Patents by Inventor Makoto Shibusawa

Makoto Shibusawa 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: 9685458
    Abstract: A display device includes a display region comprising a plurality of pixels, each pixel of the plurality of pixels comprises a light emitting element which includes a pixel electrode, a conductive layer below the pixel electrode and configured to receive a specified electric voltage, and a thin film transistor below the pixel electrode and the conductive layer, wherein the thin film transistor comprises a semiconductor layer which includes a channel region, a gate electrode which is overlapping the channel region, a first electrode electrically connected to the semiconductor layer and the pixel electrode, and a second electrode electrically connectable to a power supply line, wherein the conductive layer includes an overlapped region which overlaps with the channel region, and the first electrode extends so as to cover the gate electrode at the overlapped region.
    Type: Grant
    Filed: October 13, 2015
    Date of Patent: June 20, 2017
    Assignee: Japan Display Inc.
    Inventors: Hiroshi Tabatake, Hiroyuki Kimura, Makoto Shibusawa, Hiroshi Nakayama, Tetsuo Morita, Yutaka Umeda
  • Publication number: 20170097711
    Abstract: According to one embodiment, a lateral-electric-field liquid crystal display device includes a light-emitting display layer including OLEDs and a driving circuit controlling light emission of the OLEDs, a moisture impermeable film provided to be laminated on the light-emitting display layer to prevent infiltration of moisture into the light-emitting display layer, an optical substrate provided separately from the moisture impermeable film and subjecting light from the light-emitting display region to optical processing, a first touch electrode group serving as one electrode group of touch electrodes and provided on a back surface of the optical substrate, and an extraction electrode group formed to be laminated on the moisture impermeable film, the extraction electrode group and the optical substrate have an overlapping part in plan view, and electrodes of the first touch electrode group being electrically connected to electrodes of the extraction electrode group in the overlapping part.
    Type: Application
    Filed: December 14, 2016
    Publication date: April 6, 2017
    Applicant: JAPAN DISPLAY INC.
    Inventors: Yoshiro Aoki, Takashi Nakamura, Masahiro Tada, Hirotaka Hayashi, Makoto Shibusawa, Yutaka Umeda, Miyuki Ishikawa
  • Publication number: 20170097712
    Abstract: According to one embodiment, a lateral-electric-field liquid crystal display device includes a light-emitting display layer including OLEDs and a driving circuit controlling light emission of the OLEDs, a moisture impermeable film provided to be laminated on the light-emitting display layer to prevent infiltration of moisture into the light-emitting display layer, an optical substrate provided separately from the moisture impermeable film and subjecting light from the light-emitting display region to optical processing, a first touch electrode group serving as one electrode group of touch electrodes and provided on a back surface of the optical substrate, and an extraction electrode group formed to be laminated on the moisture impermeable film, the extraction electrode group and the optical substrate have an overlapping part in plan view, and electrodes of the first touch electrode group being electrically connected to electrodes of the extraction electrode group in the overlapping part.
    Type: Application
    Filed: December 14, 2016
    Publication date: April 6, 2017
    Applicant: JAPAN DISPLAY INC.
    Inventors: Yoshiro AOKI, Takashi Nakamura, Masahiro Tada, Hirotaka Hayashi, Makoto Shibusawa, Yutaka Umeda, Miyuki Ishikawa
  • Publication number: 20170084224
    Abstract: According to one embodiment, a display apparatus includes a plurality of semiconductor layers, a first insulation film, a first conductive layer, a second insulation film and a display element includes a second conductive layer. The first conductive layer and the second conductive layer are opposed to each other to form a capacitance unit.
    Type: Application
    Filed: November 30, 2016
    Publication date: March 23, 2017
    Applicant: Japan Display Inc.
    Inventors: Kazuyoshi OMATA, Hiroyuki KIMURA, Makoto SHIBUSAWA, Hiroshi TABATAKE
  • Patent number: 9547403
    Abstract: According to one embodiment, a lateral-electric-field liquid crystal display device includes a light-emitting display layer including OLEDs and a driving circuit controlling light emission of the OLEDs, a moisture impermeable film provided to be laminated on the light-emitting display layer to prevent infiltration of moisture into the light-emitting display layer, an optical substrate provided separately from the moisture impermeable film and subjecting light from the light-emitting display region to optical processing, a first touch electrode group serving as one electrode group of touch electrodes and provided on a back surface of the optical substrate, and an extraction electrode group formed to be laminated on the moisture impermeable film, the extraction electrode group and the optical substrate have an overlapping part in plan view, and electrodes of the first touch electrode group being electrically connected to electrodes of the extraction electrode group in the overlapping part.
    Type: Grant
    Filed: June 13, 2016
    Date of Patent: January 17, 2017
    Assignee: JAPAN DISPLAY INC.
    Inventors: Yoshiro Aoki, Takashi Nakamura, Masahiro Tada, Hirotaka Hayashi, Makoto Shibusawa, Yutaka Umeda, Miyuki Ishikawa
  • Patent number: 9542888
    Abstract: According to one embodiment, a display apparatus includes a plurality of semiconductor layers, a first insulation film, a first conductive layer, a second insulation film and a display element includes a second conductive layer. The first conductive layer and the second conductive layer are opposed to each other to form a capacitance unit.
    Type: Grant
    Filed: May 27, 2016
    Date of Patent: January 10, 2017
    Assignee: JAPAN DISPLAY INC.
    Inventors: Kazuyoshi Omata, Hiroyuki Kimura, Makoto Shibusawa, Hiroshi Tabatake
  • Patent number: 9542890
    Abstract: According to one embodiment, a display device includes a plurality of pixel units which each includes a light-emitting element and a pixel circuit, a plurality of first scan lines and second scan lines, a plurality of video signal lines, a controller which controls a scan line drive circuit and a signal line drive circuit, wherein the pixel circuit comprises an output switch, a drive transistor, a capacitance, and a pixel switch, wherein the controller controls a reset operation, a cancellation operation, a correction operation, and a light-emitting operation, and the controller deforms a waveform of a control signal which is supplied from the second scan line in a manner that a time of transitioning the pixel switch from an on-state to an off-state is longer than the time of transitioning by a non-deformed control signal, when writing the video voltage signal in the correction operation.
    Type: Grant
    Filed: November 26, 2014
    Date of Patent: January 10, 2017
    Assignee: Japan Display Inc.
    Inventors: Hiroshi Nakayama, Tetsuo Morita, Hiroyuki Kimura, Makoto Shibusawa
  • Patent number: 9495905
    Abstract: According to one embodiment, a display apparatus includes a plurality of pixels and a plurality of control lines. A pixel circuit of each of the pixels includes a driving transistor, an output switch, a pixel switch and a storage capacitance. A number of pixels PX of the plurality of pixels which are adjacent to one another in a column direction share the output switch.
    Type: Grant
    Filed: October 17, 2013
    Date of Patent: November 15, 2016
    Assignee: Japan Display Inc.
    Inventors: Kazuyoshi Omata, Hiroyuki Kimura, Makoto Shibusawa
  • Publication number: 20160291738
    Abstract: According to one embodiment, a lateral-electric-field liquid crystal display device includes a light-emitting display layer including OLEDs and a driving circuit controlling light emission of the OLEDs, a moisture impermeable film provided to be laminated on the light-emitting display layer to prevent infiltration of moisture into the light-emitting display layer, an optical substrate provided separately from the moisture impermeable film and subjecting light from the light-emitting display region to optical processing, a first touch electrode group serving as one electrode group of touch electrodes and provided on a back surface of the optical substrate, and an extraction electrode group formed to be laminated on the moisture impermeable film, the extraction electrode group and the optical substrate have an overlapping part in plan view, and electrodes of the first touch electrode group being electrically connected to electrodes of the extraction electrode group in the overlapping part.
    Type: Application
    Filed: June 13, 2016
    Publication date: October 6, 2016
    Applicant: JAPAN DISPLAY INC.
    Inventors: Yoshiro AOKI, Takashi Nakamura, Masahiro Tada, Hirotaka Hayashi, Makoto Shibusawa, Yutaka Umeda, Miyuki Ishikawa
  • Publication number: 20160275855
    Abstract: According to one embodiment, a display apparatus includes a plurality of semiconductor layers, a first insulation film, a first conductive layer, a second insulation film and a display element includes a second conductive layer. The first conductive layer and the second conductive layer are opposed to each other to form a capacitance unit.
    Type: Application
    Filed: May 27, 2016
    Publication date: September 22, 2016
    Applicant: JAPAN DISPLAY INC.
    Inventors: KAZUYOSHI OMATA, HIROYUKI KIMURA, MAKOTO SHIBUSAWA, HIROSHI TABATAKE
  • Publication number: 20160232841
    Abstract: A method of driving a display device with a plurality of pixels including a video signal wire, a first power supply wire supplied with a first potential, a second power supply wire supplied with a second potential different to the first potential, a light emitting element arranged between the first power supply wire and the second power supply wire, a drive transistor controlling a value of a current supplied to the light emitting element, and a switch arranged between the video signal wire and the drive transistor, and inputting a signal of the video signal wire to a gate terminal of the drive transistor, wherein a minimum gradation level potential is supplied to the video signal wire after a video signal is written to the capacitor of an Nth row pixel until a video signal is written to the capacitor of an Mth (N<M) row pixel.
    Type: Application
    Filed: February 4, 2016
    Publication date: August 11, 2016
    Inventors: Yutaka UMEDA, Duzen PENG, Ilin WU, Makoto SHIBUSAWA, Hiroyuki KIMURA
  • Publication number: 20160217736
    Abstract: A display device with a plurality of pixels including a video signal wire, a first power supply wire connecting via a first switch a first power supply outputting a first voltage and connecting via a second switch a second power supply outputting a second voltage different to the first voltage, a second power supply wire connecting a third power supply outputting a third voltage different to the first voltage and the second voltage, a light emitting element arranged between the first power supply wire and the second power supply wire, a drive transistor controlling a value of a current supplied to the light emitting element, and a third switch arranged between the video signal wire and the drive transistor, the first power supply wire becoming the second voltage in a first time period within 1 horizontal scanning period, and becoming the first voltage in a remaining second time period.
    Type: Application
    Filed: January 20, 2016
    Publication date: July 28, 2016
    Inventors: Hiroshi NAKAYAMA, Duzen PENG, Ilin WU, Makoto SHIBUSAWA
  • Patent number: 9383880
    Abstract: According to one embodiment, a lateral-electric-field liquid crystal display device includes a light-emitting display layer including OLEDs and a driving circuit controlling light emission of the OLEDs, a moisture impermeable film provided to be laminated on the light-emitting display layer to prevent infiltration of moisture into the light-emitting display layer, an optical substrate provided separately from the moisture impermeable film and subjecting light from the light-emitting display region to optical processing, a first touch electrode group serving as one electrode group of touch electrodes and provided on a back surface of the optical substrate, and an extraction electrode group formed to be laminated on the moisture impermeable film, the extraction electrode group and the optical substrate have an overlapping part in plan view, and electrodes of the first touch electrode group being electrically connected to electrodes of the extraction electrode group in the overlapping part.
    Type: Grant
    Filed: January 14, 2016
    Date of Patent: July 5, 2016
    Assignee: Japan Display Inc.
    Inventors: Yoshiro Aoki, Takashi Nakamura, Masahiro Tada, Hirotaka Hayashi, Makoto Shibusawa, Yutaka Umeda, Miyuki Ishikawa
  • Patent number: 9368058
    Abstract: According to one embodiment, a display apparatus includes a plurality of semiconductor layers, a first insulation film, a first conductive layer, a second insulation film and a display element includes a second conductive layer. The first conductive layer and the second conductive layer are opposed to each other to form a capacitance unit.
    Type: Grant
    Filed: October 17, 2013
    Date of Patent: June 14, 2016
    Assignee: Japan Display Inc.
    Inventors: Kazuyoshi Omata, Hiroyuki Kimura, Makoto Shibusawa, Hiroshi Tabatake
  • Publication number: 20160132159
    Abstract: According to one embodiment, a lateral-electric-field liquid crystal display device includes a light-emitting display layer including OLEDs and a driving circuit controlling light emission of the OLEDs, a moisture impermeable film provided to be laminated on the light-emitting display layer to prevent infiltration of moisture into the light-emitting display layer, an optical substrate provided separately from the moisture impermeable film and subjecting light from the light-emitting display region to optical processing, a first touch electrode group serving as one electrode group of touch electrodes and provided on a back surface of the optical substrate, and an extraction electrode group formed to be laminated on the moisture impermeable film, the extraction electrode group and the optical substrate have an overlapping part in plan view, and electrodes of the first touch electrode group being electrically connected to electrodes of the extraction electrode group in the overlapping part.
    Type: Application
    Filed: January 14, 2016
    Publication date: May 12, 2016
    Applicant: JAPAN DISPLAY INC.
    Inventors: Yoshiro AOKI, Takashi NAKAMURA, Masahiro TADA, Hirotaka HAYASHI, Makoto SHIBUSAWA, Yutaka UMEDA, Miyuki ISHIKAWA
  • Publication number: 20160104761
    Abstract: A display device includes a display region comprising a plurality of pixels, each pixel of the plurality of pixels comprises a light emitting element which includes a pixel electrode, a conductive layer below the pixel electrode and configured to receive a specified electric voltage, and a thin film transistor below the pixel electrode and the conductive layer, wherein the thin film transistor comprises a semiconductor layer which includes a channel region, a gate electrode which is overlapping the channel region, a first electrode electrically connected to the semiconductor layer and the pixel electrode, and a second electrode electrically connectable to a power supply line, wherein the conductive layer includes an overlapped region which overlaps with the channel region, and the first electrode extends so as to cover the gate electrode at the overlapped region.
    Type: Application
    Filed: October 13, 2015
    Publication date: April 14, 2016
    Inventors: Hiroshi TABATAKE, Hiroyuki KIMURA, Makoto SHIBUSAWA, Hiroshi NAKAYAMA, Tetsuo MORITA, Yutaka UMEDA
  • Publication number: 20160086543
    Abstract: A flash phenomenon of OLEDs at the time of power source ON of a display device is suppressed. The OLED emits light when reference potentials VSS and VDD are applied from power source lines to the OLED's cathode and anode respectively. While the anode can be connected to one of the power source line via a driving TFT and a lighting switch, a reset potential VRS can be applied to the anode via a reset switch and the driving TFT. The lighting switch is turned OFF and the reset switch and the driving TFT are turned ON so that VRS is applied to the anode, before starting the application of the reference potentials to the power source lines. Following this state, the application of the reference potentials to the power source lines starts, and thus a normal operation of allowing the OLED to emit light starts.
    Type: Application
    Filed: September 18, 2015
    Publication date: March 24, 2016
    Inventors: Tetsuo MORITA, Hiroyuki KIMURA, Makoto SHIBUSAWA, Hiroshi NAKAYAMA, Hiroshi TABATAKE, Yutaka UMEDA
  • Patent number: 9262030
    Abstract: According to one embodiment, a lateral-electric-field liquid crystal display device includes a light-emitting display layer including OLEDs and a driving circuit controlling light emission of the OLEDs, a moisture impermeable film provided to be laminated on the light-emitting display layer to prevent infiltration of moisture into the light-emitting display layer, an optical substrate provided separately from the moisture impermeable film and subjecting light from the light-emitting display region to optical processing, a first touch electrode group serving as one electrode group of touch electrodes and provided on a back surface of the optical substrate, and an extraction electrode group formed to be laminated on the moisture impermeable film, the extraction electrode group and the optical substrate have an overlapping part in plan view, and electrodes of the first touch electrode group being electrically connected to electrodes of the extraction electrode group in the overlapping part.
    Type: Grant
    Filed: October 3, 2014
    Date of Patent: February 16, 2016
    Assignee: Japan Display Inc.
    Inventors: Yoshiro Aoki, Takashi Nakamura, Masahiro Tada, Hirotaka Hayashi, Makoto Shibusawa, Yutaka Umeda, Miyuki Ishikawa
  • Publication number: 20150145902
    Abstract: According to one embodiment, a display device includes a plurality of pixel units which each includes a light-emitting element and a pixel circuit, a plurality of first scan lines and second scan lines, a plurality of video signal lines, a controller which controls a scan line drive circuit and a signal line drive circuit, wherein the pixel circuit comprises an output switch, a drive transistor, a capacitance, and a pixel switch, wherein the controller controls a reset operation, a cancellation operation, a correction operation, and a light-emitting operation, and the controller deforms a waveform of a control signal which is supplied from the second scan line in a manner that a time of transitioning the pixel switch from an on-state to an off-state is longer than the time of transitioning by a non-deformed control signal, when writing the video voltage signal in the correction operation.
    Type: Application
    Filed: November 26, 2014
    Publication date: May 28, 2015
    Applicant: Japan Display Inc.
    Inventors: Hiroshi NAKAYAMA, Tetsuo MORITA, Hiroyuki KIMURA, Makoto SHIBUSAWA
  • Publication number: 20150097810
    Abstract: According to one embodiment, a lateral-electric-field liquid crystal display device includes a light-emitting display layer including OLEDs and a driving circuit controlling light emission of the OLEDs, a moisture impermeable film provided to be laminated on the light-emitting display layer to prevent infiltration of moisture into the light-emitting display layer, an optical substrate provided separately from the moisture impermeable film and subjecting light from the light-emitting display region to optical processing, a first touch electrode group serving as one electrode group of touch electrodes and provided on a back surface of the optical substrate, and an extraction electrode group formed to be laminated on the moisture impermeable film, the extraction electrode group and the optical substrate have an overlapping part in plan view, and electrodes of the first touch electrode group being electrically connected to electrodes of the extraction electrode group in the overlapping part.
    Type: Application
    Filed: October 3, 2014
    Publication date: April 9, 2015
    Applicant: Japan Display Inc.
    Inventors: Yoshiro AOKI, Takashi NAKAMURA, Masahiro TADA, Hirotaka HAYASHI, Makoto SHIBUSAWA, Yutaka UMEDA, Miyuki ISHIKAWA