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: 20260231643
    Abstract: According to one embodiment, a display device includes a first lower electrode, a second lower electrode and a third lower electrode, a rib including apertures, a first organic layer provided on the first lower electrode, a second organic layer provided on the second lower electrode, a third organic layer provided on the third lower electrode, and an upper electrode. At least one of the first lower electrode, the second lower electrode and the third lower electrode includes a flat portion and a plurality of inclined portions which incline relative to the flat portion in the aperture. The inclined portions are arrayed in matrix in first and second directions which intersect each other in plan view.
    Type: Application
    Filed: April 2, 2026
    Publication date: August 6, 2026
    Applicant: Magnolia White Corporation
    Inventors: Hayata AOKI, Shinya ASAKURA
  • Patent number: 12701868
    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: Grant
    Filed: February 9, 2024
    Date of Patent: August 4, 2026
    Assignee: JAPAN DISPLAY INC.
    Inventors: Hayata Aoki, Jun Nitta, Marina Mochizuki
  • Patent number: 12660458
    Abstract: According to one embodiment, a display device includes a first emitting layer provided in each of first pixels, a second emitting layer provided in each of second pixels, a third emitting layer provided in each of third pixels and a color filter provided to oppose the third emitting layer, and a threshold of the third emitting layer is higher than a threshold of the first emitting layer and a threshold of the second emitting layer, and the color filter overlaps a boundary between each first emitting layer and a respective third emitting layer and a boundary between a second emitting layer and a respective third emitting layer.
    Type: Grant
    Filed: May 10, 2023
    Date of Patent: June 16, 2026
    Assignee: MAGNOLIA WHITE CORPORATION
    Inventors: Takahiro Ushikubo, Hayata Aoki
  • Patent number: 12652924
    Abstract: According to one embodiment, a display device includes a first lower electrode, a second lower electrode and a third lower electrode, a rib including apertures, a first organic layer provided on the first lower electrode, a second organic layer provided on the second lower electrode, a third organic layer provided on the third lower electrode, and an upper electrode. At least one of the first lower electrode, the second lower electrode and the third lower electrode includes a flat portion and a plurality of inclined portions which incline relative to the flat portion in the aperture. The inclined portions are arrayed in matrix in first and second directions which intersect each other in plan view.
    Type: Grant
    Filed: September 13, 2023
    Date of Patent: June 9, 2026
    Assignee: MAGNOLIA WHITE CORPORATION
    Inventors: Hayata Aoki, Shinya Asakura
  • Patent number: 12641995
    Abstract: According to one embodiment, a display device includes a first lower electrode and a second lower electrode, a power supply line, a first organic layer including a light emitting layer and covering the first lower electrode, a second organic layer including a light emitting layer and covering the second lower electrode, a first upper electrode being in contact with the power supply line and covering the first organic layer, a second upper electrode being in contact with the power supply line and covering the second organic layer, and a first inorganic insulating film covering the first upper electrode and the second upper electrode and exposing the power supply line.
    Type: Grant
    Filed: August 3, 2023
    Date of Patent: May 26, 2026
    Assignee: MAGNOLIA WHITE CORPORATION
    Inventors: Hayata Aoki, Masumi Nishimura, Hiroumi Kinjo
  • Patent number: 12622133
    Abstract: To provide a display device, in which deterioration in characteristics is small even when some of layers are exposed to a solvent or an atmosphere when photolithography is performed, and a method for manufacturing the display device. The display device having a pixel including a plurality of sub-pixels includes: a substrate; a lower electrode provided on an upper side of the substrate; an organic EL layer provided on the lower electrode and including an emission layer configured to emit a different color for each sub-pixel; and an upper electrode disposed on an upper side of the organic EL layer. An exposure protection layer having transparency and conductivity provided for each sub-pixel is formed between the organic EL layer and the upper electrode. No emission layer is formed between the exposure protection layer and the upper electrode.
    Type: Grant
    Filed: July 24, 2023
    Date of Patent: May 5, 2026
    Assignee: Magnolia White Corporation
    Inventors: Takahiro Ushikubo, Hayata Aoki, Jun Nitta, Hiroumi Kinjo
  • Patent number: 12610662
    Abstract: A laminated structure includes a substrate, and a gallium nitride film on the substrate. Further, a laminated structure includes a substrate, an alignment layer having a c-axis orientation or a (111) orientation of a face-centered cubic structure, over the substrate, and a gallium nitride film on the alignment film. Furthermore, a laminated structure includes a substrate, a protective layer on the substrate, an alignment layer having a c-axis orientation or a (111) orientation of a face-centered cubic structure, over the protective layer, and a gallium nitride film on the alignment film. A surface arithmetic mean roughness (Ra) of a surface of the substrate is less than 0.33 nm.
    Type: Grant
    Filed: September 19, 2023
    Date of Patent: April 21, 2026
    Assignee: JAPAN DISPLAY INC.
    Inventors: Masumi Nishimura, Shinichiro Oka, Hiroumi Kinjo, Hayata Aoki
  • Publication number: 20250359400
    Abstract: A light-emitting element includes a substrate, an electroluminescent laminate over the substrate, an anode and a cathode electrically connected to the electroluminescent laminate, and a plurality of optical adjustment films over the electroluminescent laminate. The electroluminescent laminate includes a plurality of functional layers containing a gallium nitride-based material. The plurality of optical adjustment films is configured so that refractive indices decrease with increasing distance from the electroluminescent laminate. The plurality of optical adjustment films may independently contain a material selected from aluminum nitride, silicon nitride, silicon oxide, titanium oxide, zirconium oxide, chromium oxide, aluminum oxide, indium oxide, lead sulfide, and a polymer containing sulfur, halogen, or phosphorus.
    Type: Application
    Filed: July 28, 2025
    Publication date: November 20, 2025
    Applicant: Japan Display Inc.
    Inventors: Masumi NISHIMURA, Hayata AOKI
  • Patent number: 12477898
    Abstract: According to one embodiment, a display device includes a first electrode, an organic layer disposed on the first electrode, and a second electrode covering the organic layer. The organic layer includes a first layer having a first edge portion and a second layer between the first layer and the second electrode. The second layer covers the first edge portion.
    Type: Grant
    Filed: January 20, 2022
    Date of Patent: November 18, 2025
    Assignee: Magnolia White Corporation
    Inventors: Hiroumi Kinjo, Hayata Aoki, Masakazu Gunji
  • Patent number: 12457843
    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, disposed in the opening and covering the lower electrode and an upper electrode covering the organic layer. The light-emitting layer includes a first bottom surface, a first end surface and a second end surface intersecting the first end surface. An angle between the first end surface and the first bottom surface in a cross-sectional view along a first direction is greater than an angle between the second end surface and the first bottom surface in a cross-sectional view along a second direction.
    Type: Grant
    Filed: January 20, 2022
    Date of Patent: October 28, 2025
    Assignee: Magnolia White Corporation
    Inventors: Hayata Aoki, Masumi Nishimura
  • Patent number: 12419173
    Abstract: According to one embodiment, an electronic device includes a lower electrode, a second insulating layer including an opening overlapping the lower electrode, an organic layer covering the lower electrode at the opening, an upper electrode covering the organic layer, and a barrier wall on the second insulating layer. The barrier wall includes a first layer formed of a metal material and including a first side surface which is in contact with the upper electrode, a second layer disposed above the first layer and extending from the first side surface toward the opening, and a protective layer formed of a material different from a material of the organic layer and covering at least an upper surface of the second layer.
    Type: Grant
    Filed: June 1, 2022
    Date of Patent: September 16, 2025
    Assignee: Magnolia White Corporation
    Inventors: Masumi Nishimura, Hayata Aoki
  • Patent number: 12419182
    Abstract: According to one embodiment, a display device includes a first bottom electrode, a second bottom electrode, a first organic layer covering the first bottom electrode, a second organic layer covering the second bottom electrode, a first top electrode covering the first organic layer, a second top electrode covering the second organic layer, a first optical adjustment layer disposed on the first top electrode, a second optical adjustment layer disposed on the second top electrode, and a transparent conductive layer covering the first optical adjustment layer and the second optical adjustment layer, and being in contact with the first top electrode and the second top electrode.
    Type: Grant
    Filed: June 22, 2022
    Date of Patent: September 16, 2025
    Assignee: Magnolia White Corporation
    Inventors: Masumi Nishimura, Hayata Aoki, Hiroumi Kinjo
  • Publication number: 20250287792
    Abstract: According to one embodiment, a display device includes a first subpixel and a second subpixel that are spaced apart from each other and illuminate in colors different from each other, a rib layer, and a first light-shielding film located above the rib layer. The rib layer includes a first pixel aperture, which has a first edge and overlaps the first subpixel, and a second pixel aperture, which has a second edge and overlaps the second subpixel. The first light-shielding film includes a first aperture, which has a third edge and overlaps the first pixel aperture, and a second aperture, which has a fourth edge and overlaps the second pixel aperture. A distance between the second edge and the fourth edge is shorter than a distance between the first edge and the third edge.
    Type: Application
    Filed: February 25, 2025
    Publication date: September 11, 2025
    Applicant: Japan Display Inc.
    Inventors: Hayata AOKI, Tomohiko NAGANUMA
  • Publication number: 20250287805
    Abstract: According to one embodiment, an electronic device includes a lower electrode, a second insulating layer including an opening overlapping the lower electrode, an organic layer covering the lower electrode at the opening, an upper electrode covering the organic layer, and a barrier wall on the second insulating layer. The barrier wall includes a first layer formed of a metal material and including a first side surface which is in contact with the upper electrode, a second layer disposed above the first layer and extending from the first side surface toward the opening, and a protective layer formed of a material different from a material of the organic layer and covering at least an upper surface of the second layer.
    Type: Application
    Filed: May 22, 2025
    Publication date: September 11, 2025
    Applicant: Japan Display Inc.
    Inventors: Masumi NISHIMURA, Hayata AOKI
  • Patent number: 12389751
    Abstract: In an embodiment, a display device comprises a substrate, display elements, a partition wall, a metal layer, and an inorganic layer. Each of the display elements comprises first and second electrode and an organic layer. The partition wall is between the display elements. The metal layer is along the partition wall. The inorganic layer covers the display elements, the partition wall, and the metal layer. The partition wall includes a first portion, and a second portion which is smaller in width than the first portion. The metal layer covers a first area on a side surface of the second portion. The inorganic layer covers a second area on the side surface. The second area is between the first area and the first portion.
    Type: Grant
    Filed: May 26, 2022
    Date of Patent: August 12, 2025
    Assignee: Japan Display Inc.
    Inventors: Masumi Nishimura, Hayata Aoki, Hiroumi Kinjo
  • Patent number: 12389749
    Abstract: A display device includes a base, display elements, a partition wall, first to third inorganic layers and a resin layer. The display element includes first and second electrodes and a light-emitting layer between the electrodes. The partition wall is located between adjacent pair of the display elements. The first inorganic layer covers the display elements and the partition wall. The second inorganic layer covers the first inorganic layer. The resin layer covers the second inorganic layer. The third inorganic layer covers the resin layer.
    Type: Grant
    Filed: April 29, 2022
    Date of Patent: August 12, 2025
    Assignee: Japan Display Inc.
    Inventors: Hiroumi Kinjo, Hayata Aoki, Masumi Nishimura
  • Publication number: 20250220999
    Abstract: A laminated structure includes an amorphous substrate having an insulating surface, an orientation pattern on the amorphous substrate, an insulating layer in contact with a side surface of the orientation pattern and surrounding the periphery of the orientation pattern, and a semiconductor pattern containing gallium nitride on the orientation pattern, wherein the insulating layer has a first region overlapping the semiconductor pattern and a second region not overlapping the semiconductor pattern.
    Type: Application
    Filed: February 25, 2025
    Publication date: July 3, 2025
    Applicant: Japan Display Inc.
    Inventors: Hayata AOKI, Masumi NISHIMURA
  • 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: 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