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: 20190302505
    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: June 20, 2019
    Publication date: October 3, 2019
    Applicant: JAPAN DISPLAY INC.
    Inventors: Kenta SEKI, Gen Koide, Hayato Kurasawa
  • Publication number: 20190294294
    Abstract: A display apparatus includes a plurality of display panels arranged in a matrix, each of the image display panel includes a plurality of drive electrodes extending in a first direction and a plurality of detection electrodes extending in a second direction crossing the first direction, wherein an AC voltage is sequentially applied to the plurality of drive electrodes of a first display panel, and the plurality of detection electrodes of a second display panel adjacent to the first display panel detect a signal output from the plurality of drive electrodes of the first display panel.
    Type: Application
    Filed: June 14, 2019
    Publication date: September 26, 2019
    Inventors: Shinya IUCHI, Hayato KURASAWA, Masahiro TOGASHI, Tsutomu HARADA, Yuji SUZUKI
  • Patent number: 10423021
    Abstract: In one embodiment, the present invention includes a substrate; a detection electrode provided in a display region on a plane parallel to the substrate, the detection electrode including a plurality of metal wires; a first conductive layer provided in a peripheral region located to the outside the display region; a protective layer provided on the detection electrode; a polarizing plate provided above the protective layer; and a second conductive layer provided between the polarizing plate and the protective layer in a direction perpendicular to the substrate. The second conductive layer has a higher sheet resistance than the metal wires and is electrically coupled to the first conductive layer.
    Type: Grant
    Filed: March 1, 2018
    Date of Patent: September 24, 2019
    Assignee: Japan Display Inc.
    Inventors: Hayato Kurasawa, Koji Ishizaki
  • Publication number: 20190286276
    Abstract: A display apparatus capable of reducing the lowering of detection sensitivity is provided. A display apparatus provided with a pixel array having a plurality of pixels arranged in a matrix form includes: detection electrodes which are in parallel with each other, which are arranged so as to extend in a first direction, and which are connected so as to forma magnetic-field detection coil; and a detection electrode having one end which is arranged inside the magnetic-field detection coil and which is connected to the magnetic-field detection coil, and the other end which is electrically insulated from the magnetic-field detection coil. At the time of each of the magnetic field detection and the electric field detection, an external object is detected based on a change in a signal in the detection electrodes.
    Type: Application
    Filed: June 7, 2019
    Publication date: September 19, 2019
    Inventors: Hayato Kurasawa, Yuji Suzuki, Hiroshi Mizuhashi
  • Patent number: 10416828
    Abstract: According to an aspect, a detecting apparatus includes: a touch detection electrode provided along a touch detection surface; a strain gauge integrated with the touch detection electrode.
    Type: Grant
    Filed: March 11, 2019
    Date of Patent: September 17, 2019
    Assignee: Japan Display Inc.
    Inventors: Shinya Iuchi, Taiki Kasai, Hayato Kurasawa
  • Patent number: 10416827
    Abstract: To provide a display capable of reducing each resistance of a drive electrode and a detection electrode, in the display which is provided with an input device having the drive electrode and the detection electrode formed on the same plane. A drive electrode includes a plurality of first electrode portions arranged in an X-axis direction, and a plurality of first connection portions each of which electrically connects the two first electrode portions adjacent to each other. A detection electrode includes a plurality of second electrode portions arranged in a Y-axis direction, and a plurality of second connection portions each of which electrically connects the two second electrode portions adjacent to each other. The first connection portion overlaps with the second connection portion in a planar view. Each of the first electrode portion and the second electrode portion contains metal or alloy, and has a mesh shape.
    Type: Grant
    Filed: June 27, 2018
    Date of Patent: September 17, 2019
    Assignee: Japan Display Inc.
    Inventors: Koji Ishizaki, Hayato Kurasawa, Hiroshi Mizuhashi
  • Publication number: 20190278966
    Abstract: According to one embodiment, a detection device includes a substrate, a drive electrode provided on the substrate, a detection electrode provided on the substrate and capacitively coupling with the drive electrode, and a first thin film transistor and a second thin film transistor, electrically connected to the drive electrode, and the first thin film transistor has a withstand voltage higher than a withstand voltage of the second thin film transistor.
    Type: Application
    Filed: March 5, 2019
    Publication date: September 12, 2019
    Inventors: Yoshitaka OZEKI, Hayato KURASAWA, Toshinori UEHARA, Koshiro MORIGUCHI
  • Publication number: 20190278391
    Abstract: A display apparatus with a touch detection function capable of improving accuracy is provided. The display apparatus includes: a pixel array having a plurality of pixels arranged in a matrix form; and a plurality of signal wires arranged in the pixel array. Here, when an externally-detecting object is detected, a plurality of coils having areas overlapping with each other are formed of a plurality of signal wires (drive electrodes) among the plurality of signal wires, and a magnetic field generated in the plurality of respective coils are superimposed in an overlapped area by supplying a drive signal to the plurality of coils.
    Type: Application
    Filed: May 24, 2019
    Publication date: September 12, 2019
    Inventors: Hiroshi MIZUHASHI, Hayato KURASAWA, Daichi SUZUKI, Fumitaka GOTOH
  • Publication number: 20190278403
    Abstract: A display device includes a substrate, a plurality of pixel electrodes, a switching element, and a first electrode. The substrate has a first surface and a second surface opposite to the first surface. The pixel electrodes are provided to the first surface side and supplied with a pixel signal for displaying an image. The switching element is provided to the first surface side and coupled to the pixel electrodes. The first electrode is provided to a layer closer to the first surface than the switching element in a manner facing the switching element in a direction perpendicular to the first surface of the substrate and having lower light transmittance than that of the substrate.
    Type: Application
    Filed: May 23, 2019
    Publication date: September 12, 2019
    Inventors: Hayato KURASAWA, Koji NOGUCHI
  • Publication number: 20190278402
    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: Application
    Filed: May 23, 2019
    Publication date: September 12, 2019
    Inventors: Koji ISHIZAKI, Hayato KURASAWA, Kohei AZUMI
  • Patent number: 10402010
    Abstract: A detection device is capable of detecting an external proximity object, and includes a substrate and a plurality of detection electrodes. The detection electrodes are each provided with a plurality of thin conductive wires having a plurality of first thin wire pieces and a plurality of second thin wire pieces which are electrically conducted with one another. Angles each of which is formed by an intersection between the first thin wire piece extending in a first direction and the second thin wire piece extending in a second direction different from the first direction included in the thin conductive wire, are constant, and a distance between the first thin wire pieces of different thin conductive wires is not constant.
    Type: Grant
    Filed: March 20, 2019
    Date of Patent: September 3, 2019
    Assignee: Japan Display Inc.
    Inventor: Hayato Kurasawa
  • Patent number: 10394067
    Abstract: According to an aspect, a detection device includes: a first detector and a second detector each configured to detect that an object is in contact therewith or in proximity thereto; a signal processor configured to perform signal processing on a detection signal output from the first detector and the second detector; and a selector configured to select one of the first detector and the second detector, and couple the selected one of the first detector and the second detector to the signal processor.
    Type: Grant
    Filed: November 29, 2017
    Date of Patent: August 27, 2019
    Assignee: Japan Display Inc.
    Inventors: Toshinori Uehara, Hiroshi Mizuhashi, Hayato Kurasawa
  • Publication number: 20190258356
    Abstract: A touch panel is disclosed herein. In an embodiment, the touch panel includes a substrate with first and second surfaces, a drive electrode facing the first surface, a plurality of touch detection electrodes facing the second surface, and a dummy electrode between adjacent touch detection electrodes. Each touch detection electrode includes a first conductive thin wire extending parallel to the first and second surfaces. The dummy electrode includes a second conductive thin wire extending along the first conductive thin wire. The first conductive thin wire includes a first bent portion and a second bent portion alternately arranged with the first conductive thin wire having a zigzag pattern. The second conductive thin wire includes a third bent portion and a slit that are alternately arranged. The third bent portion is arranged on a virtual straight line formed by virtually connecting the first bent portions of one first conductive thin wire.
    Type: Application
    Filed: May 2, 2019
    Publication date: August 22, 2019
    Inventors: Koji ISHIZAKI, Hayato KURASAWA, Takeo KOITO
  • Publication number: 20190250325
    Abstract: According to one embodiment, a display device includes a display panel, a light source, a lightguide, and reflective elements. The lightguide includes a first end facing the light source, a first surface opposed to the display panel, and a second surface. The reflective elements are disposed inside the lightguide, the elements configured to reflect light passing through the first end to spread in the lightguide and to transmit the light through the first surface. Reflective elements are arranged to be apart from the first or second surface with a certain distance and has a reflective surface facing the first surface and projects toward the second surface, the reflective surface is inclined such that the light from the first end can be irradiated to the first surface.
    Type: Application
    Filed: April 23, 2019
    Publication date: August 15, 2019
    Inventors: Toshinori Uehara, Hayato Kurasawa, Masashi Mitsui
  • Patent number: 10379652
    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: September 4, 2018
    Date of Patent: August 13, 2019
    Assignee: Japan Display Inc.
    Inventors: Hayato Kurasawa, Yasuyuki Teranishi, Hiroshi Mizuhashi, Koji Ishizaki, Daisuke Ito
  • Publication number: 20190243484
    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: Application
    Filed: January 24, 2019
    Publication date: August 8, 2019
    Inventors: Chihiro Tanaka, Hayato Kurasawa, Naoki Takada, Toshihiko Tanaka, Tatsuya Wakimoto, Keita Sasanuma, Koji Ishizaki
  • Publication number: 20190243507
    Abstract: According to one embodiment, a display device includes a plurality of gate lines, a plurality of data lines intersecting with the gate lines, a plurality of pixel electrodes, and a sensor drive controller which includes a plurality of common electrodes facing the pixel electrodes and detects a touch by controlling the common electrodes. The sensor drive controller selects at least one of the common electrodes, and supplies a sensor signal to the selected common electrode to set the selected common electrode to a sensing state. The sensor drive controller sets at least the common electrode adjacent to the common electrode set to the sensing state to a guard state and sets the other common electrodes to a floating state.
    Type: Application
    Filed: April 16, 2019
    Publication date: August 8, 2019
    Inventors: Hayato Kurasawa, Hiroshi Mizuhashi
  • Patent number: 10372278
    Abstract: A display device includes: a first substrate; a second substrate opposed to the first substrate; a display functional layer arranged between the first substrate and the second substrate to display an image in a display region; a first electrode layer that is arranged in the display region and includes a plurality of first electrodes for detecting contact or proximity of an external object; a second electrode arranged between the first substrate and the second substrate to be opposed to the first electrodes; a plurality of third electrodes that are arranged between the first substrate and the second substrate and receive a pixel signal; and an insulating layer covering the first electrode layer. In the insulating layer, a relative dielectric constant of a portion superimposed on the first electrodes is different from a relative dielectric constant of a portion not superimposed on the first electrodes at least in the display region.
    Type: Grant
    Filed: April 27, 2017
    Date of Patent: August 6, 2019
    Assignee: JAPAN DISPLAY INC.
    Inventors: Masanobu Ikeda, Hayato Kurasawa
  • Patent number: 10371981
    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: January 23, 2018
    Date of Patent: August 6, 2019
    Assignee: Japan Display Inc.
    Inventors: Kenta Seki, Gen Koide, Hayato Kurasawa
  • Patent number: 10372961
    Abstract: According to an aspect, a fingerprint sensor includes a first glass substrate, a second glass substrate, and a plurality of sensor electrodes between the first glass substrate and the second glass substrate. The first glass substrate and the second glass substrate are bonded together by a sealing material with the plurality of sensor electrodes interposed therebetween.
    Type: Grant
    Filed: March 27, 2017
    Date of Patent: August 6, 2019
    Assignee: Japan Display Inc.
    Inventors: Fumihito Shibano, Hiroshi Mizuhashi, Toshinori Uehara, Kimiyo Nonoyama, Hayato Kurasawa