Patents by Inventor Jin Hirosawa

Jin Hirosawa 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: 9235094
    Abstract: In one embodiment, a liquid crystal display device comprises a pixel electrode including a first main electrode disposed between a first line and a second line and extending like a belt in a first extending direction. A first counter electrode includes a second main electrode extending like a belt in the first extending direction, a second counter electrode having a third main electrode extending like a belt in the first extending direction. The second and third main electrodes are disposed on both sides of the first main electrode, and an initial alignment direction of the liquid crystal molecules is parallel with a direction passing through an interstice between the first end side of the first main electrode and the second line, and through an interstice between the second end side of the first main electrode and the first line.
    Type: Grant
    Filed: October 6, 2014
    Date of Patent: January 12, 2016
    Assignee: JAPAN DISPLAY INC.
    Inventors: Yusuke Morita, Jin Hirosawa, Arihiro Takeda, Nobuko Fukuoka, Keiji Tago, Kazuya Daishi
  • Patent number: 9217904
    Abstract: According to one embodiment, a liquid crystal display device includes, a first substrate including a switching element which is electrically connected to a gate line and a source line and includes a drain electrode opposed to a storage capacitance line, a pixel electrode which includes a main pixel electrode extending in a second direction and a sub-pixel electrode which extends in a first direction at a position inside a position above an edge of the drain electrode and is put in contact with the drain electrode, a second substrate including a common electrode, and a liquid crystal layer.
    Type: Grant
    Filed: May 30, 2013
    Date of Patent: December 22, 2015
    Assignee: Japan Display Inc.
    Inventors: Yusuke Morita, Jin Hirosawa, Hirokazu Morimoto, Masakatsu Kitani
  • Patent number: 9207510
    Abstract: In one embodiment, a liquid crystal display device includes a first substrate and a second substrate. The first substrate includes a first gate line and a second gate line respectively extending in a first direction. A main pixel electrode is arranged between the first gate line and the second gate line and extending in a second direction orthogonally crossing the first direction. A pair of sub-common electrodes respectively faces the first gate line and the second gate line through an insulating layer and extends in the first direction. The second substrate includes a main common electrode electrically connected with the sub-common electrode and arranged on both sides sandwiching the main pixel electrode. A liquid crystal layer is held between the first substrate and the second substrate.
    Type: Grant
    Filed: October 13, 2014
    Date of Patent: December 8, 2015
    Assignee: JAPAN DISPLAY INC.
    Inventors: Hirofumi Funakoshi, Jin Hirosawa
  • Publication number: 20150346572
    Abstract: According to one embodiment, a liquid crystal display device includes a first substrate includes a first pixel electrode which comprises a first contact portion and a first strip electrode with a first length, a second pixel electrode which comprises a second contact portion located on a same straight line with the first contact portion and a second strip electrode with a second length equal to the first length, and a third pixel electrode which comprises a third contact portion disposed at a position displaced from the same straight line of the first contact portion and a third strip electrode with a third length different from the first length, a second substrate, and a liquid crystal layer held between the first substrate and the second substrate.
    Type: Application
    Filed: May 19, 2015
    Publication date: December 3, 2015
    Applicant: Japan Display Inc.
    Inventor: Jin HIROSAWA
  • Publication number: 20150316822
    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: July 13, 2015
    Publication date: November 5, 2015
    Applicant: JAPAN DISPLAY INC.
    Inventors: Arihiro TAKEDA, Jin HIROSAWA, Tetsuya llZUKA, Hirokazu MORIMOTO
  • Publication number: 20150309376
    Abstract: A first substrate includes a gate line extending in a first direction, a first interlayer insulating film covering the gate line, a first common electrode formed on the first interlayer insulating film extending in a second direction crossing the first direction, a second interlayer insulating film covering the first common electrode, a source line extending in the second direction, and a third interlayer insulating film covering the source line. A pixel electrode includes a main pixel electrode extending in the second direction on the third interlayer insulating film A second common electrode includes a second main common electrode extending in the second direction on the third interlayer insulating film and facing the source line. The second common electrode is set to the same potential as the first common electrode. A first alignment film covers the pixel electrode and the second common electrode.
    Type: Application
    Filed: April 9, 2015
    Publication date: October 29, 2015
    Applicant: Japan Display Inc.
    Inventor: Jin HIROSAWA
  • Patent number: 9164330
    Abstract: According to one embodiment, a liquid crystal display includes a first substrate including main pixel electrodes, a second substrate including main common electrodes extending substantially in parallel to the main pixel electrodes and arranged on both sides of each of the main pixel electrodes as seen from above, 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 and 16 or less.
    Type: Grant
    Filed: March 5, 2013
    Date of Patent: October 20, 2015
    Assignee: Japan Display Inc.
    Inventors: Hitomi Hasegawa, Jin Hirosawa, Yusuke Morita, Hirokazu Morimoto, Arihiro Takeda
  • Patent number: 9164333
    Abstract: According to one embodiment, a liquid crystal display device includes a first common electrode including a first sub-common electrode extending along a gate line on a first interlayer insulation film, a pixel electrode which includes a first main pixel electrode extending in a second direction on a second interlayer insulation film, and a second common electrode which includes a second sub-common electrode extending in parallel to the first sub-common electrode on the second interlayer insulation film and has the same potential as the first common electrode. The first sub-common electrode is located on the pixel electrode side of a position overlapping the gate line. The second sub-common electrode is opposed to the gate line.
    Type: Grant
    Filed: March 10, 2014
    Date of Patent: October 20, 2015
    Assignee: Japan Display Inc.
    Inventors: Hitomi Hasegawa, Jin Hirosawa
  • Publication number: 20150293416
    Abstract: According to one embodiment, a liquid crystal display device includes a first substrate including a first source line and a second source line, a first main pixel electrode of a strip shape, a second main pixel electrode of a strip shape. The first substrate is configured such that a first distance between the first main pixel electrode and the first source line is less than a second distance between the first main pixel electrode and the second source line, and a third distance between the second main pixel electrode and the first source line is greater than a fourth distance between the second main pixel electrode and the second source line.
    Type: Application
    Filed: June 25, 2015
    Publication date: October 15, 2015
    Applicant: JAPAN DISPLAY INC.
    Inventor: Jin HIROSAWA
  • Patent number: 9151985
    Abstract: In one embodiment, a liquid crystal display device includes a first substrate and a second substrate. The first substrate includes a first source line and a second source line extending in a first direction, a main pixel electrode arranged between the first source line and a second source line and extending in the first direction, and a pair of first main common electrodes arranged on the first source line and the second source line interposing an insulating layer and extending in the first direction, respectively. The second substrate includes a pair of second main common electrode arranged above the first main common electrode and extending in the first direction, and the first main common electrode is connected with the second main common electrode. A liquid crystal layer is held between the first substrate and the second substrate.
    Type: Grant
    Filed: October 8, 2014
    Date of Patent: October 6, 2015
    Assignee: JAPAN DISPLAY INC.
    Inventors: Koji Yamamoto, Jin Hirosawa
  • Patent number: 9146434
    Abstract: A first substrate includes a first interlayer insulating film covering a switching element. A first main-common electrode is formed on the first interlayer insulating film. The first main-common electrode extends along a source line. A second interlayer insulating film covers the first main-common electrode. A second main-common electrode is formed on the second inter insulating film and extends so as to face the source line. The second main-common electrode is set to the same potential as the first main-common electrode. A main-pixel electrode connected with the switching element is formed on the second interlayer insulating film. A second substrate includes a third main-common electrode so as to face the second main-common electrode. The third main-common electrode is set to the same potential as the second main-common electrode.
    Type: Grant
    Filed: October 25, 2013
    Date of Patent: September 29, 2015
    Assignee: Japan Display Inc.
    Inventor: Jin Hirosawa
  • Publication number: 20150268524
    Abstract: A first interlayer insulating film is arranged on a gate line and a source line. A first common electrode includes a first sub-common electrode extending in the first direction on the first interlayer insulating film and facing the gate line. A second interlayer insulating film covers the first common electrode. A pixel electrode includes a first main pixel electrode extending in the second direction on the second interlayer insulating film. A second common electrode includes a second sub-common electrode and a second main common electrode and set to the same potential as the first common electrode. The second sub-common electrode extends on the second interlayer insulating film in the first direction so as to face the first sub-common electrode, and is cut out on a straight line along which the first main pixel electrode extends. The second main common electrode extends in the second direction facing the source line.
    Type: Application
    Filed: January 26, 2015
    Publication date: September 24, 2015
    Applicant: Japan Display Inc.
    Inventor: Jin HIROSAWA
  • Publication number: 20150261055
    Abstract: According to one embodiment, a liquid crystal display device includes a first substrate including a first wiring line, a second wiring line located on a first interlayer insulation film, a pixel electrode located on the first interlayer insulation film and including a main pixel electrode and a first sub-pixel electrode, a first common electrode located on a second interlayer insulation film and including a first main common electrode opposed to the second wiring line and a first sub-common electrode opposed to the first wiring line and the first sub-pixel electrode, a second substrate including a second common electrode, and a liquid crystal layer held between the first substrate and the second substrate.
    Type: Application
    Filed: June 2, 2015
    Publication date: September 17, 2015
    Applicant: JAPAN DISPLAY INC.
    Inventor: Jin HIROSAWA
  • Publication number: 20150261052
    Abstract: In one embodiment, a first substrate includes a sub-pixel electrode extending in a first direction, a first main pixel electrode connected with one end of the sub-pixel electrode and extending in a second direction orthogonally crossing the first direction, and a second main pixel electrode connected with the other end of the sub-pixel electrode and extending in the second direction. A second substrate includes first and second sub-common electrodes arranged on both sides sandwiching the sub-pixel electrode, a first main common electrode connected with the first sub-common electrode and extending along the second direction opposite to the extending direction of the first main pixel electrode on one end side of the sub-pixel electrode, and a second main common electrode connected with the second sub-common electrode and extending along the second direction opposite to the extending direction of the second main pixel electrode on the other end side of the sub-pixel electrode.
    Type: Application
    Filed: April 20, 2015
    Publication date: September 17, 2015
    Applicant: Japan Display Inc.
    Inventors: Yusuke Morita, Jin Hirosawa
  • Publication number: 20150261054
    Abstract: In one embodiment, a liquid crystal display device includes a first substrate and a second substrate. The first substrate includes a first gate line and a second gate line extending in a first direction, respectively. A first source line and a second source line extend in a second direction orthogonally crossing the first direction. A pixel electrode includes a first main pixel electrode in the shape of a belt located on an edge of the first source line and extending in the second direction, and a second main pixel electrode in the shape of a belt located on an edge of the second source line and extending in the second direction. A second substrate includes a main common electrode located between the first main pixel electrode and the second main pixel electrode and extending in the second direction.
    Type: Application
    Filed: June 1, 2015
    Publication date: September 17, 2015
    Applicant: Japan Display Inc.
    Inventors: Arihiro TAKEDA, Jin HIROSAWA
  • Patent number: 9134579
    Abstract: A liquid crystal display device includes first and second substrates. The first substrate includes a pixel electrode having a main pixel electrode in the shape of a belt and a first alignment film covering the pixel electrode. The first alignment film is alignment processed in a first alignment treatment direction substantially in parallel with an extending direction of the main pixel electrode. The second substrate includes a common electrode arranged on both sides sandwiching the pixel electrode and extending substantially in parallel with the extending direction of the main pixel electrode. A sub-common electrode extends in a direction crossing the extending direction of the main pixel electrode on one end side of the main pixel electrode located on a starting side of the first alignment treatment direction. A second alignment film is alignment processed in a second alignment treatment direction substantially in the same direction as the first alignment treatment direction.
    Type: Grant
    Filed: September 2, 2014
    Date of Patent: September 15, 2015
    Assignee: JAPAN DISPLAY INC.
    Inventor: Jin Hirosawa
  • Patent number: 9134577
    Abstract: A liquid crystal display device includes a first substrate including a T-shaped pixel electrode including a strip-shaped first main electrode positioned midway between a first source line and a second source line, and a strip-shaped sub-electrode, a second substrate including a counter-electrode which includes a strip-shaped second main electrode positioned above the first source line and the second source line, and a liquid crystal layer, wherein when an inter-electrode distance between the first main electrode and the second main electrode is L and a cell gap is GP, a formed angle ?, which is expressed by a relationship of tan ?=GP/L, is greater than a pre-tilt angle ? of a liquid crystal molecule.
    Type: Grant
    Filed: January 13, 2012
    Date of Patent: September 15, 2015
    Assignee: Japan Display Inc.
    Inventors: Nobuko Fukuoka, Arihiro Takeda, Jin Hirosawa
  • Patent number: 9134576
    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 a switching element electrically connected with the gate line and the source line. A first sub-common electrode extends in the first direction facing the gate line. A first main-common electrode is connected with the first sub-common electrode and extends in the second direction facing the source line. A pixel electrode includes a main-pixel electrode linearly extending in a direction different from the first and second directions. A second substrate includes a second main-common electrode extending in the second direction so as to face the first main-common electrode. The potential of the second main-common electrode is the same as the first main-common electrode.
    Type: Grant
    Filed: October 30, 2013
    Date of Patent: September 15, 2015
    Assignee: Japan Display Inc.
    Inventor: Jin Hirosawa
  • Patent number: 9116402
    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: Grant
    Filed: May 17, 2013
    Date of Patent: August 25, 2015
    Assignee: Japan Display Inc.
    Inventors: Arihiro Takeda, Jin Hirosawa, Tetsuya Ilzuka, Hirokazu Morimoto
  • Publication number: 20150234243
    Abstract: According to one embodiment, a liquid crystal display device, include a first substrate includes a first pixel electrode including m first strip electrodes, a second pixel electrode including m second strip electrodes, a third pixel electrode including n third strip electrodes, a fourth pixel electrode including m fourth strip electrodes, a fifth pixel electrode including m fifth strip electrodes, and a sixth pixel electrode including n sixth strip electrodes, m and n being positive integers and unequal to each other.
    Type: Application
    Filed: February 19, 2015
    Publication date: August 20, 2015
    Applicant: Japan Display Inc.
    Inventors: Atsuko OONO, Arihiro Takeda, Jin Hirosawa, Satoru Kawasaki, Yuji Maede, Saori Sugiyama