Patents by Inventor Mitsutaka Okita

Mitsutaka Okita 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: 20190113786
    Abstract: According to one embodiment, a display device includes a first substrate, a second substrate, a sealant, a liquid crystal layer, an organic insulating film, an alignment film and an inorganic insulating film. The second substrate is opposed to the first substrate. The sealant attaches the first substrate and the second substrate to each other. The liquid crystal layer is arranged between the first substrate and the second substrate. The organic insulating film, the alignment film and the inorganic insulating film are provided on the first substrate. The alignment film contacts the liquid crystal layer. The inorganic insulating film is located between the alignment film and the organic insulating film. At least pan of the alignment film contacts the organic insulating film.
    Type: Application
    Filed: December 12, 2018
    Publication date: April 18, 2019
    Applicant: Japan Display Inc.
    Inventors: Tetsuya KOJIMA, Hirofumi Wakemoto, Mitsutaka Okita, Daiichi Suzuki
  • Patent number: 10197858
    Abstract: According to one embodiment, a display device includes a first substrate, a second substrate, a sealant, a liquid crystal layer, an organic insulating film, an alignment film and an inorganic insulating film. The second substrate is opposed to the first substrate. The sealant attaches the first substrate and the second substrate to each other. The liquid crystal layer is arranged between the first substrate and the second substrate. The organic insulating film, the alignment film and the inorganic insulating film are provided on the first substrate. The alignment film contacts the liquid crystal layer. The inorganic insulating film is located between the alignment film and the organic insulating film. At least part of the alignment film contacts the organic insulating film.
    Type: Grant
    Filed: January 22, 2018
    Date of Patent: February 5, 2019
    Assignee: Japan Display Inc.
    Inventors: Tetsuya Kojima, Hirofumi Wakemoto, Mitsutaka Okita, Daiichi Suzuki
  • Patent number: 10175818
    Abstract: A display device is configured that the common electrode wiring layer is divided in a source wiring layer direction, the metal wiring layer is disposed above the source wiring layer at a position in contact with the upper part of the common electrode wiring layer, and the metal wiring layer is not disposed at a position where the common electrode wiring layer is divided. Alternatively, the metal wiring layer is not disposed at a position between the same colors as those at the division position of the common electrode wiring layer.
    Type: Grant
    Filed: December 5, 2017
    Date of Patent: January 8, 2019
    Assignee: Japan Display Inc.
    Inventors: Shigesumi Araki, Mitsutaka Okita, Kazuhiro Nishiyama, Yoshitoshi Kida, Koji Ishizaki, Kohei Azumi, Hiroshi Mizuhashi
  • Publication number: 20180348555
    Abstract: According to one embodiment, a display device comprises a first A spacer, a second A spacer, a third A spacer and a fourth A spacer. The first A spacer and the third A spacer are on a first substrate. The second A spacer and the fourth A spacer are on a second substrate. At least one of the first and second substrates is a flexible substrate. The first A spacer and the second A spacer are aligned in a first direction. The third A spacer and the fourth A spacer are aligned in a second direction. Side surfaces of the first A spacer and the second A spacer face in the first direction. Side surfaces of the third A spacer and the fourth A spacer face in the second direction.
    Type: Application
    Filed: April 6, 2018
    Publication date: December 6, 2018
    Applicant: Japan Display Inc.
    Inventor: Mitsutaka OKITA
  • Publication number: 20180252974
    Abstract: A display device includes: a plurality of video lines and a plurality of scanning lines provided over an insulating base material; a light shielding film overlapping with the plurality of video lines and the plurality of scanning lines; a pixel electrode and a common electrode provided in a sub-pixel region surrounded by the plurality of video lines and the plurality of scanning lines in plan view; a liquid crystal layer driven by an electric field generated between the pixel electrode and the common electrode; and a first insulating layer provided between the pixel electrode and the common electrode. The common electrode is provided between the first insulating layer and the liquid crystal layer, and has an opening overlapping with the plurality of video lines and the plurality of scanning lines and overlapping with the pixel electrode. In a light transmission region surrounded by the light shielding film, a shape of the pixel electrode is a linear shape without a branching portion.
    Type: Application
    Filed: February 28, 2018
    Publication date: September 6, 2018
    Applicant: Japan Display Inc.
    Inventor: Mitsutaka OKITA
  • Patent number: 10068928
    Abstract: A display device includes: a scan line extending in a first direction; first, second and third signal lines extending in a second direction; a first sub-pixel connected to the scan line and the first signal line; a second sub-pixel connected to the scan line and the second signal line; and a third sub-pixel connected to the scan line and the third signal line. The second signal line disposed between the first sub-pixel and the third sub-pixel is formed by a different layer so as to overlap with the third signal line as viewed in a plan view.
    Type: Grant
    Filed: December 2, 2015
    Date of Patent: September 4, 2018
    Assignee: Japan Display Inc.
    Inventor: Mitsutaka Okita
  • Publication number: 20180217422
    Abstract: According to one embodiment, a display device includes a first substrate, a second substrate, a sealant, a liquid crystal layer, an organic insulating film, an alignment film and an inorganic insulating film. The second substrate is opposed to the first substrate. The sealant attaches the first substrate and the second substrate to each other. The liquid crystal layer is arranged between the first substrate and the second substrate. The organic insulating film, the alignment film and the inorganic insulating film are provided on the first substrate. The alignment film contacts the liquid crystal layer. The inorganic insulating film is located between the alignment film and the organic insulating film. At least part of the alignment film contacts the organic insulating film.
    Type: Application
    Filed: January 22, 2018
    Publication date: August 2, 2018
    Applicant: Japan Display Inc.
    Inventors: Tetsuya Kojima, Hirofumi Wakemoto, Mitsutaka Okita, Daiichi Suzuki
  • Publication number: 20180217423
    Abstract: According to one embodiment, the organic insulating film and the alignment film are provided on the first substrate. The alignment film is located between the liquid crystal layer and the organic insulating film and contacts the liquid crystal layer. The organic insulating film has a restricting portion on an inner side from the sealant and on an outer side from the display area. The restricting portion includes a recess and a projection extending in predetermined directions. The alignment film is formed on the restricting portion.
    Type: Application
    Filed: January 30, 2018
    Publication date: August 2, 2018
    Applicant: Japan Display Inc.
    Inventors: Daiichi SUZUKI, Hirofumi WAKEMOTO, Mitsutaka OKITA, Tetsuya KOJIMA
  • Publication number: 20180210257
    Abstract: If a divided area of common electrode layers is positioned on a source line, a leakage electric field on the source line has an effect on a liquid crystal layer through the divided area of the common electrode layers. A display device includes an array substrate and a counter substrate. The array substrate includes scanning signal wiring layers, video signal wiring layers, pixel electrode layers arranged in a layer higher than the video signal wiring layers, and common electrode layers arranged in a layer higher than the pixel electrode layers. The common electrode layers are arranged in positions covering the video signal wiring layers in a plan view. The common electrode layers are divided in the extending direction of the video signal line.
    Type: Application
    Filed: March 26, 2018
    Publication date: July 26, 2018
    Inventor: Mitsutaka OKITA
  • Patent number: 9958720
    Abstract: If a divided area of common electrode layers is positioned on a source line, a leakage electric field on the source line has an effect on a liquid crystal layer through the divided area of the common electrode layers. A display device includes an array substrate and a counter substrate. The array substrate includes scanning signal wiring layers, video signal wiring layers, pixel electrode layers arranged in a layer higher than the video signal wiring layers, and common electrode layers arranged in a layer higher than the pixel electrode layers. The common electrode layers are arranged in positions covering the video signal wiring layers in a plan view. The common electrode layers are divided in the extending direction of the video signal line.
    Type: Grant
    Filed: April 16, 2015
    Date of Patent: May 1, 2018
    Assignee: Japan Display Inc.
    Inventor: Mitsutaka Okita
  • Patent number: 9946130
    Abstract: A display device includes: first and second drain electrodes; an organic insulating film; an inorganic insulating film formed on the organic insulating film; and first and second pixel electrodes formed on the inorganic insulating film. The organic insulating film includes an organic insulating film opening spanning the first drain electrode and the second drain electrode. The inorganic insulating film covering the organic insulating film includes first and second inorganic insulating film openings. The first pixel electrode is connected to the first drain electrode via the first inorganic insulating film opening. The second pixel electrode is connected to the second drain electrode via the second inorganic insulating film opening.
    Type: Grant
    Filed: November 18, 2015
    Date of Patent: April 17, 2018
    Assignee: Japan Display Inc.
    Inventors: Mitsutaka Okita, Noriyoshi Kanda, Toshiyuki Higano
  • Publication number: 20180095593
    Abstract: A display device is configured that the common electrode wiring layer is divided in a source wiring layer direction, the metal wiring layer is disposed above the source wiring layer at a position in contact with the upper part of the common electrode wiring layer, and the metal wiring layer is not disposed at a position where the common electrode wiring layer is divided. Alternatively, the metal wiring layer is not disposed at a position between the same colors as those at the division position of the common electrode wiring layer.
    Type: Application
    Filed: December 5, 2017
    Publication date: April 5, 2018
    Inventors: Shigesumi Araki, Mitsutaka Okita, Kazuhiro Nishiyama, Yoshitoshi Kida, Koji Ishizaki, Kohei Azumi, Hiroshi Mizuhashi
  • Patent number: 9904122
    Abstract: According to one embodiment, a display device, includes a first main pixel including a first sub-pixel, a second sub-pixel which is arranged in a first direction of the first sub-pixel, and a third sub-pixel which is arranged in a second direction of the first sub-pixel and the first direction of the second sub-pixel, and a second main pixel including a fourth sub-pixel which is arranged in the second direction of the third sub-pixel, a fifth sub-pixel which is arranged in the first direction of the fourth sub-pixel and the second direction of the second sub-pixel, and a sixth sub-pixel which is arranged in the first direction of the fourth sub-pixel and the second direction of the fifth sub-pixel.
    Type: Grant
    Filed: April 4, 2016
    Date of Patent: February 27, 2018
    Assignee: Japan Display Inc.
    Inventor: Mitsutaka Okita
  • Patent number: 9870092
    Abstract: A display device is configured that the common electrode wiring layer is divided in a source wiring layer direction, the metal wiring layer is disposed above the source wiring layer at a position in contact with the upper part of the common electrode wiring layer, and the metal wiring layer is not disposed at a position where the common electrode wiring layer is divided. Alternatively, the metal wiring layer is not disposed at a position between the same colors as those at the division position of the common electrode wiring layer.
    Type: Grant
    Filed: December 21, 2016
    Date of Patent: January 16, 2018
    Assignee: Japan Display Inc.
    Inventors: Shigesumi Araki, Mitsutaka Okita, Kazuhiro Nishiyama, Yoshitoshi Kida, Koji Ishizaki, Kohei Azumi, Hiroshi Mizuhashi
  • Patent number: 9857638
    Abstract: A display device includes a scanning line extending in a first direction and a scanning line extending in a second direction. The signal line extends in a zigzag manner in the second direction by running tilted at a first predetermined angle with respect to the second direction for every plurality of pixels and running tilted at a second predetermined angle with respect to the second direction for every plurality of pixels.
    Type: Grant
    Filed: December 31, 2015
    Date of Patent: January 2, 2018
    Assignee: Japan Display Inc.
    Inventors: Shigesumi Araki, Mitsutaka Okita, Kazuhiro Nishiyama
  • Patent number: 9778504
    Abstract: According to one embodiment, a liquid crystal display panel includes a first substrate, a second substrate, a liquid crystal layer, a first color filter and a second color filter. The first substrate includes an organic insulating film, a first pixel electrode and a second pixel electrode. The organic insulating film includes a first projection portion located opposite to the boundary between the first color filter and the second color filter, extending along the boundary, and projecting toward the second substrate.
    Type: Grant
    Filed: December 2, 2015
    Date of Patent: October 3, 2017
    Assignee: Japan Display Inc.
    Inventor: Mitsutaka Okita
  • Patent number: 9684198
    Abstract: According to one embodiment, a liquid crystal display device includes an array substrate, an opposed substrate and a liquid crystal layer. The array substrate includes a first line, a second line, a light shielding pattern, a first pixel electrode, and a second pixel electrode. The opposed substrate includes a light shielding layer, a first colored layer, and a second colored layer.
    Type: Grant
    Filed: December 23, 2013
    Date of Patent: June 20, 2017
    Assignee: Japan Display Inc.
    Inventors: Mitsutaka Okita, Kazuhiro Nishiyama
  • Publication number: 20170115525
    Abstract: There is provided a liquid crystal display device that reduces viewing angle color mixture on a high definition screen. In the liquid crystal display device, a pixel electrode is formed on a region surrounded by scanning lines and picture signal lines. The scanning line is insulated from the picture signal line by a first insulating film. An organic insulating film is formed to cover the picture signal line. The organic insulating film is not formed below the pixel electrode. A common electrode is formed to cover the organic insulating film and the first insulating film. A second insulating film is formed to cover the common electrode. The pixel electrode is formed on the second insulating film. On the organic insulating film, a metal light shielding film is formed as extending in a second direction. The metal light shielding film is in contact with the common electrode.
    Type: Application
    Filed: October 13, 2016
    Publication date: April 27, 2017
    Inventor: Mitsutaka OKITA
  • Patent number: 9632621
    Abstract: A display device is configured that the common electrode wiring layer is divided in a source wiring layer direction, the metal wiring layer is disposed above the source wiring layer at a position in contact with the upper part of the common electrode wiring layer, and the metal wiring layer is not disposed at a position where the common electrode wiring layer is divided. Alternatively, the metal wiring layer is not disposed at a position between the same colors as those at the division position of the common electrode wiring layer.
    Type: Grant
    Filed: May 12, 2016
    Date of Patent: April 25, 2017
    Assignee: Japan Display Inc.
    Inventors: Shigesumi Araki, Mitsutaka Okita, Kazuhiro Nishiyama, Yoshitoshi Kida, Koji Ishizaki, Kohei Azumi, Hiroshi Mizuhashi
  • Publication number: 20170102600
    Abstract: A display device is configured that the common electrode wiring layer is divided in a source wiring layer direction, the metal wiring layer is disposed above the source wiring layer at a position in contact with the upper part of the common electrode wiring layer, and the metal wiring layer is not disposed at a position where the common electrode wiring layer is divided. Alternatively, the metal wiring layer is not disposed at a position between the same colors as those at the division position of the common electrode wiring layer.
    Type: Application
    Filed: December 21, 2016
    Publication date: April 13, 2017
    Inventors: Shigesumi ARAKI, Mitsutaka OKITA, Kazuhiro NISHIYAMA, Yoshitoshi KIDA, Koji ISHIZAKI, Kohei AZUMI, Hiroshi MIZUHASHI