Patents Assigned to Japan Display Inc.
  • Patent number: 11947231
    Abstract: According to one embodiment, a display device includes a gate line extending in a first direction, first and second source lines crossing the gate line and arranged in the first direction, a first light-shielding layer having first and second openings, and an oxide semiconductor layer crossing the gate line, and in the display device, the first opening and the second opening are arranged in a second direction crossing the first direction between the first source line and the second source line, the gate line is located between the first opening and the second opening, and the oxide semiconductor layer has a first overlapping portion overlapping the first opening.
    Type: Grant
    Filed: May 24, 2023
    Date of Patent: April 2, 2024
    Assignee: Japan Display Inc.
    Inventors: Hitoshi Tanaka, Kazuhide Mochizuki
  • Patent number: 11948394
    Abstract: According to an aspect, a detection device includes a pattern detector, a force detector, and a controller. The controller is configured to store reference data in advance, acquire new data, and determine whether an object pressed against a contact surface when the new data is acquired is a human finger based on difference between acquisition target data indicated by the reference data at a plurality of timings and the acquisition target data indicated by the new data at a plurality of timings. The timings are two timings or more that are included in a pressing operation period from start to end of pressing of an external object against the contact surface, and the force detected by the force detector is different between the timings.
    Type: Grant
    Filed: December 6, 2022
    Date of Patent: April 2, 2024
    Assignee: Japan Display Inc.
    Inventor: Takuya Shirasawa
  • Patent number: 11947750
    Abstract: A display device with a sensor in which deterioration of display quality is suppressed even when sensor wires are superimposed on respective slits of detection electrodes disposed side by side. The display device includes detection electrodes, sensor wires, pixels, scanning lines, and signal lines on a first insulating substrate. The detection electrodes are arrayed in a matrix in first and second directions. The sensor wires and signal lines are disposed alternately in the first direction and provided on the same layer. Switching elements of two of the pixels disposed side by side in the first direction each are coupled to one of the signal lines, and the signal line is superimposed on the corresponding detection electrode that straddles the two pixels. The sensor wires are disposed between the two pixels disposed side by side and superimposed on the respective slits of the two detection electrodes disposed side by side.
    Type: Grant
    Filed: January 19, 2023
    Date of Patent: April 2, 2024
    Assignee: Japan Display Inc.
    Inventors: Yoshihide Ohue, Yukiya Hirabayashi
  • Patent number: 11948908
    Abstract: An electronic device comprising: an array substrate having a first electrode and a second electrode; a first connecting member arranged on the first electrode; a first LED chip mounted on the first connecting member; a second connecting member arranged on the second electrode and being thicker than the first connecting member; and a second LED chip mounted on the second connecting member. A distance from a reference surface of the array substrate to a top surface of the second connecting member is larger than a distance from the reference surface to a top surface of the first connecting member.
    Type: Grant
    Filed: June 23, 2021
    Date of Patent: April 2, 2024
    Assignee: Japan Display Inc.
    Inventor: Kazuyuki Yamada
  • Publication number: 20240103662
    Abstract: Provided is a display device including a first dam surrounding the display area, a second dam surrounding the first dam, a first sensor electrode and a second sensor electrode overlapping the display area, a first sensor wiring and a second sensor wiring over the first dam and electrically connected to the first sensor electrode and the second sensor electrode, respectively, a first wiring under the second dam and electrically connected to the first sensor wiring at a first contact portion, and a second wiring under the second dam and electrically connected to the second sensor wiring at a second contact portion.
    Type: Application
    Filed: December 11, 2023
    Publication date: March 28, 2024
    Applicant: Japan Display Inc.
    Inventors: Hideyuki TAKAHASHI, Hiroshi TABATAKE, Sho YANAGISAWA
  • Publication number: 20240105902
    Abstract: A display device includes a substrate, a heat dissipation layer provided to a main surface of the substrate and including aluminum nitride, a plurality of light-emitting elements provided on the heat dissipation layer on the main surface of the substrate, an insulating film covering the heat dissipation layer, and cathode wiring provided on the insulating film in a peripheral region outside a display region of the substrate and electrically coupled to a cathode of the light-emitting elements. The heat dissipation layer is continuously provided from a region overlapping the light-emitting elements to the peripheral region, and the insulating film has a contact hole overlapping the cathode wiring and the heat dissipation layer in plan view from a direction perpendicular to the main surface of the substrate.
    Type: Application
    Filed: December 8, 2023
    Publication date: March 28, 2024
    Applicant: Japan Display Inc.
    Inventor: Masanobu IKEDA
  • Publication number: 20240105819
    Abstract: A method for manufacturing a semiconductor device includes depositing a first metal oxide film with aluminum as a major component on a substrate, depositing an amorphous oxide semiconductor film on the first metal oxide film under an oxygen partial pressure of 3% to 5%, processing the oxide semiconductor film into a patterned oxide semiconductor layer, crystallizing the oxide semiconductor layer by performing a first heat treatment on the patterned oxide semiconductor layer, processing the first metal oxide film using the crystallized oxide semiconductor layer as a mask, depositing a gate insulating film on the oxide semiconductor layer, and forming a gate electrode on the gate insulating film, wherein a thickness of the oxide semiconductor film is more than 10 nm and 30 nm or less.
    Type: Application
    Filed: September 26, 2023
    Publication date: March 28, 2024
    Applicant: Japan Display Inc.
    Inventors: Hajime WATAKABE, Masashi TSUBUKU, Toshinari SASAKI, Takaya TAMARU
  • Publication number: 20240106132
    Abstract: According to one embodiment, an intelligent reflecting surface includes a first substrate, a second substrate, a sealing material, a liquid crystal layer, and a first transfer. The first substrate includes a plurality of patch electrodes, and a first power supply pad. The second substrate includes a common electrode, and a first power receiving pad electrically connected to the common electrode. The first transfer is in contact with the first power supply pad and the first power receiving pad. An uppermost layer of the first power supply pad, which is in contact with the first transfer, is formed of a transparent conductive material. The first power receiving pad is formed of a transparent conductive material. The common electrode is formed of metal.
    Type: Application
    Filed: December 6, 2023
    Publication date: March 28, 2024
    Applicant: Japan Display Inc.
    Inventors: Mitsutaka OKITA, Shinichiro OKA
  • Publication number: 20240103322
    Abstract: A phase modulating device includes a first electrode; a second electrode; and a liquid crystal layer including a plurality of liquid crystal molecules and arranged between the first electrode and the second electrode, wherein a height of the liquid crystal layer from the first electrode toward the second electrode is 30 ?m or more and 50 ?m or less, and in a planar view of a first plane including the first electrode, the liquid crystal layer and the second electrode, the first plane intersecting with an in-plane direction of the first electrode, at least two liquid crystal molecules arranged adjacent to each other in a direction parallel to the in-plane direction of the first electrode and oriented differently from each other are included.
    Type: Application
    Filed: December 6, 2023
    Publication date: March 28, 2024
    Applicant: Japan Display Inc.
    Inventors: Shigesumi ARAKI, Mitsutaka OKITA, Daiichi SUZUKI, Shinichiro OKA
  • Patent number: 11940644
    Abstract: A performance of an apparatus is improved. A display apparatus includes: a light guide panel; a light source unit including a plurality of light emitting diode elements arranged in an X direction at a position facing a side surface of the light guide panel; and a plurality of lenses arranged in the X direction between the light guide panel and the light source unit and adhered to each other while sandwiching an adhesive layer allowing visible light to penetrate therethrough. Each of the plurality of lenses includes a surface facing the light source unit, a surface opposite to this surface, and a side surface (lens side surface) crossing these surfaces and being adhered to the adhesive layer. The adhesive layer is arranged between the sides surfaces facing each other.
    Type: Grant
    Filed: May 10, 2023
    Date of Patent: March 26, 2024
    Assignee: JAPAN DISPLAY INC.
    Inventors: Motoki Tsuda, Kazuki Ichihara, Michikazu Noguchi
  • Patent number: 11943971
    Abstract: In a display device in which an OLED is formed by a separate coating method, improving the accuracy of vapor deposition position and reducing display defects are established. In the array substrate, a display unit that displays an image configured with a plurality of pixels is formed. A first convex portion and a second convex portion are provided on a surface of a boundary region between the pixels of the array substrate. A first organic layer including a layer exhibiting a first emission color is stacked on the pixel electrode of the pixel, and second organic layers including a layer exhibiting a second emission color are stacked on the pixel electrode of the pixels. The first organic layer is provided to cover only the first convex portion. The second organic layers are provided not to cover any one of the first convex portion and the second convex portion.
    Type: Grant
    Filed: May 3, 2021
    Date of Patent: March 26, 2024
    Assignee: Japan Display Inc.
    Inventor: Masamitsu Furuie
  • Patent number: 11940710
    Abstract: According to one embodiment, a light control device includes a first liquid crystal cell including a first liquid crystal layer, a second liquid crystal cell including a second liquid crystal layer, and a polarization conversion element. The first liquid crystal layer and the second liquid crystal layer each includes a first region which scatters a first polarized component and transmits a second polarized component and a second region which transmits the first polarized component and scatters the second polarized component. The polarization conversion element overlaps the first region and the second region, converts the first polarized component into the second polarized component, and converts the second polarized component into the first polarized component.
    Type: Grant
    Filed: April 12, 2023
    Date of Patent: March 26, 2024
    Assignee: JAPAN DISPLAY INC.
    Inventors: Tae Kurokawa, Takeo Koito, Masashi Mitsui
  • Patent number: 11940681
    Abstract: A display device includes a front plate, a display panel disposed on a back surface side of the front plate, a backlight disposed on a back surface side of the display panel, a housing that accommodates the backlight, a support member disposed on the back surface side of the front plate and outside the housing, the support member supporting the front plate, and a clamping member clamping an outer edge of the front plate and an outer edge of the support member.
    Type: Grant
    Filed: June 14, 2022
    Date of Patent: March 26, 2024
    Assignee: Japan Display Inc.
    Inventors: Takuya Nishimoto, Hiroki Sugiyama
  • Patent number: 11942048
    Abstract: A display device includes: a display panel with pixels; a dimming panel with dimming pixels; and a light source. When a pixel is controlled to be lit in white and a predetermined condition is satisfied, a blurring region is formed, and light from the light source is transmitted through the blurring region and the pixel. When a pixel is controlled to be lit up in white and the predetermined condition is not satisfied, the blurring region is not formed, the dimming pixel overlapping the pixel on a straight line along a direction in which the display panel faces the dimming panel is controlled to transmit light, and light from the light source is transmitted through the dimming pixel and the pixel. The predetermined condition is satisfied when the pixel controlled to be lit in white is at a predetermined distance or farther from an outer edge of a display area.
    Type: Grant
    Filed: April 11, 2023
    Date of Patent: March 26, 2024
    Assignee: Japan Display Inc.
    Inventors: Tomoyuki Ishihara, Tomohide Oohira, Yasuhiko Yamagishi
  • Patent number: 11942583
    Abstract: A display device comprising: a first substrate; a plurality of pixels provided to the first substrate; a light emitting element provided to each of the pixels; a phosphor layer covering at least an upper surface of the light emitting element; a first reflective layer facing a side surface of the light emitting element; and a second reflective layer provided to a side surface of the phosphor layer, separated from the first reflective layer in a normal direction of the first substrate, and disposed farther away from the first substrate than the first reflective layer.
    Type: Grant
    Filed: May 11, 2021
    Date of Patent: March 26, 2024
    Assignee: Japan Display Inc.
    Inventors: Osamu Itou, Masanobu Ikeda
  • Patent number: 11941198
    Abstract: A first substrate including a first surface and a second surface on an opposite side of the first surface, the first surface being a detection surface for detecting unevenness of an object coming is contact or close, a second substrate facing the other surface of the first substrate, and a sensor unit provided between the first substrate and the second substrate, and which detects the unevenness of a finger coming in contact with or close to the detection surface.
    Type: Grant
    Filed: June 21, 2022
    Date of Patent: March 26, 2024
    Assignee: Japan Display Inc.
    Inventor: Hayato Kurasawa
  • Patent number: 11943943
    Abstract: A detection device includes a substrate, a plurality of detection electrodes arranged in a detection area of the substrate, an organic semiconductor layer that covers the detection electrodes, and a counter electrode provided above the organic semiconductor layer. The organic semiconductor layer includes at least either of a first p-type semiconductor layer and a first n-type semiconductor layer, and an active layer. The active layer is provided in each overlapping area overlapping a corresponding one of the detection electrodes, and has a structure in which a p-type semiconductor area and an n-type semiconductor area are mixed and coexist. The first p-type semiconductor layer or the first n-type semiconductor layer is provided in a non-overlapping area not overlapping the detection electrode, and is provided between the adjacent active layers.
    Type: Grant
    Filed: August 25, 2021
    Date of Patent: March 26, 2024
    Assignee: Japan Display Inc.
    Inventor: Yasushi Kawata
  • Patent number: 11942484
    Abstract: A semiconductor device includes an insulating substrate, a first semiconductor layer formed of silicon and positioned above the insulating substrate, a second semiconductor layer formed of a metal oxide and positioned above the first semiconductor layer, a first insulating film formed of a silicon nitride and positioned between the first semiconductor layer and the second semiconductor layer, and a block layer positioned between the first semiconductor film and the second semiconductor layer, the block layer hydrogen diffusion of which is lower than that of the first insulating film.
    Type: Grant
    Filed: July 28, 2022
    Date of Patent: March 26, 2024
    Assignee: Japan Display Inc.
    Inventors: Akihiro Hanada, Hajime Watakabe, Kazufumi Watabe
  • Patent number: 11940687
    Abstract: According to one embodiment, a display device includes a first substrate including a light-shielding layer and a conductive line having a first side surface and a second side surface on a side opposite to the first side surface, a second substrate opposed to the first substrate, a polymer dispersed liquid crystal layer held between the first substrate and the second substrate, and including a polymer and liquid crystal molecules, and a light-emitting element opposed to an end portion of at least one of the first substrate and the second substrate, wherein the first side surface is closer to the light-emitting element than the second side surface, and the light-shielding layer covers at least the first side surface of the conductive line.
    Type: Grant
    Filed: March 21, 2023
    Date of Patent: March 26, 2024
    Assignee: Japan Display Inc.
    Inventors: Tae Kurokawa, Kentaro Okuyama
  • Patent number: 11940688
    Abstract: A display device includes a display panel including a pixel and a drive circuit configured to drive the pixel, a light source device configured to emit emitted light toward the display panel, and a color separation element placed between the display panel and the light source device, the color separation element being configured to disperse the emitted light and to emit, to the pixel, a plurality of rays of separated light with wavelengths different from each other. The color separation element includes a separation region configured to emit the separated light and a light-shielding region configured to block the emitted light heading toward the drive circuit.
    Type: Grant
    Filed: October 3, 2023
    Date of Patent: March 26, 2024
    Assignee: Japan Display Inc.
    Inventor: Shuichi Osawa