region and the resist film is removed from other regions. A pixel electrode is formed by etching the ITO film while using the remaining resist film as a mask.
    Type: Application
    Filed: May 5, 2004
    Publication date: November 25, 2004
    Applicant: FUJITSU DISPLAY TECHNOLOGIES CORPORATION
    Inventors: Kazushige Hotta, Hiroyuki Yaegashi, Takuya Watanabe, Tamotsu Wada