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).

  • Publication number: 20210294135
    Abstract: A liquid crystal panel is provided and includes first and second substrates with liquid crystal layer therebetween; and first electrode in display region; second electrode disposed between first electrode and first substrate; and alignment film having alignment direction, wherein first electrode has: pair of electrode branches; slit between pair of electrode branches; first and second connections connecting pair of electrode branches; wherein first electrode has areas including first and second bent portions, main portion disposed between first and second bent portions, wherein first bent portion is adjacent to contact hole of first electrode, wherein first and second bent portions are bent relative to main portion, and wherein direction of first bent portion is substantially parallel to direction of second bent portion.
    Type: Application
    Filed: June 4, 2021
    Publication date: September 23, 2021
    Inventors: Yoshihiro SAKURAI, Hironao TANAKA, Harumi OKUNO, Takeo KOITO
  • Patent number: 11029567
    Abstract: A liquid crystal panel includes pixels arranged in first and second directions and having a pixel region and including: first and second electrodes; and an alignment film having an alignment direction, wherein the first electrode has: a plurality of electrode branches each having first and second ends in the first direction; a slit between adjacent two branches; a first connection connecting the first ends; a second connection connecting the second ends; and a contact hole adjacent to second connection, wherein the first electrode has areas including: a main portion; and a bent portion that is adjacent to the contact hole and that includes the second end, the bent portion being bent relative to main portion at an angle not less than 7 degrees with respect to alignment direction, wherein an area ratio of the bent portion relative to entire area of the pixel region is not more than 50%.
    Type: Grant
    Filed: June 3, 2019
    Date of Patent: June 8, 2021
    Assignee: Japan Display Inc.
    Inventors: Yoshihiro Sakurai, Hironao Tanaka, Harumi Okuno, Takeo Koito
  • Patent number: 10896653
    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: January 29, 2019
    Date of Patent: January 19, 2021
    Assignee: Japan Display Inc.
    Inventors: Hidemasa Yamaguchi, Hironao Tanaka, Daisuke Ito
  • Publication number: 20200026132
    Abstract: A display device is provided and includes first and second substrates; a liquid crystal layer filled between the first and second substrates; a counter electrode pattern formed on the first substrate; scanning lines extending in a first direction; signal lines; and a first pixel electrode pattern and a second pixel electrode pattern formed on the first substrate, wherein the first pixel electrode pattern and the second pixel electrode pattern are located in line symmetry with respect to a first scanning line of the scanning lines.
    Type: Application
    Filed: September 27, 2019
    Publication date: January 23, 2020
    Inventors: Yoshihiro SAKURAI, Hironao TANAKA, Hidemasa YAMAGUCHI
  • Publication number: 20190310526
    Abstract: A liquid crystal display device including first and second substrates; a liquid crystal layer arranged between the first and second substrates; a plurality of pixel regions each surrounded by a signal line and a scanning line; a counter electrode arranged on the first substrate; and a pixel electrode arranged on the first substrate, the pixel electrode including a plurality of electrode branches, a plurality of slits formed between the electrode branches, and a protrusion protruding in a first direction in which the scanning line extends, wherein at least one of the slits extends in a second direction in which the signal line extends.
    Type: Application
    Filed: June 24, 2019
    Publication date: October 10, 2019
    Inventors: Yoshihiro SAKURAI, Hironao TANAKA, Hidemasa YAMAGUCHI
  • Patent number: 10429705
    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 21, 2016
    Date of Patent: October 1, 2019
    Assignee: Japan Display Inc.
    Inventors: Yoshihiro Sakurai, Hironao Tanaka, Hidemasa Yamaguchi
  • Publication number: 20190293977
    Abstract: A liquid crystal panel includes pixels arranged in first and second directions and having a pixel region and including: first and second electrodes; and an alignment film having an alignment direction, wherein the first electrode has: a plurality of electrode branches each having first and second ends in the first direction; a slit between adjacent two branches; a first connection connecting the first ends; a second connection connecting the second ends; and a contact hole adjacent to second connection, wherein the first electrode has areas including: a main portion; and a bent portion that is adjacent to the contact hole and that includes the second end, the bent portion being bent relative to main portion at an angle not less than 7 degrees with respect to alignment direction, wherein an area ratio of the bent portion relative to entire area of the pixel region is not more than 50%.
    Type: Application
    Filed: June 3, 2019
    Publication date: September 26, 2019
    Inventors: Yoshihiro SAKURAI, Hironao TANAKA, Harumi OKUNO, Takeo KOITO
  • Patent number: 10408984
    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: Grant
    Filed: March 27, 2017
    Date of Patent: September 10, 2019
    Assignee: JX NIPPON OIL AND ENERGY CORPORATION
    Inventors: Maki Fukuda, Hironao Tanaka, Suzushi Nishimura
  • Patent number: 10330995
    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: October 12, 2017
    Date of Patent: June 25, 2019
    Assignee: Japan Display Inc.
    Inventors: Yoshihiro Sakurai, Hironao Tanaka, Hidemasa Yamaguchi
  • Patent number: 10310337
    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: April 25, 2018
    Date of Patent: June 4, 2019
    Assignee: JAPAN DISPLAY INC.
    Inventors: Kenji Ogura, Hironao Tanaka, Hidemasa Yamaguchi
  • Patent number: 10310331
    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 17, 2018
    Date of Patent: June 4, 2019
    Assignee: Japan Display Inc.
    Inventors: Yoshihiro Sakurai, Hironao Tanaka, Harumi Okuno, Takeo Koito
  • Publication number: 20190156782
    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: January 29, 2019
    Publication date: May 23, 2019
    Inventors: Hidemasa YAMAGUCHI, Hironao TANAKA, Daisuke ITO
  • 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