Patents by Inventor Hirokazu Morimoto

Hirokazu Morimoto 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: 10101605
    Abstract: According to one embodiment, a display device includes a display panel configured to hold a liquid crystal layer between a first substrate and a second substrate, a cover member positioned at a side of the second substrate of the display panel, a first optical element positioned at an outer surface side of the first substrate, and a second optical element positioned between the second substrate and the cover member, bonded to an inner surface of the cover member but not bonded to the second substrate.
    Type: Grant
    Filed: January 11, 2017
    Date of Patent: October 16, 2018
    Assignee: JAPAN DISPLAY INC.
    Inventors: Kayoko Miyazaki, Keiji Tago, Hirokazu Morimoto
  • Patent number: 9810957
    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: July 13, 2015
    Date of Patent: November 7, 2017
    Assignee: Japan Display Inc.
    Inventors: Arihiro Takeda, Jin Hirosawa, Tetsuya Iizuka, Hirokazu Morimoto
  • Patent number: 9798198
    Abstract: According to one embodiment, a liquid crystal display device includes a first interlayer insulation film located above a first gate line and a second gate line, a first common electrode extending over the first interlayer insulation film, a second interlayer insulation film covering the first common electrode, and a first pixel electrode disposed on the second interlayer insulation film. The first common electrode extends, from a position opposed to the first pixel electrode, beyond the source line in the first direction and beyond the gate line in the second direction.
    Type: Grant
    Filed: February 26, 2014
    Date of Patent: October 24, 2017
    Assignee: Japan Display Inc.
    Inventors: Keisuke Takano, Jin Hirosawa, Arihiro Takeda, Hirokazu Morimoto
  • Patent number: 9684200
    Abstract: A liquid crystal display device includes a first substrate, a second substrate including an insulative substrate and a color filter layer formed on that side of the insulative substrate, which is opposed to the first substrate, the color filter layer including a first color filter of red, a third color filter of blue which is spaced apart from the first color filter, a fifth color filter of red which is spaced apart from the third color filter, a second color filter which is located between the first color filter and the third color filter and has a color which is different from red and blue, and a fourth color filter which is located between the third color filter and the fifth color filter and has a color which is different from red and blue, and a liquid crystal layer.
    Type: Grant
    Filed: July 3, 2014
    Date of Patent: June 20, 2017
    Assignee: Japan Display Inc.
    Inventors: Tomoko Kozuka, Keiji Tago, Hirokazu Morimoto
  • Publication number: 20170123261
    Abstract: According to one embodiment, a display device includes a display panel configured to hold a liquid crystal layer between a first substrate and a second substrate, a cover member positioned at a side of the second substrate of the display panel, a first optical element positioned at an outer surface side of the first substrate, and a second optical element positioned between the second substrate and the cover member, bonded to an inner surface of the cover member but not bonded to the second substrate.
    Type: Application
    Filed: January 11, 2017
    Publication date: May 4, 2017
    Applicant: Japan Display Inc.
    Inventors: Kayoko MIYAZAKI, Keiji TAGO, Hirokazu MORIMOTO
  • Patent number: 9581857
    Abstract: According to one embodiment, a display device includes a display panel configured to hold a liquid crystal layer between a first substrate and a second substrate, a cover member positioned at a side of the second substrate of the display panel, a first optical element positioned at an outer surface side of the first substrate, and a second optical element positioned between the second substrate and the cover member, bonded to an inner surface of the cover member but not bonded to the second substrate.
    Type: Grant
    Filed: September 11, 2014
    Date of Patent: February 28, 2017
    Assignee: Japan Display Inc.
    Inventors: Kayoko Miyazaki, Keiji Tago, Hirokazu Morimoto
  • Patent number: 9436042
    Abstract: In a method of manufacturing a liquid crystal display device, a process for forming a first substrate includes the steps; forming a first wiring electrically connected with a switching element and extending in a first direction, forming an insulating film covering the first wiring, painting an electrically conductive film including electrically conductive material on the insulating film, and forming a second wiring electrically connected with the switching element extending in a second direction orthogonally crossing the first direction, and a pixel electrode electrically connected with the switching element apart from the second wiring by patterning the electrically conductive film. A second substrate is formed by forming a main common electrode extending in the second direction. A liquid crystal display panel is manufactured by holding liquid crystal material between the first substrate and the second substrate while the main common electrode faces the second wiring.
    Type: Grant
    Filed: April 29, 2013
    Date of Patent: September 6, 2016
    Assignee: JAPAN DISPLAY INC.
    Inventors: Tomoko Kozuka, Hirokazu Morimoto
  • Patent number: 9424786
    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: Grant
    Filed: October 8, 2013
    Date of Patent: August 23, 2016
    Assignee: Japan Display Inc.
    Inventors: Jin Hirosawa, Arihiro Takeda, Hirokazu Morimoto
  • Patent number: 9341900
    Abstract: According to one embodiment, a liquid crystal display device includes a first substrate including a plurality of first signal lines disposed with a first pitch along a second direction, a plurality of second signal lines disposed with a second pitch along a first direction, and a first electrode including an n-number of first main electrodes (n is an integer of 2 or more), a second substrate including a second electrode including a plurality of second main electrodes disposed with a third pitch along the first direction, wherein an n-number of times the third pitch is substantially equal to the second pitch, and any one of the second main electrodes is located above each of the second signal lines.
    Type: Grant
    Filed: July 5, 2012
    Date of Patent: May 17, 2016
    Assignee: JAPAN DISPLAY INC.
    Inventors: Arihiro Takeda, Hirokazu Morimoto, Jin Hirosawa
  • Publication number: 20160077389
    Abstract: According to one embodiment, a liquid crystal display device includes a first substrate including a first insulative substrate, a gate line, a source line, a switching element, a pixel electrode, and a common electrode a second substrate including a second insulative substrate, a light shield layer disposed on that side of the second insulative substrate, which is opposed to the first substrate, and partitioning the pixels, and a shield electrode stacked on that side of the light shield layer, which is opposed to the first substrate, and formed of a metallic material, and a liquid crystal layer held between the first substrate and the second substrate.
    Type: Application
    Filed: August 14, 2015
    Publication date: March 17, 2016
    Applicant: Japan Display Inc.
    Inventors: Arihiro TAKEDA, Hirokazu MORIMOTO, Shoji HINATA
  • Patent number: 9280016
    Abstract: According to one embodiment, a liquid crystal display device includes a first substrate including a transmissive pixel electrode disposed in a transmissive display area, and a reflective pixel electrode with a planar plate shape which is disposed in a reflective display area, a second substrate including a common electrode, a liquid crystal layer being configured to have a less thickness in the reflective display area than in the transmissive display area, to impart a phase difference of ΒΌ wavelength to light passing at an OFF time in the reflective display area, and to impart no phase difference to light passing at an ON time in the reflective display area, and a retardation plate disposed between a second polarizer and the second substrate in the reflective display area.
    Type: Grant
    Filed: February 3, 2014
    Date of Patent: March 8, 2016
    Assignee: Japan Display Inc.
    Inventors: Keiji Tago, Hirokazu Morimoto
  • Patent number: 9244322
    Abstract: According to one embodiment, a liquid crystal display device includes a first substrate including an interlayer insulation film covering a first wiring line, a second wiring line and a third wiring line on the interlayer insulation film, and a first electrode which is located between the second wiring line and the third wiring line on the interlayer insulation film, is spaced apart from the second wiring line and the third wiring line, a second substrate including a second electrode which is opposed to each of the second wiring line and the third wiring line, and a liquid crystal layer between the first substrate and the second substrate.
    Type: Grant
    Filed: May 15, 2012
    Date of Patent: January 26, 2016
    Assignee: JAPAN DISPLAY INC.
    Inventors: Tomoko Kozuka, Hirokazu Morimoto, Arihiro Takeda
  • 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
  • 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
  • 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: 9140938
    Abstract: In one embodiment, a first substrate includes a gate line, a source line, a switching element electrically connected with the gate line and the source line, and a pixel electrode including a sub-pixel electrode electrically connected with the switching element in the shape of a belt, and a main pixel electrode electrically connected with the sub-pixel electrode. A first alignment film covers the pixel electrode. A second substrate includes a common electrode having a pair of main common electrodes arranged on both sides sandwiching the main pixel electrode. A second alignment film covers the common electrode. A liquid crystal layer including liquid crystal molecules is held between the first substrate and the second substrate. Volume resistivity values of the first and second alignment films are lower than that of the liquid crystal layer.
    Type: Grant
    Filed: January 25, 2013
    Date of Patent: September 22, 2015
    Assignee: Japan Display Inc.
    Inventors: Hitomi Hasegawa, Hirokazu Morimoto
  • 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
  • Patent number: 9086602
    Abstract: In one embodiment, a first substrate includes a main pixel electrode and a first alignment film formed on the main pixel electrode having vertical alignment characteristics. A second substrate includes a pair of main common electrodes and a second alignment film formed on the main common electrodes having vertical alignment characteristics. A liquid crystal layer is held between the first substrate and the second substrate having positive dielectric anisotropy. The main pixel electrode is arranged extending in a first direction. The pair of main common electrodes is arranged in the first direction, respectively, so as to sandwich the main pixel electrode.
    Type: Grant
    Filed: July 11, 2012
    Date of Patent: July 21, 2015
    Assignee: Japan Display Inc.
    Inventors: Keisuke Takano, Jin Hirosawa, Arihiro Takeda, Hirokazu Morimoto
  • Patent number: 9052555
    Abstract: In one embodiment, a first substrate is provided with a pixel electrode including a contact portion, a pair of main pixel electrodes extending in a first direction from the contact portion, a sub-pixel electrode arranged between the contact portion and an end of the extending main pixel electrodes and extending in a second direction so as to connect the pair of main pixel electrodes. A second substrate is provided with a common electrode including first and second main common electrodes sandwiching the pair of the main pixel electrodes, a third main common electrode arranged substantially in the center between the pair of main pixel electrodes and extending in parallel with the first and second main common electrodes, and a sub-common electrode arranged between the contact portion and the sub-pixel electrode and connected with the first, second and third main common electrodes extending in the second direction.
    Type: Grant
    Filed: December 26, 2012
    Date of Patent: June 9, 2015
    Assignee: JAPAN DISPLAY INC.
    Inventors: Masato Kesho, Hirokazu Morimoto, Kazuhiro Takahashi, Jin Hirosawa
  • Patent number: 9019447
    Abstract: A liquid crystal display device comprising: a liquid crystal cell including a quadrilateral display surface and a liquid crystal layer enclosed between glass substrates and controlling light entering from a second surface side and exiting to a first surface side; a first polarizing plate including a polarizer having an absorption axis and adhered to the first surface side with an adhesive layer; and a second polarizing plate including a polarizer having an absorption axis and adhered to the second surface side with an adhesive layer such that one of the polarizing plates including the polarizer with a larger maximum dimension in an absorption axis direction on the display surface is adhered to the glass substrate with an adhesive layer having higher adhesion strength to the glass substrate than the adhesive layer of other polarizing plates including the polarizer with a smaller maximum dimension in the absorption axis direction.
    Type: Grant
    Filed: November 23, 2012
    Date of Patent: April 28, 2015
    Assignee: Japan Display Inc.
    Inventors: Kayoko Miyazaki, Keiji Tago, Hirokazu Morimoto