Patents by Inventor Yohei Nakanishi

Yohei Nakanishi 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).

  • Patent number: 7372533
    Abstract: It is an object of the invention to provide a substrate for a liquid crystal display having optical transmittance improved without reducing the speed of a response to a tone change and a liquid crystal display utilizing the same. There is provided a drain bus line formed on an array substrate which sandwiches a liquid crystal in combination with an opposite substrate provided in a face-to-face relationship therewith, a TFT connected to the drain bus line, and a pixel electrode which has stripe-shaped electrodes, along with spaces, connected to the TFT and provided in parallel with the drain bus line, stripe-shaped electrodes in the vicinity of the drain bus line having an electrode width formed narrower than the width of internal electrodes located inside the same.
    Type: Grant
    Filed: June 29, 2005
    Date of Patent: May 13, 2008
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Yuichi Inoue, Kazutaka Hanaoka, Yohei Nakanishi, Masakazu Shibasaki, Kimiaki Nakamura, Yoshio Koike, Takahiro Sasaki, Shingo Kataoka
  • Publication number: 20080106683
    Abstract: The invention relates to a manufacturing method of a liquid crystal display device in which an alignment direction of a liquid crystal molecule at the time of driving is regulated by using a polymer, and has an object to provide a manufacturing method of a liquid crystal display device in which excellent display characteristics can be obtained. A liquid crystal layer containing a polymerizable component capable of being polymerized by light is sealed between two substrates arranged to be opposite to each other, the polymerizable component is polymerized by irradiation of light under a predetermined light irradiation condition while a voltage is applied to the liquid crystal layer under a predetermined voltage application condition, and when a pre-tilt angle of a liquid crystal molecule and/or an alignment direction at a time of driving is regulated, at least one of the voltage application condition and the light irradiation condition is changed for each region.
    Type: Application
    Filed: October 30, 2007
    Publication date: May 8, 2008
    Applicant: Sharp Kabushiki Kaisha
    Inventors: Kazutaka Hanaoka, Yohei Nakanishi, Yuichi Inoue, Masakazu Shibasaki
  • Publication number: 20080106687
    Abstract: The invention relates to a manufacturing method of a liquid crystal display device in which an alignment direction of a liquid crystal molecule at the time of driving is regulated by using a polymer, and has an object to provide a manufacturing method of a liquid crystal display device in which excellent display characteristics can be obtained. A liquid crystal layer containing a polymerizable component capable of being polymerized by light is sealed between two substrates arranged to be opposite to each other, the polymerizable component is polymerized by irradiation of light under a predetermined light irradiation condition while a voltage is applied to the liquid crystal layer under a predetermined voltage application condition, and when a pre-tilt angle of a liquid crystal molecule and/or an alignment direction at a time of driving is regulated, at least one of the voltage application condition and the light irradiation condition is changed for each region.
    Type: Application
    Filed: October 30, 2007
    Publication date: May 8, 2008
    Applicant: Sharp Kabushiki Kaisha
    Inventors: Katsuhiko Kishida, Yohei Nakanishi, Hideaki Tsuda, Kazutaka Hanaoka, Yuichi Inoue, Masakazu Shibasaki
  • Patent number: 7345719
    Abstract: The invention relates to a manufacturing method of a liquid crystal display device in which an alignment direction of a liquid crystal molecule at the time of driving is regulated by using a polymer, and has an object to provide a manufacturing method of a liquid crystal display device in which excellent display characteristics can be obtained. A liquid crystal layer containing a polymerizable component capable of being polymerized by light is sealed between two substrates arranged to be opposite to each other, the polymerizable component is polymerized by irradiation of light under a predetermined light irradiation condition while a voltage is applied to the liquid crystal layer under a predetermined voltage application condition, and when a pre-tilt angle of a liquid crystal molecule and/or an alignment direction at a time of driving is regulated, at least one of the voltage application condition and the light irradiation condition is changed for each region.
    Type: Grant
    Filed: April 5, 2005
    Date of Patent: March 18, 2008
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Katsuhiko Kishida, Yohei Nakanishi
  • Publication number: 20080062368
    Abstract: The invention relates to a manufacturing method of a liquid crystal display device in which an alignment direction of a liquid crystal molecule at the time of driving is regulated by using a polymer, and has an object to provide a manufacturing method of a liquid crystal display device in which excellent display characteristics can be obtained. A liquid crystal layer containing a polymerizable component capable of being polymerized by light is sealed between two substrates arranged to be opposite to each other, the polymerizable component is polymerized by irradiation of light under a predetermined light irradiation condition while a voltage is applied to the liquid crystal layer under a predetermined voltage application condition, and when a pre-tilt angle of a liquid crystal molecule and/or an alignment direction at a time of driving is regulated, at least one of the voltage application condition and the light irradiation condition is changed for each region.
    Type: Application
    Filed: October 29, 2007
    Publication date: March 13, 2008
    Applicant: Sharp Kabushiki Kaisha
    Inventors: Katsuhiko Kishida, Yohei Nakanishi, Hideaki Tsuda, Kazutaka Hanaoka, Yuichi Inoue, Masakazu Shibasaki
  • Patent number: 7319500
    Abstract: There is provided a liquid crystal display which exhibits preferable viewing angle characteristics even in a diagonal viewing angle. Optical retardation films of a first type that satisfy nx>ny, nz and optical retardation films of a second type that satisfy nx?ny>nz are used, and a setting is made to satisfy Rp?t=2×(?0.08×RLC+58 nm+?) (?=±30 nm) and Rt?t=(1.05±0.05)×RLC?47 nm+?(?100 nm???47 nm) where ?nd represents a retardation RLC in the liquid crystal display; Rp?t represents the sum of retardations Rp in in-plane directions of a plurality of optical retardation films; and Rt?t represents the sum of retardations Rt in the direction of the thickness of the plurality of optical retardation films.
    Type: Grant
    Filed: April 3, 2001
    Date of Patent: January 15, 2008
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Hidefumi Yoshida, Takashi Sasabayashi, Yasutoshi Tasaka, Yohei Nakanishi, Kenji Okamoto, Seiji Tanuma, Kazutaka Hanaoka, Takatoshi Mayama, Yuichi Inoue
  • Publication number: 20070291207
    Abstract: The invention relates to a liquid crystal display in which a polymeric component included in a liquid crystal layer is polymerized while adjusting a voltage applied to the liquid crystal layer to regulate the direction of alignment of liquid crystal molecules during polymerization and a method of manufacturing the same. The invention provides a liquid crystal display in which image sticking is mitigated and a method of manufacturing the same. In a method of manufacturing a liquid crystal display in which a liquid crystal composition including a polymeric component that is optically or thermally polymerized is sealed between substrates and in which the polymeric component is polymerized while applying a voltage to the liquid crystal composition to regulate the direction of alignment of liquid crystal molecules during driving, a configuration is employed such that a polymerization initiator in the liquid crystal composition has a concentration x that satisfies 0?x?0.
    Type: Application
    Filed: May 18, 2007
    Publication date: December 20, 2007
    Inventors: Yohei Nakanishi, Hiroyasu Inoue, Yuji Nakahata, Kengo Kanii, Kazutaka Hanaoka, Masakazu Shibasaki, Yuichi Inoue
  • Patent number: 7304703
    Abstract: A vertically alignment mode liquid crystal display device having an improved viewing angle characteristic is disclosed. The disclosed liquid crystal display device uses a liquid crystal having a negative anisotropic dielectric constant, and orientations of the liquid crystal are vertical to substrates when no voltage being applied, almost horizontal when a predetermined voltage is applied, and oblique when an intermediate voltage is applied. At least one of the substrates includes a structure as domain regulating means, and inclined surfaces of the structure operate as a trigger to regulate azimuths of the oblique orientations of the liquid crystal when the intermediate voltage is applied.
    Type: Grant
    Filed: September 15, 2000
    Date of Patent: December 4, 2007
    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
  • Publication number: 20070273818
    Abstract: A liquid crystal display device including a pair of substrates in a spaced relationship with one another. A pair of alignment films are provided, one alignment film being formed on each substrate such that the alignment films face one another. A liquid crystal layer; including plural liquid crystals, is inserted between the pair of alignment films, wherein the alignment films impart a given pre-tilt angle to the liquid crystals. The alignment films are composed of a material containing at least two types of polymers having a prescribed initial alignment and different alignment variation rates in response to ultraviolet ray irradiation. The pre-tilt angle being adjusted, without rubbing the alignment films, through ultraviolet exposure of the alignment films.
    Type: Application
    Filed: May 4, 2007
    Publication date: November 29, 2007
    Inventors: Hidefumi Yoshida, Yasutoshi Tasaka, Takashi Sasabayashi, Yohei Nakanishi, Kenji Okamoto
  • Publication number: 20070247559
    Abstract: The present invention provides a liquid crystal display device used as a display part of an electronic apparatus which exhibits high brightness and favorable display quality. The liquid crystal display device includes a pair of substrates which are arranged to face each other in an opposed manner; vertical-alignment type liquid crystal which is sealed between the pair of substrates; a plurality of pixel regions, each pixel region including a sub pixel having a pixel electrode on one substrate and a sub pixel having a pixel electrode on one substrate, a slit formed between the pixel electrodes; and a singular point control part which includes projecting portions which are formed on end portions of the pixel electrodes on the slit-side and controls singular points of the liquid crystal.
    Type: Application
    Filed: January 18, 2006
    Publication date: October 25, 2007
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Yasutoshi Tasaka, Takahiro Sasaki, Yohei Nakanishi, Masakazu Shibasaki, Takashi Sasabayashi, Hidefumi Yoshida, Tsuyoshi Kamada, Hideaki Tsuda, Kazuya Ueda
  • Patent number: 7274425
    Abstract: The invention relates to a liquid crystal display in which a polymeric component included in a liquid crystal layer is polymerized while adjusting a voltage applied to the liquid crystal layer to regulate the direction of alignment of liquid crystal molecules during polymerization and a method of manufacturing the same. The invention provides a liquid crystal display in which image sticking is mitigated and a method of manufacturing the same. In a method of manufacturing a liquid crystal display in which a liquid crystal composition including a polymeric component that is optically or thermally polymerized is sealed between substrates and in which the polymeric component is polymerized while applying a voltage to the liquid crystal composition to regulate the direction of alignment of liquid crystal molecules during driving, a configuration is employed such that a polymerization initiator in the liquid crystal composition has a concentration x that satisfies 0?x?0.
    Type: Grant
    Filed: July 15, 2004
    Date of Patent: September 25, 2007
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Yohei Nakanishi, Hiroyasu Inoue, Yuji Nakahata, Kengo Kanii, Kazutaka Hanaoka, Masakazu Shibasaki, Yuichi Inoue
  • Publication number: 20070132690
    Abstract: A liquid crystal display device includes a gate bus line and a data bus line formed on a first substrate, a first transistor formed on the first substrate and connected to the gate bus line and the data bus line, a plurality of sub-picture element electrodes formed the said first substrate in a picture element region defined by the gate bus line and the data bus line, a control electrode formed on the first substrate in capacitance coupling with at least one of the plural sub-picture element electrodes, the control electrode being applied with a display voltage from the data bus line via the first transistor, and an auxiliary capacitance bus line held at a predetermined voltage level and constituting an auxiliary capacitance between the auxiliary capacitance bus line and the control electrode, wherein there is provided a second transistor between the sub-picture element electrode coupled with the control electrode by the capacitance coupling and the auxiliary capacitance bus line or between the sub-picture el
    Type: Application
    Filed: May 25, 2006
    Publication date: June 14, 2007
    Applicant: Sharp Kabushiki Kaisha
    Inventors: Yohei Nakanishi, Tsuyoshi Kamada, Hideaki Tsuda, Hidefumi Yoshida, Yasutoshi Tasaka, Masakazu Shibasaki
  • Patent number: 7227606
    Abstract: A vertical alignment mode liquid crystal display device having an improved viewing angle characteristic is provided. The liquid crystal display device uses a liquid crystal having a negative anisotropic dielectric constant, and orientations of the liquid crystal are vertical to substrates when no voltage is applied, almost horizontal when a predetermined voltage is applied, and oblique when an intermediate voltage is applied. At least one of the substrates includes a structure as domain regulating means, and inclined surfaces of the structure operate as a trigger to regulate azimuths of the oblique orientations of the liquid crystal when the intermediate voltage is applied.
    Type: Grant
    Filed: November 21, 2003
    Date of Patent: June 5, 2007
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Arihiro Takeda, Katsufumi Ohmuro, Yoshio Koike, Shingo Kataoka, Takahiro Sasaki, 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: 7224421
    Abstract: A vertical alignment mode liquid crystal display device having an improved viewing angle characteristic uses a liquid crystal having a negative anisotropic dielectric constant, and orientations of the liquid crystal are vertical to substrates when no voltage being applied, almost horizontal when a predetermined voltage is applied, and oblique when an intermediate voltage is applied. At least one of two substrates includes a structure as domain regulating means, to regulate azimuths of the oblique orientations of the liquid crystal when the intermediate voltage is applied.
    Type: Grant
    Filed: October 12, 2000
    Date of Patent: May 29, 2007
    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
  • Publication number: 20070064187
    Abstract: A vertically alignment mode liquid crystal display device having an improved viewing angle characteristic is disclosed. The disclosed liquid crystal display device uses a liquid crystal having a negative anisotropic dielectric constant, and orientations of the liquid crystal are vertical to substrates when no voltage being applied, almost horizontal when a predetermined voltage is applied, and oblique when an intermediate voltage is applied. At least one of the substrates includes a structure as domain regulating means, and inclined surfaces of the structure operate as a trigger to regulate azimuths of the oblique orientations of the liquid crystal when the intermediate voltage is applied.
    Type: Application
    Filed: November 16, 2006
    Publication date: March 22, 2007
    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
  • Publication number: 20070064164
    Abstract: The invention relates to a liquid crystal display device and provides a liquid crystal display device which can achieve high display quality. A liquid crystal display device is provided with first and second TFTs each having a gate electrode connected to an nth gate bus line and a drain electrode connected to a drain bus line; a first pixel electrode connected to a source electrode of the first TFT; a second pixel electrode connected to a source electrode of the second TFT; a third TFT having a gate electrode connected to an (n+1)th gate bus line and a source electrode connected to the second pixel electrode; and a buffer capacitance portion having a buffer capacitance electrode which is formed in the same layer as the first and second pixel electrodes and is connected to a drain electrode of the third TFT and a buffer capacitance electrode connected to a storage capacitance bus line.
    Type: Application
    Filed: March 28, 2006
    Publication date: March 22, 2007
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Yasutoshi Tasaka, Yohei Nakanishi, Masakazu Shibasaki, Tsuyoshi Kamada, Hidefumi Yoshida, Hideaki Tsuda
  • Patent number: 7193672
    Abstract: A vertically aligned liquid crystal display device for controlling liquid crystal molecules alignment with linear structures or slits consisting of a plurality of constituent units on at least one of a pair of substrates. In one configuration, an alignment controlling means forms an alignment singular points s=+1 of liquid crystal molecules at an intersecting point between the structures (or slits) and an edge of a pixel electrode. Preferably, at least one of the constituent units has bending portions over a capacitive bus line. In one preferred embodiment, the height of a portion of the linear structure opposite an edge of a pixel electrode is higher than other areas of the linear structures. Additionally, all liquid crystal molecules around an intersecting point between the structures or the slits formed on one substrate and an edge of a pixel electrode formed on the other substrate are preferably aligned to the intersecting point.
    Type: Grant
    Filed: August 20, 2004
    Date of Patent: March 20, 2007
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Arihiro Takeda, Yoshio Koike, Takahiro Sasaki, Kouji Tsukao, Shingo Kataoka, Kimiaki Nakamura, Yuichi Inoue, Kazutaka Hanaoka, Seiji Tanuma, Takatoshi Mayama, Hidefumi Yoshida, Yasutoshi Tasaka, Takashi Sasabayashi, Yohei Nakanishi
  • Patent number: 7190429
    Abstract: A liquid crystal display apparatus including pair of substrates; a liquid crystal arranged between the pair of substrates; a plurality of stripe electrodes per pixel and an alignment layer formed in one of the substrates; a transparent electrode covering substantially the whole surface of the other substrate and an alignment layer formed in the other substrate; and an insulating layer arranged in one substrate to cover the stripe electrodes. The insulating layer preferably has openings above the stripe electrodes and the openings preferably have tapered side walls.
    Type: Grant
    Filed: September 3, 2003
    Date of Patent: March 13, 2007
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Hidefumi Yoshida, Yasutoshi Tasaka, Takashi Sasabayashi, Yohei Nakanishi, Kimiaki Nakamura, Yoshio Koike, Tetsuya Fujikawa
  • Publication number: 20070035685
    Abstract: Sub picture element electrodes made of ITO are formed in a picture element region which is sectioned by gate bus lines and data bus lines. These sub picture element electrodes are electrically connected to each other with a wiring connection. This wiring connection includes a metal connection portion which is formed simultaneously with the data bus lines and the like, and an ITO connection portion which is formed simultaneously with the sub picture element electrodes.
    Type: Application
    Filed: March 14, 2006
    Publication date: February 15, 2007
    Applicant: Sharp Kabushiki Kaisha
    Inventors: Hidefumi Yoshida, Yasutoshi Tasaka, Hideaki Tsuda, Yohei Nakanishi, Tsuyoshi Kamada, Kazuya Ueda
  • Publication number: 20070024556
    Abstract: One picture element is divided into first and second sub-picture element regions. A sub-picture element electrode connected directly (not via capacitive coupling) to a source electrode of a TFT is placed in the first sub-picture element region and a sub-picture element electrode capacitively coupled to a control electrode connected to a source electrode is placed in the second sub-picture element region. A transparent resin film is formed in the first sub-picture element region and this makes a liquid crystal layer thickness in the second sub-picture element region thicker than that of the first sub-picture element region.
    Type: Application
    Filed: February 13, 2006
    Publication date: February 1, 2007
    Applicant: Sharp Kabushiki Kaisha
    Inventors: Hidefumi Yoshida, Yasutoshi Tasaka, Hideaki Tsuda, Yohei Nakanishi, Tsuyoshi Kamada, Masakazu Shibasaki