Patents by Inventor Toshinori Uehara

Toshinori Uehara 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: 10437367
    Abstract: A display apparatus includes a basement, a display functional layer, a first electrode, a guard electrode, and a detection controller. The basement has a first surface and a second surface opposite to the first surface. The display functional layer is arranged on the side of the second surface of the basement. The first electrode is arranged between the basement and the display functional layer and detects an object in contact with or in proximity to the first surface. The guard electrode is arranged between the first electrode and the basement and supplied with a guard signal. The guard signal suppresses a change in capacitance generated between the first electrode and the guard electrode. The detection controller is a controller to which a signal based on a change in capacitance of the first electrode is output from the first electrode.
    Type: Grant
    Filed: October 26, 2017
    Date of Patent: October 8, 2019
    Assignee: Japan Display Inc.
    Inventors: Hayato Kurasawa, Shinichiro Oka, Toshinori Uehara, Hiroshi Mizuhashi, Yoshitoshi Kida
  • Publication number: 20190302967
    Abstract: According to an aspect, a display device includes: a first substrate; a second substrate facing the first substrate; a display function layer between the first substrate and the second substrate and displaying an image; first electrodes in a detection region of the first substrate; second electrodes in the detection region above the second substrate; a first electrode selection circuit in a peripheral region outside the detection region of the first substrate; and a second electrode selection circuit in a region overlapping with the peripheral region above the second substrate. The first electrode selection circuit selects some of the first electrodes, and supplies detection drive signals having phases determined on the basis of a certain code to the selected first electrodes. The second electrode selection circuit selects some of the second electrodes on the basis of a certain code, and couples the selected second electrodes to a single output signal line.
    Type: Application
    Filed: April 1, 2019
    Publication date: October 3, 2019
    Inventors: Hayato KURASAWA, Toshinori UEHARA, Yuji SUZUKI
  • 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
  • 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: 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: 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
  • Publication number: 20190235699
    Abstract: According to an aspect, a touch detecting apparatus includes: three or more detectors; a generating circuit that performs generation for generating a plurality of pieces of output data corresponding to a plurality of patterns and having resolution lower than resolution corresponding to the number of the detectors based on outputs from the detectors; a calculating circuit that performs calculation for calculating, for each of the detectors, a composite value to be used to derive a detection result of each of the detectors based on the pieces of output data corresponding to the patterns.
    Type: Application
    Filed: April 5, 2019
    Publication date: August 1, 2019
    Inventors: Toshinori UEHARA, Hiroshi MIZUHASHI, Toshio SOYA
  • Publication number: 20190220147
    Abstract: Included are a first cover base including an alkali glass layer, a first alkali-free glass layer provided on one face of the alkali glass layer, and a second alkali-free glass layer provided on another face of the alkali glass layer and a sensor that is provided on the first alkali-free glass layer of the first cover base and includes a plurality of first electrodes configured to detect the unevenness of a surface of an object to be detected that comes into contact with or close to the first cover base and a switching element. At least the first electrodes are formed above the first alkali-free glass layer and in a transmissive area that passes an image.
    Type: Application
    Filed: March 27, 2019
    Publication date: July 18, 2019
    Inventors: Hayato Kurasawa, Shoji Hinata, Toshinori Uehara, Hiroshi Mizuhashi, Yuji Suzuki, Yasuhiro Kanaya
  • Publication number: 20190171859
    Abstract: A fingerprint detection device includes: a substrate having a first surface and a second surface on an opposite side of the first surface, the first surface serving as a detection surface configured to detect unevenness of an object in contact or in proximity; a detection electrode provided on the second surface side of the substrate and configured to detect unevenness of a finger in contact or in proximity on the basis of an electrostatic capacitance change; and a drive circuit provided on the second surface side of the substrate and configured to supply a drive signal to the detection electrode.
    Type: Application
    Filed: January 29, 2019
    Publication date: June 6, 2019
    Inventors: Hayato Kurasawa, Toshinori Uehara, Hiroshi Mizuhashi
  • Patent number: 10310166
    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: Grant
    Filed: April 7, 2016
    Date of Patent: June 4, 2019
    Assignee: Japan Display Inc.
    Inventors: Toshinori Uehara, Hayato Kurasawa, Masashi Mitsui
  • Patent number: 10303301
    Abstract: According to an aspect, a touch detecting apparatus includes: three or more detectors; a generating circuit that performs generation for generating a plurality of pieces of output data corresponding to a plurality of patterns and having resolution lower than resolution corresponding to the number of the detectors based on outputs from the detectors; a calculating circuit that performs calculation for calculating, for each of the detectors, a composite value to be used to derive a detection result of each of the detectors based on the pieces of output data corresponding to the patterns.
    Type: Grant
    Filed: February 20, 2017
    Date of Patent: May 28, 2019
    Assignee: Japan Display Inc.
    Inventors: Toshinori Uehara, Hiroshi Mizuhashi, Toshio Soya
  • Publication number: 20190146619
    Abstract: According to an aspect, a display device includes: a first substrate; a display functional layer; a plurality of first electrodes; a light guide plate; a plurality of second electrodes; and a controller configured to control the first electrodes and the second electrodes. The first substrate, the display functional layer, the first electrodes, the light guide plate, and the second electrodes are stacked in this order. The controller performs operations during a plurality of display periods to display an image, during a first sensing period, and during a second sensing period in a time-division manner. The first electrodes are supplied with a first drive signal and an electromotive force caused by electromagnetic induction is generated in the second electrodes during the first sensing period. The first electrodes are supplied with a second drive signal to generate electrostatic capacitance between the first electrodes and the second electrodes during the second sensing period.
    Type: Application
    Filed: October 26, 2018
    Publication date: May 16, 2019
    Applicant: Japan Display Inc.
    Inventors: Hayato KURASAWA, Toshinori UEHARA
  • Patent number: 10282029
    Abstract: Included are a first cover base including an alkali glass layer, a first alkali-free glass layer provided on one face of the alkali glass layer, and a second alkali-free glass layer provided on another face of the alkali glass layer and a sensor that is provided on the first alkali-free glass layer of the first cover base and includes a plurality of first electrodes configured to detect the unevenness of a surface of an object to be detected that comes into contact with or close to the first cover base and a switching element. At least the first electrodes are formed above the first alkali-free glass layer and in a transmissive area that passes an image.
    Type: Grant
    Filed: July 6, 2017
    Date of Patent: May 7, 2019
    Assignee: Japan Display Inc.
    Inventors: Hayato Kurasawa, Shoji Hinata, Toshinori Uehara, Hiroshi Mizuhashi, Yuji Suzuki, Yasuhiro Kanaya
  • Publication number: 20190102006
    Abstract: According to an aspect, a detection device includes: an insulating substrate including a plurality of detection electrodes; a transmission conductor disposed adjacent to the detection electrodes; a drive signal generator coupled to the transmission conductor; and a detector coupled to the detection electrodes. The drive signal generator generates a detection drive signal and supplies the detection drive signal to the transmission conductor. The detector detects a detection signal corresponding to a change in capacitance in the detection electrodes.
    Type: Application
    Filed: September 24, 2018
    Publication date: April 4, 2019
    Inventors: Yuji SUZUKI, Toshinori UEHARA, Hayato KURASAWA
  • Publication number: 20190102039
    Abstract: A detection apparatus includes a substrate, a plurality of first electrodes provided on the substrate, a first selection circuit provided on the substrate, the first selection circuit including a plurality of first input terminals that receive a first control signal supplied from an outside and a plurality of first output terminals that output a first selection signal based on the first control signal, and a second selection circuit provided on the substrate, the second selection circuit including a plurality of second input terminals that receive a second control signal supplied from the outside and a plurality of second output terminals that output a second selection signal based on the second control signal.
    Type: Application
    Filed: September 24, 2018
    Publication date: April 4, 2019
    Inventors: Toshinori UEHARA, Hayato KURASAWA
  • Publication number: 20190102596
    Abstract: According to an aspect, a detection device includes: a first circuit substrate; a glass substrate attached at a position close to one surface of the first circuit substrate; a metal wire that couples an electrode provided on the one surface of the first circuit substrate to an electrode provided on the glass substrate; and a resin member that covers the glass substrate and the metal wire. The glass substrate includes a detection electrode that detects electrostatic capacitance.
    Type: Application
    Filed: September 26, 2018
    Publication date: April 4, 2019
    Inventors: Daichi SUZUKI, Hayato KURASAWA, Hiroshi MIZUHASHI, Toshinori UEHARA, Yuji SUZUKI
  • Publication number: 20190102038
    Abstract: A detection apparatus includes a substrate, a plurality of first electrodes provided on the substrate, and a first electrode selection circuit provided on the substrate and including a first selection circuit configured to provide a first selection signal having a phase determined for each of the plurality of first electrodes and a second selection circuit configured to provide a second selection signal having a phase determined for each of first electrode blocks including the plurality of first electrodes.
    Type: Application
    Filed: September 20, 2018
    Publication date: April 4, 2019
    Inventors: Toshinori UEHARA, Hayato KURASAWA, Takanori TSUNASHIMA, Kenshi TADA
  • Publication number: 20190102020
    Abstract: A detection apparatus includes a substrate, a plurality of first electrode blocks provided on the substrate, each of the first electrode blocks including a plurality of first electrodes, and a first electrode selection circuit configured to select at least one of the first electrode blocks in a time-division manner in a first detection period and select at least one of the first electrodes in a second detection period. The least one of the first electrode blocks selected by the first electrode selection circuit is supplied with a first drive signal in the first detection period, and the at least one of the first electrodes selected by the first electrode selection circuit is supplied with a second drive signal, a voltage level of the second drive signal different from a voltage level of the first drive signal in the second detection period.
    Type: Application
    Filed: September 24, 2018
    Publication date: April 4, 2019
    Inventors: Yuji SUZUKI, Toshinori UEHARA, Hayato KURASAWA
  • Patent number: 10242244
    Abstract: A fingerprint detection device includes: a substrate having a first surface and a second surface on an opposite side of the first surface, the first surface serving as a detection surface configured to detect unevenness of an object in contact or in proximity; a detection electrode provided on the second surface side of the substrate and configured to detect unevenness of a finger in contact or in proximity on the basis of an electrostatic capacitance change; and a drive circuit provided on the second surface side of the substrate and configured to supply a drive signal to the detection electrode.
    Type: Grant
    Filed: January 23, 2017
    Date of Patent: March 26, 2019
    Assignee: Japan Display Inc.
    Inventors: Hayato Kurasawa, Toshinori Uehara, Hiroshi Mizuhashi
  • Publication number: 20190018999
    Abstract: A display panel including a display function layer displaying an image in a display area, a cover member including a first face and a second face disposed on an opposite side of the first face and faces the display panel, and a fingerprint sensor including a plurality of first detection electrodes disposed in a sensor base and configured to detect unevenness of an object brought into contact with or approaching the first face of the cover member, a shield electrode disposed to face the plurality of first detection electrodes and configured to suppress a change in capacitance between the first detection electrodes and the shield electrode, and switching elements disposed in correspondence with the first detection electrodes, the fingerprint sensor being arranged between the cover member and the display panel and arranged to overlap with the display area when viewed in a direction perpendicular to the first face are included.
    Type: Application
    Filed: September 19, 2018
    Publication date: January 17, 2019
    Inventors: Toshinori Uehara, Yoshitoshi Kida, Hiroshi Mizuhashi, Hayato Kurasawa, Yuji Suzuki, Shoji Hinata, Toshiya Yamazaki