Patents by Inventor Toshiyuki TSUBOTA

Toshiyuki TSUBOTA 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: 20240019628
    Abstract: According to one embodiment, an illumination device includes a light source disposed along a first direction, a light guide plate including a first end and a second end, the second end being positioned to be opposite to the first end in a second direction which crosses the first direction, a frame disposed along the second end and including an inner surface and an upper surface, and an adhesion member disposed on at least the upper surface of the frame, wherein the light source is disposed at the first end along the first direction, at least the inner surface of the frame is a light absorbing surface, and the adhesion member is light transmissive.
    Type: Application
    Filed: July 26, 2023
    Publication date: January 18, 2024
    Inventors: Kazunari NISHITA, Ken SUGIYAMA, Tetsuro OCHI, Toshiyuki TSUBOTA
  • Patent number: 11815764
    Abstract: To provide a light source device capable of irradiating a liquid crystal display module with light at uniform luminance and a display device including the light source device. A light source device has a rear vessel a front cover, a light source substrate, a plurality of light-emitting diodes, and a light-diffusing plate. The front cover is located over and overlaps the rear vessel. The light source substrate, the plurality of light-emitting diodes, and the light-diffusing plate are accommodated between the rear vessel and the front cover. The plurality of light-emitting diodes is located over the light source substrate. The light-diffusing plate is located over, overlaps, and is spaced away from the plurality of light-emitting diodes. The rear vessel and the front cover each have a bottom plate and a side plate integrated with the bottom plate. In at least one of the rear vessel and the front cover, a portion of the side plate is bent to form a protruding portion overlapping the bottom plate.
    Type: Grant
    Filed: March 23, 2020
    Date of Patent: November 14, 2023
    Assignee: Japan Display Inc.
    Inventors: Toshiyuki Tsubota, Ken Sugiyama, Rina Yamamoto
  • Patent number: 11747549
    Abstract: According to one embodiment, an illumination device includes a light source disposed along a first direction, a light guide plate including a first end and a second end, the second end being positioned to be opposite to the first end in a second direction which crosses the first direction, a frame disposed along the second end and including an inner surface and an upper surface, and an adhesion member disposed on at least the upper surface of the frame, wherein the light source is disposed at the first end along the first direction, at least the inner surface of the frame is a light absorbing surface, and the adhesion member is light transmissive.
    Type: Grant
    Filed: April 27, 2022
    Date of Patent: September 5, 2023
    Assignee: Japan Display Inc.
    Inventors: Kazunari Nishita, Ken Sugiyama, Tetsuro Ochi, Toshiyuki Tsubota
  • Publication number: 20230124789
    Abstract: A display device is provided and includes a liquid crystal display panel; and a backlight device opposed to the liquid crystal display panel via a polarizing plate; the backlight device including a frame comprising at least four bars; a first adhesive layer provided on one surface of the bars; a reflective sheet; a lightguide disposed on the reflective sheet in the frame; and a light source disposed in the frame and configured to emit light to the lightguide, wherein the frame includes a portion that is exposed from the liquid crystal display panel in a plan view, and a resin adhesive layer having a light-shielding property covers an external surface of the liquid crystal display panel and the portion of the frame.
    Type: Application
    Filed: December 20, 2022
    Publication date: April 20, 2023
    Inventors: Tetsuro OCHI, Ken SUGIYAMA, Toshiyuki TSUBOTA, Kazunari NISHITA
  • Patent number: 11536998
    Abstract: A backlight device is provided and include frame formed of sheet material including at least four bars; first adhesive layer provided on one surface of the bars; reflective sheet attached to frame with first adhesive layer; second adhesive layer is provided on another surface opposed to the one surface of the bars; optical member including lightguide plate disposed on reflective sheet in frame; and light source disposed in frame and configured to emit light to optical member, wherein thickness of second adhesive layer provided on three successive bars of frame along three sides of lightguide plate is greater than thickness of first adhesive layer provided on four bars of frame.
    Type: Grant
    Filed: September 3, 2021
    Date of Patent: December 27, 2022
    Assignee: JAPAN DISPLAY INC.
    Inventors: Tetsuro Ochi, Ken Sugiyama, Toshiyuki Tsubota, Kazunari Nishita
  • Patent number: 11520178
    Abstract: According to one embodiment, a display device includes a liquid crystal panel, a case covering a rear surface side of the liquid crystal panel, a backlight device disposed in the case and opposed to the liquid crystal panel with a gap, a first holding member provided on a side plate of the case, and a second holding member including a fixation part attached to the side plate of the case, and a second holding part interposed between an optical sheet and a rear surface of the liquid crystal panel to cover a light source device and an end part of the optical sheet on the light source device side.
    Type: Grant
    Filed: July 21, 2021
    Date of Patent: December 6, 2022
    Assignee: JAPAN DISPLAY INC.
    Inventors: Ken Sugiyama, Toshiyuki Tsubota, Rina Yamamoto
  • Publication number: 20220276532
    Abstract: To provide a light source device capable of irradiating a liquid crystal display module with light at uniform luminance and a display device including the light source device. A light source device has a rear vessel a front cover, a light source substrate, a plurality of light-emitting diodes, and a light-diffusing plate. The front cover is located over and overlaps the rear vessel. The light source substrate, the plurality of light-emitting diodes, and the light-diffusing plate are accommodated between the rear vessel and the front cover. The plurality of light-emitting diodes is located over the light source substrate. The light-diffusing plate is located over, overlaps, and is spaced away from the plurality of light-emitting diodes. The rear vessel and the front cover each have a bottom plate and a side plate integrated with the bottom plate. In at least one of the rear vessel and the front cover, a portion of the side plate is bent to form a protruding portion overlapping the bottom plate.
    Type: Application
    Filed: March 23, 2020
    Publication date: September 1, 2022
    Inventors: Toshiyuki TSUBOTA, Ken SUGIYAMA, Rina YAMAMOTO
  • Publication number: 20220252782
    Abstract: According to one embodiment, an illumination device includes a light source disposed along a first direction, a light guide plate including a first end and a second end, the second end being positioned to be opposite to the first end in a second direction which crosses the first direction, a frame disposed along the second end and including an inner surface and an upper surface, and an adhesion member disposed on at least the upper surface of the frame, wherein the light source is disposed at the first end along the first direction, at least the inner surface of the frame is a light absorbing surface, and the adhesion member is light transmissive.
    Type: Application
    Filed: April 27, 2022
    Publication date: August 11, 2022
    Inventors: Kazunari NISHITA, Ken SUGIYAMA, Tetsuro OCHI, Toshiyuki TSUBOTA
  • Patent number: 11346997
    Abstract: According to one embodiment, an illumination device includes a light source disposed along a first direction, a light guide plate including a first end and a second end, the second end being positioned to be opposite to the first end in a second direction which crosses the first direction, a frame disposed along the second end and including an inner surface and an upper surface, and an adhesion member disposed on at least the upper surface of the frame, wherein the light source is disposed at the first end along the first direction, at least the inner surface of the frame is a light absorbing surface, and the adhesion member is light transmissive.
    Type: Grant
    Filed: January 13, 2021
    Date of Patent: May 31, 2022
    Assignee: Japan Display Inc.
    Inventors: Kazunari Nishita, Ken Sugiyama, Tetsuro Ochi, Toshiyuki Tsubota
  • Publication number: 20210397035
    Abstract: A backlight device is provided and include frame formed of sheet material including at least four bars; first adhesive layer provided on one surface of the bars; reflective sheet attached to frame with first adhesive layer; second adhesive layer is provided on another surface opposed to the one surface of the bars; optical member including lightguide plate disposed on reflective sheet in frame; and light source disposed in frame and configured to emit light to optical member, wherein thickness of second adhesive layer provided on three successive bars of frame along three sides of lightguide plate is greater than thickness of first adhesive layer provided on four bars of frame.
    Type: Application
    Filed: September 3, 2021
    Publication date: December 23, 2021
    Inventors: Tetsuro OCHI, Ken SUGIYAMA, Toshiyuki TSUBOTA, Kazunari NISHITA
  • Publication number: 20210349342
    Abstract: According to one embodiment, a display device includes a liquid crystal panel, a case covering a rear surface side of the liquid crystal panel, a backlight device disposed in the case and opposed to the liquid crystal panel with a gap, a first holding member provided on a side plate of the case, and a second holding member including a fixation part attached to the side plate of the case, and a second holding part interposed between an optical sheet and a rear surface of the liquid crystal panel to cover a light source device and an end part of the optical sheet on the light source device side.
    Type: Application
    Filed: July 21, 2021
    Publication date: November 11, 2021
    Inventors: Ken SUGIYAMA, Toshiyuki TSUBOTA, Rina YAMAMOTO
  • Patent number: 11112632
    Abstract: A backlight device is provided and includes a frame formed of a sheet material; a first adhesive layer provided on one surface of the frame; a reflective sheet attached to the frame with the first adhesive layer; an optical member disposed on the reflective sheet in the frame; and a light source disposed in the frame and configured to emit light to the optical member, wherein in at least a part of the frame, a width of the frame and a width of the first adhesive layer are equal to each other, and at least an internal surface of the frame and an internal surface of the first adhesive layer are flush with each other.
    Type: Grant
    Filed: February 18, 2020
    Date of Patent: September 7, 2021
    Assignee: Japan Display Inc.
    Inventors: Tetsuro Ochi, Ken Sugiyama, Toshiyuki Tsubota, Kazunari Nishita
  • Publication number: 20210132287
    Abstract: According to one embodiment, an illumination device includes a light source disposed along a first direction, a light guide plate including a first end and a second end, the second end being positioned to be opposite to the first end in a second direction which crosses the first direction, a frame disposed along the second end and including an inner surface and an upper surface, and an adhesion member disposed on at least the upper surface of the frame, wherein the light source is disposed at the first end along the first direction, at least the inner surface of the frame is a light absorbing surface, and the adhesion member is light transmissive.
    Type: Application
    Filed: January 13, 2021
    Publication date: May 6, 2021
    Inventors: Kazunari NISHITA, Ken SUGIYAMA, Tetsuro OCHI, Toshiyuki TSUBOTA
  • Patent number: 10921509
    Abstract: According to one embodiment, an illumination device includes a light source disposed along a first direction, a light guide plate including a first end and a second end, the second end being positioned to be opposite to the first end in a second direction which crosses the first direction, a frame disposed along the second end and including an inner surface and an upper surface, and an adhesion member disposed on at least the upper surface of the frame, wherein the light source is disposed at the first end along the first direction, at least the inner surface of the frame is a light absorbing surface, and the adhesion member is light transmissive.
    Type: Grant
    Filed: February 6, 2020
    Date of Patent: February 16, 2021
    Assignee: Japan Display Inc.
    Inventors: Kazunari Nishita, Ken Sugiyama, Tetsuro Ochi, Toshiyuki Tsubota
  • Patent number: 10901251
    Abstract: According to one embodiment, a backlight device includes a frame formed of a sheet material, a first adhesive layer provided on one surface of the frame, a reflective sheet attached to the frame with the first adhesive layer, an optical member disposed on the reflective sheet in the frame, and a light source disposed in the frame and configured to emit light to the optical member. In at least a part of the frame, a width of the frame and a width of the first adhesive layer are equal to each other, and at least an external surface of the frame and an external surface of the first adhesive layer are flush with each other.
    Type: Grant
    Filed: June 27, 2018
    Date of Patent: January 26, 2021
    Assignee: Japan Display Inc.
    Inventors: Tetsuro Ochi, Ken Sugiyama, Toshiyuki Tsubota, Kazunari Nishita
  • Publication number: 20200183220
    Abstract: A backlight device is provided and includes a frame formed of a sheet material; a first adhesive layer provided on one surface of the frame; a reflective sheet attached to the frame with the first adhesive layer; an optical member disposed on the reflective sheet in the frame; and a light source disposed in the frame and configured to emit light to the optical member, wherein in at least a part of the frame, a width of the frame and a width of the first adhesive layer are equal to each other, and at least an internal surface of the frame and an internal surface of the first adhesive layer are flush with each other.
    Type: Application
    Filed: February 18, 2020
    Publication date: June 11, 2020
    Inventors: Tetsuro OCHI, Ken SUGIYAMA, Toshiyuki TSUBOTA, Kazunari NISHITA
  • Publication number: 20200174179
    Abstract: According to one embodiment, an illumination device includes a light source disposed along a first direction, a light guide plate including a first end and a second end, the second end being positioned to be opposite to the first end in a second direction which crosses the first direction, a frame disposed along the second end and including an inner surface and an upper surface, and an adhesion member disposed on at least the upper surface of the frame, wherein the light source is disposed at the first end along the first direction, at least the inner surface of the frame is a light absorbing surface, and the adhesion member is light transmissive.
    Type: Application
    Filed: February 6, 2020
    Publication date: June 4, 2020
    Inventors: Kazunari Nishita, Ken Sugiyama, Tetsuro Ochi, Toshiyuki Tsubota
  • Patent number: 10620366
    Abstract: According to one embodiment, an illumination device includes a light source disposed along a first direction, a light guide plate including a first end and a second end, the second end being positioned to be opposite to the first end in a second direction which crosses the first direction, a frame disposed along the second end and including an inner surface and an upper surface, and an adhesion member disposed on at least the upper surface of the frame, wherein the light source is disposed at the first end along the first direction, at least the inner surface of the frame is a light absorbing surface, and the adhesion member is light transmissive.
    Type: Grant
    Filed: July 26, 2019
    Date of Patent: April 14, 2020
    Assignee: Japan Display Inc.
    Inventors: Kazunari Nishita, Ken Sugiyama, Tetsuro Ochi, Toshiyuki Tsubota
  • Publication number: 20190346619
    Abstract: According to one embodiment, an illumination device includes a light source disposed along a first direction, a light guide plate including a first end and a second end, the second end being positioned to be opposite to the first end in a second direction which crosses the first direction, a frame disposed along the second end and including an inner surface and an upper surface, and an adhesion member disposed on at least the upper surface of the frame, wherein the light source is disposed at the first end along the first direction, at least the inner surface of the frame is a light absorbing surface, and the adhesion member is light transmissive.
    Type: Application
    Filed: July 26, 2019
    Publication date: November 14, 2019
    Inventors: Kazunari Nishita, Ken Sugiyama, Tetsuro Ochi, Toshiyuki Tsubota
  • Patent number: 10408994
    Abstract: According to one embodiment, an illumination device includes a light source disposed along a first direction, a light guide plate including a first end and a second end, the second end being positioned to be opposite to the first end in a second direction which crosses the first direction, a frame disposed along the second end and including an inner surface and an upper surface, and an adhesion member disposed on at least the upper surface of the frame, wherein the light source is disposed at the first end along the first direction, at least the inner surface of the frame is a light absorbing surface, and the adhesion member is light transmissive.
    Type: Grant
    Filed: April 24, 2017
    Date of Patent: September 10, 2019
    Assignee: Japan Display Inc.
    Inventors: Kazunari Nishita, Ken Sugiyama, Tetsuro Ochi, Toshiyuki Tsubota