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: 20200371618
    Abstract: According to one embodiment, a detection device includes a substrate, detection electrode, terminal formed of a metal material, lead, coating layer, conductive adhesion layer, and circuit board. The lead connects the electrode and the terminal. The coating layer covers the electrode and the lead, and partly covers the terminal. The adhesion layer covers a part of the terminal exposed from the coating layer and covers a part of the coating layer. The circuit board is connected to the terminal with the adhesion layer interposed therebetween. At least in an overlapping area where the adhesion layer covers the coating layer, an area of the metal material per unit area is smaller than that of the other area of the terminal.
    Type: Application
    Filed: August 10, 2020
    Publication date: November 26, 2020
    Inventors: Hayato Kurasawa, Keisuke Asada, Tatsuya Ide, Koji Ishizaki
  • Patent number: 10838561
    Abstract: A detection apparatus comprising: a first substrate; a detection region having a first detection side extending along a first direction parallel with a surface of the first substrate and a second detection side extending along a second direction intersecting the first direction; a frame region provided outside the detection region and having a first frame region extending along the first detection side and a second frame region extending along the second detection side; a first electrode provided at a position overlapping the detection region of the first substrate, the first electrode extending in the second direction; a second electrode provided at a position overlapping the detection region, the second electrode extending in the first direction; a plurality of terminals provided in the first frame region of the first substrate and arrayed in the first direction, and including a first terminal; a first wire; and a second wire.
    Type: Grant
    Filed: January 24, 2019
    Date of Patent: November 17, 2020
    Assignee: Japan Display Inc.
    Inventors: Chihiro Tanaka, Hayato Kurasawa, Naoki Takada, Toshihiko Tanaka, Tatsuya Wakimoto, Keita Sasanuma, Koji Ishizaki
  • Patent number: 10824041
    Abstract: According to one embodiment, a display device includes a switching element including a source electrode and a drain electrode, an inorganic insulating film in contact with the source electrode and the drain electrode, a metal film in contact with the inorganic insulating film and including an opening in a position superimposed on the drain electrode, a capacitor insulating film covering the metal film, an pixel electrode located on the capacitor insulating film and electrically connected to the drain electrode, an electrophoretic element located on the pixel electrode and a common electrode located on the electrophoretic element, and the metal film includes a forward tapered end portion in the opening.
    Type: Grant
    Filed: September 27, 2018
    Date of Patent: November 3, 2020
    Assignee: Japan Display Inc.
    Inventors: Yoshitaka Ozeki, Koji Ishizaki, Takahiro Takeuchi, Koshiro Moriguchi
  • Patent number: 10817108
    Abstract: An information input device including a touch panel configured to be provided with a touch sensor that detects a position at which a sensing object is brought close to a sensing surface. In this information input device, the touch sensor has a scanning electrode and a detecting electrode that is opposed to the scanning electrode with the intermediary of a dielectric substance, and is a capacitive sensor whose electrostatic capacitance changes if the sensing object is brought close to the detecting electrode. Furthermore, a slit is formed in a surface of the detecting electrode opposed to the scanning electrode.
    Type: Grant
    Filed: March 7, 2019
    Date of Patent: October 27, 2020
    Assignee: JAPAN DISPLAY INC.
    Inventors: Takayuki Nakanishi, Koji Noguchi, Koji Ishizaki, Yasuyuki Teranishi, Takeya Takeuchi
  • Publication number: 20200333911
    Abstract: The reliability of a display device with an input device is improved. A plurality of detection electrodes (input position detection electrodes) forming an electrostatic capacity between them and a common electrode of a display device to detect an input position are formed on a different substrate from substrates configuring the display device. Moreover, a polarizing plate and the substrate on which the plurality of detection electrodes are formed are adhesively fixed via, for example, an adhesive layer so that the plurality of detection electrodes are fixed so as to be separated apart from the display device. Thus, a distance between electrodes (the detection electrode and a driving electrode) for detecting an input position can be set separately from a thickness of the display device, and therefore, reduction in detection sensitivity (detection reliability) for the input position due to increase in the electrostatic capacity can be suppressed.
    Type: Application
    Filed: July 1, 2020
    Publication date: October 22, 2020
    Inventors: Hayato KURASAWA, Kohei AZUMI, Koji ISHIZAKI, Hideki KANEKO, Tsutomu HARADA
  • Patent number: 10802319
    Abstract: A display apparatus includes a first substrate, a second substrate facing the first substrate, lead wirings provided on the first substrate or the second substrate and a first insulator part provided on an upper surface of the second substrate. The lead wirings are arranged in a peripheral region when seen in a plan view and the first insulator part is arranged so as to overlap a display region when seen in a plan view. Second insulator parts or spaces with a permittivity lower than a permittivity of the first insulator part are provided at sides of the first insulator part. The second insulator parts or the spaces are arranged so as to overlap the lead wirings in the peripheral region when seen in a plan view.
    Type: Grant
    Filed: October 3, 2018
    Date of Patent: October 13, 2020
    Assignee: Japan Display Inc.
    Inventors: Koji Ishizaki, Masanobu Ikeda, Hayato Kurasawa, Yoshihiro Watanabe
  • Patent number: 10802639
    Abstract: According to one embodiment, a sensor-equipped display device includes first electrodes and a detection electrode. The first electrodes constitute sensor drive electrodes by being supplied with sensor drive signals separately and sequentially or sensor drive electrodes by simultaneously supplying the sensor drive signals to the first electrodes adjacent to each other. A width of the sensor drive electrode including the first electrode on the edge is smaller than a width of the other sensor drive electrode not including the first electrode on the edge.
    Type: Grant
    Filed: October 28, 2019
    Date of Patent: October 13, 2020
    Assignee: Japan Display Inc.
    Inventors: Hayato Kurasawa, Yasuyuki Teranishi, Hiroshi Mizuhashi, Koji Ishizaki, Daisuke Ito
  • Patent number: 10788942
    Abstract: An input device is provided and including a substrate; a plurality of first metal or alloy electrodes provided along a first direction on a main surface of the substrate; a plurality of second metal or alloy electrodes provided along a second direction intersecting with the first direction on the same surface as the main surface; and a protective film covering the plurality of first metal or alloy electrodes and the plurality of second metal or alloy electrodes.
    Type: Grant
    Filed: September 16, 2019
    Date of Patent: September 29, 2020
    Assignee: Japan Display, Inc.
    Inventors: Koji Ishizaki, Hayato Kurasawa, Hiroshi Mizuhashi
  • Patent number: 10775923
    Abstract: A display device includes: a display layer; plural first electrodes formed to be arranged above the display layer; a shield electrode formed apart from the plural first electrodes so as to surround the whole plural first electrodes along an arrangement surface; an insulating layer; and a semiconductive layer formed opposite to the first electrodes and the shield electrode so as to sandwich the insulating layer, wherein the difference between an average potential of the first electrodes and an average potential of the shield electrode is equal to or less than 0.5V.
    Type: Grant
    Filed: March 22, 2019
    Date of Patent: September 15, 2020
    Assignee: Japan Display Inc.
    Inventors: Hayato Kurasawa, Koji Ishizaki, Kohei Azumi
  • Patent number: 10775951
    Abstract: According to one embodiment, a detection device includes a substrate, detection electrode, terminal formed of a metal material, lead, coating layer, conductive adhesion layer, and circuit board. The lead connects the electrode and the terminal. The coating layer covers the electrode and the lead, and partly covers the terminal. The adhesion layer covers a part of the terminal exposed from the coating layer and covers a part of the coating layer. The circuit board is connected to the terminal with the adhesion layer interposed therebetween. At least in an overlapping area where the adhesion layer covers the coating layer, an area of the metal material per unit area is smaller than that of the other area of the terminal.
    Type: Grant
    Filed: August 21, 2019
    Date of Patent: September 15, 2020
    Assignee: Japan Display Inc.
    Inventors: Hayato Kurasawa, Keisuke Asada, Tatsuya Ide, Koji Ishizaki
  • Publication number: 20200285329
    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: May 21, 2020
    Publication date: September 10, 2020
    Inventors: Koji ISHIZAKI, Koji NOGUCHI, Masanobu IKEDA, Yasuyuki MATSUI
  • Patent number: 10768761
    Abstract: A detection device includes a first substrate including a first region, a second region and a third region, the second region arranged between the first region and the third region; a detection electrode arranged on the first substrate; a first electrode coupled to the detection electrode, continuously formed from the first region to the third region in a first direction on the first substrate, and including a plurality of concave portions in the second region; and a protective layer formed on the first electrode in the first region, wherein the protective layer is formed on a first one of the concave portions in the second region, wherein the protective film is not formed on a second one of the concave portions in the second region, the second one of the concave portions is arranged nearer to the third region than the first one of the concave portions.
    Type: Grant
    Filed: April 25, 2019
    Date of Patent: September 8, 2020
    Assignee: Japan Display Inc.
    Inventors: Koji Ishizaki, Daisuke Sonoda, Toshimasa Ishigaki
  • Publication number: 20200278572
    Abstract: A display device is provided and including first and second substrates, wherein the first substrate includes a first area, a second area overlapping the second substrate, a first edge extending in a first direction, a first terminal portion on the first area; the second substrate has a first protruding portion protruding toward the first edge of the first substrate and a second edge including a linear portion along the first edge and a curved portion connected to the linear portion and extending toward the first edge, the curved portion constitutes a part of a edge of the first protruding portion, and a width in the first direction of the first protruding portion gradually decreases toward the first edge.
    Type: Application
    Filed: May 19, 2020
    Publication date: September 3, 2020
    Inventors: Koji ISHIZAKI, Hayato KURASAWA, Masanobu IKEDA
  • Patent number: 10739903
    Abstract: The reliability of a display device with an input device is improved. A plurality of detection electrodes (input position detection electrodes) forming an electrostatic capacity between them and a common electrode of a display device to detect an input position are formed on a different substrate from substrates configuring the display device. Moreover, a polarizing plate and the substrate on which the plurality of detection electrodes are formed are adhesively fixed via, for example, an adhesive layer so that the plurality of detection electrodes are fixed so as to be separated apart from the display device. Thus, a distance between electrodes (the detection electrode and a driving electrode) for detecting an input position can be set separately from a thickness of the display device, and therefore, reduction in detection sensitivity (detection reliability) for the input position due to increase in the electrostatic capacity can be suppressed.
    Type: Grant
    Filed: December 29, 2017
    Date of Patent: August 11, 2020
    Assignee: Japan Display Inc.
    Inventors: Hayato Kurasawa, Kohei Azumi, Koji Ishizaki, Hideki Kaneko, Tsutomu Harada
  • Publication number: 20200233517
    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: Application
    Filed: April 3, 2020
    Publication date: July 23, 2020
    Applicant: Japan Display Inc.
    Inventors: Koji Ishizaki, Kouji Noguchi
  • Publication number: 20200233519
    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: April 8, 2020
    Publication date: July 23, 2020
    Inventors: Koji NOGUCHI, Masaki MURASE, Yasushi NAKANO, Koji ISHIZAKI
  • Publication number: 20200233511
    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: April 6, 2020
    Publication date: July 23, 2020
    Inventors: Hayato KURASAWA, Koji ISHIZAKI
  • Publication number: 20200225802
    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: Application
    Filed: March 26, 2020
    Publication date: July 16, 2020
    Inventors: Koji NOGUCHI, Koji ISHIZAKI, Hayato KURASAWA
  • Publication number: 20200218383
    Abstract: A display device with a touch detection device is provided and includes display elements arranged in matrix of row and column direction and surrounded by scan lines each extending in a first direction and a 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; light shielding members each extending in one direction, the light shielding members arranged between the display elements adjacent to each other; and touch detection electrodes each extending in the one direction and arranged between the light shielding members and the display elements, and the touch detection electrodes including metal wires that extend overlapping the light shielding members, 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 one direction, are disposed without crossing each other and spaced from each other in the one directio
    Type: Application
    Filed: March 23, 2020
    Publication date: July 9, 2020
    Inventors: Koji ISHIZAKI, Hayato KURASAWA, Kohei AZUMI
  • 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