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: 20200212269
    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: December 26, 2019
    Publication date: July 2, 2020
    Applicant: NICHIA CORPORATION
    Inventor: Hajime AKIMOTO
  • Patent number: 10672845
    Abstract: A display device according to an embodiment of the present invention includes: an underlying structure layer; a first lower electrode that is arranged on the underlying structure layer; multiple lower electrodes including a second lower electrode adjacent to the first lower electrode; an organic layer that is arranged on the multiple lower electrodes; an upper electrode that is arranged on the organic layer; a first through hole that is arranged between the first lower electrode and the second lower electrode and includes a first inorganic layer at least in a part of an inner face; and a second inorganic layer that is arranged on the upper electrode and is in contact with the first inorganic layer in the inner face of the first through hole.
    Type: Grant
    Filed: July 2, 2018
    Date of Patent: June 2, 2020
    Assignee: Japan Display Inc.
    Inventors: Koji Yasukawa, Hajime Akimoto
  • Patent number: 10672840
    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: June 26, 2019
    Date of Patent: June 2, 2020
    Assignee: Japan Display Inc.
    Inventors: Mitsuhide Miyamoto, Hajime Akimoto
  • Publication number: 20200167042
    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: Application
    Filed: January 30, 2020
    Publication date: May 28, 2020
    Inventors: Yusuke TADA, Hajime AKIMOTO
  • Publication number: 20200159356
    Abstract: A display device includes a substrate having an insulating surface, a pixel part having a plurality of pixels on the insulating surface, a terminal part including a first terminal arranged in a region outside the pixel part on the insulating surface, and a second terminal arranged in a region inside the first terminal, a wiring part including a first wiring arranged between the pixel part and the terminal part, a sensing part overlapped on the pixel part, and a sealing part covering the pixel part and the wiring part. The first wiring included in the wiring part is electrically connected to a first detection electrode at an opening provided in the second inorganic insulating layer, and the first wiring extends to an outer region of the second inorganic insulating layer and is electrically connected to the second terminal.
    Type: Application
    Filed: January 27, 2020
    Publication date: May 21, 2020
    Inventors: Yusuke TADA, Hajime Akimoto
  • Publication number: 20200136082
    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: December 30, 2019
    Publication date: April 30, 2020
    Inventors: Kenta Hiraga, Hajime Akimoto
  • Patent number: 10593742
    Abstract: A display device according to an embodiment of the present invention includes: a first substrate; light emitting elements arranged on the first substrate and including electrodes; a first insulation layer covering an edge of each of the electrodes on the first substrate; a second insulating section arranged on the light emitting elements and overlapping with the light emitting elements in plan view; a third insulating section arranged the banks, overlapping with the banks in plan view and having a lower refractive index than a refractive index of the second insulating section.
    Type: Grant
    Filed: August 29, 2018
    Date of Patent: March 17, 2020
    Assignee: Japan Display Inc.
    Inventors: Chunche Ma, Hajime Akimoto
  • Patent number: 10592030
    Abstract: Provided is a display device including a plurality of pixels and a touch sensor overlapping with the plurality of pixels, the touch sensor. The touch sensor possesses: a first wiring arranged in a first direction and including a plurality of first electrodes; and a second wiring arranged in a second direction intersecting the first direction and including a plurality of second electrodes. Each of the first electrodes and each of the second electrodes vary in width continuously or stepwise in the first direction and the second direction, respectively, and satisfy a certain relationship with respect to an area and a total length of sides thereof.
    Type: Grant
    Filed: June 1, 2018
    Date of Patent: March 17, 2020
    Assignee: Japan Display Inc.
    Inventors: Tohru Sasaki, Hajime Akimoto
  • Patent number: 10586839
    Abstract: A display device includes: a flexible substrate; a pixel over the flexible substrate, the pixel including a transistor and a display element; a first wiring for transmitting a signal to the pixel, the first wiring extending in a first direction; a second wiring extending in a second direction intersecting the first direction; an inorganic insulating layer on a higher level than the first wiring or the second wiring; and an organic insulating layer on a higher level than the inorganic insulating layer, wherein the inorganic insulating layer has an opening exposing a part of the upper surface of the first wiring or the second wiring is exposed, and the organic insulating layer is provided in such a way as to fill the opening.
    Type: Grant
    Filed: June 25, 2019
    Date of Patent: March 10, 2020
    Assignee: Japan Display Inc.
    Inventors: Yasukazu Kimura, Takuma Nishinohara, Toshihiko Itoga, Hajime Akimoto
  • Patent number: 10566578
    Abstract: A display device includes a first substrate, a coloring layer formed on the first substrate, a transparent insulating layer having a first refractive index formed on the coloring layer, a first transparent electrode having a higher second refractive index than the first refractive index formed on the transparent insulating layer, an organic layer having a light emitting layer formed on the first transparent electrode, and a second transparent electrode formed on the organic layer.
    Type: Grant
    Filed: March 6, 2017
    Date of Patent: February 18, 2020
    Assignee: Japan Display Inc.
    Inventors: Shigeru Sakamoto, Hajime Akimoto
  • Patent number: 10564462
    Abstract: Disclosed is a touch sensor including a first layer, a second layer over the first layer, and a third layer over the second layer. The first layer has a plurality of first insulators arranged in a stripe form and extending in a first direction, and a plurality of first wirings arranged in a stripe form and extending in a second direction intersecting with the first direction. The second layer includes an insulating material. The third layer has a plurality of second insulators arranged in a stripe form and extending in the second direction, and a plurality of second wirings arranged in a stripe form and extending in the first direction. The plurality of first insulators and the plurality of the first wirings are woven with each other, and the plurality of second insulators and the plurality of the second wirings are woven with each other.
    Type: Grant
    Filed: June 30, 2017
    Date of Patent: February 18, 2020
    Assignee: Japan Display Inc.
    Inventors: Hsiang-Yuan Cheng, Hajime Akimoto
  • Publication number: 20200043405
    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: July 30, 2019
    Publication date: February 6, 2020
    Applicant: NICHIA CORPORATION
    Inventor: Hajime AKIMOTO
  • Patent number: 10553829
    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: May 3, 2018
    Date of Patent: February 4, 2020
    Assignee: Japan Display Inc.
    Inventors: Kenta Hiraga, Hajime Akimoto
  • Publication number: 20200019281
    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: Application
    Filed: September 23, 2019
    Publication date: January 16, 2020
    Applicant: Japan Display Inc.
    Inventors: Mitsuhide MIYAMOTO, Hajime Akimoto, Yuko Matsumoto, Yusuke Tada
  • Publication number: 20190393442
    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 19, 2019
    Publication date: December 26, 2019
    Inventors: Mitsuhide MIYAMOTO, Hajime AKIMOTO, Yuko MATSUMOTO, Yusuke TADA
  • Patent number: 10510801
    Abstract: It is an object of the present invention to provide an image display device in which it is possible to adjust the spectrum of light emitted by pixels and adjust the chromaticity of the light emitted by the pixels. Provided is an image display device having a pixel region in which each pixel comprises a plurality of subpixels and the pixels are arranged in a matrix, wherein each of the subpixels includes a plurality of light-emitting layers overlapping each other with an electrode sandwiched therebetween, and the plurality of light-emitting layers each contain a quantum dot material and have different peak emission wavelengths from each other.
    Type: Grant
    Filed: August 21, 2015
    Date of Patent: December 17, 2019
    Assignee: Japan Display Inc.
    Inventors: Toshihiro Sato, Hajime Akimoto
  • Publication number: 20190369788
    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: Application
    Filed: August 8, 2019
    Publication date: December 5, 2019
    Applicant: Japan Display Inc.
    Inventors: Yusuke TADA, Hajime AKIMOTO
  • Patent number: 10490603
    Abstract: A display device may include an insulation layer having openings, the insulation layer having opening edges around the respective openings; pixel electrodes in the respective openings and on the respective opening edges; an electroluminescence layer continuously on the pixel electrodes, the electroluminescence layer consisting of some layers including a bottom layer thereof, the electroluminescence layer including a light emitting layer in one of the layers except for at least the bottom layer, the light emitting layer overlapping with a corresponding one of the pixel electrodes; and a counter electrode on the electroluminescence layer.
    Type: Grant
    Filed: April 3, 2018
    Date of Patent: November 26, 2019
    Assignee: Japan Display Inc.
    Inventors: Chunche Ma, Hajime Akimoto, Masakazu Gunji
  • Patent number: 10475863
    Abstract: A sheet display includes a display region including a plurality of pixels arranged in a matrix and photodiodes arranged on regions not overlapped with the plurality of pixels in the matrix; and a laminated structure including at least a metal layer and provided on the photodiode, in which in at least two layers including the metal layer in the laminated structure, slits or holes are provided such that external light is incident on the photodiode, and a slit or a hole formed on one of the at least two layers and a slit or a hole formed on another of the at least two layers are provided by being overlapped with each other.
    Type: Grant
    Filed: January 2, 2018
    Date of Patent: November 12, 2019
    Assignee: Japan Display Inc.
    Inventor: Hajime Akimoto
  • Publication number: 20190326556
    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: Application
    Filed: July 3, 2019
    Publication date: October 24, 2019
    Inventors: Yuki HAMADA, Hajime Akimoto