Patents by Inventor Hironao Tanaka

Hironao Tanaka 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: 10229645
    Abstract: A display device includes: pixels corresponding to respective colors arranged in matrix, wherein each pixel has a pixel circuit portion in which a circuit for display driving of the pixel is arranged and a pixel opening to be an area obtaining effective display light, the pixel openings of the pixels corresponding to at least one color have an area different from areas of the pixel openings of pixels corresponding to other colors.
    Type: Grant
    Filed: February 16, 2017
    Date of Patent: March 12, 2019
    Assignee: JAPAN DISPLAY INC.
    Inventors: Hidemasa Yamaguchi, Hironao Tanaka, Daisuke Ito
  • Publication number: 20180306955
    Abstract: An optical phase difference component includes a transparent base with a concave-convex pattern having concave portions and convex portions; a coating layer coating the concave portions and the convex portions of the concave-convex pattern; a gap defined between the convex portions of the concave-convex pattern coated with the coating layer; and a closing layer provided on the concave-convex pattern to connect tops of the convex portions of the concave-convex pattern and to close the gap. A refractive index n1 of each of the convex portions and a refractive index n2 of the coating layer at a wavelength of 550 nm satisfy n2?n1?0.8. The optical phase difference component has a phase difference property of reverse dispersion and a wide viewing angle.
    Type: Application
    Filed: June 27, 2018
    Publication date: October 25, 2018
    Applicant: JXTG NIPPON OIL & ENERGY CORPORATION
    Inventors: Masanao GOTO, Gorou SUZAKI, Hironao TANAKA
  • Publication number: 20180239202
    Abstract: Each of branch portions of a pixel electrode and inclined portions of data lines extends in a direction different from an x direction and a y direction in a pixel region and inclined with respect to the y direction. Further, a liquid crystal layer is orientated in a direction different from the x direction and the y direction in the pixel region and inclined with respect to the y direction.
    Type: Application
    Filed: April 25, 2018
    Publication date: August 23, 2018
    Applicant: Japan Display Inc.
    Inventors: Kenji Ogura, Hironao Tanaka, Hidemasa Yamaguchi
  • Publication number: 20180231815
    Abstract: A liquid crystal panel includes: first and second substrates arranged to be opposite each other at a predetermined gap; a liquid crystal layer filled between the first and second substrates; alignment films; a counter electrode pattern formed on the first substrate; and a pixel electrode pattern formed on the first substrate so as to have a plurality of electrode branches, the extension direction of which is bent at one bend point provided near an upper pixel portion from the center of a pixel region, and which are connected at the end portion of at least the upper pixel portion or lower pixel portion, wherein the extension direction of a slit formed near the upper pixel portion from the bend point from among slits formed in the pixel electrode pattern crosses the alignment direction of the liquid crystal layer at an angle of 7° or larger.
    Type: Application
    Filed: April 17, 2018
    Publication date: August 16, 2018
    Inventors: Yoshihiro Sakurai, Hironao Tanaka, Harumi Okuno, Takeo Koito
  • Patent number: 9989819
    Abstract: Each of branch portions of a pixel electrode and inclined portions of data lines extends in a direction different from an x direction and a y direction in a pixel region and inclined with respect to the y direction. Further, a liquid crystal layer is orientated in a direction different from the x direction and the y direction in the pixel region and inclined with respect to the y direction.
    Type: Grant
    Filed: January 11, 2016
    Date of Patent: June 5, 2018
    Assignee: JAPAN DISPLAY INC.
    Inventors: Kenji Ogura, Hironao Tanaka, Hidemasa Yamaguchi
  • Patent number: 9977287
    Abstract: A liquid crystal panel includes: first and second substrates arranged to be opposite each other at a predetermined gap; a liquid crystal layer filled between the first and second substrates; alignment films; a counter electrode pattern formed on the first substrate; and a pixel electrode pattern formed on the first substrate so as to have a plurality of electrode branches, the extension direction of which is bent at one bend point provided near an upper pixel portion from the center of a pixel region, and which are connected at the end portion of at least the upper pixel portion or lower pixel portion, wherein the extension direction of a slit formed near the upper pixel portion from the bend point from among slits formed in the pixel electrode pattern crosses the alignment direction of the liquid crystal layer at an angle of 7° or larger.
    Type: Grant
    Filed: April 28, 2014
    Date of Patent: May 22, 2018
    Assignee: Japan Display Inc.
    Inventors: Yoshihiro Sakurai, Hironao Tanaka, Harumi Okuno, Takeo Koito
  • Publication number: 20180052371
    Abstract: A liquid crystal panel includes: first and second substrates arranged to be opposite each other at a predetermined gap; a liquid crystal layer filled between the first and second substrates; alignment films; a counter electrode pattern formed on the first substrate; and a pixel electrode pattern formed on the first substrate so as to have a plurality of electrode branches, wherein the extension direction of at least one of slits formed at both ends from among slits formed between the plurality of electrode branches crosses the alignment direction of the liquid crystal layer at an angle of 7° or larger.
    Type: Application
    Filed: October 12, 2017
    Publication date: February 22, 2018
    Inventors: Yoshihiro Sakurai, Hironao Tanaka, Hidemasa Yamaguchi
  • Patent number: 9817285
    Abstract: A liquid crystal panel includes: first and second substrates arranged to be opposite each other at a predetermined gap; a liquid crystal layer filled between the first and second substrates; alignment films; a counter electrode pattern formed on the first substrate; and a pixel electrode pattern formed on the first substrate so as to have a plurality of electrode branches, wherein the extension direction of at least one of slits formed at both ends from among slits formed between the plurality of electrode branches crosses the alignment direction of the liquid crystal layer at an angle of 7° or larger.
    Type: Grant
    Filed: May 23, 2016
    Date of Patent: November 14, 2017
    Assignee: Japan Display Inc.
    Inventors: Yoshihiro Sakurai, Hironao Tanaka, Hidemasa Yamaguchi
  • Publication number: 20170199313
    Abstract: An optical phase difference component includes: a transparent base with a concave-convex pattern; gaps defined between convex portions of the concave-convex pattern; and a closing layer provided on the concave-convex pattern to connect the convex portions of the concave-convex pattern and to close the gaps. The phase difference property of the optical phase difference component is not reduced, even when the optical phase difference component is joined to another component with adhesive or when load is applied to the optical phase difference component.
    Type: Application
    Filed: March 27, 2017
    Publication date: July 13, 2017
    Applicant: JX NIPPON OIL & ENERGY CORPORATION
    Inventors: Maki FUKUDA, Hironao TANAKA, Suzushi NISHIMURA
  • Publication number: 20170162162
    Abstract: A display device includes: pixels corresponding to respective colors arranged in matrix, wherein each pixel has a pixel circuit portion in which a circuit for display driving of the pixel is arranged and a pixel opening to be an area obtaining effective display light, the pixel openings of the pixels corresponding to at least one color have an area different from areas of the pixel openings of pixels corresponding to other colors.
    Type: Application
    Filed: February 16, 2017
    Publication date: June 8, 2017
    Inventors: Hidemasa YAMAGUCHI, Hironao TANAKA, Daisuke ITO
  • Publication number: 20170102593
    Abstract: A liquid crystal panel includes: first and second substrates arranged to be opposite each other at a predetermined gap; a liquid crystal layer filled between the first and second substrates; alignment films; a counter electrode pattern formed on the first substrate; and a pixel electrode pattern formed on the first substrate so as to have a plurality of electrode branches, the pixel electrode pattern having a partial connection branch formed around a contact so as to transversely connect a plurality of electrode branches extending from the contact from among the plurality of electrode branches.
    Type: Application
    Filed: December 21, 2016
    Publication date: April 13, 2017
    Inventors: Yoshihiro Sakurai, Hironao Tanaka, Hidemasa Yamaguchi
  • Patent number: 9606381
    Abstract: A display device includes: pixels corresponding to respective plural colors arranged in matrix, wherein each pixel has a pixel circuit portion in which a circuit for display driving of the pixel is arranged and a pixel opening to be an area obtaining effective display light, the pixel openings of the pixels corresponding to at least one color have an area different from areas of the pixel openings of pixels corresponding to other colors, and the pixel circuit portions in respective pixels are arranged at equal pitches.
    Type: Grant
    Filed: January 14, 2013
    Date of Patent: March 28, 2017
    Assignee: Japan Display Inc.
    Inventors: Hidemasa Yamaguchi, Hironao Tanaka, Daisuke Ito
  • Patent number: 9551909
    Abstract: A liquid crystal panel includes: first and second substrates arranged to be opposite each other at a predetermined gap; a liquid crystal layer filled between the first and second substrates; alignment films; a counter electrode pattern formed on the first substrate; and a pixel electrode pattern formed on the first substrate so as to have a plurality of electrode branches, the pixel electrode pattern having a partial connection branch formed around a contact so as to transversely connect a plurality of electrode branches extending from the contact from among the plurality of electrode branches.
    Type: Grant
    Filed: October 21, 2015
    Date of Patent: January 24, 2017
    Assignee: Japan Display Inc.
    Inventors: Yoshihiro Sakurai, Hironao Tanaka, Hidemasa Yamaguchi
  • Publication number: 20160266455
    Abstract: A liquid crystal panel includes: first and second substrates arranged to be opposite each other at a predetermined gap; a liquid crystal layer filled between the first and second substrates; alignment films; a counter electrode pattern formed on the first substrate; and a pixel electrode pattern formed on the first substrate so as to have a plurality of electrode branches, wherein the extension direction of at least one of slits formed at both ends from among slits formed between the plurality of electrode branches crosses the alignment direction of the liquid crystal layer at an angle of 7° or larger.
    Type: Application
    Filed: May 23, 2016
    Publication date: September 15, 2016
    Inventors: Yoshihiro Sakurai, Hironao Tanaka, Hidemasa Yamaguchi
  • Patent number: 9366903
    Abstract: A liquid crystal panel includes: first and second substrates arranged to be opposite each other at a predetermined gap; a liquid crystal layer filled between the first and second substrates; alignment films; a counter electrode pattern formed on the first substrate; and a pixel electrode pattern formed on the first substrate so as to have a plurality of electrode branches, wherein the extension direction of at least one of slits formed at both ends from among slits formed between the plurality of electrode branches crosses the alignment direction of the liquid crystal layer at an angle of 7° or larger.
    Type: Grant
    Filed: December 18, 2009
    Date of Patent: June 14, 2016
    Assignee: Japan Display Inc.
    Inventors: Yoshihiro Sakurai, Hironao Tanaka, Hidemasa Yamaguchi
  • Publication number: 20160124278
    Abstract: Each of branch portions of a pixel electrode and inclined portions of data lines extends in a direction different from an x direction and a y direction in a pixel region and inclined with respect to the y direction. Further, a liquid crystal layer is orientated in a direction different from the x direction and the y direction in the pixel region and inclined with respect to the y direction.
    Type: Application
    Filed: January 11, 2016
    Publication date: May 5, 2016
    Inventors: Kenji Ogura, Hironao Tanaka, Hidemasa Yamaguchi
  • Patent number: 9280021
    Abstract: Each of branch portions 62ae of a pixel electrode 62a and inclined portions S1k of data lines S1 extends in a direction different from an x direction and a y direction in a pixel region PA and inclined with respect to the y direction. Further, a liquid crystal layer 203 is orientated in a direction different from the x direction and the y direction in the pixel region PA and inclined with respect to the y direction.
    Type: Grant
    Filed: March 27, 2009
    Date of Patent: March 8, 2016
    Assignee: JAPAN DISPLAY INC.
    Inventors: Kenji Ogura, Hironao Tanaka, Hidemasa Yamaguchi
  • Publication number: 20160041440
    Abstract: A liquid crystal panel includes: first and second substrates arranged to be opposite each other at a predetermined gap; a liquid crystal layer filled between the first and second substrates; alignment films; a counter electrode pattern formed on the first substrate; and a pixel electrode pattern formed on the first substrate so as to have a plurality of electrode branches, the pixel electrode pattern having a partial connection branch formed around a contact so as to transversely connect a plurality of electrode branches extending from the contact from among the plurality of electrode branches.
    Type: Application
    Filed: October 21, 2015
    Publication date: February 11, 2016
    Inventors: Yoshihiro Sakurai, Hironao Tanaka, Hidemasa Yamaguchi
  • Patent number: 9195102
    Abstract: A liquid crystal panel includes: first and second substrates arranged to be opposite each other at a predetermined gap; a liquid crystal layer filled between the first and second substrates; alignment films; a counter electrode pattern formed on the first substrate; and a pixel electrode pattern formed on the first substrate so as to have a plurality of electrode branches, the pixel electrode pattern having a partial connection branch formed around a contact so as to transversely connect a plurality of electrode branches extending from the contact from among the plurality of electrode branches.
    Type: Grant
    Filed: December 18, 2009
    Date of Patent: November 24, 2015
    Assignee: Japan Display Inc.
    Inventors: Yoshihiro Sakurai, Hironao Tanaka, Hidemasa Yamaguchi
  • Patent number: 9025125
    Abstract: A display device includes a display section, and a light barrier element. The light barrier element includes a pair of substrates, a liquid crystal layer that is provided between the pair of substrates and has a plurality of sub-regions that transmit or block light, and a plurality of spacers provided between the pair of substrates. The plurality of spacers are randomly arranged in part or all of a region in surfaces of the substrates.
    Type: Grant
    Filed: February 23, 2012
    Date of Patent: May 5, 2015
    Assignee: Japan Display Inc.
    Inventors: Yuzo Kanari, Hironao Tanaka, Amane Higashi, Harumi Okuno, Masayuki Ito