Patents by Inventor Hayata AOKI

Hayata AOKI 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: 20250201554
    Abstract: A multilayer structure includes an amorphous substrate having an insulating surface, an orientation layer on the amorphous substrate; and a semiconductor pattern containing gallium nitride on the orientation layer, the orientation layer has a first region overlapping the semiconductor pattern and a second region not overlapping the semiconductor pattern. A top surface of the second region is positioned lower than a top surface of the first region. The orientation layer has a groove in the second region that extends from a lower end of the semiconductor pattern to the first region, and in a plan view, the groove overlaps the semiconductor pattern.
    Type: Application
    Filed: February 28, 2025
    Publication date: June 19, 2025
    Applicant: Japan Display Inc.
    Inventors: Hayata AOKI, Masumi NISHIMURA
  • Publication number: 20250194350
    Abstract: According to one embodiment, in a display device, a first pixel includes a first side wall and a first upper layer of a protective layer, a second pixel includes a second side wall and a second upper layer of the protective layer, a third pixel including a third side wall and a third upper layer of the protective layer, the first upper layer, the second upper layer, and the third upper layer have thicknesses equal to each other, the first side wall has a thickness greater than or equal to that of the second side wall, and the thicknesses of the first side wall and the second side wall are greater than the thickness of the third side wall.
    Type: Application
    Filed: December 11, 2024
    Publication date: June 12, 2025
    Applicant: Japan Display Inc.
    Inventors: Hayata AOKI, Jun NITTA, Marina MOCHIZUKI
  • Publication number: 20250194195
    Abstract: A multilayered structure includes an amorphous substrate having an insulating surface; an orientation layer having a pattern on the amorphous substrate having the insulating surface; a semiconductor layer containing gallium nitride having a pattern arranged on the orientation layer; and a side protection portion containing gallium nitride arranged on a side surface of the orientation layer, wherein the semiconductor layer and the side protection portion are separated at the side surface of the orientation layer.
    Type: Application
    Filed: February 20, 2025
    Publication date: June 12, 2025
    Applicant: Japan Display Inc.
    Inventors: Hayata AOKI, Masumi NISHIMURA
  • Publication number: 20250194351
    Abstract: According to one embodiment, in a display device, each of a plurality of pixels includes, on a base, an anode, an organic EL layer provided on the anode, a protective layer provided to cover a side surface of the organic EL layer, and a cathode provided on the protective layer and in an aperture of a bank, so as to be in contact with the organic EL layer, and the protective layer includes a side wall provided on a side surface of the organic EL layer, and a first upper layer provided on an upper surface of the organic EL layer, and a sacrificial layer is provided on an upper surface of the first upper layer so as to be in close proximity to the organic EL layer.
    Type: Application
    Filed: December 11, 2024
    Publication date: June 12, 2025
    Applicant: Japan Display Inc.
    Inventors: Hayata AOKI, Jun NITTA, Marina MOCHIZUKI
  • Publication number: 20250191914
    Abstract: A multilayered structure includes an amorphous substrate having an insulating surface; an orientation layer having a pattern on the amorphous substrate; and a semiconductor layer comprising a gallium nitride having a pattern on the orientation layer, wherein an angle between a bottom surface and a side surface of the orientation layer is greater than 60° and less than 90°. A width of a cross-section of the orientation layer parallel to a bottom surface of the orientation layer is less than a width of the bottom surface of the orientation layer between the bottom surface of the orientation layer and a top surface of the orientation layer.
    Type: Application
    Filed: February 21, 2025
    Publication date: June 12, 2025
    Applicant: Japan Display Inc.
    Inventors: Hayata AOKI, Masumi NISHIMURA
  • Publication number: 20250194377
    Abstract: According to one embodiment, in a display device, a first anode of a first pixel includes a first reflective electrode and a first transparent electrode, a second anode of a second pixel includes a second reflective electrode and a second transparent electrode, a third anode of a third pixel includes a third reflective electrode and a third transparent electrode, and a first thickness of the first transparent electrode, a second thickness of the second transparent electrode, and a third thickness of the third transparent electrode are less in this order.
    Type: Application
    Filed: December 5, 2024
    Publication date: June 12, 2025
    Applicant: Japan Display Inc.
    Inventors: Hayata AOKI, Jun NITTA, Marina MOCHIZUKI
  • Publication number: 20250191913
    Abstract: A semiconductor device includes an amorphous substrate with an insulating surface; an orientation pattern on the amorphous substrate; and a semiconductor pattern including gallium nitride on a top surface of the orientation pattern. The orientation pattern includes a first pattern portion with a side surface having a first angle relative to a bottom surface, and a second pattern portion with a side surface having a second angle smaller than the first angle relative to the bottom surface and located lower than the first pattern portion.
    Type: Application
    Filed: February 21, 2025
    Publication date: June 12, 2025
    Applicant: Japan Display Inc.
    Inventors: Hayata AOKI, Masumi NISHIMURA
  • Patent number: 12328994
    Abstract: An electronic device includes an insulating base including a strip-shaped portion having elasticity and an island-shaped portion connected to the strip-shaped portion, an organic insulating film disposed on the insulating base, an inorganic insulating film disposed on the organic insulating film, a wiring disposed between the strip-shaped portion and the organic insulating film, an electrical element disposed on the inorganic insulating film and electrically connected to the wiring, in the island-shaped portion, a barrier wall overlapping the island-shaped portion and the strip-shaped portion and surrounding the electrical element, and a sealing film covering the electrical element.
    Type: Grant
    Filed: May 27, 2022
    Date of Patent: June 10, 2025
    Assignee: Japan Display Inc.
    Inventors: Masatomo Hishinuma, Hiroumi Kinjo, Hayata Aoki
  • Publication number: 20250143094
    Abstract: According to one embodiment, a display device includes a substrate, an organic insulating layer provided on the substrate and having a recess portion, a lower electrode provided in the recess portion and embedded in the organic insulating layer, a rib which has a pixel aperture overlapping the lower electrode, an auxiliary line which includes a conductive lower portion and an upper portion, an upper electrode which faces the lower electrode and is connected to the auxiliary line, and an organic layer which is provided between the lower electrode and the upper electrode. An upper surface of the lower electrode is exposed from the organic insulating layer in the pixel aperture and is in contact with the organic layer.
    Type: Application
    Filed: October 25, 2024
    Publication date: May 1, 2025
    Applicant: Japan Display Inc.
    Inventors: Hayata AOKI, Hiroumi KINJO
  • Patent number: 12268069
    Abstract: According to one embodiment, a display device includes a lower electrode arranged on a first insulating layer, a second insulating layer arranged on the first insulating layer, having an opening overlapping the lower electrode, and being in a lattice form, a feed line arranged on the second insulating layer, having a first line portion, a second line portion, and a third line portion being continuous with the first and second line portions and having a different width from the first and second line portions, an organic layer arranged in the opening and covering the lower electrode, and an upper electrode being in contact with the first, second and third line portions, and covering the organic layer.
    Type: Grant
    Filed: October 5, 2023
    Date of Patent: April 1, 2025
    Assignee: Japan Display Inc.
    Inventors: Hayata Aoki, Hiroumi Kinjo, Masumi Nishimura
  • Patent number: 12219804
    Abstract: According to one embodiment, a display device includes an insulating substrate, a first insulating layer disposed on the insulating substrate, a lower electrode disposed on the first insulating layer, a second insulating layer disposed on the first insulating layer and including an opening overlapping the lower electrode, an organic layer including a light-emitting layer, disposed in the opening and covering the lower electrode, an upper electrode comprising a first end surface, which is an inclined surface, directly above the second insulating layer and stacked on the organic layer and an optical adjustment layer including a second end surface on an inner side with respect to the first end surface and in contact with the upper electrode.
    Type: Grant
    Filed: January 13, 2022
    Date of Patent: February 4, 2025
    Assignee: Japan Display Inc.
    Inventors: Hayata Aoki, Masumi Nishimura
  • Publication number: 20240341114
    Abstract: According to one embodiment, a display device includes a lower electrode, a second insulating layer including an opening overlapping the lower electrode, an organic layer including a light-emitting layer and a functional layer, disposed in the opening and covering the lower electrode and an upper electrode covering the organic layer. The functional layer includes a first region located between the lower electrode and the light-emitting layer and a second region including an end surface located directly above the second insulating layer. A dopant concentration of a guest material in the second region is lower than the dopant concentration of the guest material in the first region.
    Type: Application
    Filed: June 21, 2024
    Publication date: October 10, 2024
    Applicant: Japan Display Inc.
    Inventors: Hayata AOKI, Masumi NISHIMURA, Jun NITTA
  • Patent number: 12114550
    Abstract: According to one embodiment, a display device includes a lower electrode arranged on a first insulating layer, a second insulating layer arranged on the first insulating layer, having an opening overlapping the lower electrode, and being in a lattice form, a feed line arranged on the second insulating layer, having a first line portion, a second line portion, and a third line portion being continuous with the first and second line portions and having a different width from the first and second line portions, an organic layer arranged in the opening and covering the lower electrode, and an upper electrode being in contact with the first, second and third line portions, and covering the organic layer.
    Type: Grant
    Filed: October 5, 2023
    Date of Patent: October 8, 2024
    Assignee: Japan Display Inc.
    Inventors: Hayata Aoki, Hiroumi Kinjo, Masumi Nishimura
  • Patent number: 12069925
    Abstract: According to one embodiment, a display device includes a first area including a pixel and a second area different from the first area, wherein the pixel includes a pixel electrode, an organic material layer including a light-emitting layer, a first common electrode, and a second common electrode having transmittance higher than that of the first insulating layer, the second area is an area not overlapping the light-emitting layer in plan view, the second area is a transparent area, and the second area does not comprise the first common electrode provided therein.
    Type: Grant
    Filed: March 21, 2022
    Date of Patent: August 20, 2024
    Assignee: Japan Display Inc.
    Inventors: Hayata Aoki, Masashi Tsubuku, Toshinari Sasaki
  • Publication number: 20240274648
    Abstract: A display device includes a transistor on a first region of an amorphous substrate and an LED on a second region different from the first region of the amorphous substrate. Each of the transistor and the LED includes a conductive alignment layer, a first semiconductor layer over the conductive alignment layer, and a second semiconductor layer over the first semiconductor layer. The conductive alignment layer, the first semiconductor layer, and the second semiconductor layer of the transistor are the same layer as the conductive alignment layer, the first semiconductor layer, and the second semiconductor layer of the LED, respectively. In the transistor, the first semiconductor layer is in contact with the second semiconductor layer. In the LED, a light emitting layer is provided between the first semiconductor layer and the second semiconductor layer.
    Type: Application
    Filed: April 26, 2024
    Publication date: August 15, 2024
    Applicant: Japan Display Inc.
    Inventors: Hiroumi KINJO, Masumi NISHIMURA, Hayata AOKI
  • Publication number: 20240274752
    Abstract: A light emitting device includes a plurality of pixels arranged in a matrix in a first direction and in a second direction orthogonal to the first direction. Each of the plurality of pixels includes an amorphous substrate, a semi-transparent reflective layer over the amorphous substrate, a first insulating alignment layer over the semi-transparent reflective layer, a first semiconductor layer over the first insulating alignment layer, a light emitting layer over the first semiconductor layer, a second semiconductor layer over the light emitting layer, and an electrode layer over the second semiconductor layer. Each of the first semiconductor layer, the light emitting layer, and the second semiconductor layer includes gallium nitride.
    Type: Application
    Filed: March 26, 2024
    Publication date: August 15, 2024
    Applicant: Japan Display Inc.
    Inventors: Hayata AOKI, Masumi NISHIMURA, Hiroumi KINJO
  • Publication number: 20240274647
    Abstract: A light emitting device includes a plurality of pixels arranged in a matrix in a first direction and in a second direction orthogonal to the first direction. Each of the plurality of pixels arranged in a matrix includes a substrate, a conductive alignment layer over the substrate, a first nitride semiconductor layer over the conductive alignment layer, a second nitride semiconductor layer comprising a light emitting layer, over the first nitride semiconductor layer, and an electrode layer over the second nitride semiconductor layer. The first nitride semiconductor layer and the second nitride semiconductor layer are provided in an island shape. The plurality of pixels arranged in a matrix commonly includes the substrate.
    Type: Application
    Filed: February 23, 2024
    Publication date: August 15, 2024
    Applicant: Japan Display Inc.
    Inventors: Masumi NISHIMURA, Shinichiro OKA, Hayata AOKI, Hiroumi KINJO
  • Publication number: 20240276784
    Abstract: According to one embodiment, a display device includes a plurality of pixels including a first pixel, a second pixel and a third pixel, each of the plurality of pixels include, an anode, an organic EL layer provided on the anode, at least one set of sidewall pairs provided to cover a side surface of the organic EL layer and a cathode provided in an opening portion of the bank and in contact with the organic EL layer. The at least one set of side wall pairs includes a first sidewall formed of aluminum oxide and a second sidewall formed of silicon nitride. The first pixel includes at least two sets of the side wall pairs, and the second pixel includes at least one set of the sidewall pair.
    Type: Application
    Filed: February 9, 2024
    Publication date: August 15, 2024
    Applicant: Japan Display Inc.
    Inventors: Hayata AOKI, Jun NITTA, Marina MOCHIZUKI
  • Publication number: 20240258416
    Abstract: A transistor according to an embodiment of the present invention includes an amorphous substrate, a conductive alignment layer over the amorphous substrate, a heterojunction structure including a semiconductor layer and a polarization layer in contact with the semiconductor layer over the conductive alignment layer, and a gate electrode over the heterojunction structure. The heterojunction structure comprises a recessed portion in a region overlapping the gate electrode. The recessed portion may be provided in the polarization layer or the semiconductor layer.
    Type: Application
    Filed: March 6, 2024
    Publication date: August 1, 2024
    Applicant: Japan Display Inc.
    Inventors: Hiroumi KINJO, Masumi NISHIMURA, Hayata AOKI
  • Publication number: 20240260307
    Abstract: A display device includes a substrate, and a plurality of light-emitting elements each composed of a pixel electrode, a lower buffer layer, a light-emitting layer, an upper buffer layer, and a counter electrode stacked in order on the substrate. The lower buffer layer comprises a first hole transport layer, a second hole transport layer, and a third hole transport layer stacked in order on the pixel electrode, and refractive index of the second hole transport layer is higher than refractive index of the first hole transport layer and refractive index of the third hole transport layer.
    Type: Application
    Filed: January 24, 2024
    Publication date: August 1, 2024
    Applicant: Japan Display Inc.
    Inventor: Hayata AOKI