Patents by Inventor Arihiro Takeda

Arihiro Takeda 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: 8786790
    Abstract: In one embodiment, a liquid crystal display device includes a lens array unit having a cylindrical lens array constituted by a plurality of cylindrical lenses each having a lens surface and a generatrix corresponding to the lens surface. The lens surface is arranged in a line in a direction orthogonally crossing the generatrix. A first substrate is arranged at a back side of the lens array unit and includes a pixel electrode in a belt shape extending in a different direction from the direction in which the generatrix extends. The pixel electrode is formed in a V character shape. A second substrate is arranged between the lens array unit and the first substrate including a counter electrode in a belt shape commonly arranged on the pixel electrodes extending in a parallel direction to the pixel electrode.
    Type: Grant
    Filed: March 21, 2012
    Date of Patent: July 22, 2014
    Assignee: Japan Display Inc.
    Inventors: Keisuke Takano, Takashi Sasabayashi, Arihiro Takeda, Keiji Tago, Jin Hirosawa, Hitomi Hasegawa, Yusuke Morita, Hirokazu Morimoto
  • Publication number: 20140198274
    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: February 3, 2014
    Publication date: July 17, 2014
    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
  • Patent number: 8780302
    Abstract: According to one embodiment, a liquid crystal display device includes a main pixel electrode which extends in a second direction, a sub-pixel electrode which extends in a first direction and crosses the main pixel electrode, a color filter which includes a first aperture portion defined by a first edge surrounding a position opposed to cross points between the main pixel electrode and the sub-pixel electrode, main common electrodes which extend in the second direction on both sides of the main pixel electrode.
    Type: Grant
    Filed: November 4, 2013
    Date of Patent: July 15, 2014
    Assignee: Japan Display Inc.
    Inventors: Arihiro Takeda, Tomoko Kozuka, Jin Hirosawa
  • Publication number: 20140160417
    Abstract: According to one embodiment, a liquid crystal display device includes a first substrate including a pixel electrode including a contact portion and a main pixel electrode extending in a second direction from the contact portion. A width of the contact portion in a first direction crossing the second direction is greater than a width of the main pixel electrode in the first direction. The main pixel electrode includes a first portion which is located on a side close to the contact portion and has a first width in the first direction, and a second portion which is located on a side remoter from the contact portion than the first portion in the second direction and has a second width in the first direction which is smaller than the first width.
    Type: Application
    Filed: December 5, 2013
    Publication date: June 12, 2014
    Applicant: Japan Display Inc.
    Inventors: Yusuke MORITA, Jin HIROSAWA, Hirokazu MORIMOTO, Arihiro TAKEDA
  • Patent number: 8743332
    Abstract: In one embodiment, a first substrate includes a pixel electrode having a first main electrode in a belt-like shape extending along a first cross line direction which crosses at an acute angle in a counterclockwise direction with respect to an initial alignment direction of liquid crystal molecules, and a second main electrode in the belt-like shape extending along a second cross line direction which crosses at an acute angle in a clockwise direction with respect to the initial alignment direction of the liquid crystal molecules. A second substrate includes a counter electrode having a pair of third main electrodes in the belt-like shape arranged above a pair of regions sandwiching the first main electrode extending along a first cross line direction and a pair of fourth main electrodes in the belt-like shape arranged above a pair of regions sandwiching the second main electrode extending along the second cross line direction.
    Type: Grant
    Filed: December 29, 2011
    Date of Patent: June 3, 2014
    Assignee: Japan Display Inc.
    Inventors: Keisuke Takano, Arihiro Takeda, Takashi Sasabayashi, Nobuko Fukuoka, Yusuke Morita, Jin Hirosawa, Hitomi Hasegawa, Yoshitaka Yamada, Keiji Tago, Hirokazu Morimoto
  • Patent number: 8743036
    Abstract: A liquid crystal display has a pair of substrates with liquid crystal sealed between them. A polymer layer regulates directions in which the liquid crystal molecules tilt. A plurality of gate bus lines and a plurality of drain bus lines are provided on one of the substrates. Color filters and a pixel electrode are provided on the substrate. The pixel electrode includes a first sub-pixel electrode and a second sub-pixel electrode. A common electrode is provided on the other substrate. A first and a second thin film transistor are connected to the first sub-pixel electrode. The first thin film transistors is connected to a first gate bus line, and the second thin film transistor is connected to a second bus line.
    Type: Grant
    Filed: February 8, 2012
    Date of Patent: June 3, 2014
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Takashi Sasabayashi, Arihiro Takeda, Hiroyasu Inoue, Kazuya Ueda, Yoshio Koike, Hideaki Tsuda, Yasutoshi Tasaka, Hidefumi Yoshida, Kunihiro Tashiro, Tsuyoshi Kamada, Kimiaki Nakamura
  • Publication number: 20140063391
    Abstract: According to one embodiment, a liquid crystal display device includes a main pixel electrode which extends in a second direction, a sub-pixel electrode which extends in a first direction and crosses the main pixel electrode, a color filter which includes a first aperture portion defined by a first edge surrounding a position opposed to cross points between the main pixel electrode and the sub-pixel electrode, main common electrodes which extend in the second direction on both sides of the main pixel electrode.
    Type: Application
    Filed: November 4, 2013
    Publication date: March 6, 2014
    Applicant: Japan Display Inc.
    Inventors: Arihiro TAKEDA, Tomoko Kozuka, Jin Hirosawa
  • Publication number: 20140055430
    Abstract: A liquid crystal display device includes a first substrate including gate lines and a storage capacitance line, a first source line and a second source line, a main pixel electrode which has a strip shape, a sub-pixel electrode which is continuous with the main pixel electrode and has a strip shape extending toward the first source line and the second source line, and a first alignment film, a second substrate including second main common electrodes extending on both sides of the main pixel electrode, second sub-common electrodes which are continuous with the second main common electrodes and extend on both sides of the sub-pixel electrode, and a second alignment film, and a liquid crystal layer held between the first substrate and the second substrate.
    Type: Application
    Filed: October 8, 2013
    Publication date: February 27, 2014
    Applicant: Japan Display Inc.
    Inventors: Jin Hirosawa, Arihiro Takeda, Hirokazu Morimoto
  • Publication number: 20140028935
    Abstract: A liquid crystal display including first and second substrates arranged opposite to each other to form a gap, with first and second alignment films provided on the first and second substrates, respectively. A cured material is provided on at least one of the first and second alignment films, and a liquid crystal layer of liquid crystal molecules is provided in the gap. The display includes a pixel electrode with a plurality of elongated members arranged with spaces therebetween, wherein the plurality of elongated members are electrically connected to each other, and a common electrode configured to apply a voltage to the liquid crystal layer in cooperation with the pixel electrode. The plurality of elongated members include first, second, third and fourth elongated members extending, respectively, in first, second, third and fourth directions in plan view. The cured material regulates alignment directions of the liquid crystal molecules.
    Type: Application
    Filed: July 31, 2013
    Publication date: January 30, 2014
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Kazutaka Hanaoka, Seiji Tanuma, Yohei Nakanishi, Kazuya Ueda, Shingo Kataoka, Takahiro Sasaki, Arihiro Takeda, Hideaki Tsuda, Takatoshi Mayama, Yuichi Inoue, Norio Sugiura
  • Patent number: 8638403
    Abstract: A liquid crystal display device is provided which has a pair of substrates and a liquid crystal layer sandwiched between the pair of substrates, in which liquid crystal molecules are vertically aligned with respect to the substrates when no voltage is applied between the substrates and the liquid crystal molecules tilt in a plurality of directions to be almost parallel to the substrates by applying a voltage between the substrates. In the liquid crystal layer, when the voltage is applied, a proportion of a region where the liquid crystal molecules tilt in a direction of 0 degrees to 180 degrees is different from a proportion of a region where the liquid crystal molecules tilt in a direction of 180 degrees to 360 degrees with the angle being defined counterclockwise with the right direction on a screen being 0 degrees.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: January 28, 2014
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Hidefumi Yoshida, Takashi Sasabayashi, Arihiro Takeda, Hideo Chida, Yoshio Koike, Yasutoshi Tasaka
  • Publication number: 20140016066
    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: September 18, 2013
    Publication date: January 16, 2014
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Shingo Kataoka, Arihiro Takeda, Takahiro Sasaki, Tsutomu Seino, Yoshio Koike, Hidefumi Yoshida, Yuichi Inoue, Kazutaka Hanaoka, Seji Tanuma, Takatoshi Mayama, Kimiaki Nakamura, Hideo Ochida, Seiji Doi, Tetsuya Fujikawa, Takashi Takagi, Hiroyasu Inoue
  • Patent number: 8605244
    Abstract: According to one embodiment, a liquid crystal display device includes a main pixel electrode which extends in a second direction, a sub-pixel electrode which extends in a first direction and crosses the main pixel electrode, a color filter which includes a first aperture portion defined by a first edge surrounding a position opposed to cross points between the main pixel electrode and the sub-pixel electrode, main common electrodes which extend in the second direction on both sides of the main pixel electrode.
    Type: Grant
    Filed: May 11, 2012
    Date of Patent: December 10, 2013
    Assignee: Japan Display Inc.
    Inventors: Arihiro Takeda, Tomoko Kozuka, Jin Hirosawa
  • Publication number: 20130314635
    Abstract: An array substrate includes a gate line extending in a first direction, a source line extending in a second direction orthogonally crossing the first direction and an auxiliary capacitance line having a trunk portion extending in the first direction so as to cross the source line and a branch portion branched from the trunk portion and extending along the source line. A switching element includes a drain line arranged under the auxiliary capacitance line so as to face the trunk portion and the branch portion thereof. A pixel electrode includes a main pixel electrode extending substantially in parallel to the source line and a contact portion electrically connected with the drain line. A counter substrate includes a couple of main common electrodes extending substantially in parallel to the main pixel electrode on the both sides sandwiching the main pixel electrode.
    Type: Application
    Filed: May 17, 2013
    Publication date: November 28, 2013
    Applicant: Japan Disply Inc.
    Inventors: Arihiro TAKEDA, Jin Hirosawa, Tetsuya IIzuka, Hirokazu Morimoto
  • Patent number: 8570477
    Abstract: A substrate for a liquid crystal display device, including a pixel electrode formed on the substrate, wherein the pixel electrode includes a micro-cutout pattern defined by a plurality of micro-cutouts extending in four different directions with respect to an extension direction of a rough structural pattern. The substrate also includes a first electrode extending in a first direction, a second electrode extending in a second direction that is approximately perpendicular to the first direction, and a contact hole that electrically connects the pixel electrode and the first electrode. A portion of the rough structural pattern and/or a portion of the micro-cutout pattern overlap the first electrode. Also disclosed is a liquid crystal display device including such a substrate.
    Type: Grant
    Filed: September 13, 2012
    Date of Patent: October 29, 2013
    Assignee: 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
  • Patent number: 8553188
    Abstract: A liquid crystal display device comprising a liquid crystal layer including liquid crystal molecules provided between a first substrate and a second substrate; pixels forming a display area; electrodes for applying a voltage across the liquid crystal layer within each of the pixels; a plurality of domain regulating structures for dividing orientations of the liquid crystal molecules and forming multiple domains within each of the pixels, when a predetermined voltage is applied across the liquid crystal layer within each of the pixels. The device also includes a structure which is formed in an outer area located next to the display area, but that does not overlap the display area, and is substantially the same as at least one of the plurality of domain regulating structures.
    Type: Grant
    Filed: January 25, 2012
    Date of Patent: October 8, 2013
    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: 20130242214
    Abstract: According to one embodiment, a liquid crystal display includes a first substrate including a main pixel electrode, a second substrate including a main common electrode extending substantially in parallel to the main pixel electrode on both sides of the main pixel electrode, and a liquid crystal layer including liquid crystal molecules held between the first substrate and the second substrate. A horizontal inter-electrode distance in a first direction between the main pixel electrode and the main common electrode is in a range of 11 ?m or more and 13 ?m or less, and a dielectric constant anisotropy of the liquid crystal layer is 10 or more.
    Type: Application
    Filed: March 5, 2013
    Publication date: September 19, 2013
    Inventors: Hitomi HASEGAWA, Jin Hirosawa, Yusuke Morita, Hirokazu Morimoto, Arihiro Takeda
  • Patent number: 8531634
    Abstract: A liquid crystal display including a pair of substrates arranged opposite to each other to form a gap; spaced vertical alignment films formed on the substrate in the gap; a cured material formed on at least one of the alignment films in the gap; and a liquid crystal layer of liquid crystal molecules. The display also includes a pixel electrode formed on one of the substrates in a pixel region and having either a plurality of elongated members arranged with spaces therebetween and connected by a connecting member or a plurality of elongated openings arranged in patterns. Finally, the cured material is at least formed on the vertical alignment films so that an alignment direction of at least the liquid crystal molecules adjacent the alignment films is regulated.
    Type: Grant
    Filed: November 22, 2010
    Date of Patent: September 10, 2013
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Kazutaka Hanaoka, Seiji Tanuma, Yohei Nakanishi, Kazuya Ueda, Shingo Kataoka, Takahiro Sasaki, Arihiro Takeda, Hideaki Tsuda, Takatoshi Mayama, Yuichi Inoue, Norio Sugiura
  • Publication number: 20130182207
    Abstract: According to one embodiment, a display device includes a first substrate unit, a second substrate unit, a display layer, and a sealing portion. The first substrate unit includes a first substrate, a display electrode, a terminal portion, and a first insulating layer. The first substrate has a first major surface. The first major surface has a display region and a peripheral region. The display electrode is provided in the display region. The terminal portion is provided in the peripheral region and electrically connected to the display electrode. The first insulating layer is provided on the display and peripheral regions. The second substrate unit faces the first major surface. The display layer is provided between the display electrode and the second substrate unit. The sealing portion is provided between the first and second substrate units. The sealing portion surrounds the display layer and contacts the first insulating layer.
    Type: Application
    Filed: July 19, 2012
    Publication date: July 18, 2013
    Applicant: JAPAN DISPLAY CENTRAL INC.
    Inventors: Nobuko FUKUOKA, Arihiro TAKEDA
  • Publication number: 20130162921
    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: September 13, 2012
    Publication date: June 27, 2013
    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
  • Patent number: 8471994
    Abstract: A liquid crystal display device including first and second substrates, with a liquid crystal layer sealed therebetween; and first and second electrodes formed, respectively, on the first and second substrates. A first molecule orientation film is formed on the first substrate so as to cover the first electrode and a second molecule orientation film formed on the second substrate so as to cover the second electrode. A polarizer with a light absorption axis P is provided outside of the first substrate, and an analyzer with a light absorption axis A is provided outside of the second substrate. The light absorption axis A crosses the light absorption axis P. A plurality of micro structures are associated with at least one of the first and second electrodes, wherein the micro structures are obliquely arranged with respect to the light absorption axis P and the light absorption axis A.
    Type: Grant
    Filed: March 18, 2011
    Date of Patent: June 25, 2013
    Assignee: 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