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).

  • Publication number: 20200210013
    Abstract: A detection device is provided and includes a detection electrode including first wire pieces, the detection electrode including a first wire and a second wire; and second wire pieces between the first wire and the second wire, wherein the first wire includes a first bent portion, the second wire includes a second bent portion, the first and second bent portions are formed by two of the first wire pieces including first and second edges, an angle of the first bent portion is different from an angle of the second bent portion, the first edge of the first bent portion is connected to the first edge of the second bent portion by a connecting portion, the second edge of the first bent portion is not in contact with the second edge of the second bent portion, and each of the second wire pieces is not connected to the first wire, the second wire, and the connecting portion.
    Type: Application
    Filed: March 6, 2020
    Publication date: July 2, 2020
    Inventors: Takeo KOITO, Koji ISHIZAKI, Hayato KURASAWA
  • Patent number: 10698511
    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: August 22, 2018
    Date of Patent: June 30, 2020
    Assignee: Japan Display Inc.
    Inventors: Koji Ishizaki, Koji Noguchi, Masanobu Ikeda, Yasuyuki Matsui
  • Patent number: 10698512
    Abstract: An electrode substrate includes a sensing electrode formed on a glass substrate, a concave/convex pattern formed on the glass substrate, and a protective film formed so as to cover the sensing electrode. The concave/convex pattern is disposed closer to an outer periphery of the glass substrate than the sensing electrode is when seen in a plan view. The protective film is formed so as to cover a part of the glass substrate positioned between the sensing electrode and the concave/convex pattern when seen in a plan view.
    Type: Grant
    Filed: March 3, 2015
    Date of Patent: June 30, 2020
    Assignee: Japan Display Inc.
    Inventors: Koji Ishizaki, Toshimasa Ishigaki, Daisuke Sonoda
  • Patent number: 10692448
    Abstract: A display unit with touch detection function includes a plurality of pixel signal lines each transmitting a pixel signal for display; a pixel signal line drive section applying the pixel signal to each of the pixel signal lines; display elements each performing display based on the pixel signal; touch detection electrodes each outputting a detection signal based on a change in capacitance occurring due to an external proximity object; and a touch detection section detecting, in a touch detection period, a touch event based on the detection signal, the touch detection period being different from a display period for the display elements to perform display operation. The pixel signal line drive section maintains a voltage of each of the pixel signal lines at a certain level during the touch detection period.
    Type: Grant
    Filed: June 15, 2015
    Date of Patent: June 23, 2020
    Assignee: Japan Display Inc.
    Inventors: Yoshitoshi Kida, Kohei Azumi, Koji Noguchi, Koji Ishizaki
  • Patent number: 10678362
    Abstract: According to an aspect, a display device with a touch detection function includes: a touch detection electrode that detects proximity or contact of an object; a drive electrode to which the excitation signal is applied; a first substrate on which the drive elements are provided; a second substrate on which at least one of the touch detection electrode and the drive electrode is provided, the second substrate being bonded to the first substrate to face each other via a sealing member; a conductor that electrically is coupled to at least one of the touch detection electrode and the drive electrode; and a conductor support member that fills a space between the first substrate and the second substrate and on the surface of which the conductor is provided.
    Type: Grant
    Filed: March 26, 2019
    Date of Patent: June 9, 2020
    Assignee: Japan Display Inc.
    Inventors: Koji Ishizaki, Hayato Kurasawa
  • Publication number: 20200174610
    Abstract: A sensor-equipped display device is provided including a display panel including a substrate, a sensor drive electrode, and a detection electrode opposed to the sensor drive electrode, wherein the detection electrode includes first and second layers in a first direction, the first layer has a first width in a second direction intersecting the first direction, the second layer has a second width in the second direction, the second width being wider than the first width, the first layer includes first lower and upper surfaces, the first upper surface being between the first lower surface and the second layer, the second layer includes a second lower surface located on the first upper surface, and a second upper surface opposed to the second lower surface, the second lower surface being between the second upper surface and the first layer, the second lower surface has a first region which is in contact with the first upper surface and a second region which is not in contact with the first upper surface, and the
    Type: Application
    Filed: February 11, 2020
    Publication date: June 4, 2020
    Inventors: Koji ISHIZAKI, Daisuke SONODA, Tatsuya IDE, Hiroyuki ITO
  • Patent number: 10670903
    Abstract: According to one embodiment, a display device comprises a first substrate includes a first area, a second area adjacent to the first area, and a first terminal portion located in the first area, and a second substrate includes an edge including a linear portion located between the first area and the second area, the second substrate overlapping the second area, wherein the second substrate further comprises a protruding portion protruding than the linear portion and a second terminal portion located in the protruding portion, and the display device further comprises a holding layer holding a gap between the second area and the protruding portion.
    Type: Grant
    Filed: March 28, 2018
    Date of Patent: June 2, 2020
    Assignee: Japan Display Inc.
    Inventors: Koji Ishizaki, Hayato Kurasawa, Masanobu Ikeda
  • Patent number: 10656740
    Abstract: According to one embodiment, a sensor-equipped display device includes a first substrate includes a first area and a second area adjacent to the first area, the first substrate includes a first terminal and a second terminal which are located in the first area, and a first wiring which electrically connects the first terminal and the second terminal, a second substrate includes a detection electrode, and a third terminal electrically connected to the detection electrode, and a connecting member which electrically connects the first terminal and the third terminal, at least a part of the first wiring being extended from the first terminal toward the second area.
    Type: Grant
    Filed: January 18, 2017
    Date of Patent: May 19, 2020
    Assignee: Japan Display Inc.
    Inventors: Koji Noguchi, Masaki Murase, Yasushi Nakano, Koji Ishizaki
  • Publication number: 20200150809
    Abstract: According to one embodiment, a touch detection device includes first detection electrodes in a detection area, second detection electrodes in the detection area, extending to intersect the first detection electrodes, first control lines connected to the first detection electrodes, respectively, and provided in a non-detection area, and second control lines connected to the second detection electrodes, respectively, and provided in the non-detection area. The second control lines overlap the first control lines at a plurality of positions as seen in plan view, such that areas of overlapping portions in which the first control lines overlap the second control lines are substantially equalized.
    Type: Application
    Filed: January 10, 2020
    Publication date: May 14, 2020
    Inventors: Chihiro TANAKA, Naoki TAKADA, Toshihiko TANAKA, Hayato KURASAWA, Koji ISHIZAKI, Tatsuya WAKIMOTO, Masaki MIYATAKE
  • Patent number: 10649563
    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: September 7, 2017
    Date of Patent: May 12, 2020
    Assignee: JAPAN DISPLAY INC.
    Inventors: Koji Ishizaki, Kouji Noguchi
  • Patent number: 10642434
    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: Grant
    Filed: February 20, 2019
    Date of Patent: May 5, 2020
    Assignee: Japan Display Inc.
    Inventors: Hayato Kurasawa, Koji Ishizaki
  • Patent number: 10636369
    Abstract: According to one embodiment, a display device, includes a display panel including a display portion, and a controller which controls the display panel, wherein the display portion includes pixel including a display element and a photodetector, the controller controls the display element based on a photodetection signal from the photodetector, the display element forms a first reflective region when overlapping a dark portion of the projected image, and forms a second reflective region when overlapping a bright portion of the projected image, a reflectance of the first reflective region is smaller than a reflectance of the second reflective region.
    Type: Grant
    Filed: October 30, 2018
    Date of Patent: April 28, 2020
    Assignee: Japan Display Inc.
    Inventor: Koji Ishizaki
  • Publication number: 20200117296
    Abstract: A detection device is provided and includes electrodes configured to detect a touch and including a plurality of first conductive thin wires and a plurality of second conductive thin wires, wherein the first conductive thin wires extend in a first direction, and include a first wire and a second wire which is adjacent to the first wire, the second conductive thin wires extend in a second direction intersecting the first direction, and include a third wire which intersects the first wire and the second wire, the first wire has a first slit, the second wire has a second slit, the third wire has a third slit between the first wire and the second wire, and the first slit, the second slit, and the third slit are arranged in a third direction which is different from the first direction and the second direction.
    Type: Application
    Filed: December 11, 2019
    Publication date: April 16, 2020
    Inventors: Koji ISHIZAKI, Hayato KURASAWA
  • Patent number: 10620743
    Abstract: A detection apparatus includes a substrate, a display area, a peripheral area, a plurality of electrodes, a plurality of terminals, a first wire, and a second wire. The display area is provided on the surface of the substrate. The peripheral area is provided outside the display area. The electrodes are provided to the display area. The terminals are provided in correspondence with the respective electrodes in the peripheral area. The first wire couples an electrode to a terminal. The second wire couples the electrode to the terminal to which the first wire is coupled.
    Type: Grant
    Filed: October 18, 2017
    Date of Patent: April 14, 2020
    Assignee: Japan Display Inc.
    Inventors: Koji Noguchi, Koji Ishizaki, Hayato Kurasawa
  • Patent number: 10613698
    Abstract: A display device with a touch detection device includes: a plurality of display elements that are arranged in a matrix of row and column directions and that are surrounded by scan lines each extending in a first direction and signal lines each extending in a second direction, the display elements including a red display element, a green display element, and a blue display element; a plurality of touch detection electrodes opposed to the display elements; a plurality of metal wires disposed on the touch detection electrodes, the metal wires extending along the signal lines and being disposed between the display elements adjacent to each other, wherein the metal wires are divided into metal wire parts that are arranged in the column direction, and the metal wire parts, each being longitudinal in the second direction, are disposed without crossing each other and spaced from each other in the column direction.
    Type: Grant
    Filed: May 23, 2019
    Date of Patent: April 7, 2020
    Assignee: Japan Display Inc.
    Inventors: Koji Ishizaki, Hayato Kurasawa, Kohei Azumi
  • Patent number: 10606403
    Abstract: A touch detection device includes: a substrate including a display region for displaying an image, a first frame region outside the display region, and a second frame region outside the first frame region; a plurality of detection electrodes that are arranged in the display region on a face parallel with the substrate and include metal wires; and frame wires that are coupled to the detection electrodes and arranged in the first frame region and the second frame region. A ratio of a covering area of the frame wires to a predetermined area of the substrate in the first frame region is smaller than a ratio of the covering area of the frame wires to the predetermined area of the substrate in the second frame region.
    Type: Grant
    Filed: March 18, 2019
    Date of Patent: March 31, 2020
    Assignee: Japan Display Inc.
    Inventors: Koji Ishizaki, Hayato Kurasawa
  • Patent number: 10606390
    Abstract: According to one embodiment, a touch detection device includes first detection electrodes in a detection area, second detection electrodes in the detection area, extending to intersect the first detection electrodes, first control lines connected to the first detection electrodes, respectively, and provided in a non-detection area, and second control lines connected to the second detection electrodes, respectively, and provided in the non-detection area. The second control lines overlap the first control lines at a plurality of positions as seen in plan view, such that areas of overlapping portions in which the first control lines overlap the second control lines are substantially equalized.
    Type: Grant
    Filed: October 31, 2017
    Date of Patent: March 31, 2020
    Assignee: JAPAN DISPLAY INC.
    Inventors: Chihiro Tanaka, Naoki Takada, Toshihiko Tanaka, Hayato Kurasawa, Koji Ishizaki, Tatsuya Wakimoto, Masaki Miyatake
  • Patent number: 10599246
    Abstract: According to an aspect, a display device with a touch detecting function includes: a substrate; a display area; a touch detection electrode provided with a plurality of conductive thin wires, each of the conductive thin wires including a plurality of thin wire pieces each having a linear shape and including a first end and a second end; a drive electrode; and a display functional layer. The adjacent thin wire pieces are arranged so as to be bent at a bent portion serving as a portion at which the second end of the one thin wire piece of the adjacent thin wire pieces is connected to the first end of the other thin wire piece of the adjacent thin wire pieces, and the conductive thin wires include a bent portion having an angle formed by the adjacent thin wire pieces different from angles of the other bent portions.
    Type: Grant
    Filed: February 28, 2019
    Date of Patent: March 24, 2020
    Assignee: Japan Display Inc.
    Inventors: Takeo Koito, Koji Ishizaki, Hayato Kurasawa
  • Patent number: 10585507
    Abstract: According to one embodiment, a sensor-equipped display device includes a display panel including a sensor drive electrode and a detection electrode opposed to the sensor drive electrode and a driver, wherein the detection electrode includes a first layer formed in a thin line shape, and a second layer on the first layer in a plan view of the display area, the second layer having a reflectivity lower than that of the first layer, the outer edge of a second lower surface of the second layer is shifted with respect to the outer edge of a first upper surface of the first layer in a plan view, and the outermost outer edge of the second layer is positioned outside the outermost outer edge of the first layer in a plan view.
    Type: Grant
    Filed: November 29, 2016
    Date of Patent: March 10, 2020
    Assignee: Japan Display Inc.
    Inventors: Koji Ishizaki, Daisuke Sonoda, Tatsuya Ide, Hiroyuki Ito
  • Patent number: 10579199
    Abstract: According to an aspect, a detection device includes: a substrate; a detection electrode disposed on a plane parallel to a surface of the substrate and including conductive thin wires and electrical coupling portions disposed where the conductive thin wires intersect with each other or are bent, and are coupled with each other, the conductive thin wires being arranged in a mesh-like form; a coupling wire that couples the conductive thin wires with a detecting unit at an end portion of the detection electrode; and a protective layer that is made of an insulation material and that covers the detection electrode and the coupling wire. An area density of the conductive thin wires per unit area is smaller in an end region ranging from an electrical coupling portion closest to the coupling wire to the coupling wire than in a region of the entire detection electrode.
    Type: Grant
    Filed: July 3, 2019
    Date of Patent: March 3, 2020
    Assignee: Japan Display Inc.
    Inventors: Koji Ishizaki, Masahiro Teramoto, Yuji Sato