Patents by Inventor Tetsuya Fujikawa

Tetsuya Fujikawa 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: 7692740
    Abstract: The invention relates to a substrate for a liquid crystal display used in a display section of an information apparatus, a liquid crystal display having the same, and a method of manufacturing the same. There is provided a substrate for a liquid crystal display which achieves good display quality with reduced manufacturing steps, a liquid crystal display having the same, and a method of manufacturing the same. TFTs are formed on a glass substrate. A protective film is formed on the TFTs, and a resist pattern is formed on the protective film, the resist pattern having openings located above source electrodes, gate bus line terminals, and drain bus line terminals. The resist pattern is baked at a baking temperature of 200 (or more after irradiating the surface thereof with ultraviolet light to form a wrinkled resin layer having a wrinkled surface.
    Type: Grant
    Filed: February 23, 2005
    Date of Patent: April 6, 2010
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Seiji Doi, Tetsuya Fujikawa, Naoshige Itami, Yoshinori Tanaka, Atsuyuki Hoshino, Yoshio Kurosawa
  • Publication number: 20100066955
    Abstract: The invention relates to a substrate for use in a liquid crystal display of a CF-on-TFT structure in which a color filter is formed on the side of an array substrate in which a switching element is formed, and has an object to provide a substrate for use in a liquid crystal display, which enables simplification of a manufacturing process typified by a photolithography process and has high reliability. The substrate for use in the liquid crystal display is constructed to include external connection terminals which include first terminal electrodes electrically connected to gate bus lines led out from a plurality of pixel regions arranged on a glass substrate in a matrix form, second terminal electrodes formed of forming material of a pixel electrode and directly on the glass substrate, and electrode coupling regions for electrically connecting the first and the second terminal electrodes, and which electrically connect an external circuit and the gate bus lines.
    Type: Application
    Filed: November 20, 2009
    Publication date: March 18, 2010
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Atuyuki Hoshino, Shiro Hirota, Naoto Kondo, Tetsuya Fujikawa, Masahiro Kihara, Katsunori Misaki, Seiji Doi, Tomoshige Oda, Akira Komorita, Akihiro Matsui, Manabu Sawasaki, Masahiro Ikeda, Takashi Takagi, Tomonori Tanose, Takuya Saguchi, Hidetoshi Sukenori, Hiroyasu Inoue
  • 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
  • Patent number: 7586579
    Abstract: On a TFT substrate, gate bus lines, data bus lines, picture element electrodes, and the like are formed, and further a first alignment film is formed of polyimide or the like. On an opposing substrate, black matrices, common electrodes, and the like formed; and further column-like spacers are formed at positions facing regions where the gate bus lines and the data bus lines cross. A second alignment film covering the surfaces of the common electrode and the spacers is formed. However, the first and second alignment films are maintained semi-setting. Thereafter, the TFT substrate and the opposing substrate are overlapped, and heated at high temperature under pressure; and the second alignment film on the apexes of the spacers and the first alignment film on the TFT substrate side are joined.
    Type: Grant
    Filed: May 19, 2006
    Date of Patent: September 8, 2009
    Assignee: Sharp Kabushiki kaisha
    Inventors: Takashi Takagi, Manabu Sawasaki, Tetsuya Fujikawa
  • Publication number: 20090207360
    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: April 28, 2009
    Publication date: August 20, 2009
    Applicant: 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: 7554631
    Abstract: By circular or polygonal openings formed in at least one of a metal film, a semiconductor film, an insulating film and the like, which films are below a reflecting electrode, minute irregularities are densely formed on a surface of the reflecting electrode. In this case, it is required that a linear density defined by peripheral dimensions of the openings per unit area is equal to 0.2 or more.
    Type: Grant
    Filed: December 15, 2005
    Date of Patent: June 30, 2009
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Kunihiro Tashiro, Yasutoshi Tasaka, Hidefumi Yoshida, Yoshinori Tanaka, Seiji Doi, Tomoshige Oda, Manabu Sawasaki, Tomonori Tanose, Takashi Takagi, Isao Tsushima, Tetsuya Fujikawa, Norio Sugiura
  • Publication number: 20090148616
    Abstract: The present invention is a method of manufacturing a liquid crystal display device, wherein light having an exposure energy is irradiated on the surface of a photo-sensitive resin layer having a predetermined film thickness, and a distribution of thermal deformation characteristics in the thickness direction (or the plane direction) of the photo-sensitive resin layer is formed, then heat treatment is performed to form random undulation (micro-grooves or micro-wrinkles) on the surface of the photo-sensitive resin layer.
    Type: Application
    Filed: November 26, 2008
    Publication date: June 11, 2009
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Naoshige Itami, Tetsuya Fujikawa, Atuyuki Hoshino
  • Publication number: 20090141226
    Abstract: In a liquid crystal display device, liquid crystal molecules are oriented in a vertical direction to the first substrate and the second substrate by the first molecule orientation film and the second molecule orientation film, respectively, in a non-driving state. A structural pattern is formed so as to extend in a first direction parallel to a surface of the liquid crystal layer and so as to form, in a driving state, an electric field periodically changing in a second direction that is parallel to the liquid crystal layer and vertical to the first direction. The liquid crystal molecules substantially tilt in the first direction in the driving state.
    Type: Application
    Filed: November 11, 2008
    Publication date: June 4, 2009
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Shingo Kataoka, Arihiro Takeda, Takahiro Sasaki, Tsutomu Seino, Yoshio Koike, Hidefumi Yoshida, Yuichi Inoue, Kazutaka Hanaoka, Seiji Tanuma, Takatoshi Mayama, Kimiaki Nakamura, Hideo Chida, Seiji Doi, Tetsuya Fujikawa, Takashi Takagi, Hiroyasu Inoue
  • Publication number: 20090122245
    Abstract: There is provided an MVA type liquid crystal display device having high brightness and excellent display quality.
    Type: Application
    Filed: December 19, 2008
    Publication date: May 14, 2009
    Applicant: Sharp Kabushiki Kaisha
    Inventors: Katsunori Misaki, Tetsuya Fujikawa, Yoshihisa Taguchi, Kenichi Nagaoka, Manabu Sawasaki
  • Patent number: 7480019
    Abstract: The present invention is a method of manufacturing a liquid crystal display device, wherein light having an exposure energy is irradiated on the surface of a photo-sensitive resin layer having a predetermined film thickness, and a distribution of thermal deformation characteristics in the thickness direction (or the plane direction) of the photo-sensitive resin layer is formed, then heat treatment is performed to form random undulation (micro-grooves or micro-wrinkles) on the surface of the photo-sensitive resin layer.
    Type: Grant
    Filed: October 31, 2003
    Date of Patent: January 20, 2009
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Naoshige Itami, Tetsuya Fujikawa, Atuyuki Hoshino
  • Publication number: 20090008644
    Abstract: A TFT substrate comprises a substrate, a gate electrode and a lower electrode of a capacitor formed thereon, a first insulating layer formed thereon, a channel layer above the gate electrode and a lower layer of an upper electrode of the capacitor, a channel protection layer formed on an intermediate part of said channel layer and a capacitor protection layer formed on a connection region of the lower layer, source/drain electrodes formed on said channel layer and an upper layer of the upper electrode of the capacitor formed on the lower layer and covering the capacitor protection layer, a second insulating layer covering them, a first connection hole exposing the source electrode and a second connection hole exposing a connection region of said upper layer, which are penetrating the second insulating layer, and a pixel electrode formed thereon.
    Type: Application
    Filed: August 29, 2008
    Publication date: January 8, 2009
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Tetsuya Fujikawa, Seiji Doi
  • Patent number: 7471348
    Abstract: There is provided an MVA type liquid crystal display device having high brightness and excellent display quality.
    Type: Grant
    Filed: January 18, 2006
    Date of Patent: December 30, 2008
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Katsunori Misaki, Tetsuya Fujikawa, Yoshihisa Taguchi, Kenichi Nagaoka, Manabu Sawasaki
  • Publication number: 20080316406
    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: August 13, 2008
    Publication date: December 25, 2008
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Hiroyasu Inoue, Kenichi Nagaoka, Yuji Nakahata, Yoji Taniguchi, Tetsuya Fujikawa, Yohei Nakanishi, Kazutaka Hanaoka, Yuichi Inoue, Masakazu Shibasaki
  • Publication number: 20080303997
    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: May 15, 2008
    Publication date: December 11, 2008
    Applicant: 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: 7450206
    Abstract: A liquid crystal display device including a pair of substrates with a liquid crystal layer sandwiched between the pair of substrates. The liquid crystal layer includes a photopolymerizable component mixed therein, and there is a pixel electrode formed on one of the substrates. The pixel electrode includes at least two pixel slit areas separated by a liquid crystal domain boundary area, wherein each of the pixel slit areas includes a plurality of generally parallel slits therein. Further, an additional electrode, having the same potential as the pixel electrode, is formed in at least a portion of the liquid crystal domain boundary area without extending into any of the pixel slit areas.
    Type: Grant
    Filed: July 16, 2004
    Date of Patent: November 11, 2008
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Yuji Nakahata, Yoji Taniguchi, Tetsuya Fujikawa
  • Patent number: 7450212
    Abstract: The invention relates to a substrate for a liquid crystal display used as a display portion of an electronic apparatus and a liquid crystal display having the same and provides a substrate for a liquid crystal display which allows high display quality to be achieved and a liquid crystal display having the same. The substrate has a TFT substrate and a CF substrate provided opposite to each other, pillar spacers formed on the CF substrate to maintain a cell gap between the substrates, a region ? which is located in the neighborhood of the center of a display area and in which the pillar spacers are compressed in a first amount of compressive displacement when a predetermined pressure in a direction perpendicular to a substrate surface is applied, and a region ? which is located in the neighborhood of a picture-frame area outside the above region ? and in which the pillar spacers are compressed in a second amount of compressive displacement greater than the first amount of compressive displacement.
    Type: Grant
    Filed: February 17, 2005
    Date of Patent: November 11, 2008
    Assignees: Fujitsu Limited, AU Optronics Corporation
    Inventors: Manabu Sawasaki, Tetsuya Fujikawa
  • Patent number: 7432527
    Abstract: A TFT substrate comprises a substrate, a gate electrode and a lower electrode of a capacitor formed thereon, a first insulating layer formed thereon, a channel layer above the gate electrode and a lower layer of an upper electrode of the capacitor, a channel protection layer formed on an intermediate part of said channel layer and a capacitor protection layer formed on a connection region of the lower layer, source/drain electrodes formed on said channel layer and an upper layer of the upper electrode of the capacitor formed on the lower layer and covering the capacitor protection layer, a second insulating layer covering them, a first connection hole exposing the source electrode and a second connection hole exposing a connection region of said upper layer, which are penetrating the second insulating layer, and a pixel electrode formed thereon.
    Type: Grant
    Filed: March 10, 2006
    Date of Patent: October 7, 2008
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Tetsuya Fujikawa, Seiji Doi
  • Patent number: 7405781
    Abstract: A substrate for use in a liquid crystal display, including an insulating substrate cooperating with an oppositely arranged opposite substrate to hold a liquid crystal. A plurality of pixel regions are arranged on the insulating substrate in a matrix form, in each of which a switching element is formed. At least one resin color filter layer is formed on the pixel regions to cover the switching element. Additionally, at least one layer of the resin color filter layers of the plural colors has a cruciform-shaped pattern protruding to cover the switching elements of neighboring pixels when viewed in a direction of a normal of a substrate surface.
    Type: Grant
    Filed: February 9, 2006
    Date of Patent: July 29, 2008
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Atuyuki Hoshino, Shiro Hirota, Naoto Kondo, Tetsuya Fujikawa, Masahiro Kihara, Katsunori Misaki, Seiji Doi, Tomoshige Oda, Akira Komorita, Akihiro Matsui, Manabu Sawasaki, Masahiro Ikeda, Takashi Takagi, Tomonori Tanose, Takuya Saguchi, Hidetoshi Sukenori, Hiroyasu Inoue
  • Publication number: 20080165314
    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: February 19, 2008
    Publication date: July 10, 2008
    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: 7342617
    Abstract: The present invention relates to a liquid crystal display provided with an electrostatic protection element and an object of the present invention is to provide the liquid crystal display provided with superior redundancy and at the same time a sufficient protection function against static electricity in which relatively low voltage generates for a long period of time.
    Type: Grant
    Filed: June 24, 2003
    Date of Patent: March 11, 2008
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Yoshinori Tanaka, Tetsuya Fujikawa, Yasuhiro Nasu