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).

  • Publication number: 20220223776
    Abstract: An image display device manufacturing method includes: providing a first substrate that includes: a circuit including a circuit element formed on a light-transmitting substrate, and a first insulating film covering the circuit; forming, on the first insulating film, a conductive layer including a portion made of a single crystal metal; forming, on the portion made of the single crystal metal, a semiconductor layer including a light-emitting layer; etching the semiconductor layer to form a light-emitting element; forming a second insulating film covering the conductive layer, the light-emitting element, and the first insulating film; forming a via passing through the first insulating film and the second insulating film; and electrically connecting the light-emitting element and the circuit element through the via at a light-emitting surface facing a surface of the light-emitting element on a first insulating film side.
    Type: Application
    Filed: March 30, 2022
    Publication date: July 14, 2022
    Applicant: NICHIA CORPORATION
    Inventor: Hajime AKIMOTO
  • Publication number: 20220223648
    Abstract: An image display device manufacturing method includes: providing a first substrate that includes: a circuit including a circuit element formed on a light-transmitting substrate, and a first insulating film covering the circuit; forming, on the first insulating film, a layer including graphene; forming, on the layer v graphene, a semiconductor layer including a light-emitting layer; etching the semiconductor layer to form a light-emitting element; forming a second insulating film covering the layer including graphene, the light-emitting element, and the first insulating film; forming a via passing through the first insulating film and the second insulating film; and electrically connecting the light-emitting element and the circuit element through the via at a light-emitting surface facing a surface of the light-emitting element on a first insulating film side.
    Type: Application
    Filed: March 30, 2022
    Publication date: July 14, 2022
    Applicant: NICHIA CORPORATION
    Inventor: Hajime AKIMOTO
  • Publication number: 20220149228
    Abstract: A method for manufacturing an image display device includes: providing a second substrate that includes a first substrate, and a semiconductor layer grown on the first substrate, the semiconductor layer including a light-emitting layer; providing a third substrate including: a light-transmitting substrate, a circuit element formed on the light-transmitting substrate, a wiring layer connectable to the circuit element, and a first insulating film covering the circuit element and the wiring layer; bonding the semiconductor layer to the third substrate; forming a light-emitting element from the semiconductor layer; forming a second insulating film covering the light-emitting element; forming a via extending through the first and second insulating films; and electrically connecting the light-emitting element and the circuit element by the via. The wiring layer includes a light-reflective part. The light-emitting element is located on the light-reflective part.
    Type: Application
    Filed: January 24, 2022
    Publication date: May 12, 2022
    Applicant: NICHIA CORPORATION
    Inventor: Hajime AKIMOTO
  • Publication number: 20220149113
    Abstract: A method for manufacturing an image display device includes: providing a second substrate that includes a first substrate, and a semiconductor layer grown on the first substrate, the semiconductor layer including a light-emitting layer; providing a third substrate including: a circuit including a circuit element formed on a light-transmitting substrate, a first insulating film covering the circuit, and a conductive layer including a light-reflective part formed on the first insulating film; bonding the semiconductor layer to the third substrate; forming a light-emitting element from the semiconductor layer; forming a second insulating film covering the conductive layer, the light-emitting element, and the first insulating film; forming a via extending through the first and second insulating films; and electrically connecting the light-emitting element and the circuit element by the via.
    Type: Application
    Filed: January 27, 2022
    Publication date: May 12, 2022
    Applicant: NICHIA CORPORATION
    Inventor: Hajime AKIMOTO
  • Publication number: 20220131027
    Abstract: A method for manufacturing an image display device includes: providing a second substrate that comprises a first substrate, and a semiconductor layer on the first substrate, the semiconductor layer comprising a light-emitting layer; providing a third substrate comprising a circuit, the circuit comprising a circuit element; bonding the semiconductor layer to the third substrate; forming a light-emitting element by etching the semiconductor layer; covering the light-emitting element with a light-transmissive insulating member; and forming a wiring layer electrically connecting the light-emitting element to the circuit element; wherein: the light-emitting element has a light-emitting surface opposite to a surface of the light-emitting element that is bonded to the third substrate; and the insulating member is configured to cause light radiated from the light-emitting element to have a light distribution in a normal direction of the light-emitting surface toward a light-emitting surface side.
    Type: Application
    Filed: January 4, 2022
    Publication date: April 28, 2022
    Applicant: NICHIA CORPORATION
    Inventor: Hajime AKIMOTO
  • Publication number: 20220069187
    Abstract: A manufacturing method of an embodiment includes: providing a semiconductor growth substrate including a semiconductor layer including a light-emitting layer on a first substrate; forming a first insulating film on a second substrate that includes a circuit that includes a circuit element and a first wiring layer; forming a plug in the first insulating film to be connected with the circuit element; bonding the semiconductor layer to the second substrate and electrically connecting the plug to the semiconductor layer; forming a light-emitting element electrically connected to the plug by patterning the semiconductor layer; forming a second insulating film that covers the light-emitting element and the first insulating film; exposing a portion of the light-emitting element by removing a portion of the second insulating film; and forming a second wiring layer on the second insulating film.
    Type: Application
    Filed: November 9, 2021
    Publication date: March 3, 2022
    Applicant: NICHIA CORPORATION
    Inventor: Hajime AKIMOTO
  • Publication number: 20220069188
    Abstract: A method for manufacturing an image display device includes: providing a semiconductor growth substrate comprising a semiconductor layer on a first substrate, the semiconductor layer comprising a light-emitting layer; providing a second substrate comprising a circuit, wherein the circuit comprises a circuit element; forming a light-shielding layer on the second substrate; forming an insulating film on the light-shielding layer; bonding the semiconductor layer to the second substrate on which the insulating film is formed; forming a light-emitting element by etching the semiconductor layer; forming an insulating layer that covers the light-emitting element; and electrically connecting the light-emitting element to the circuit element. The light-shielding layer is located between the light-emitting element and the circuit element. In a plan view, the light-shielding layer covers the circuit element.
    Type: Application
    Filed: November 9, 2021
    Publication date: March 3, 2022
    Applicant: NICHIA CORPORATION
    Inventor: Hajime AKIMOTO
  • Publication number: 20220059735
    Abstract: An image display device includes a plurality of pixels each of which includes a plurality of first subpixels and a second subpixel. The plurality of first subpixels is configured to emit red light, green light, and blue light. The second subpixel is configured to emit blue light. The plurality of pixels includes at least one pixel in which the plurality of first subpixels includes a defective subpixel which is supposed to emit predetermined light with a predetermined color. The second subpixel includes a light-emitting element and a wavelength conversion layer provided over the light-emitting element to convert emission light emitted from the light-emitting element to converted light with the predetermined color if the predetermined color is red or green.
    Type: Application
    Filed: November 4, 2021
    Publication date: February 24, 2022
    Applicant: NICHIA CORPORATION
    Inventor: Hajime AKIMOTO
  • Publication number: 20220059518
    Abstract: A manufacturing method includes: providing a substrate in which a semiconductor layer including a light-emitting layer is located on a first substrate; forming a metal layer on the semiconductor layer; bonding the semiconductor layer via the metal layer to a second substrate that includes a circuit that includes a circuit element is formed; forming a light-emitting element by patterning the semiconductor layer; forming a first wiring layer by patterning the metal layer; forming an insulating film that covers the light-emitting element and the first wiring layer; forming a first via that extends through the insulating film to the circuit; forming a second wiring layer on the insulating film; and connecting the light-emitting element and the circuit element electrically in series via the first wiring layer, the second wiring layer, and the first via.
    Type: Application
    Filed: November 5, 2021
    Publication date: February 24, 2022
    Applicant: NICHIA CORPORATION
    Inventor: Hajime AKIMOTO
  • Patent number: 11243643
    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: Grant
    Filed: April 1, 2020
    Date of Patent: February 8, 2022
    Assignee: Japan Display Inc.
    Inventor: Hajime Akimoto
  • Publication number: 20220035467
    Abstract: The method for manufacturing a display device includes forming a light emitting element and a terminal on a substrate, forming a sealing film including a first inorganic insulating film and a second inorganic insulating film to cover the light emitting element and the terminal, forming a resist having a taper shape in which a thickness of an end portion on the sealing film becomes thinner as it goes to the terminal side by using a gray-tone mask, forming a taper shape in which thicknesses in end portions of the first inorganic insulating film and the second inorganic insulating film becomes thinner as it goes to the terminal side by etching, forming a touch electrode above the sealing film and forming wiring connected to the terminal via the end portions together with connecting to the touch electrode for detecting a touched position.
    Type: Application
    Filed: October 18, 2021
    Publication date: February 3, 2022
    Inventors: Yuko MATSUMOTO, Hajime Akimoto, Mitsuhide Miyamoto, Yusuke Tada
  • Patent number: 11231822
    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: April 7, 2021
    Date of Patent: January 25, 2022
    Assignee: Japan Display Inc.
    Inventors: Yusuke Tada, Hajime Akimoto
  • Patent number: 11191172
    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: Grant
    Filed: June 12, 2020
    Date of Patent: November 30, 2021
    Assignee: JAPAN DISPLAY INC.
    Inventors: Tohru Sasaki, Hajime Akimoto
  • Patent number: 11189761
    Abstract: An image display device includes a plurality of pixels each of which includes a plurality of first subpixels and a second subpixel. The plurality of first subpixels is configured to emit red light, green light, and blue light. The second subpixel is configured to emit blue light. The plurality of pixels includes at least one pixel in which the plurality of first subpixels includes a defective subpixel which is supposed to emit predetermined light with a predetermined color. The second subpixel includes a light-emitting element and a wavelength conversion layer provided over the light-emitting element to convert emission light emitted from the light-emitting element to converted light with the predetermined color if the predetermined color is red or green.
    Type: Grant
    Filed: December 26, 2019
    Date of Patent: November 30, 2021
    Assignee: NICHIA CORPORATION
    Inventor: Hajime Akimoto
  • Publication number: 20210366373
    Abstract: An image display device includes pixels arranged in a matrix form on a grass. Each of the pixels includes: a drive circuit disposed on the grass and configured to receive a power supply control signal and an analog image signal; and an inorganic semiconductor light emitting element mounted on the drive circuit and electrically connected to the drive circuit. The inorganic semiconductor light emitting element is configured to emit a light based on a driving current provided from the drive circuit. The power supply control signal is applied at once to the pixels. The drive circuit is configured to control a grayscale of a light emitted by the inorganic semiconductor light emitting element by controlling a pulse width of a driving current having an amplitude corresponding to a voltage of the power supply control signal based on a voltage of the analog image signal.
    Type: Application
    Filed: August 6, 2021
    Publication date: November 25, 2021
    Applicant: NICHIA CORPORATION
    Inventor: Hajime AKIMOTO
  • Publication number: 20210359244
    Abstract: A display device includes a flexible substrate including a first surface and a second surface facing the first surface; a TFT array layer provided on the first surface; a display element layer provided on the TFT array layer; a first heat releasing layer provided on the second surface; a first protective layer provided on the same side as the second surface; a second heat releasing layer provided on the display element layer; and a second protective layer provided on the display element layer. The second heat releasing layer has a light transmittance of 90% or higher.
    Type: Application
    Filed: August 2, 2021
    Publication date: November 18, 2021
    Inventors: Kenta Hiraga, Hajime Akimoto
  • Patent number: 11175760
    Abstract: The method for manufacturing a display device includes forming a light emitting element and a terminal on a substrate, forming a sealing film including a first inorganic insulating film and a second inorganic insulating film to cover the light emitting element and the terminal, forming a resist having a taper shape in which a thickness of an end portion on the sealing film becomes thinner as it goes to the terminal side by using a gray-tone mask, forming a taper shape in which thicknesses in end portions of the first inorganic insulating film and the second inorganic insulating film becomes thinner as it goes to the terminal side by etching, forming a touch electrode above the sealing film and forming wiring connected to the terminal via the end portions together with connecting to the touch electrode for detecting a touched position.
    Type: Grant
    Filed: September 8, 2020
    Date of Patent: November 16, 2021
    Assignee: Japan Display Inc.
    Inventors: Yuko Matsumoto, Hajime Akimoto, Mitsuhide Miyamoto, Yusuke Tada
  • Publication number: 20210296611
    Abstract: A display device has a first electrode provided corresponding to each of a plurality of pixels in a region in which the plurality of pixels is provided, a second electrode provided over the plurality of pixels and extending to a contact region provided outside the pixel region, a light emitting layer provided between the first electrode and the second electrode, a third electrode provided in the contact region, an organic insulating layer covering the third electrode and provided with a contact hole exposing the third electrode, and a connection portion between the second electrode and the third electrode in the contact hole, wherein the maximum distance between any two points on the outer periphery of the connection portion is 1 ?m or more and 100 ?m or less.
    Type: Application
    Filed: June 7, 2021
    Publication date: September 23, 2021
    Inventors: Mitsuhide MIYAMOTO, Hajime AKIMOTO, Yuko MATSUMOTO, Yusuke TADA
  • Patent number: 11107394
    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: November 25, 2020
    Date of Patent: August 31, 2021
    Assignee: NICHIA CORPORATION
    Inventor: Hajime Akimoto
  • Patent number: 11101450
    Abstract: A display device includes a flexible substrate including a first surface and a second surface facing the first surface; a TFT array layer provided on the first surface; a display element layer provided on the TFT array layer; a first heat releasing layer provided on the second surface; a first protective layer provided on the same side as the second surface; a second heat releasing layer provided on the display element layer; and a second protective layer provided on the display element layer. The second heat releasing layer has a light transmittance of 90% or higher.
    Type: Grant
    Filed: December 30, 2019
    Date of Patent: August 24, 2021
    Assignee: Japan Display Inc.
    Inventors: Kenta Hiraga, Hajime Akimoto