Patents Assigned to Japan Display Inc.
  • Display device
    Patent number: 11966115
    Abstract: Used is a display device including: a first substrate having a first front surface and a first back surface located on an opposite side of the first front surface; a second substrate having a second back surface opposing the first front surface and a second front surface located on an opposite side of the second back surface; a liquid crystal layer arranged between the first front surface of the first substrate and the second back surface of the second substrate; a first light guide plate adhesively fixed onto the second front surface of the second substrate via a first adhesive layer; and a light source unit arranged at a position opposing a first side surface of the first light guide plate, in which refractive index of the first light guide plate is lower than refractive index of the first adhesive layer.
    Type: Grant
    Filed: October 19, 2023
    Date of Patent: April 23, 2024
    Assignee: Japan Display Inc.
    Inventors: Yoshinori Tanaka, Keita Ono, Keiji Tago
  • Display panel with touch detection function, drive circuit, and electronic unit
    Patent number: 11966527
    Abstract: There are provided a display panel with a touch detection function, a drive circuit, and an electronic unit, which make it possible to realize many functions related to touch detection. The display panel includes: one or more display elements; one or more drive electrodes extending in one direction; an electrode drive section integrated into a chip, and applying a drive signal to the drive electrodes; and one or more touch detection electrodes extending in a direction intersecting the direction in which the drive electrodes extend.
    Type: Grant
    Filed: February 20, 2023
    Date of Patent: April 23, 2024
    Assignee: Japan Display Inc.
    Inventors: Yoshitoshi Kida, Koji Noguchi, Hiroshi Mizuhashi, Kohei Azumi
  • Electronic device and display device
    Patent number: 11967293
    Abstract: According to one embodiment, an electronic device includes scanning, signal, pixels, and an inspection circuit disposed in a non-display area and including first switch elements connected to the scanning lines, the first switch elements are oxide semiconductor transistors including an oxide semiconductor layer, and each of the first switch elements of the inspection circuit includes at least two transistors connected in series to one of the scanning lines.
    Type: Grant
    Filed: November 30, 2022
    Date of Patent: April 23, 2024
    Assignee: Japan Display Inc.
    Inventor: Hirotaka Hayashi
  • DISPLAY DEVICE
    Publication number: 20240130165
    Abstract: According to one embodiment, a display device includes a plurality of display elements and a partition which surrounds each of the plurality of display elements. The display elements each include a lower electrode, an upper electrode opposing the lower electrode and an organic layer disposed between the lower electrode and the upper electrode. The partition includes a conductive lower portion and an upper portion protruding from a side surface of the lower portion. Further, the partition includes an aperture through which the lower portion and the upper portion penetrate.
    Type: Application
    Filed: October 10, 2023
    Publication date: April 18, 2024
    Applicant: Japan Display Inc.
    Inventors: Hidekazu MIYAKE, Naoki TOKUDA
  • MEASURING METHOD AND MEASURING DEVICE
    Publication number: 20240127419
    Abstract: According to one embodiment, a measuring method includes forming a partition including a lower portion arranged on a first surface side of a base and an upper portion protruding from a side surface of the lower portion, acquiring a first image including the partition, which is generated by emitting electromagnetic waves from the first surface side of the base or a second surface side opposed to the first surface of the base, analyzing the acquired first image, and measuring an amount of protrusion at which the end portion of the upper portion protrudes from the side surface of the lower portion, based on the analysis result.
    Type: Application
    Filed: October 11, 2023
    Publication date: April 18, 2024
    Applicant: Japan Display Inc.
    Inventors: Satoru TOMITA, Kazuyuki ENDOU, Kota MAKISHI
  • SENSOR DEVICE AND SENSING METHOD
    Publication number: 20240125647
    Abstract: According to one embodiment, a sensor device comprises a sensor configured to output a sense signal, a value the sense signal changing over time based on incident light, a first reset circuit configured to set the value of the sense signal to a reset value when the value of the sense signal exceeds a threshold, a counter configured to count a first number of times of reset by the first reset circuit, and an arithmetic operation circuit configured to calculate an amount of incident light of a certain period based on the value of the sense signal, the reset value, and the first number of times of reset.
    Type: Application
    Filed: October 18, 2022
    Publication date: April 18, 2024
    Applicant: Japan Display Inc.
    Inventors: Naoki TAKADA, Xingle WANG, Chung-Kai CHEN
  • TRANSISTOR
    Publication number: 20240128259
    Abstract: A diode having a simple structure and a simple manufacturing method of the diode are provided. A diode including: a semiconductor layer having a first region and a second region having a resistance lower than a resistance of the first region; a first insulating layer having a first aperture portion and a second aperture portion and covering the semiconductor layer other than the first aperture and the second aperture, the first aperture portion exposing the semiconductor layer in the first region, the second aperture portion exposing the semiconductor layer in the second region; a first conductive layer connected to the semiconductor layer in the first aperture portion and overlapping with the semiconductor layer in the first region via the first insulating layer in a planar view; and a second conductive layer connected to the semiconductor layer in the second aperture.
    Type: Application
    Filed: December 12, 2023
    Publication date: April 18, 2024
    Applicant: Japan Display Inc.
    Inventor: Toshinari SASAKI
  • DISPLAY DEVICE AND MANUFACTURING METHOD THEREOF
    Publication number: 20240130167
    Abstract: According to an embodiment, a display device includes a lower electrode, a rib including a pixel aperture which overlaps the lower electrode, a partition which includes a lower portion provided on the rib, a first layer provided on the lower portion and protruding from a side surface of the lower portion, and a second layer provided on the first layer and having a width less than a width of the first layer, an organic layer which covers the lower electrode through the pixel aperture and emits light based on application of voltage, and an upper electrode which covers the organic layer and is in contact with the side surface of the lower portion.
    Type: Application
    Filed: October 16, 2023
    Publication date: April 18, 2024
    Applicant: Japan Display Inc.
    Inventor: Arichika ISHIDA
  • DISPLAY DEVICE
    Publication number: 20240130213
    Abstract: According to one embodiment, a method of manufacturing a display device, includes forming a plurality of display elements each including a lower electrode, an organic layer which covers the lower electrode and an upper electrode which covers the organic layer, forming a first sealing layer which seals the plurality of display elements, individually, inspecting the plurality of display elements to determine whether any of the plurality of display elements entails a defect and forming, when in the inspection, it is confirmed that there is a defective one of the display elements, a repair hole which penetrates the first sealing layer which seals the defective one of the display elements.
    Type: Application
    Filed: October 12, 2023
    Publication date: April 18, 2024
    Applicant: Japan Display Inc.
    Inventor: Arichika ISHIDA
  • DISPLAY DEVICE
    Publication number: 20240126115
    Abstract: According to one embodiment, an optical control element includes a plurality of lens forming regions along a first direction and a second direction orthogonal to the first direction, each of the lens forming regions includes an annularly shaped second electrode and a circularly shaped first electrode provided on an inner side of the second electrode, a plurality of first wiring lines connected to the first electrodes each include a first stem portion extending in a zigzag shape along the second direction and a plurality of first branch portions extending from the first stem, and each of the first branch portions overlap the plurality of first electrodes, respectively.
    Type: Application
    Filed: October 5, 2023
    Publication date: April 18, 2024
    Applicant: Japan Display Inc.
    Inventors: Shunichi KIMURA, Toshiharu MATSUSHIMA, Jin HIROSAWA, Yuji MAEDE
  • INTELLIGENT REFLECTING SURFACE
    Publication number: 20240128652
    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 radar absorbent material. The first substrate includes a first basement located in a first area and a second area, and a plurality of patch electrodes. The second substrate includes a second basement and a common electrode. The radar absorbent material is located in the second area.
    Type: Application
    Filed: December 7, 2023
    Publication date: April 18, 2024
    Applicant: Japan Display Inc.
    Inventors: Mitsutaka OKITA, Shinichiro OKA, Shigesumi ARAKI, Daiichi SUZUKI
  • DISPLAY DEVICE AND MANUFACTURING METHOD OF THE SAME
    Publication number: 20240130196
    Abstract: According to one embodiment, a display device includes a base electrode, a rib including an aperture overlapping the base electrode, a lower electrode disposed at the aperture and electrically connected to the base electrode, a partition including a lower part disposed on the rib and an upper part projecting from a side surface of the lower part, a organic layer covering the lower electrode, and a upper electrode disposed on the organic layer. A periphery of the base electrode is covered by the rib. The base electrode is formed of a first metal material. A periphery of the lower electrode is located on the rib. The lower electrode is formed of a second metal material different from the first metal material.
    Type: Application
    Filed: October 6, 2023
    Publication date: April 18, 2024
    Applicant: Japan Display Inc.
    Inventor: Kaichi FUKUDA
  • DETECTION DEVICE
    Publication number: 20240126391
    Abstract: A detection device includes a substrate having a detection region, a coupling region, and a wiring region between the detection region and the coupling region, a plurality of detection elements disposed in the detection region of the substrate, a plurality of terminals disposed in the coupling region of the substrate and electrically coupled to the detection elements, a plurality of coupling wires adjacently disposed with a gap interposed therebetween in the wiring region of the substrate and electrically coupling the detection elements to the terminals, an insulating layer provided to the wiring region of the substrate and covering the coupling wires, and a plurality of through holes formed in the wiring region of the substrate and passing through the substrate and the insulating layer in a thickness direction between the coupling wires.
    Type: Application
    Filed: October 13, 2023
    Publication date: April 18, 2024
    Applicant: Japan Display Inc.
    Inventors: Hiroumi KINJO, Masatomo HISHINUMA
  • Detection device and display device
    Patent number: 11961323
    Abstract: A detection device includes a plurality of detection elements arranged in a matrix having a row-column configuration in a detection area, a plurality of scan lines each coupled to the detection elements arranged in a first direction, a drive circuit configured to drive the scan lines, a plurality of output signal lines each coupled to the detection elements arranged in a second direction different from the first direction, and a detection circuit configured to be supplied with detection signals from the detection elements through the output signal lines.
    Type: Grant
    Filed: August 4, 2022
    Date of Patent: April 16, 2024
    Assignee: Japan Display Inc.
    Inventor: Tadayoshi Katsuta
  • Sensor device with timing control circuit outputting inverted polarity signal to the floating ground and sensing electrodes
    Patent number: 11960677
    Abstract: According to one embodiment, a sensor device includes a panel and a control circuit. The panel includes an insulating layer, a first electrode, and a second electrode. The control circuit including a first circuit including a timing control circuit and a first amplifier, and a second circuit including a detection circuit connected to a floating ground line. During a first sensing drive period, the first output unit outputs a first synchronization signal, the timing control circuit outputs a second synchronization signal, the first amplifier provides the amplified second synchronization signal to each of the floating ground line and the first electrode, and the detector reads a change in a sensor signal.
    Type: Grant
    Filed: May 26, 2022
    Date of Patent: April 16, 2024
    Assignee: Japan Display Inc.
    Inventors: Naoki Takada, Hiroshi Yamaguchi, Kisho Yamamoto
  • Display device and method of manufacturing same
    Patent number: 11960673
    Abstract: A display device including a substrate, a plurality of pixel electrodes arranged in a form of a matrix in a plane parallel with the substrate, a display functional layer exerting an image display function on a basis of an image signal supplied to the plurality of pixel electrodes, a driving electrode opposed to the plurality of pixel electrodes, and a plurality of detecting electrodes arranged in a form of a plane opposed to the driving electrode, separated and arranged at a pitch of a natural number multiple of an arrangement pitch of the pixel electrodes in one direction in the arrangement plane, and each capacitively coupled with the driving electrode.
    Type: Grant
    Filed: February 6, 2023
    Date of Patent: April 16, 2024
    Assignee: Japan Display Inc.
    Inventors: Koji Ishizaki, Kouji Noguchi
  • Display device
    Patent number: 11963411
    Abstract: A display includes a plurality of first wirings which are provided on a first layer and each of which is arranged parallel to a first direction in a first area, and which are arranged on a second layer in a second area; a second wiring which is provided in the first layer in the first area and which is provided on a layer in the second area; and a third wiring which is provided on the first layer and arranged between the first wirings in the first area and which is arranged to intersect with first wirings in the second area. The first wirings is arranged to be inclined to the same side in the first direction in the second area. The second wiring is arranged to intersect with a portion of the plurality of first wirings in a plan view, in the second area.
    Type: Grant
    Filed: June 16, 2022
    Date of Patent: April 16, 2024
    Assignee: JAPAN DISPLAY INC.
    Inventors: Masumi Nishimura, Hiroshi Tabatake, Akihito Sato
  • Display device including an adhesive bonded polarization plate
    Patent number: 11963380
    Abstract: A display device includes: multiple layers including a display element layer, the multiple layers including a sealing layer for covering the display element layer; and a polarization plate attached to a first layer and a second layer of the multiple layers with an adhesive layer. The multiple layers includes inorganic films and organic films. All of the inorganic films are disposed to avoid an edge area that is at least a part of a peripheral portion of the resin substrate. The polarization plate has an edge above the edge area of the resin substrate. The first layer is disposed to avoid the edge area of the resin substrate. The first layer at an edge has an upper surface sloping downward toward the edge area. The second layer has a portion in the edge area of the resin substrate and between the resin substrate and the adhesive layer.
    Type: Grant
    Filed: August 16, 2022
    Date of Patent: April 16, 2024
    Assignee: JAPAN DISPLAY INC.
    Inventor: Kazuhiro Odaka
  • Display device
    Patent number: 11960177
    Abstract: According to one embodiment, a display device includes a first insulating layer, a first source line and a second source line, an organic insulating layer including a contact hole, a drain electrode located on the first insulating layer and exposed from the organic insulating layer in the contact hole, a conductive material covering the drain electrode in the contact hole, a second insulating layer located on the organic insulating layer, and a pixel electrode located above the second insulating layer and in the contact hole, and electrically connected to the drain electrode, the conductive material being in contact with the first insulating layer exposed from the organic insulating layer in the contact hole.
    Type: Grant
    Filed: January 29, 2021
    Date of Patent: April 16, 2024
    Assignee: Japan Display Inc.
    Inventor: Makoto Uchida
  • Electro-optical device
    Patent number: 11961491
    Abstract: An electro-optical device is provided and includes a plurality of first signal lines extending in a first direction on a substrate; a plurality of second signal lines extending in a second direction on the substrate, the second direction intersecting the first direction; a pixel area in which a plurality of pixel electrodes are disposed; an outer peripheral edge of the pixel area having a curved portion or a bent portion; and a first circuit block, a second circuit block, and a third circuit block arranged along the outer peripheral edge, wherein the second circuit block is arranged between the first circuit block and the first circuit block, and a first gap between the first circuit bock and the second circuit block is different from a second gap between the second circuit block and the third circuit block.
    Type: Grant
    Filed: June 1, 2023
    Date of Patent: April 16, 2024
    Assignee: Japan Display Inc.
    Inventors: Katsuya Anzai, Hideki Kawada, Hiroshi Matsuda, Yukitada Iwasaki