Patents by Inventor Hajime Akimoto

Hajime Akimoto 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: 11018320
    Abstract: A display device includes a display region including light emitting elements; a first inorganic insulating layer covering the light emitting elements; a first organic insulating layer on the first inorganic insulating layer; a second organic insulating layer on the first organic insulating layer; a third organic insulating layer on the second organic insulating layer; and a second inorganic insulating layer on the third organic insulating layer. Edges of the first to third organic insulating layers are between edges of the first and second inorganic insulating layers and an edge of the display region; the edge of the second organic insulating layer is between the edge of the first organic insulating layer and the edge of the display region; and the edge of the third organic insulating layer is between the edges of the first and second inorganic insulating layers and the edge of the second organic insulating layer.
    Type: Grant
    Filed: July 3, 2019
    Date of Patent: May 25, 2021
    Assignee: Japan Display Inc.
    Inventors: Yuki Hamada, Hajime Akimoto
  • Patent number: 11011104
    Abstract: An image display device includes pixels each of which includes subpixels including a first subpixel and a second subpixel. The first subpixel includes a first light-emitting element configured to emit isochromatic light and a first wavelength conversion layer provided over the first light-emitting element to emit red light. The second subpixel includes a second light-emitting element configured to emit the isochromatic light and a second wavelength conversion layer provided over the second light-emitting element to emit green light. The pixels includes at least one pixel which includes a defective subpixel. A drive circuit is configured to drive the subpixels based on data of an image signal such that the pixels reproduces the data of the image signal. The drive circuit is configured to drive the first subpixel and the second subpixel based on the position data and data of red and green luminances.
    Type: Grant
    Filed: December 26, 2019
    Date of Patent: May 18, 2021
    Assignee: NICHIA CORPORATION
    Inventor: Hajime Akimoto
  • Patent number: 10996805
    Abstract: A display device comprising: a display region including a first pixel and a second pixel arranged apart from each other, and a third pixel, and a touch sensor includes a first sensor electrode and a second sensor electrode, wherein the touch sensor overlaps the display region, the first sensor electrode has an opening part in a region overlapping the first pixel and the second pixel, and surrounding the first pixel and the second pixel, and the second sensor electrode overlapping the third pixel.
    Type: Grant
    Filed: July 25, 2018
    Date of Patent: May 4, 2021
    Assignee: Japan Display Inc.
    Inventors: Yuki Hamada, Hajime Akimoto
  • Patent number: 10976878
    Abstract: A display device in an embodiment includes a first light emitting region; a second light emitting region located at a position away from the first light emitting region by a first distance in a first direction; a third light emitting region located at a position away from the second light emitting region by a second distance shorter than the first distance in the first direction; a first conductive portion located between the first light emitting region and the second light emitting region as seen from a display plane, the first conductive portion having a first width in the first direction, and a second conductive portion located between the second light emitting region and the third light emitting region as seen from the display plane, the second conductive portion having a second width shorter than the first width in the first direction.
    Type: Grant
    Filed: January 30, 2020
    Date of Patent: April 13, 2021
    Assignee: Japan Display Inc.
    Inventors: Yusuke Tada, Hajime Akimoto
  • Publication number: 20210089186
    Abstract: A display device includes a flexible substrate, a plurality of TFTs, a first electrode arranged between a channel of one of the plurality of TFTs and the flexible substrate, at least one inorganic insulating film arranged between one of the plurality of TFTs and the first electrode, a second electrode arranged on the opposite side to the side where one of the plurality of TFTs is arranged with respect to the first electrode, and an organic insulating film arranged between the first electrode and the second electrode.
    Type: Application
    Filed: December 10, 2020
    Publication date: March 25, 2021
    Inventors: Chunche MA, Hajime Akimoto
  • Patent number: 10957748
    Abstract: A sealing member containing conductive particles and disposed in a seal region is formed between a display panel and a touch panel. A laminated structure formed on the display panel includes a first detection lines. The first detection lines extend from the seal region to a connection region and are connected through the conductive particles to terminals of second detection lines formed on the touch panel. A peripheral edge of the organic barrier is located inward from the conductive particles of the sealing member. The above described structure can facilitate a work for connecting external lines such as FPC to the display panel and the touch panel. Further, the structure can secure stability of electrical connection between the external lines and the touch panel.
    Type: Grant
    Filed: April 23, 2020
    Date of Patent: March 23, 2021
    Assignee: Japan Display Inc.
    Inventors: Mitsuhide Miyamoto, Hajime Akimoto
  • Publication number: 20210082340
    Abstract: An image display device includes pixel circuits arranged in a matrix configuration between a first power supply line and a second power supply line. Each of the pixel circuits includes a light-emitting element and a first circuit connected to the light-emitting element and configured to set a duration during which a current is supplied to the light-emitting element based on a result of comparing a first signal and a first direct current voltage. The first signal includes a triangular wave signal. The first direct current voltage is set in a prescribed period. At least one of the pixel circuits includes a second circuit connected in series to the first circuit. The second circuit is configured to control a current supplied to the first circuit based on a second direct current voltage set in a period different from the prescribed period.
    Type: Application
    Filed: November 25, 2020
    Publication date: March 18, 2021
    Applicant: NICHIA CORPORATION
    Inventor: Hajime AKIMOTO
  • Publication number: 20210026483
    Abstract: The first and second touch electrodes constitute a mesh shape of staying away from overlap with the light-emitting pixels. Each electrode body has a first slim portion between adjacent light-emitting pixels in the first direction. Each electrode body has a first wide portion between adjacent light-emitting pixels in the second direction. The first wide portion is wider than the first slim portion. The jumper electrode has a second slim portion between adjacent light-emitting pixels in the first direction. The jumper electrode has a second wide portion between adjacent light-emitting pixels in the second direction. The second wide portion is wider than the second slim portion. The light-emitting pixels each have a planar shape longer in the second direction than in the first direction. The first and second wide portions are overlapped and electrically conductive, penetrating the insulation film.
    Type: Application
    Filed: October 13, 2020
    Publication date: January 28, 2021
    Applicant: Japan Display Inc.
    Inventors: Mitsuhide MIYAMOTO, Hajime AKIMOTO
  • Patent number: 10886308
    Abstract: A display device includes a flexible substrate, a plurality of thin film transistors (TFTs), a first electrode arranged between a channel of one of the plurality of TFTs and the flexible substrate, at least one inorganic insulating film arranged between one of the plurality of TFTs and the first electrode, a second electrode arranged on the opposite side to the side where one of the plurality of TFTs is arranged with respect to the first electrode, and an organic insulating film arranged between the first electrode and the second electrode.
    Type: Grant
    Filed: July 6, 2018
    Date of Patent: January 5, 2021
    Assignee: Japan Display Inc.
    Inventors: Chunche Ma, Hajime Akimoto
  • Patent number: 10885834
    Abstract: An image display device includes pixel circuits arranged in a matrix configuration between a first power supply line and a second power supply line. Each of the pixel circuits includes a light-emitting element and a first circuit connected to the light-emitting element and configured to set a duration during which a current is supplied to the light-emitting element based on a result of comparing a first signal and a first direct current voltage. The first signal includes a triangular wave signal. The first direct current voltage is set in a prescribed period. At least one of the pixel circuits includes a second circuit connected in series to the first circuit. The second circuit is configured to control a current supplied to the first circuit based on a second direct current voltage set in a period different from the prescribed period.
    Type: Grant
    Filed: July 30, 2019
    Date of Patent: January 5, 2021
    Assignee: NICHIA CORPORATION
    Inventor: Hajime Akimoto
  • Patent number: 10866664
    Abstract: The first and second touch electrodes constitute a mesh shape of staying away from overlap with the light-emitting pixels. Each electrode body has a first slim portion between adjacent light-emitting pixels in the first direction. Each electrode body has a first wide portion between adjacent light-emitting pixels in the second direction. The first wide portion is wider than the first slim portion. The jumper electrode has a second slim portion between adjacent light-emitting pixels in the first direction. The jumper electrode has a second wide portion between adjacent light-emitting pixels in the second direction. The second wide portion is wider than the second slim portion. The light-emitting pixels each have a planar shape longer in the second direction than in the first direction. The first and second wide portions are overlapped and electrically conductive, penetrating the insulation film.
    Type: Grant
    Filed: April 24, 2018
    Date of Patent: December 15, 2020
    Assignee: Japan Display Inc.
    Inventors: Mitsuhide Miyamoto, Hajime Akimoto
  • Patent number: 10838565
    Abstract: A display device according to an embodiment of the invention includes: a base insulating film; a sealing film which covers the base insulating film; a plurality of first electrodes which are two-dimensionally arranged on the sealing film, the first electrodes adjacent in a first direction being connected via a first connection line; a plurality of second electrodes which are two-dimensionally arranged, the second electrodes adjacent in the second direction being connected via a second connection line intersecting the first connection line in plan view; an interlayer insulating film which is interposed between the first connection line and the second connection line and which fills a step formed by an outer edge of the sealing film and the base insulating film; and a lead-out wiring which is connected to the first electrode or the second electrode and which passes over a portion of the interlayer insulating film which fills the step.
    Type: Grant
    Filed: September 23, 2019
    Date of Patent: November 17, 2020
    Assignee: Japan Display Inc.
    Inventors: Mitsuhide Miyamoto, Hajime Akimoto, Yuko Matsumoto, Yusuke Tada
  • Patent number: 10809837
    Abstract: A display device with touch sensor according to an embodiment of the present invention includes: a plurality of first electrodes arranged in a display region on a sealing film, in which the first electrodes are connected via a first connection line; a plurality of second electrodes arranged in the same layer as, or in a layer different from the first electrodes, in which the second electrodes are connected via a second connection line intersecting with the first connection line in a plan view; an interlayer insulating film intervening between the first connection line and the second connection line and filling a dividing groove covered by the sealing film by which an organic insulating film is divided outside the display region; and a lead wiring line connected to the first electrode or the second electrode and passing over a portion of the interlayer insulating film that fills the dividing groove.
    Type: Grant
    Filed: August 8, 2019
    Date of Patent: October 20, 2020
    Assignee: Japan Display Inc.
    Inventors: Yusuke Tada, Hajime Akimoto
  • Publication number: 20200315039
    Abstract: A display device according to the disclosure includes: a first support that supports a display panel; a second support that supports the display panel; a connecting portion that connects the first support and the second support so that the display panel can be bent; a first member that is fixed to the first support and is more flexible than the display panel; a second member that is fixed to the second support and is more flexible than the display panel; a first adhesion layer that adheres the first member to at least a portion of a first surface opposite to a display surface of the display panel; and a second adhesion layer that adheres the second member to at least another portion of the first surface.
    Type: Application
    Filed: June 12, 2020
    Publication date: October 1, 2020
    Applicant: Japan Display Inc.
    Inventors: Tohru SASAKI, Hajime AKIMOTO
  • Publication number: 20200303471
    Abstract: A method for manufacturing an image display device includes: preparing a substrate, the substrate comprising a semiconductor layer, the semiconductor layer comprising a light emitting layer, the semiconductor layer being formed on a first substrate; bonding the semiconductor layer to a second substrate, the second substrate comprising a circuit that comprises a circuit element; forming a light emitting element by etching the semiconductor layer; forming an insulating film covering the light emitting element; forming a via reaching the circuit through the insulating film; and electrically connecting the light emitting element and the circuit element through the via, the via connecting the light emitting element and the circuit element provided in different layers.
    Type: Application
    Filed: March 19, 2020
    Publication date: September 24, 2020
    Applicant: NICHIA CORPORATION
    Inventor: Hajime AKIMOTO
  • Publication number: 20200303483
    Abstract: A display device includes: a substrate configured to contain an organic material; a first underlying film provided above the substrate; a thin film transistor provided above the first underlying film; a semiconductor film included in the thin film transistor and configured to have a channel region; and an electric field inhibition film provided between the first underlying film and the semiconductor film and configured to overlap the channel region in a plan view. The electric field inhibition film has a higher permittivity than the first underlying film.
    Type: Application
    Filed: June 10, 2020
    Publication date: September 24, 2020
    Applicant: Japan Display Inc.
    Inventors: Takuma NISHINOHARA, Hajime AKIMOTO
  • Publication number: 20200251531
    Abstract: A sealing member containing conductive particles and disposed in a seal region is formed between a display panel and a touch panel. A laminated structure formed on the display panel includes a first detection lines. The first detection lines extend from the seal region to a connection region and are connected through the conductive particles to terminals of second detection lines formed on the touch panel. A peripheral edge of the organic barrier is located inward from the conductive particles of the sealing member. The above described structure can facilitate a work for connecting external lines such as FPC to the display panel and the touch panel. Further, the structure can secure stability of electrical connection between the external lines and the touch panel.
    Type: Application
    Filed: April 23, 2020
    Publication date: August 6, 2020
    Applicant: Japan Display Inc.
    Inventors: Mitsuhide MIYAMOTO, Hajime AKIMOTO
  • Patent number: 10727283
    Abstract: A display device in an embodiment according to the present invention includes a substrate, a plurality of wirings above the insulation surface, an interlayer insulation layer covering the plurality of wirings, a light emitting element above the interlayer insulation layer, a first inorganic insulation layer covering the light emitting element, a first detection electrode extending in a first direction above the first inorganic insulation layer, an organic insulation layer above the first inorganic insulation layer covering the first detection electrode, a second detection electrode extending in a second direction intersecting the first direction above the organic insulation layer, a second inorganic insulation layer above the organic insulation layer covering the second detection electrode, a first connection wiring electrically connecting the first detection electrode and one of the plurality of wirings, and a second connection wiring electrically connecting the second detection electrode and another one of
    Type: Grant
    Filed: December 11, 2018
    Date of Patent: July 28, 2020
    Assignee: Japan Display Inc.
    Inventors: Kenta Hiraga, Hajime Akimoto
  • Publication number: 20200225789
    Abstract: A touch sensor is a capacitive touch sensor including a touch detection area that includes a plurality of drive electrodes and a plurality of detection electrodes, and includes a plurality of drive signal lines extending in the Y-axis direction and arranged in the X-axis direction, and a plurality of detection signal lines extending in the X-axis direction and arranged in the Y-axis direction. The touch detection area includes a fingerprint detection area F in which an interval between a plurality of drive signal lines and an interval between a plurality of detection signal lines are narrow, and the detection signal lines include fingerprint authentication signal lines disposed in a fingerprint authentication area and detection signal lines disposed to be electrically separated from the fingerprint authentication signal lines in an area, which is adjacent to the fingerprint authentication area in the X-axis direction, of the touch detection area.
    Type: Application
    Filed: April 1, 2020
    Publication date: July 16, 2020
    Applicant: Japan Display Inc.
    Inventor: Hajime AKIMOTO
  • Publication number: 20200211451
    Abstract: An image display device includes pixels each of which includes subpixels including a first subpixel and a second subpixel. The first subpixel includes a first light-emitting element configured to emit isochromatic light and a first wavelength conversion layer provided over the first light-emitting element to emit red light. The second subpixel includes a second light-emitting element configured to emit the isochromatic light and a second wavelength conversion layer provided over the second light-emitting element to emit green light. The pixels includes at least one pixel which includes a defective subpixel. A drive circuit is configured to drive the subpixels based on data of an image signal such that the pixels reproduces the data of the image signal. The drive circuit is configured to drive the first subpixel and the second subpixel based on the position data and data of red and green luminances.
    Type: Application
    Filed: December 26, 2019
    Publication date: July 2, 2020
    Applicant: NICHIA CORPORATION
    Inventor: Hajime AKIMOTO