Patents by Inventor Ken Sugiyama

Ken Sugiyama 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: 11644613
    Abstract: The light source device includes a rear vessel, a light source substrate, a plurality of light-emitting diodes, a front cover, and a light diffuser. The rear vessel has a bottom plate and a first lower side plate connected to the bottom plate. The light source substrate is accommodated in the rear vessel. The plurality of light-emitting diodes is located over the light source substrate. The front cover has an upper plate and a first upper side plate connected to the upper plate, is located over the rear vessel, and accommodates the rear vessel. The light diffuser is accommodated in the front cover, is located over the plurality of light-emitting diodes, and is spaced away from the plurality of light-emitting diodes. The first lower side plate and the first upper side plate each have a notch.
    Type: Grant
    Filed: September 28, 2021
    Date of Patent: May 9, 2023
    Assignee: Japan Display Inc.
    Inventors: Rina Yamamoto, Ken Sugiyama
  • 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
  • Publication number: 20230118649
    Abstract: Provided is a light source device including: a housing body; a light source substrate located over and accommodated in the housing body; a plurality of inorganic light-emitting elements over the light source substrate; an optical sheet located over the plurality of inorganic light-emitting elements, accommodated in the housing body, and spaced away from the light source substrate; and at least one spacer accommodated in the housing body and in contact with a bottom surface of the optical sheet. A region of an upper surface of the light source substrate overlapping the plurality of inorganic light-emitting elements does not overlap the at least one spacer.
    Type: Application
    Filed: December 19, 2022
    Publication date: April 20, 2023
    Applicant: Japan Display Inc.
    Inventors: Rina YAMAMOTO, Ken SUGIYAMA
  • Patent number: 11573453
    Abstract: Provided is a light source device including: a housing body; a light source substrate located over and accommodated in the housing body; a plurality of inorganic light-emitting elements over the light source substrate; an optical sheet located over the plurality of inorganic light-emitting elements, accommodated in the housing body, and spaced away from the light source substrate; and at least one spacer accommodated in the housing body and in contact with a bottom surface of the optical sheet. A region of an upper surface of the light source substrate overlapping the plurality of inorganic light-emitting elements does not overlap the at least one spacer.
    Type: Grant
    Filed: October 4, 2021
    Date of Patent: February 7, 2023
    Assignee: Japan Display Inc.
    Inventors: Rina Yamamoto, Ken Sugiyama
  • Patent number: 11567354
    Abstract: According to an embodiment, a display device comprises a frame defining an opening, a grip extending from the frame, and a display panel which is held by the frame and whose background is visually recognizable. Further, the opening includes a region surrounded by an inner edge of the frame and the display panel.
    Type: Grant
    Filed: July 8, 2021
    Date of Patent: January 31, 2023
    Assignee: Japan Display Inc.
    Inventors: Koji Hiramoto, Norika Ikeda, Ken Sugiyama
  • 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
  • Patent number: 11460738
    Abstract: A display device is provided and includes a display panel comprising a substrate; a case provided on a back side of the substrate, the case having an outer surface; and a flexible wiring board, one end of which is connected to a top surface of the substrate, curved along the outer surface of the case; wherein the flexible wiring board is fixed to a side surface of the substrate and the outer surface of the case with an adhesive.
    Type: Grant
    Filed: November 25, 2020
    Date of Patent: October 4, 2022
    Assignee: Japan Display Inc.
    Inventors: Tomoya Tezen, Ken Sugiyama, Kosuke Matsubara, Koji Hiramoto, Takeshi Kaneki
  • 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
  • Patent number: 11428998
    Abstract: A display device is provided and includes display panel; case provided at back surface of display panel; and flexible wiring board including first end connected to display panel and curved along outer surface of case, flexible wiring board comprising sheet-shaped substrate having first surface that is flat and second surface opposite to first surface, conductive layer formed on first surface of substrate and constituting wires, and protective layer overlaid on conductive layer and substrate, and substrate comprising first portion including first end joined to display panel, second portion including second end opposite to first end, and third portion provided between first portion and second portion, thickness of part of third portion is smaller than thickness of first portion and thickness of second portion, flexible wiring board is curved at third portion.
    Type: Grant
    Filed: December 28, 2020
    Date of Patent: August 30, 2022
    Assignee: Japan Display Inc.
    Inventors: Koji Hiramoto, Ken Sugiyama, Kosuke Matsubara, Tomoya Tezen
  • Publication number: 20220268986
    Abstract: Display device is provided and includes display panel; and illumination device provided on rear surface side of display panel, wherein illumination device includes light sources, and light guiding member arranged at rear surface side of display panel, light guiding member has holes which penetrates the light guiding member, light sources are housed in corresponding hole, rear surface of light guiding member has first inclined surface inclined upwardly from light source housed in one of holes, front surface side of light guiding member has second inclined surface inclined upwardly from light source housed in one of the holes, and angle of first inclined surface to center line of one of holes is greater than angle of second inclined surface to center line.
    Type: Application
    Filed: May 12, 2022
    Publication date: August 25, 2022
    Inventors: Koji HIRAMOTO, Masafumi OKADA, Hiroshi NAKAMOTO, Ken KAGABU, Ken SUGIYAMA
  • 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
  • Patent number: 11333818
    Abstract: According to an aspect, a display device includes: a display panel configured to transmit light; and an illumination device provided on a rear surface side of the display panel. The illumination device includes a plurality of light sources configured to emit light, and a light guiding member that has translucency and is arranged between the light sources on the rear surface side of the display panel. The light guiding member has a plurality of holes each of which opens in a first direction intersecting with a rear surface of the display panel and in each of which a corresponding one of the light sources is disposed, and a light guiding portion surrounding the holes. A rear surface of the light guiding portion is provided with a first inclined surface inclined with respect to the first direction and a plane orthogonal to the first direction.
    Type: Grant
    Filed: June 24, 2021
    Date of Patent: May 17, 2022
    Assignee: Japan Display Inc.
    Inventors: Koji Hiramoto, Masafumi Okada, Hiroshi Nakamoto, Ken Kagabu, Ken Sugiyama
  • Publication number: 20220100034
    Abstract: A backlight device is provided and includes case having bottom plate; light guide including front surface as emission surface, rear surface opposed to front surface, and incidence surface provided between front and rear surfaces, rear surface being arranged on bottom plate; and light-emitting elements facing incident surface of light guide, wherein light-emitting elements includes first surface provided at bottom of light-emitting elements, and light-emitting surface facing incidence surface of light guide, first surfaces and rear surface are arranged side by side, and fixed to fixing tape attached over first surfaces and rear surface of light guide, and light-shield is facing fixing tape through light guide.
    Type: Application
    Filed: December 8, 2021
    Publication date: March 31, 2022
    Inventors: Ken SUGIYAMA, Kosuke MATSUBARA, Takeshi KANEKI
  • Publication number: 20220026765
    Abstract: Provided is a light source device including: a housing body; a light source substrate located over and accommodated in the housing body; a plurality of inorganic light-emitting elements over the light source substrate; an optical sheet located over the plurality of inorganic light-emitting elements, accommodated in the housing body, and spaced away from the light source substrate; and at least one spacer accommodated in the housing body and in contact with a bottom surface of the optical sheet. A region of an upper surface of the light source substrate overlapping the plurality of inorganic light-emitting elements does not overlap the at least one spacer.
    Type: Application
    Filed: October 4, 2021
    Publication date: January 27, 2022
    Applicant: Japan Display Inc.
    Inventors: Rina YAMAMOTO, Ken SUGIYAMA
  • Publication number: 20220011498
    Abstract: The light source device includes a rear vessel, a light source substrate, a plurality of light-emitting diodes, a front cover, and a light diffuser. The rear vessel has a bottom plate and a first lower side plate connected to the bottom plate. The light source substrate is accommodated in the rear vessel. The plurality of light-emitting diodes is located over the light source substrate. The front cover has an upper plate and a first upper side plate connected to the upper plate, is located over the rear vessel, and accommodates the rear vessel. The light diffuser is accommodated in the front cover, is located over the plurality of light-emitting diodes, and is spaced away from the plurality of light-emitting diodes. The first lower side plate and the first upper side plate each have a notch.
    Type: Application
    Filed: September 28, 2021
    Publication date: January 13, 2022
    Inventors: Rina YAMAMOTO, Ken SUGIYAMA
  • Patent number: 11209695
    Abstract: A backlight device is provided and includes case having bottom plate; light guide including front surface as emission surface, rear surface opposed to front surface, and incidence surface provided between front surface and rear surface; and light-emitting elements facing incident surface of light guide, wherein light-emitting elements include first surface provided at bottom of light-emitting elements, and light-emitting surface facing incidence surface of light guide, first surfaces and rear surface are arranged side by side, and fixed to fixing tape attached over first surfaces and rear surface of light guide, and light-shielding tape facing fixing tape through light guide and light-emitting elements.
    Type: Grant
    Filed: March 12, 2021
    Date of Patent: December 28, 2021
    Assignee: Japan Display Inc.
    Inventors: Ken Sugiyama, Kosuke Matsubara, Takeshi Kaneki
  • 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