Patents by Inventor Kunihiro Tashiro

Kunihiro Tashiro has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20100265448
    Abstract: A liquid crystal display device according to the present invention is constituted of a TFT substrate and an opposing substrate which are arranged so as to be opposite to each other with a liquid crystal layer interposed therebetween. In addition, in the liquid crystal layer, formed is a polymer into which a polymer component added to liquid crystal is polymerized, and which determines directions in which liquid crystal molecules tilt when voltage is applied. In the TFT substrate, formed are a sub picture element electrode directly connected to a TFT and a sub picture element electrode connected to the TFT through capacitive coupling. In each of these sub picture element electrodes, formed are slits extending in directions respectively at angles of 45 degrees, 135 degrees, 225 degrees and 315 degrees to the X axis.
    Type: Application
    Filed: May 21, 2010
    Publication date: October 21, 2010
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Yohei Nakanishi, Kunihiro Tashiro, Katsufumi Ohmuro, Kazutaka Hanaoka, Jin Hirosawa, Norio Sugiura, Kengo Kanii, Shota Makimoto, Naoto Kondo, Isao Tsushima, Tomonori Tanose, Takashi Takagi, Tetsuya Fujikawa
  • Patent number: 7808594
    Abstract: A liquid crystal display apparatus including a plurality of pixels, including a pair of substrates and a liquid crystal having a negative dielectric anisotropy inserted between the pair of substrates. First and second electrodes are formed on the pair of substrates, respectively. A first alignment control structure is formed linearly on one of the pair of substrates for controlling an alignment of the liquid crystal, and a second alignment control structure is formed linearly on the other of the pair of substrates for controlling an alignment of the liquid crystal. The first and second alignment control structures are bent in a zigzag fashion and extend parallel with each other, and at least one of the first and second alignment control structures includes a linear portion and a narrow portion having a width narrower than a width of the linear portion.
    Type: Grant
    Filed: July 31, 2009
    Date of Patent: October 5, 2010
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Takahiro Sasaki, Arihiro Takeda, Katsufumi Ohmuro, Hideo Chida, Yoshio Koike, Kimiaki Nakamura, Kunihiro Tashiro
  • Publication number: 20100231833
    Abstract: A liquid crystal display apparatus including a pair of substrates having electrodes and vertical alignment layers. A liquid crystal having a negative anisotropy of dielectric is inserted between the substrates. Each substrate has linearly arranged alignment control structures for controlling the alignment of the liquid crystal. The alignment control structures are formed in the form of projections or slits. Each alignment control structure is formed of a plurality of constituent units. In addition, means for forming a boundary of alignment of liquid crystal (singular point in director field) to control the liquid crystal located on the alignment control structures.
    Type: Application
    Filed: May 19, 2010
    Publication date: September 16, 2010
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Takahiro Sasaki, Arihiro Takeda, Katsufumi Ohmuro, Hideo Chida, Yoshio Koike, Kimiaki Nakamura, Kunihiro Tashiro
  • Publication number: 20100207864
    Abstract: The present invention provides a liquid crystal display panel and a liquid crystal display device in which a position of a singular point of pinwheel alignment is controlled, thereby suppressing rough-grained image and generation of image retention, and in which the response time is improved. The present invention is a liquid crystal display panel including a pair of substrates and a liquid crystal layer interposed therebetween, the liquid crystal layer including liquid crystal molecules with negative dielectric anisotropy, wherein the pair of substrates each include an electrode, at least one of the pair of substrates includes a vertical alignment film and a photopolymerized polymer, the electrode on one of the pair of substrates has such a shape as to provide pinwheel alignment of the liquid crystal molecules upon application of a voltage and is partly provided with openings for surrounding a singular point of the pinwheel alignment and keeping the singular point within the electrode.
    Type: Application
    Filed: June 5, 2008
    Publication date: August 19, 2010
    Inventors: Kunihiro Tashiro, Takahiro Sasaki, Takayuki Hayano, Toshihiro Matsumoto
  • Patent number: 7768606
    Abstract: On a glass substrate, gate bus lines, data bus lines, and TFTs are formed. Then, on the substrate, an insulating film, covering the gate bus lines, data bus lines and TFTs, is formed, and a positive type photoresist film is further formed thereon. Next, through exposure and development processes, the resist film is divided for each picture element and subjected to ultraviolet ray irradiation to harden only a surface layer thereof. Then, the resist film is subjected to heat treatment to form thereon wrinkle-form surface ruggedness of a uniform pattern, which is determined depending on the size of the resist film. Subsequently, reflection electrodes are formed on the resist film. The reflection electrodes are formed to overlap the gate bus line, data bus line and TFTs, and the regions between the adjacent reflection electrodes serve as light transmission regions.
    Type: Grant
    Filed: February 20, 2007
    Date of Patent: August 3, 2010
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Katsufumi Ohmuro, Norio Sugiura, Kunihiro Tashiro
  • Patent number: 7768603
    Abstract: Opening portions (opening patterns) having different arrangement pitches and sizes are formed in first metal film patterns, a first semiconductor film, second metal film patterns, a third insulating film, and the like under a reflective electrode, respectively. These opening portions overlap each other complexly to form fine bumps and dips in the surface of the reflective electrode. Further, the opening portions can be formed in the first metal film patterns, the first semiconductor film, and the second metal film patterns simultaneously with the formation of TFTs. Accordingly, an increase in the number of steps can be avoided.
    Type: Grant
    Filed: April 12, 2005
    Date of Patent: August 3, 2010
    Assignees: Fujitsu Limited, Au Optronics Corporation
    Inventors: Yasutoshi Tasaka, Hidefumi Yoshida, Kunihiro Tashiro, Yoshinori Tanaka, Seiji Doi, Tomoshige Oda, Isao Tsushima
  • Patent number: 7760305
    Abstract: A liquid crystal display device that includes a plurality of pixels, a first substrate and a second substrate, as well as a liquid crystal layer provided between the first and second substrates. A first alignment structure and a second alignment structure are formed on the first substrate, and a third alignment structure and a fourth alignment structure are formed on the second substrate, for controlling an alignment of the liquid crystal. At least one auxiliary alignment structure is also formed on the first substrate for controlling an alignment of liquid crystals. The first and second alignment structures extend linearly in different directions from each other in a pixel, and the third and fourth alignment structures extend parallel to the first and second alignment structures, respectively. Also, the auxiliary alignment structure extends substantially along an edge of the pixel.
    Type: Grant
    Filed: May 15, 2008
    Date of Patent: July 20, 2010
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Arihiro Takeda, Katsufumi Ohmuro, Yoshio Koike, Shingo Kataoka, Takahiro Sasaki, Takashi Sasabayashi, Hideaki Tsuda, Hideo Chida, Makoto Ohashi, Kenji Okamoto, Hisashi Yamaguchi, Minoru Otani, Makoto Morishige, Noriaki Furukawa, Tsuyoshi Kamada, Yoshinori Tanaka, Atuyuki Hoshino, Shougo Hayashi, Hideaki Takizawa, Takeshi Kinjou, Makoto Tachibanaki, Keiji Imoto, Tadashi Hasegawa, Hidefumi Yoshida, Hiroyasu Inoue, Yoji Taniguchi, Tetsuya Fujikawa, Satoshi Murata, Manabu Sawasaki, Tomonori Tanose, Siro Hirota, Masahiro Ikeda, Kunihiro Tashiro, Kouji Tsukao, Yasutoshi Tasaka, Takatoshi Mayama, Seiji Tanuma, Yohei Nakanishi
  • Patent number: 7751003
    Abstract: The invention relates to a transflective liquid crystal display capable of display in both of transmissive and reflective modes and a method of manufacturing the same and provides a transflective liquid crystal display which can achieve high display characteristics in both of the transmissive and reflective modes.
    Type: Grant
    Filed: January 5, 2009
    Date of Patent: July 6, 2010
    Assignees: Fujitsu Limited, AU Optronics Corporation
    Inventors: Hidefumi Yoshida, Yasutoshi Tasaka, Kunihiro Tashiro, Katsufumi Ohmuro, Tsuyoshi Kamada, Kazuya Ueda, Masakazu Shibasaki
  • Publication number: 20100165259
    Abstract: A liquid crystal display device according to the present invention is constituted of a TFT substrate and an opposing substrate which are arranged so as to be opposite to each other with a liquid crystal layer interposed therebetween. In addition, in the liquid crystal layer, formed is a polymer into which a polymer component added to liquid crystal is polymerized, and which determines directions in which liquid crystal molecules tilt when voltage is applied. In the TFT substrate, formed are a sub picture element electrode directly connected to a TFT and a sub picture element electrode connected to the TFT through capacitive coupling. In each of these sub picture element electrodes, formed are slits extending in directions respectively at angles of 45 degrees, 135 degrees, 225 degrees and 315 degrees to the X axis.
    Type: Application
    Filed: March 15, 2010
    Publication date: July 1, 2010
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Yohei Nakanishi, Kunihiro Tashiro, Katsufumi Ohmuro, Kazutaka Hanaoka, Jin Hirosawa, Norio Sugiura, Kengo Kanii, Shota Makimoto, Naoto Kondo, Isao Tsushima, Tomonori Tanose, Takashi Takagi, Tetsuya Fujikawa
  • Patent number: 7738062
    Abstract: The invention relates to a transflective liquid crystal display and a method of manufacturing the same and provides a transflective liquid crystal display which can achieve high display characteristics in both of reflective and transmissive modes and a method of manufacturing the same. The display has a pair of substrates provided opposite to each other, a liquid crystal sealed between the pair of substrates, a plurality of pixel regions each having a reflective area which reflects light from the side of one of the substrates and a transmissive area which transmits light from the side of the other of the substrates toward the one of the substrates, and an ultraviolet-hardened material which is a product of polymerization of a polymeric component mixed in the liquid crystal with ultraviolet light and which is formed at a substrate interface in the reflective area to control the alignment of the liquid crystal in the reflective area.
    Type: Grant
    Filed: November 10, 2004
    Date of Patent: June 15, 2010
    Assignees: Fujitsu Limited, AU Optronics Corporation
    Inventors: Shingo Kataoka, Katsufumi Ohmuro, Takahiro Sasaki, Kunihiro Tashiro
  • Patent number: 7733457
    Abstract: An object of the present invention is to provide a liquid crystal display, which can surely perform an instillation process used when liquid crystal is sealed between substrates in a cell process, and a fabrication method thereof. A liquid crystal display comprises a sealing material made of a photo-curing type material which seals liquid crystal sandwiched between substrates, and a shading film having a shading area which overlays a red-colored layer transmitting red light, a green-colored layer transmitting green light and a blue-colored layer transmitting blue light, wherein only the blue-colored layer is formed in an area of the shading film contacting with the sealing material and the photo-curing type material of the sealing material is structured to have a light reactive area for a wavelength of blue color band.
    Type: Grant
    Filed: May 10, 2007
    Date of Patent: June 8, 2010
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Kunihiro Tashiro, Takuya Yoshimi
  • Publication number: 20100134746
    Abstract: An object of the present invention is to provide a liquid crystal display, which can surely perform an instillation process used when liquid crystal is sealed between substrates in a cell process, and a fabrication method thereof. A liquid crystal display comprises a sealing material made of a photo-curing type material which seals liquid crystal sandwiched between substrates, and a shading film having a shading area which overlays a red-colored layer transmitting red light, a green-colored layer transmitting green light and a blue-colored layer transmitting blue light, wherein only the blue-colored layer is formed in an area of the shading film contacting with the sealing material and the photo-curing type material of the sealing material is structured to have a light reactive area for a wavelength of blue color band.
    Type: Application
    Filed: February 3, 2010
    Publication date: June 3, 2010
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Kunihiro Tashiro, Takuya Yoshimi, Yoshio Koike, Satoru Imai, Hideaki Tsuda, Hiroyasu Inoue, Satoshi Murata, Hidehiko Suzuki, Hidefumi Yoshida, Tadashi Hasegawa, Yoji Taniguchi, Norimichi Nakayama, Hiroyuki Sugimura, Minoru Otani
  • Publication number: 20100134747
    Abstract: An object of the present invention is to provide a liquid crystal display, which can surely perform an instillation process used when liquid crystal is sealed between substrates in a cell process, and a fabrication method thereof. A liquid crystal display comprises a sealing material made of a photo-curing type material which seals liquid crystal sandwiched between substrates, and a shading film having a shading area which overlays a red-colored layer transmitting red light, a green-colored layer transmitting green light and a blue-colored layer transmitting blue light, wherein only the blue-colored layer is formed in an area of the shading film contacting with the sealing material and the photo-curing type material of the sealing material is structured to have a light reactive area for a wavelength of blue color band.
    Type: Application
    Filed: February 3, 2010
    Publication date: June 3, 2010
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Kunihiro Tashiro, Takuya Yoshimi, Yoshio Koike, Satoru Imai, Hideaki Tsuda, Hiroyasu Inoue, Satoshi Murata, Hidehiko Suzuki, Hidefumi Yoshida, Tadashi Hasegawa, Yoji Taniguchi, Norimichi Nakayama, Hiroyuki Sugimura, Minoru Otani
  • Patent number: 7719646
    Abstract: A liquid crystal display device of the present invention is composed of a ?/4 plate 1, a ?/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 ?/2 plate 2 is about 45°, an in-plane retardation of the ?/2 plate 2 is set to a value obtained by adding ?/4 to an in-plane retardation of a retardation plate 1, desirably, the ?/4 plate 1, and an optical axis of the ?/4 plate 1 and an optical axis of the ?/2 plate 2 are orthogonal to each other. In this configuration, the optical axis of the ?/4 plate 1 is placed at 150°, the optical axis of the ?/2 plate 2 is placed at 60°, and the absorption axis of the polarizing plate 3 is placed at 15°.
    Type: Grant
    Filed: November 17, 2003
    Date of Patent: May 18, 2010
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Kunihiro Tashiro, Katsufumi Ohmuro, Norio Sugiura, Hidefumi Yoshida
  • Publication number: 20100118233
    Abstract: The technology presented herein has a feature of providing a liquid crystal display device of an excellent viewing angle characteristic and high brightness, including: liquid crystals containing polymerizable monomers between a first substrate with a pixel electrode having micro slits and a second substrate facing the first substrate; wherein the monomers are polymerizable with voltage applied to the liquid crystals; and an alignment orientation of the liquid crystals is controllable to a direction of extending the micro slit, wherein the pixel electrode includes: a direct coupling part electrically connected to a switching element; a capacitive coupling part electrically insulated from the switching element, and a space between the direct and capacitive coupling parts, wherein directions in which the micro slits are extended along the direct and capacitive coupling parts are orthogonal to each other.
    Type: Application
    Filed: January 21, 2010
    Publication date: May 13, 2010
    Applicant: Sharp Kabushiki Kaisha
    Inventors: Kazutaka HANAOKA, Katsufumi Ohmuro, Kunihiro Tashiro, Jin Hirosawa, Norio Sugiura, Kengo Kanii, Shota Makimoto, Yasuhiro Ohno, Isao Tsushima, Tomonori Tanose, Takashi Takagi, Tetsuya Fujikawa, Takahiro Sasaki
  • Patent number: 7710523
    Abstract: A liquid crystal display device according to the present invention is constituted of a TFT substrate and an opposing substrate which are arranged so as to be opposite to each other with a liquid crystal layer interposed therebetween. In addition, in the liquid crystal layer, formed is a polymer into which a polymer component added to liquid crystal is polymerized, and which determines directions in which liquid crystal molecules tilt when voltage is applied. In the TFT substrate, formed are a sub picture element electrode directly connected to a TFT and a sub picture element electrode connected to the TFT through capacitive coupling. In each of these sub picture element electrodes, formed are slits extending in directions respectively at angles of 45 degrees, 135 degrees, 225 degrees and 315 degrees to the X axis.
    Type: Grant
    Filed: April 12, 2005
    Date of Patent: May 4, 2010
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Yohei Nakanishi, Kunihiro Tashiro, Katsufumi Ohmuro, Kazutaka Hanaoka, Jin Hirosawa, Norio Sugiura, Kengo Kanii, Shota Makimoto, Naoto Kondo, Isao Tsushima, Tomonori Tanose, Takashi Takagi, Tetsuya Fujikawa
  • Publication number: 20100103206
    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: November 17, 2009
    Publication date: April 29, 2010
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Tsuyoshi Kamada, Hidefumi Yoshida, Yoshio Koike, Toshiaki Suzuki, Tetsuya Kobayashi, Yasutoshi Tasaka, Masakazu Shibasaki, Kunihiro Tashiro, Kazuya Ueda, Katsuyoshi Hiraki
  • Publication number: 20100090938
    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: October 9, 2009
    Publication date: April 15, 2010
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Tsuyoshi Kamada, Hidefumi Yoshida, Yoshio Koike, Toshiaki Suzuki, Tetsuya Kobayashi, Yasutoshi Tasaka, Masakazu Shibasaki, Kunihiro Tashiro, Kazuya Ueda, Katsuyoshi Hiraki
  • Publication number: 20100035504
    Abstract: The invention has an object to provide a liquid crystal display in which a wide angle of view is obtained and a response time at a halftone can be shortened by regulating an alignment orientation of a liquid crystal by the use of a polymer fixation system in which a liquid crystal layer containing a polymerizable component is sealed between substrates, and the polymerizable component is polymerized while a voltage is applied to the liquid crystal layer to fix a liquid crystal alignment. A liquid crystal layer containing a polymer for regulating a pretilt angle of a liquid crystal molecule and a tilt direction at a time of driving is sealed between two substrates arranged opposite to each other.
    Type: Application
    Filed: August 5, 2009
    Publication date: February 11, 2010
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Takahiro Sasaki, Kazutaka Hanaoka, Tsutomu Seino, Yohei Nakanishi, Seiji Tanuma, Kimiaki Nakamura, Yuichi Inoue, Masakazu Shibasaki, Hideaki Tsuda, Yoshio Koike, Yasutoshi Tasaka, Hidefumi Yoshida, Kunihiro Tashiro
  • Patent number: 7656474
    Abstract: The technology presented herein has a feature of providing a liquid crystal display device of an excellent viewing angle characteristic and high brightness, including: liquid crystals containing polymerizable monomers between a first substrate with a pixel electrode having micro slits and a second substrate facing the first substrate; wherein the monomers are polymerizable with voltage applied to the liquid crystals; and an alignment orientation of the liquid crystals is controllable to a direction of extending the micro slit, wherein the pixel electrode includes: a direct coupling part electrically connected to a switching element; a capacitive coupling part electrically insulated from the switching element, and a space between the direct and capacitive coupling parts, wherein directions in which the micro slits are extended along the direct and capacitive coupling parts are orthogonal to each other.
    Type: Grant
    Filed: May 26, 2006
    Date of Patent: February 2, 2010
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Kazutaka Hanaoka, Katsufumi Ohmuro, Kunihiro Tashiro, Jin Hirosawa, Norio Sugiura, Kengo Kanii, Shota Makimoto, Yasuhiro Ohno, Isao Tsushima, Tomonori Tanose, Takashi Takagi, Tetsuya Fujikawa, Takahiro Sasaki