Patents by Inventor Hayato Kurasawa

Hayato Kurasawa 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: 20240152007
    Abstract: According to one embodiment, a display device comprises image signal lines, scanning signal lines, pixels, a display area, pixel electrodes, and common electrodes. The common electrodes are configured to detect an object and to display an image in the display area. The common electrodes include first and second common electrodes which are arranged in a first direction. A first slit is provided between the first and second common electrodes. The first and second common electrodes are supplied a signal different from each other. A second slit is provided in the first common electrode. Each of the first slit and the second slit overlaps one of the image signal lines and extends in an extension direction in which the image signal line extends.
    Type: Application
    Filed: January 11, 2024
    Publication date: May 9, 2024
    Applicant: JAPAN DISPLAY INC.
    Inventors: Kenta SEKI, Gen KOIDE, Hayato KURASAWA
  • Publication number: 20240143107
    Abstract: A display device with a touch sensor having a display function and a touch sensor function is provided. The display device includes a first substrate including a pixel electrode; a first electrode along a first direction; and a second substrate including a second electrode that includes patterns of electrodes along a second direction crossing the first direction and that faces the first electrode and the pixel electrode, wherein upon the display function being activated, the pixel electrode is supplied with a pixel signal, and the second electrode is supplied with common voltage, and upon the touch sensor function being activated, the first electrode is applied with a first signal and the second electrode is configured to receive the first signal to be a second signal as a touch detecting signal.
    Type: Application
    Filed: December 8, 2023
    Publication date: May 2, 2024
    Inventors: Naosuke FURUTANI, Hayato KURASAWA, Makoto HAYASHI
  • 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
  • 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
  • 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: 20240061294
    Abstract: A liquid crystal includes first and second substrates, the first substrate including intersecting data lines and scan lines. A liquid crystal layer is sandwiched therebetween. Also, a plurality of sub-pixels districted by data lines and gate lines, and arranged along the long-axis and the short-axis directions in a matrix. A pixel electrode in the sub-pixels includes a central portion. A common electrode including linear electrodes arranged along the data lines and disposed with gaps therebetween. Sub-pixels are bent at the center portion, such that the linear electrodes or the gaps in both sides of the sub-pixels are inclined in opposite directions with respect to the long-axis direction. At least one of the linear electrodes or at least one of the gaps has a bent portion at the central portion of the respective pixel electrode. The common electrode is provided on liquid crystal layer side over the pixel electrode.
    Type: Application
    Filed: November 1, 2023
    Publication date: February 22, 2024
    Inventors: Takao Atarashiya, Hayato Kurasawa
  • Patent number: 11906855
    Abstract: According to one embodiment, a display device comprises image signal lines, scanning signal lines, pixels, a display area, pixel electrodes, and common electrodes. The common electrodes are configured to detect an object and to display an image in the display area. The common electrodes include first and second common electrodes which are arranged in a first direction. A first slit is provided between the first and second common electrodes. The first and second common electrodes are supplied a signal different from each other. A second slit is provided in the first common electrode. Each of the first slit and the second slit overlaps one of the image signal lines and extends in an extension direction in which the image signal line extends.
    Type: Grant
    Filed: December 7, 2022
    Date of Patent: February 20, 2024
    Assignee: Japan Display Inc.
    Inventors: Kenta Seki, Gen Koide, Hayato Kurasawa
  • Patent number: 11880531
    Abstract: A display device with a touch sensor having a display function and a touch sensor function is provided. The display device includes a first substrate including a pixel electrode; a first electrode along a first direction; and a second substrate including a second electrode that includes patterns of electrodes along a second direction crossing the first direction and that faces the first electrode and the pixel electrode, wherein upon the display function being activated, the pixel electrode is supplied with a pixel signal, and the second electrode is supplied with common voltage, and upon the touch sensor function being activated, the first electrode is applied with a first signal and the second electrode is configured to receive the first signal to be a second signal as a touch detecting signal.
    Type: Grant
    Filed: February 14, 2023
    Date of Patent: January 23, 2024
    Assignee: Japan Display Inc.
    Inventors: Naosuke Furutani, Hayato Kurasawa, Makoto Hayashi
  • 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
  • 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: 11835827
    Abstract: A liquid crystal includes first and second substrates, the first substrate including intersecting data lines and scan lines. A liquid crystal layer is sandwiched therebetween. Also, a plurality of sub-pixels districted by data lines and gate lines, and arranged along the long-axis and the short-axis directions in a matrix. A pixel electrode in the sub-pixels includes a central portion. A common electrode including linear electrodes arranged along the data lines and disposed with gaps therebetween. Sub-pixels are bent at the center portion, such that the linear electrodes or the gaps in both sides of the sub-pixels are inclined in opposite directions with respect to the long-axis direction. At least one of the linear electrodes or at least one of the gaps has a bent portion at the central portion of the respective pixel electrode. The common electrode is provided on liquid crystal layer side over the pixel electrode.
    Type: Grant
    Filed: August 27, 2021
    Date of Patent: December 5, 2023
    Assignee: Japan Display Inc.
    Inventors: Takao Atarashiya, Hayato Kurasawa
  • Patent number: 11837012
    Abstract: A fingerprint sensor is provided and includes substrate; sensor electrodes arranged on substrate; first switches coupled to sensor electrodes; organic layer covering sensor electrodes; control line drive circuit in a first direction; signal line drive circuit in a second direction orthogonal to the first direction; signal lines coupled to the first switches; control lines coupling first switches to control line drive circuit; sensor drive electrode surrounding sensor electrodes; second switches between signal line drive circuit and signal lines; first number of third switches between signal line drive circuit and first number of second switches, wherein surface of organic layer is lower than sensor drive electrode, and wherein first number is less than number of all second switches.
    Type: Grant
    Filed: January 18, 2023
    Date of Patent: December 5, 2023
    Assignee: Japan Display Inc.
    Inventors: Fumihito Shibano, Hiroshi Mizuhashi, Toshinori Uehara, Kimiyo Nonoyama, Hayato Kurasawa
  • 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: 20230341719
    Abstract: A display device includes: a plurality of first electrodes arranged in a display region for displaying an image; a second electrode opposed to the first electrodes; a plurality of switching elements that are arranged in the display region and coupled to the first electrodes or the second electrode; a gate line for supplying a scanning signal for scanning the switching elements; a data line for supplying a signal to the switching elements that are coupled to the switching elements; and conductive wire that is opposed to the second electrode via an insulating layer and is coupled to the switching elements.
    Type: Application
    Filed: June 20, 2023
    Publication date: October 26, 2023
    Inventors: 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
  • Patent number: 11776295
    Abstract: A detection device is provided and includes substrate; drive electrode provided on substrate; detection electrode provided on substrate and capacitively coupling with drive electrode; first thin film transistor connected to drive electrode and second thin film transistor connected to first thin film transistor, first insulating film and second insulating film both stacked on substrate, wherein first thin film transistor comprises first gate electrode and first semiconductor layer, second thin film transistor comprises second gate electrode and second semiconductor layer, first semiconductor layer and second semiconductor layer are in same layer and are located between first insulating film and second insulating film, first gate electrode opposes first semiconductor layer via first insulating film, second gate electrode opposes second semiconductor layer via second insulating film, and distance from first gate electrode to first semiconductor layer is greater than distance from second gate electrode to second
    Type: Grant
    Filed: September 1, 2021
    Date of Patent: October 3, 2023
    Assignee: Japan Display Inc.
    Inventors: Yoshitaka Ozeki, Hayato Kurasawa, Toshinori Uehara, Koshiro Moriguchi
  • 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