Patents by Inventor Koji Ishizaki

Koji Ishizaki 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).

  • 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
  • Publication number: 20240118778
    Abstract: There are provided a display panel with a touch detector that allows the touch detection electrodes to be less visible, a touch panel, and an electronic unit having the display panel with a touch detector. The display panel with a touch detector includes: a display layer including a plurality of display elements arranged side by side; and an electrode layer alternately segmented into first regions and second regions along a first direction, the electrode layer including a plurality of first slits arranged side by side to extend in a second direction, and a plurality of second slits each allowing an adjacent pair of the plurality of first slits in the second regions to be in communication with one another.
    Type: Application
    Filed: December 20, 2023
    Publication date: April 11, 2024
    Inventors: Koji ISHIZAKI, Koji NOGUCHI, Masanobu IKEDA, Yasuyuki MATSUI
  • Publication number: 20240086001
    Abstract: According to an aspect, a display device with a touch detection function includes: a substrate; a drive electrode that extends in a first direction; and a plurality of touch detection electrodes that are metal wirings extending in a second direction different from the first direction. The metal wirings are arranged with a predetermined pitch so as to make capacitive coupling with the drive electrode.
    Type: Application
    Filed: November 21, 2023
    Publication date: March 14, 2024
    Inventors: Koji ISHIZAKI, Hayato KURASAWA, Kohei AZUMI
  • Publication number: 20240086018
    Abstract: According to one embodiment, an electrostatic capacitance-type sensor-equipped display device includes a display panel with a display surface which displays an image. The sensor includes a plurality of detection electrodes disposed in a matrix, the detection electrodes being mutually electrically independently provided above the display surface and being configured to detect a variation in electrostatic capacitance, and a plurality of lead lines provided above the display surface, connected to the detection electrodes in a one-to-one correspondence, and formed of a metal.
    Type: Application
    Filed: November 14, 2023
    Publication date: March 14, 2024
    Inventors: Koji NOGUCHI, Koji ISHIZAKI, Hayato KURASAWA
  • Publication number: 20240069681
    Abstract: A touch panel, a display panel, and a display unit achieving prevention of erroneous detection caused by external noise. The touch panel includes: a plurality of detection scan electrodes extending in a first direction and a plurality of detection electrodes facing the plurality of detection scan electrodes and extending in a second direction which intersects the first direction. The one or more selected detection scan electrodes are selected, in a desired unit, from the plurality of detection scan electrodes, to be supplied with a selection pulse, and each of the first and the second detection electrodes is selected from the plurality of detection electrodes.
    Type: Application
    Filed: November 2, 2023
    Publication date: February 29, 2024
    Applicant: Japan Display Inc.
    Inventors: Takayuki Nakanishi, Koji Noguchi, Koji Ishizaki, Yasuyuki Teranishi, Takeya Takeuchi
  • Patent number: 11914808
    Abstract: A display device with a touch detection device is provided and includes display elements that are surrounded by scan lines each extending in first direction and signal lines each extending in second direction crossing first direction; touch detection electrodes opposed to display elements; metal wires disposed on each of touch detection electrodes and extending along signal lines, wherein metal wires being overlapped with corresponding one of signal lines, wherein metal wires are disposed without crossing each other and spaced from each other.
    Type: Grant
    Filed: May 4, 2022
    Date of Patent: February 27, 2024
    Assignee: Japan Display Inc.
    Inventors: Koji Ishizaki, Hayato Kurasawa, Kohei Azumi
  • Publication number: 20240061522
    Abstract: A display device is provided and includes a first substrate comprising first and second areas, first and second terminals located in the first area, and first wiring electrically connects the first terminal with the second terminal; a second substrate comprising a detection electrode for sensing and a third terminal electrically connected to the detection electrode; and connecting member comprising a base layer, and a conductive member electrically connects first and third terminals, wherein the first area is an area in which the second substrate does not overlap the first substrate, the second area is an area in which the first substrate and the second substrate overlap each other, the connecting member does not extend outside first substrate, the conductive member is provided on an undersurface of the base layer, and the undersurface is opposed to the first surface and the third surface.
    Type: Application
    Filed: November 1, 2023
    Publication date: February 22, 2024
    Inventors: Koji NOGUCHI, Masaki MURASE, Yasushi NAKANO, Koji ISHIZAKI
  • Patent number: 11906870
    Abstract: According to one embodiment, a display device includes a first conductive layer, a second conductive layer overlapping the first conductive layer, a first capacitive portion located in a same layer as the first conductive layer, a second capacitive portion located in a same layer as the second conductive layer and overlapping the first capacitive portion, a first inorganic insulating film located between the first conductive layer and the second conductive layer and between the first capacitive portion and the second capacitive portion, a drain electrode electrically connected to the second capacitive portion, a pixel electrode electrically connected to the drain electrode.
    Type: Grant
    Filed: October 15, 2020
    Date of Patent: February 20, 2024
    Assignee: Japan Display Inc.
    Inventors: Koji Ishizaki, Yoshitaka Ozeki, Takahiro Takeuchi, Koshiro Moriguchi, Tomoyasu Hirano
  • Patent number: 11893193
    Abstract: There are provided a display panel with a touch detector that allows the touch detection electrodes to be less visible, a touch panel, and an electronic unit having the display panel with a touch detector. The display panel with a touch detector includes: a display layer including a plurality of display elements arranged side by side; and an electrode layer alternately segmented into first regions and second regions along a first direction, the electrode layer including a plurality of first slits arranged side by side to extend in a second direction, and a plurality of second slits each allowing an adjacent pair of the plurality of first slits in the second regions to be in communication with one another.
    Type: Grant
    Filed: July 1, 2022
    Date of Patent: February 6, 2024
    Assignee: Japan Display Inc.
    Inventors: Koji Ishizaki, Koji Noguchi, Masanobu Ikeda, Yasuyuki Matsui
  • Publication number: 20240040707
    Abstract: A detection device is provided including first substrate including first region, second region and third region arranged in first direction, second region arranged between first and third regions; first detection electrode arranged on first substrate; second detection electrode arranged on first substrate and being adjacent to first detection electrode; first electrode coupled to first detection electrode and continuously formed from first to third regions; second electrode coupled to second detection electrode, and continuously formed from first to third regions, convex portions located between first electrode and second electrode in second region and spaced away from first and second electrodes; and protective layer formed on first and second electrodes in first region and not formed on first electrode and second electrode in third region, wherein at least one of convex portions is covered with protective layer, and at least another one of convex portions is not covered with protective layer.
    Type: Application
    Filed: October 11, 2023
    Publication date: February 1, 2024
    Inventors: Koji ISHIZAKI, Daisuke SONODA, Toshimasa ISHIGAKI
  • Patent number: 11868570
    Abstract: According to one embodiment, an electrostatic capacitance-type sensor-equipped display device includes a display panel with a display surface which displays an image. The sensor includes a plurality of detection electrodes disposed in a matrix, the detection electrodes being mutually electrically independently provided above the display surface and being configured to detect a variation in electrostatic capacitance, and a plurality of lead lines provided above the display surface, connected to the detection electrodes in a one-to-one correspondence, and formed of a metal.
    Type: Grant
    Filed: December 22, 2022
    Date of Patent: January 9, 2024
    Assignee: Japan Display Inc.
    Inventors: Koji Noguchi, Koji Ishizaki, Hayato Kurasawa
  • Patent number: 11847287
    Abstract: A touch panel, a display panel, and a display unit achieving prevention of erroneous detection caused by external noise. The touch panel includes: a plurality of detection scan electrodes extending in a first direction and a plurality of detection electrodes facing the plurality of detection scan electrodes and extending in a second direction which intersects the first direction. The one or more selected detection scan electrodes are selected, in a desired unit, from the plurality of detection scan electrodes, to be supplied with a selection pulse, and each of the first and the second detection electrodes is selected from the plurality of detection electrodes.
    Type: Grant
    Filed: February 24, 2023
    Date of Patent: December 19, 2023
    Assignee: JAPAN DISPLAY INC.
    Inventors: Takayuki Nakanishi, Koji Noguchi, Koji Ishizaki, Yasuyuki Teranishi, Takeya Takeuchi
  • Patent number: 11842001
    Abstract: A display device is provided and includes a first substrate comprising first and second areas, first and second terminals located in the first area, and first wiring electrically connects the first terminal with the second terminal; a second substrate comprising a detection electrode for sensing and a third terminal electrically connected to the detection electrode; and connecting member comprising a base layer, and a conductive member electrically connects first and third terminals, wherein the first area is an area in which the second substrate does not overlap the first substrate, the second area is an area in which the first substrate and the second substrate overlap each other, the connecting member does not extend outside first substrate, the conductive member is provided on an undersurface of the base layer, and the undersurface is opposed to the first surface and the third surface.
    Type: Grant
    Filed: February 8, 2022
    Date of Patent: December 12, 2023
    Assignee: Japan Display Inc.
    Inventors: Koji Noguchi, Masaki Murase, Yasushi Nakano, Koji Ishizaki
  • Publication number: 20230393697
    Abstract: A display device is provided and includes display part having first and second electrodes; and input part having substrate and detection electrode between substrate and display part, wherein display part including display area that displays image, input part including conductive layer provided between substrate and display part and overlapping detection electrode in display area, detection electrode is glued to conductive layer which has first region outside display area, first regain overlapping substrate and not overlapping detection electrode.
    Type: Application
    Filed: August 22, 2023
    Publication date: December 7, 2023
    Inventors: Hayato KURASAWA, Kohei AZUMI, Koji ISHIZAKI, Hideki KANEKO, Tsutomu HARADA
  • Patent number: 11818848
    Abstract: A detection device is provided including first substrate including first region, second region and third region arranged in first direction, second region arranged between first and third regions; first detection electrode arranged on first substrate; second detection electrode arranged on first substrate and being adjacent to first detection electrode; first electrode coupled to first detection electrode and continuously formed from first to third regions; second electrode coupled to second detection electrode, and continuously formed from first to third regions, convex portions located between first electrode and second electrode in second region and spaced away from first and second electrodes; and protective layer formed on first and second electrodes in first region and not formed on first electrode and second electrode in third region, wherein at least one of convex portions is covered with protective layer, and at least another one of convex portions is not covered with protective layer.
    Type: Grant
    Filed: May 6, 2022
    Date of Patent: November 14, 2023
    Assignee: Japan Display Inc.
    Inventors: Koji Ishizaki, Daisuke Sonoda, Toshimasa Ishigaki
  • Publication number: 20230350528
    Abstract: An input device is provided and includes substrate; first metal mesh shape electrodes provided on layer of substrate; second metal mesh shape electrodes provided on same layer of the substrate as first metal mesh shape electrodes; second metal connection electrodes each of which connects adjacent two of second metal mesh shape electrodes on same layer as first metal mesh shape electrodes; insulating film covering second metal connection electrodes; first transparent connection electrodes each of which connects adjacent two of first metal mesh shape electrodes on insulating film; and protective film covering first metal mesh shape electrodes, second metal mesh shape electrodes, and first transparent connection electrodes.
    Type: Application
    Filed: July 11, 2023
    Publication date: November 2, 2023
    Inventors: Koji ISHIZAKI, Hayato KURASAWA, Hiroshi MIZUHASHI
  • Patent number: 11803282
    Abstract: An input device is provided and includes substrate; first metal mesh shape electrodes provided on layer of substrate; second metal mesh shape electrodes provided on same layer of the substrate as first metal mesh shape electrodes; second metal connection electrodes each of which connects adjacent two of second metal mesh shape electrodes on same layer as first metal mesh shape electrodes; insulating film covering second metal connection electrodes; first transparent connection electrodes each of which connects adjacent two of first metal mesh shape electrodes on insulating film; and protective film covering first metal mesh shape electrodes, second metal mesh shape electrodes, and first transparent connection electrodes.
    Type: Grant
    Filed: June 29, 2022
    Date of Patent: October 31, 2023
    Assignee: Japan Display Inc.
    Inventors: Koji Ishizaki, Hayato Kurasawa, Hiroshi Mizuhashi
  • Publication number: 20230333682
    Abstract: A sensor-equipped display device is provided and includes a display panel and a detection electrode. The panel includes a display area in which pixels are arranged with a first pixel pitch in a first direction and a second pixel pitch in a second direction. The electrode includes an pattern having line fragments. The pattern has connection points at which ends of the fragments are connected to each other, and at least part of the connection points is arranged linearly such that an arrangement gaps thereof in the first and second direction is set to a first and second connection point pitch.
    Type: Application
    Filed: June 26, 2023
    Publication date: October 19, 2023
    Inventors: Hayato KURASAWA, Koji ISHIZAKI
  • Publication number: 20230315230
    Abstract: According to an aspect, a display device with a touch detecting function includes: a display area in which pixels each composed of a plurality of color areas are arranged in a matrix; a touch detection electrode including a first conductive thin wire extending in a first direction; and a dummy electrode including a plurality of second conductive thin wires; a drive electrode having capacitance for the touch detection electrode. Each of the second conductive thin wires includes a plurality of thin wire pieces extending in a direction different from the first direction and is divided by a slit between the thin wire pieces. A color area in the display area with which the slit overlaps has a different color from a color area in the display area with which a slit closest to the slit in a second direction orthogonal to the first direction overlaps.
    Type: Application
    Filed: June 8, 2023
    Publication date: October 5, 2023
    Inventors: Koji ISHIZAKI, Hayato KURASAWA, Takeo KOITO
  • Publication number: 20230280854
    Abstract: A sensor device is provided and includes electrodes each including first parts arranged in a first direction and a second part connected to the first parts, the first parts each having a first mesh shape which is formed of first metal wires, and the second part having a second mesh shape which is formed of second metal wires, wherein a longitudinal direction of the second part is the first direction, and at least one of the first mash shape and the second mash shape has an intersection portion at which two of the first metal wires or two of the second metal wires intersect.
    Type: Application
    Filed: May 10, 2023
    Publication date: September 7, 2023
    Inventors: Hayato KURASAWA, Toshihiko TANAKA, Naoki TAKADA, Chihiro TANAKA, Koji ISHIZAKI