Patents by Inventor Toshiaki Fukushima

Toshiaki Fukushima 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: 9824645
    Abstract: According to one embodiment, a display device includes first, second, and third interconnects, switch elements, pixel electrodes, a display layer, first, and second color filters, and a controller. The first interconnects extend in a first direction and are arranged in a second direction. The second interconnects extend in the second direction and are arranged in the first direction. The switch elements are electrically connected to the first and second interconnects. The pixel electrodes are electrically connected to the switch elements. The third interconnects extend in the second direction and are arranged in the first direction. The display layer performs an optical operation of light emission or a change of an optical characteristic. The first color filters are of a first color. The second color filters of a second color have a higher visibility than the first color. The controller is electrically connected to the first, second, and third interconnects.
    Type: Grant
    Filed: May 11, 2015
    Date of Patent: November 21, 2017
    Assignee: Japan Display Inc.
    Inventors: Hayato Kurasawa, Hiroshi Mizuhashi, Toshiaki Fukushima
  • Patent number: 9798403
    Abstract: According to one embodiment, a display device includes first and second substrate units, a display function layer, and a drive element. The first substrate unit includes a first substrate, a display unit, and a control circuit unit. The first substrate has a first surface including a display region and a peripheral region. The display unit is provided in the display region, and includes first lines, second lines, switch elements, pixel electrodes, and third lines. The control circuit unit is provided in the peripheral region, and includes a first circuit unit including a third line connection line, and a third line switch. The second substrate unit includes a second substrate and fourth lines. The display function layer is provided between the first and second substrate units. The drive element is provided on the peripheral region. The first circuit unit is partially disposed between the drive element and the first substrate.
    Type: Grant
    Filed: May 12, 2015
    Date of Patent: October 24, 2017
    Assignee: Japan Display Inc.
    Inventors: Hiroshi Mizuhashi, Toshiaki Fukushima, Gen Koide, Yoshiyuki Kii
  • Patent number: 9792865
    Abstract: To reduce the area of a portion where a plurality of transistors are provided in a region around a display region and to reduce the area of the region around the display region, a display device includes a first transistor and a second transistor each as a transistor, and the transistor includes a connection wiring that electrically connects a semiconductor film and a source-drain electrode to each other via an opening portion provided in an insulating film. The first transistor and the second transistor are adjacent to each other, and there is a clearance between an end portion, on the side of the second transistor, of the connection wiring in the first transistor and an end portion, on the side of the second transistor, of the opening portion in the first transistor.
    Type: Grant
    Filed: March 9, 2017
    Date of Patent: October 17, 2017
    Assignee: Japan Display Inc.
    Inventors: Gen Koide, Toshiaki Fukushima
  • Publication number: 20170285825
    Abstract: According to one embodiment, a display device includes first and second substrate units, a display function layer, and a drive element. The first substrate unit includes a first substrate, a display unit, and a circuit unit. The first substrate has a first surface including a display region and a peripheral region. The display unit is provided in the display region, and includes first lines, second lines, switch elements, pixel electrodes, and third lines. The circuit unit is provided in the peripheral region, and is electrically connected to one of the second lines and one of the third lines. The second substrate unit includes a second substrate and fourth lines. The display function layer is provided between the first and second substrate units. The drive element is provided on the peripheral region. At least a portion of the circuit unit is disposed between the drive element and the first substrate.
    Type: Application
    Filed: June 19, 2017
    Publication date: October 5, 2017
    Applicant: Japan Display Inc.
    Inventors: Hiroshi MIZUHASHI, Tadayoshi KATSUTA, Gen KOIDE, Toshiaki FUKUSHIMA
  • Publication number: 20170278472
    Abstract: According to one embodiment, a display device includes first interconnects, second interconnects, an electrode layer, pixel electrodes, a display layer and a controller. The first interconnects extend in a first direction and are arranged in a second direction. The second interconnects extend in the second direction and are arranged in the first direction. The electrode layer is aligned with a plane including the first and the second direction, and has openings. The second interconnects include a first signal line of a first color and a second signal line of the first color most proximal to the first signal line. The controller performs a first operation of supplying signals of a first polarity to the first and the second signal lines. The controller performs a second operation of supplying signals of a second polarity to the first and the second signal lines.
    Type: Application
    Filed: June 14, 2017
    Publication date: September 28, 2017
    Applicant: Japan Display Inc.
    Inventors: Toshiaki FUKUSHIMA, Hayato Kurasawa, Hiroshi Mizuhashi
  • Patent number: 9746950
    Abstract: A display device includes a sensor, a display panel, and a plurality of electrodes for a touch sensor. The plurality of electrodes include drive electrodes and detection electrodes. The drive electrodes are also used as common electrodes for display, which are provided in the display panel. An image display operation of the display panel and a driving operation of the electrodes for the touch sensor are performed in a time sharing manner. In the driving operation of the electrodes for the touch sensor, a code division multiplexing (CDM) drive is performed in units of successive common electrodes, and a drive signal which synchronizes with the CDM drive is input to all common electrodes other than successive common electrodes subjected to the CDM drive.
    Type: Grant
    Filed: June 3, 2015
    Date of Patent: August 29, 2017
    Assignee: Japan Display Inc.
    Inventors: Toshiaki Fukushima, Koji Noguchi, Hiroshi Mizuhashi, Gen Koide, Tadayoshi Katsuta
  • Publication number: 20170220153
    Abstract: A display apparatus which can reduce a parasitic capacitance during driving of driving electrodes based on a self-capacitance detecting method is provided. The display apparatus includes: a plurality of connection wires which are formed in a peripheral area and are connected to a plurality of corresponding video signal lines; a video signal line selection circuit which is connected with a plurality of connection wires, selects at least one connection wire and supplies a signal to the video signal lines; self-capacitance detection wires which extend in a direction intersecting an extension direction of the connection wires and intersects the connection wires; common wires which electrically connect the self-capacitance detection wires and drive electrodes; and transistors which are provided between the self-capacitance detection wires and the common wires. Further, the self-capacitance detection wires extend between a display area and the video signal line selection circuit in a plan view.
    Type: Application
    Filed: January 19, 2017
    Publication date: August 3, 2017
    Inventors: Gen KOIDE, Tadayoshi KATSUTA, Toshiaki FUKUSHIMA, Naoyuki OBINATA
  • Patent number: 9721519
    Abstract: According to one embodiment, a display device includes first interconnects, second interconnects, an electrode layer, pixel electrodes, a display layer and a controller. The first interconnects extend in a first direction and are arranged in a second direction. The second interconnects extend in the second direction and are arranged in the first direction. The electrode layer is aligned with a plane including the first and the second direction, and has openings. The second interconnects include a first signal line of a first color and a second signal line of the first color most proximal to the first signal line. The controller performs a first operation of supplying signals of a first polarity to the first and the second signal lines. The controller performs a second operation of supplying signals of a second polarity to the first and the second signal lines.
    Type: Grant
    Filed: April 20, 2015
    Date of Patent: August 1, 2017
    Assignee: Japan Display Inc.
    Inventors: Toshiaki Fukushima, Hayato Kurasawa, Hiroshi Mizuhashi
  • Publication number: 20170212624
    Abstract: A display apparatus includes a first pad electrically connected to the drive circuit, a voltage supply line having one end electrically connected to the first pad, a common wire electrically connected to the voltage supply line and the second electrode, a transistor formed between the voltage supply line and the common wire, and a branch wire being a part of the voltage supply line, extending from a branch section, and electrically connected to the first pad. Then, the branch section is located closer to a center of the insulating substrate than the first pad in a plan view.
    Type: Application
    Filed: January 17, 2017
    Publication date: July 27, 2017
    Inventors: Tadayoshi KATSUTA, Toshiaki FUKUSHIMA, Naoyuki OBINATA, Gen KOIDE
  • Patent number: 9715295
    Abstract: According to one embodiment, a display device includes first and second substrate units, a display function layer, and a drive element. The first substrate unit includes a first substrate, a display unit, and a circuit unit. The first substrate has a first surface including a display region and a peripheral region. The display unit is provided in the display region, and includes first lines, second lines, switch elements, pixel electrodes, and third lines. The circuit unit is provided in the peripheral region, and is electrically connected to one of the second lines and one of the third lines. The second substrate unit includes a second substrate and fourth lines. The display function layer is provided between the first and second substrate units. The drive element is provided on the peripheral region. At least a portion of the circuit unit is disposed between the drive element and the first substrate.
    Type: Grant
    Filed: May 11, 2015
    Date of Patent: July 25, 2017
    Assignee: Japan Display Inc.
    Inventors: Hiroshi Mizuhashi, Tadayoshi Katsuta, Gen Koide, Toshiaki Fukushima
  • Publication number: 20170205945
    Abstract: To provide a liquid crystal display device with a touch detection function in which any drive method can be adopted.
    Type: Application
    Filed: February 1, 2017
    Publication date: July 20, 2017
    Inventors: Hiroshi Mizuhashi, Koji Noguchi, Toshiaki Fukushima
  • Publication number: 20170186385
    Abstract: To reduce the area of a portion where a plurality of transistors are provided in a region around a display region and to reduce the area of the region around the display region, a display device includes a first transistor and a second transistor each as a transistor, and the transistor includes a connection wiring that electrically connects a semiconductor film and a source-drain electrode to each other via an opening portion provided in an insulating film. The first transistor and the second transistor are adjacent to each other, and there is a clearance between an end portion, on the side of the second transistor, of the connection wiring in the first transistor and an end portion, on the side of the second transistor, of the opening portion in the first transistor.
    Type: Application
    Filed: March 9, 2017
    Publication date: June 29, 2017
    Applicant: Japan Display Inc.
    Inventors: Gen KOIDE, Toshiaki FUKUSHIMA
  • Patent number: 9690259
    Abstract: Provided is an electronic timepiece, including: a step motor; a motor driver; a normal drive pulse generation circuit configured to output a normal drive pulse at a designated drive rank; a rotation detection pulse generation circuit configured to output a detection pulse; a rotation detection circuit which comprises at least a first detection mode determination circuit configured to conduct determination in a first detection mode and which is configured to detect rotation or non-rotation of a rotor; a rotation determination counter circuit configured to count a number of times that the rotation has been successively detected by the rotation detection circuit; a first detection mode determination counter circuit configured to count a number of times that a detection signal generated by the detection pulse becomes a predetermined detection pattern in the first detection mode; and a drive rank selection circuit configured to designate a drive rank of the normal drive pulse based on results of the counting condu
    Type: Grant
    Filed: August 29, 2014
    Date of Patent: June 27, 2017
    Assignee: CITIZEN WATCH CO., LTD.
    Inventors: Yu Takyo, Shogo Sezaki, Toshiaki Fukushima, Daisuke Iri
  • Patent number: 9651841
    Abstract: To reduce the area of a portion where a plurality of transistors are provided in a region around a display region and to reduce the area of the region around the display region, a display device includes a first transistor and a second transistor each as a transistor, and the transistor includes a connection wiring that electrically connects a semiconductor film and a source-drain electrode to each other via an opening portion provided in an insulating film. The first transistor and the second transistor are adjacent to each other, and there is a clearance between an end portion, on the side of the second transistor, of the connection wiring in the first transistor and an end portion, on the side of the second transistor, of the opening portion in the first transistor.
    Type: Grant
    Filed: March 11, 2016
    Date of Patent: May 16, 2017
    Assignee: Japan Display Inc.
    Inventors: Gen Koide, Toshiaki Fukushima
  • Patent number: 9594453
    Abstract: To provide a liquid crystal display device with a touch detection function in which any drive method can be adopted.
    Type: Grant
    Filed: June 17, 2015
    Date of Patent: March 14, 2017
    Assignee: Japan Display Inc.
    Inventors: Hiroshi Mizuhashi, Koji Noguchi, Toshiaki Fukushima
  • Patent number: 9529330
    Abstract: An oscillating stepping motor can reduce a required rotational angle of a rotor to drive a star wheel, reduce idle driving, cut the loss of energy required for the driving, reduce power consumption even in high-frequency driving, and stably operate. Two star wheels are located so that the tooth tips thereof are not engaged with each other. A rotor shaft includes a rotor pinion having two feed teeth at a certain aperture angle. One of the feed teeth feeds one of the driving wheels by oscillation of the rotor in one direction and the other of the feed teeth feeds the other of the driving wheels by the oscillation of the rotor in the other. The rotor then oscillates within a certain angle range, thereby sequentially rotating output gears in a certain direction by a certain angle.
    Type: Grant
    Filed: September 1, 2011
    Date of Patent: December 27, 2016
    Assignee: CITIZEN HOLDINGS CO., LTD.
    Inventors: Toshiaki Fukushima, Akira Shiota, Toshinari Maeda
  • Publication number: 20160357320
    Abstract: According to an aspect, a display device with a touch detection function includes a display panel and a touch panel. The touch panel includes first electrodes extending in one direction. The display panel includes second electrodes interesting with the first electrodes in planar view and serving as common electrodes that supply a common potential to pixels in a display area. The display panel also includes pixel signal lines and scanning signal lines interesting with each other in planar view. The pixel signal lines and the scanning signal lines are made into a floating state in a touch detection period in which a first drive signal is applied to the first electrodes, and a second drive signal is applied to the second electrodes at predetermined intervals to perform touch detection based on change in voltage of the first electrodes and change in voltage of the second electrodes.
    Type: Application
    Filed: June 1, 2016
    Publication date: December 8, 2016
    Inventors: Daisuke ITO, Koji NOGUCHI, Hidetoshi KOMATSU, Toshiaki FUKUSHIMA
  • Publication number: 20160349881
    Abstract: According to one embodiment, a display device comprises pixel electrodes formed in a display area, drive electrodes opposed to the pixel electrodes, first and second line groups formed in a non-display area, a first switch configured to apply a voltage for display or a drive signal to the drive electrodes, and a scanner configured to control the first switch. In the above structure, the first and second line groups are disposed with a space between the first line group and the second line group, and at least a part of the scanner is disposed in the space between the first line group and the second line group.
    Type: Application
    Filed: April 28, 2016
    Publication date: December 1, 2016
    Applicant: JAPAN DISPLAY INC.
    Inventors: TOSHIAKI FUKUSHIMA, HIROSHI MIZUHASHI
  • Publication number: 20160266451
    Abstract: To reduce the area of a portion where a plurality of transistors are provided in a region around a display region and to reduce the area of the region around the display region, a display device includes a first transistor and a second transistor each as a transistor, and the transistor includes a connection wiring that electrically connects a semiconductor film and a source-drain electrode to each other via an opening portion provided in an insulating film. The first transistor and the second transistor are adjacent to each other, and there is a clearance between an end portion, on the side of the second transistor, of the connection wiring in the first transistor and an end portion, on the side of the second transistor, of the opening portion in the first transistor.
    Type: Application
    Filed: March 11, 2016
    Publication date: September 15, 2016
    Applicant: Japan Display Inc.
    Inventors: Gen KOIDE, Toshiaki FUKUSHIMA
  • Publication number: 20160216695
    Abstract: Provided is an electronic timepiece, including: a step motor; a motor driver; a normal drive pulse generation circuit configured to output a normal drive pulse at a designated drive rank; a rotation detection pulse generation circuit configured to output a detection pulse; a rotation detection circuit which comprises at least a first detection mode determination circuit configured to conduct determination in a first detection mode and which is configured to detect rotation or non-rotation of a rotor; a rotation determination counter circuit configured to count a number of times that the rotation has been successively detected by the rotation detection circuit; a first detection mode determination counter circuit configured to count a number of times that a detection signal generated by the detection pulse becomes a predetermined detection pattern in the first detection mode; and a drive rank selection circuit configured to designate a drive rank of the normal drive pulse based on results of the counting condu
    Type: Application
    Filed: August 29, 2014
    Publication date: July 28, 2016
    Inventors: Yu TAKYO, Shogo SEZAKI, Toshiaki FUKUSHIMA, Daisuke IRI