Patents by Inventor Takanori Tsunashima

Takanori Tsunashima 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: 20210098507
    Abstract: According to one embodiment, a semiconductor device including, a panel including an inorganic film, and a first pad and a second pad positioned on the inorganic film, and a line substrate including a first connection line electrically connected to the first pad, and a second connection line electrically connected to the second pad, the line substrate positioned on the panel, wherein the inorganic film includes a first cut portion overlapping the first connection line, a second cut portion overlapping the second connection line, and a first extension portion between the first cut portion and the second cut portion, and the first cut portion, the second cut portion, and the first extension portion extend to a first side of the panel.
    Type: Application
    Filed: December 14, 2020
    Publication date: April 1, 2021
    Applicant: Japan Display Inc.
    Inventor: Takanori TSUNASHIMA
  • Publication number: 20210012082
    Abstract: A fingerprint detection apparatus comprising: an insulating substrate; a plurality of photoelectric conversion elements arrayed in a detection region of the insulating substrate, each of the photoelectric conversion elements configured to output a signal in accordance with light incident on each of the photoelectric conversion elements; first switching element, each corresponding to each of the photoelectric conversion elements and including a first semiconductor made of oxide semiconductor; a plurality of gate lines coupled with the first switching elements and extending in a first direction; a plurality of signal lines coupled with the first switching elements and extending in a second direction intersecting the first direction; and a gate line drive circuit including a second switching element that includes a second semiconductor made of polycrystalline silicone, the gate line drive circuit being provided in a peripheral region outside the detection region and configured to drive the gate lines.
    Type: Application
    Filed: September 25, 2020
    Publication date: January 14, 2021
    Inventors: Makoto UCHIDA, Takanori TSUNASHIMA, Masahiro TADA, Tomoyuki ITO, Takashi NAKAMURA
  • Publication number: 20210005771
    Abstract: The problem of the present disclosure is to provide a photo sensor circuit that uses oxide semiconductor transistors and the operation of which is stable. The photo sensor circuit includes: a photo transistor; a first switching transistor; a second switching transistor; and a capacitance element. The photo transistor includes: a gate connected to a first wiring; a source connected to a second wiring; and a drain. The first switching transistor includes: a gate connected to a third wiring; a source connected to a fourth wiring; and a drain connected to the drain of the photo transistor. The capacitance element includes: a first terminal connected to the drain of the photo transistor; and a second terminal connected to the source of the first switching transistor. The second switching transistor includes: a gate connected to a gate line; a source connected to a signal line; and a drain connected to the first terminal of the capacitance element.
    Type: Application
    Filed: September 18, 2020
    Publication date: January 7, 2021
    Applicant: Japan Display Inc.
    Inventors: Masashi TSUBUKU, Takanori TSUNASHIMA, Marina MOCHIZUKI
  • Publication number: 20200381472
    Abstract: According to one embodiment, an optical sensor device includes an insulating substrate, a first conductive layer and an optical sensor element disposed between the insulating substrate and the first conductive layer. The optical sensor element is electrically connected to the first conductive layer and covered by the first conductive layer. The optical sensor element includes a first semiconductor layer formed of an oxide semiconductor and controls an amount of charge flowing to the first conductive layer according to an amount of incident light to the first semiconductor layer.
    Type: Application
    Filed: August 21, 2020
    Publication date: December 3, 2020
    Applicant: Japan Display Inc.
    Inventors: Takanori TSUNASHIMA, Masashi Tsubuku, Makoto Uchida
  • Patent number: 10522573
    Abstract: According to one embodiment, a display device includes a pixel, a scanning line, a signal line, a pixel electrode, a first switching element, and a capacitance line producing capacitance together with the pixel electrode. The first switching element includes a first semiconductor layer connected to the signal line and the pixel electrode, and a first gate electrode opposed to the first semiconductor layer and connected to the scanning line. The capacitance line includes a first portion opposed to the scanning line and extending in an extension direction of the scanning line, a second portion connected to the first portion and opposed to the pixel electrode.
    Type: Grant
    Filed: April 1, 2019
    Date of Patent: December 31, 2019
    Assignee: Japan Display Inc.
    Inventors: Makoto Uchida, Takanori Tsunashima
  • Patent number: 10452183
    Abstract: According to one embodiment, a display device equipped with a touch detection function includes scanning lines, and series-connected unit register circuits, wherein a touch detection operation is performed in a scan stop period, each of the unit register circuits is composed of single-channel transistors, holds and outputs a scanning signal when a voltage leak of a held signal is equal to or lower than a predetermined value, a dummy unit register circuit is provided between a previous unit register circuit which drives a last scanning line before start of the scan stop period and a subsequent unit register circuit which drives a first scanning line after end of the scan stop period, and the dummy unit register circuit continues outputting the scanning signal to the subsequent unit register circuit during the scan stop period.
    Type: Grant
    Filed: December 20, 2017
    Date of Patent: October 22, 2019
    Assignee: Japan Display Inc.
    Inventor: Takanori Tsunashima
  • Patent number: 10381386
    Abstract: According to one embodiment, a display device includes a pixel, a scanning line, a signal line, a pixel electrode, a first switching element, and a capacitance line producing capacitance together with the pixel electrode. The first switching element includes a first semiconductor layer connected to the signal line and the pixel electrode, and a first gate electrode opposed to the first semiconductor layer and connected to the scanning line. The capacitance line includes a first portion opposed to the scanning line and extending in an extension direction of the scanning line, a second portion connected to the first portion and opposed to the pixel electrode.
    Type: Grant
    Filed: June 7, 2018
    Date of Patent: August 13, 2019
    Assignee: JAPAN DISPLAY INC.
    Inventors: Makoto Uchida, Takanori Tsunashima
  • Publication number: 20190229135
    Abstract: According to one embodiment, a display device includes a pixel, a scanning line, a signal line, a pixel electrode, a first switching element, and a capacitance line producing capacitance together with the pixel electrode. The first switching element includes a first semiconductor layer connected to the signal line and the pixel electrode, and a first gate electrode opposed to the first semiconductor layer and connected to the scanning line. The capacitance line includes a first portion opposed to the scanning line and extending in an extension direction of the scanning line, a second portion connected to the first portion and opposed to the pixel electrode.
    Type: Application
    Filed: April 1, 2019
    Publication date: July 25, 2019
    Applicant: Japan Display, Inc.
    Inventors: Makoto UCHIDA, Takanori TSUNASHIMA
  • 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
  • Patent number: 10241605
    Abstract: According to one embodiment, a liquid crystal display device includes touch-sensor electrodes, an array substrate including pixel electrodes, gate lines, source lines, switching elements, a light-shielding layer, and a plurality of stripe-like common electrodes, a counter-substrate, and a liquid crystal layer, wherein the common electrodes included in the array substrate are used not only as electrodes for display, but also as touch-sensor electrodes and, in a touch operation, a touch drive signal is input to each drive unit electrode including a plurality of common electrodes, and the light-shielding layer is divided into parts each of which corresponds to the drive unit electrode, and is provided to extend across a region opposed to a region of the drive unit electrode.
    Type: Grant
    Filed: February 16, 2017
    Date of Patent: March 26, 2019
    Assignee: Japan Display Inc.
    Inventors: Takanori Tsunashima, Takashi Nakamura, Masahiro Tada, Kazuhide Mochizuki
  • Publication number: 20190025659
    Abstract: According to one embodiment, a display device including a first source line, a second source line and a third source line arranged in a first direction, a first gate line crossing the first source line, a second gate line separated from the first gate line in the first direction and crossing the third source line, a first semiconductor layer including a first crossing portion which crosses the first gate line and is located on a first source line side between the first source line and the second source line, and a second semiconductor layer including a second crossing portion which crosses the second gate line and is located on a third source line side between the second source line and the third source line.
    Type: Application
    Filed: July 16, 2018
    Publication date: January 24, 2019
    Applicant: Japan Display Inc.
    Inventors: Makoto UCHIDA, Takanori Tsunashima, Hitoshi Tanaka
  • Publication number: 20190019466
    Abstract: According to one embodiment, a driving method of a display device including a display area in which liquid crystal pixels are arranged in a matrix, a plurality of scanning lines arranged along display rows, a plurality of signal lines arranged along display columns, a backlight which illuminates the display area, and a controller which controls a display operation, the driving method includes via the controller, driving the scanning lines alternately from a center of the display area to both edges of the display area, outputting video data corresponding to a driven scanning line to the signal lines in synchronization with the driving of the scanning line, and turning on the backlight for a predetermined time after outputting the video data of one frame.
    Type: Application
    Filed: July 9, 2018
    Publication date: January 17, 2019
    Applicant: Japan Display Inc.
    Inventors: Takanori Tsunashima, Yoshiro Aoki, Makoto Uchida
  • Publication number: 20180286892
    Abstract: According to one embodiment, a display device includes a pixel, a scanning line, a signal line, a pixel electrode, a first switching element, and a capacitance line producing capacitance together with the pixel electrode. The first switching element includes a first semiconductor layer connected to the signal line and the pixel electrode, and a first gate electrode opposed to the first semiconductor layer and connected to the scanning line. The capacitance line includes a first portion opposed to the scanning line and extending in an extension direction of the scanning line, a second portion connected to the first portion and opposed to the pixel electrode.
    Type: Application
    Filed: June 7, 2018
    Publication date: October 4, 2018
    Applicant: Japan Display Inc.
    Inventors: Makoto UCHIDA, Takanori TSUNASHIMA
  • Patent number: 10038016
    Abstract: According to one embodiment, a display device includes a pixel, a scanning line, a signal line, a pixel electrode, a first switching element, and a capacitance line producing capacitance together with the pixel electrode. The first switching element includes a first semiconductor layer connected to the signal line and the pixel electrode, and a first gate electrode opposed to the first semiconductor layer and connected to the scanning line. The capacitance line includes a first portion opposed to the scanning line and extending in an extension direction of the scanning line, a second portion connected to the first portion and opposed to the pixel electrode.
    Type: Grant
    Filed: June 23, 2017
    Date of Patent: July 31, 2018
    Assignee: Japan Display Inc.
    Inventors: Makoto Uchida, Takanori Tsunashima
  • Publication number: 20180210246
    Abstract: According to one embodiment, a display device including a first substrate including a first electrode, a second electrode located above the first electrode and having potential different from the first electrode, and a third electrode located above the second electrode and electrically connected to the first electrode, a second substrate facing the first substrate, and a liquid crystal layer held between the first substrate and the second substrate, wherein at least one of the second electrode and the third electrode includes a first side, and a second side which faces the first side and is not parallel to the first side.
    Type: Application
    Filed: January 18, 2018
    Publication date: July 26, 2018
    Applicant: Japan Display Inc.
    Inventors: Makoto Uchida, Takanori Tsunashima
  • Publication number: 20180181243
    Abstract: According to one embodiment, a display device equipped with a touch detection function includes scanning lines, and series-connected unit register circuits, wherein a touch detection operation is performed in a scan stop period, each of the unit register circuits is composed of single-channel transistors, holds and outputs a scanning signal when a voltage leak of a held signal is equal to or lower than a predetermined value, a dummy unit register circuit is provided between a previous unit register circuit which drives a last scanning line before start of the scan stop period and a subsequent unit register circuit which drives a first scanning line after end of the scan stop period, and the dummy unit register circuit continues outputting the scanning signal to the subsequent unit register circuit during the scan stop period.
    Type: Application
    Filed: December 20, 2017
    Publication date: June 28, 2018
    Applicant: Japan Display Inc.
    Inventor: Takanori Tsunashima
  • Patent number: 10002579
    Abstract: According to one embodiment, a first Pixel is connected to a first source line via a first switch included in a first Pixel and the second Pixel is connected to a second source line via a second switch included in the second Pixel. The first Pixel has a first memory, and the second Pixel has a second memory. A first potential line supplies data 1 and a second potential line supplies data 0. The first and second Pixels can store data 1 or 0, when a gate signal is applied to a gate line and the first and second switches are turned on. In this case, in order to store the same data (1 or 0) in the first and second memories, the first and second source lines should be applied different revel signals each other.
    Type: Grant
    Filed: May 16, 2016
    Date of Patent: June 19, 2018
    Assignee: Japan Display Inc.
    Inventor: Takanori Tsunashima
  • Patent number: 9891748
    Abstract: According to one embodiment, a display device includes plural display pixels arranged in a matrix, plural gate lines, plural source lines and a control circuit which controls by applying intermittent driving and a column-inversion drive scheme, an operation in which drive signals are supplied to the gate lines and the source lines, and an image signal is supplied to the display pixels and held thereby, wherein the display pixels each include a liquid crystal in which alignment of liquid crystal molecules is changed by a voltage between pixel electrodes and a common electrode, and the control circuit applies in a signal stop period in the intermittent driving, a voltage corresponding to a gradation higher than or equal to white gradation to the source lines in a case where a display mode of the liquid crystal is a normally-black mode.
    Type: Grant
    Filed: March 3, 2016
    Date of Patent: February 13, 2018
    Assignee: Japan Display Inc.
    Inventors: Takashi Nakamura, Masahiro Tada, Takanori Tsunashima, Hirotaka Hayashi, Kazuhide Mochizuki
  • Patent number: 9858871
    Abstract: According to one embodiment, a display device includes a unit pixel including a first pixel, a second pixel neighboring to the first pixel in a column direction, a third pixel neighboring to the first pixel in a row direction, and a fourth pixel neighboring to the second pixel in the row direction, a scanning line extending in the row direction and electrically connected to the first to fourth pixels, and first to fourth signal lines extending in the column direction and provided at intervals therebetween in the row direction, and the first to fourth signal lines are electrically connected to the first to fourth pixels, and video signal potentials for inverted drive applied to the first and second signal lines are inverted in polarity with respect to each other, and those to the third and fourth signal lines are inverted in polarity with respect to each other.
    Type: Grant
    Filed: March 2, 2015
    Date of Patent: January 2, 2018
    Assignee: Japan Display Inc.
    Inventors: Takanori Tsunashima, Hirotaka Hayashi
  • Publication number: 20170373096
    Abstract: According to one embodiment, a display device includes a pixel, a scanning line, a signal line, a pixel electrode, a first switching element, and a capacitance line producing capacitance together with the pixel electrode. The first switching element includes a first semiconductor layer connected to the signal line and the pixel electrode, and a first gate electrode opposed to the first semiconductor layer and connected to the scanning line. The capacitance line includes a first portion opposed to the scanning line and extending in an extension direction of the scanning line, a second portion connected to the first portion and opposed to the pixel electrode.
    Type: Application
    Filed: June 23, 2017
    Publication date: December 28, 2017
    Applicant: Japan Display Inc.
    Inventors: Makoto UCHIDA, Takanori TSUNASHIMA