Patents by Inventor Yoshihisa Ooishi

Yoshihisa Ooishi 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: 10621937
    Abstract: A display device includes data lines extending in a first direction, gate lines extending in a second direction, a source driver that supplies a data signal to the data lines, a gate driver that supplies a gate signal to the gate lines, and a timing controller that determines scan order of the gate lines and outputs image data to the source driver based on the scan order. The timing controller determines the scan order of the gate lines based on an input image corresponding to input image data input from an outside, and switches first scan order and second scan order in each frame, the first scan order and the second scan order being different from each other in the scan order.
    Type: Grant
    Filed: May 18, 2018
    Date of Patent: April 14, 2020
    Assignee: Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Hideyuki Nakanishi, Yoshihisa Ooishi
  • Patent number: 10559271
    Abstract: A liquid crystal display device that performs phase inversion drive in which a phase of a polarity of a data voltage is inverted in predetermined timing while performing frame inversion drive in which a positive-polarity data voltage and a negative-polarity data voltage are alternately output to a data line in each one or plurality of frames. In a first frame immediately after the phase is inverted, the source driver outputs a second data voltage to the data line in initial first periods of a horizontal scanning period, the second data voltage being closer to the common voltage than a first data voltage corresponding to input image data, and outputs the first data voltage to the data line in a second period after the first period in the horizontal scanning period.
    Type: Grant
    Filed: July 2, 2019
    Date of Patent: February 11, 2020
    Assignee: Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Hideyuki Noguchi, Toshiki Onishi, Yoshihisa Ooishi
  • Publication number: 20190371221
    Abstract: A display device comprising: source lines; gate lines; selection transistors in each of which a first conduction electrode is electrically connected to each of the gate lines; selection signal supply lines each electrically connected to the control electrode of at least two of the selection transistors; gate voltage supply lines each connected to the second conduction electrode of at least two of the selection transistors; a gate driver electrically connected to the selection signal supply lines and the gate voltage supply lines; failure detection transistors in each of which a control electrode is electrically connected to each of the gate lines; monitor input signal lines each electrically connected the first conduction electrode of at least two of the failure detection transistors; and monitor output signal lines each electrically connected to the second conduction electrode of at least two of the failure detection transistors.
    Type: Application
    Filed: August 16, 2019
    Publication date: December 5, 2019
    Inventors: Hiroaki GOTO, Masafumi HIRATA, Nagatoshi KURAHASHI, Yoshihisa OOISHI
  • Publication number: 20190325833
    Abstract: A liquid crystal display device that performs phase inversion drive in which a phase of a polarity of a data voltage is inverted in predetermined timing while performing frame inversion drive in which a positive-polarity data voltage and a negative-polarity data voltage are alternately output to a data line in each one or plurality of frames. In a first frame immediately after the phase is inverted, the source driver outputs a second data voltage to the data line in initial first periods of a horizontal scanning period, the second data voltage being closer to the common voltage than a first data voltage corresponding to input image data, and outputs the first data voltage to the data line in a second period after the first period in the horizontal scanning period.
    Type: Application
    Filed: July 2, 2019
    Publication date: October 24, 2019
    Inventors: Hideyuki NOGUCHI, Toshiki ONISHI, Yoshihisa OOISHI
  • Patent number: 10453407
    Abstract: A display apparatus includes an image display region having pixels sectioned by scanning signal lines and video signal lines, scanning connecting lines, thin film transistors, selection signal lines connected to gate electrodes of the thin film transistors, plural ones of the thin film transistors connected to different ones of the scanning connecting lines being connected to one of the selection signal lines; and a scanning signal drive circuit. The scanning signal drive circuit performs a normal scanning mode in which pulse signals are supplied in turn to plural ones of the scanning connecting lines connected to the one of the selection signal lines, and in the normal scanning mode, a fall timing of the gate-on voltage differs from a fall timing of a last one of the pulse signals supplied to the plural ones of the scanning connecting lines during the selection period.
    Type: Grant
    Filed: July 31, 2018
    Date of Patent: October 22, 2019
    Assignee: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.
    Inventors: Yoshihisa Ooishi, Genshiro Kawachi, Kazuo Kita, Toshikazu Koudo, Hideyuki Nakanishi
  • Patent number: 10388236
    Abstract: A liquid crystal display device that performs phase inversion drive in which a phase of a polarity of a data voltage is inverted in predetermined timing while performing frame inversion drive in which a positive-polarity data voltage and a negative-polarity data voltage are alternately output to a data line in each one or plurality of frames. In a first frame immediately after the phase is inverted, the source driver outputs a second data voltage to the data line in initial first periods of a horizontal scanning period, the second data voltage being closer to the common voltage than a first data voltage corresponding to input image data, and outputs the first data voltage to the data line in a second period after the first period in the horizontal scanning period.
    Type: Grant
    Filed: March 29, 2017
    Date of Patent: August 20, 2019
    Assignee: Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Hideyuki Noguchi, Toshiki Onishi, Yoshihisa Ooishi
  • Patent number: 10249257
    Abstract: A display device comprises: data lines extending in a first direction; gate lines extending in a second direction, and being divided into groups each of which has the gate lines adjacent in the first direction; selection signal supplying wirings each of which is provided in each group, and connected to each control electrode of the selector transistors corresponding to the group; gate voltage supplying wirings connected to the other conductive electrode of each of the selector transistors corresponding to the group; and wherein a gate driver supplies a second gate voltage having a voltage level lower than that of a first gate voltage to at least one of the gate voltage supplying wirings in each of the groups before supplying the first gate voltage in order to turn on a pixel transistor disposed in an intersection portion of the data line and the gate line.
    Type: Grant
    Filed: September 29, 2016
    Date of Patent: April 2, 2019
    Assignee: Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Yoshihisa Ooishi, Daisuke Kajita, Genshiro Kawachi, Sachiko Yamazaki, Kuniaki Amano
  • Patent number: 10147375
    Abstract: A display apparatus includes an image display region having pixels sectioned by scanning signal lines and video signal lines, scanning connecting lines, thin film transistors, selection signal lines connected to gate electrodes of the thin film transistors, plural ones of the thin film transistors connected to different ones of the scanning connecting lines being connected to one of the selection signal lines; and a scanning signal drive circuit. The scanning signal drive circuit performs a normal scanning mode in which pulse signals are supplied in turn to plural ones of the scanning connecting lines connected to the one of the selection signal lines, and in the normal scanning mode, a fall timing of the gate-on voltage differs from a fall timing of a last one of the pulse signals supplied to the plural ones of the scanning connecting lines during the selection period.
    Type: Grant
    Filed: May 20, 2016
    Date of Patent: December 4, 2018
    Assignee: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.
    Inventors: Yoshihisa Ooishi, Genshiro Kawachi, Kazuo Kita, Toshikazu Koudo, Hideyuki Nakanishi
  • Publication number: 20180342218
    Abstract: A display apparatus includes an image display region having pixels sectioned by scanning signal lines and video signal lines, scanning connecting lines, thin film transistors, selection signal lines connected to gate electrodes of the thin film transistors, plural ones of the thin film transistors connected to different ones of the scanning connecting lines being connected to one of the selection signal lines; and a scanning signal drive circuit. The scanning signal drive circuit performs a normal scanning mode in which pulse signals are supplied in turn to plural ones of the scanning connecting lines connected to the one of the selection signal lines, and in the normal scanning mode, a fall timing of the gate-on voltage differs from a fall timing of a last one of the pulse signals supplied to the plural ones of the scanning connecting lines during the selection period.
    Type: Application
    Filed: July 31, 2018
    Publication date: November 29, 2018
    Inventors: Yoshihisa OOISHI, Genshiro KAWACHI, Kazuo KITA, Toshikazu KOUDO, Hideyuki NAKANISHI
  • Publication number: 20180268770
    Abstract: A display device includes data lines extending in a first direction, gate lines extending in a second direction, a source driver that supplies a data signal to the data lines, a gate driver that supplies a gate signal to the gate lines, and a timing controller that determines scan order of the gate lines and outputs image data to the source driver based on the scan order. The timing controller determines the scan order of the gate lines based on an input image corresponding to input image data input from an outside, and switches first scan order and second scan order in each frame, the first scan order and the second scan order being different from each other in the scan order.
    Type: Application
    Filed: May 18, 2018
    Publication date: September 20, 2018
    Inventors: Hideyuki NAKANISHI, Yoshihisa OOISHI
  • Patent number: 10074331
    Abstract: A display device includes an image display area that includes pixels sectioned by scanning signal lines and video signal lines, first scanning connection lines connected to scanning signal lines, first thin film transistors, first selection signal lines, second thin film transistors, second selection signal lines, and a scanning signal drive circuit connected to the first scanning connection lines, the first selection signal lines, and the second selection signal lines, wherein the scanning signal drive circuit sequentially supplies a pulse signal to the first scanning connection lines in a selection period in which a gate-on voltage is applied to the one of the first selection signal lines, and the scanning signal drive circuit applies a gate-off voltage to the one of the second selection signal lines corresponding to the one of the first selection signal lines to which the gate-on voltage is applied.
    Type: Grant
    Filed: May 19, 2016
    Date of Patent: September 11, 2018
    Assignee: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.
    Inventors: Genshiro Kawachi, Kazuo Kita, Yoshihisa Ooishi, Hideyuki Nakanishi, Toshikazu Koudo
  • Publication number: 20170287420
    Abstract: A liquid crystal display device that performs phase inversion drive in which a phase of a polarity of a data voltage is inverted in predetermined timing while performing frame inversion drive in which a positive-polarity data voltage and a negative-polarity data voltage are alternately output to a data line in each one or plurality of frames. In a first frame immediately after the phase is inverted, the source driver outputs a second data voltage to the data line in initial first periods of a horizontal scanning period, the second data voltage being closer to the common voltage than a first data voltage corresponding to input image data, and outputs the first data voltage to the data line in a second period after the first period in the horizontal scanning period.
    Type: Application
    Filed: March 29, 2017
    Publication date: October 5, 2017
    Inventors: Hideyuki NOGUCHI, Toshiki ONISHI, Yoshihisa OOISHI
  • Publication number: 20170092219
    Abstract: A display device comprises: data lines extending in a first direction; gate lines extending in a second direction, and being divided into groups each of which has the gate lines adjacent in the first direction; selection signal supplying wirings each of which is provided in each group, and connected to each control electrode of the selector transistors corresponding to the group; gate voltage supplying wirings connected to the other conductive electrode of each of the selector transistors corresponding to the group; and wherein a gate driver supplies a second gate voltage having a voltage level lower than that of a first gate voltage to at least one of the gate voltage supplying wirings in each of the groups before supplying the first gate voltage in order to turn on a pixel transistor disposed in an intersection portion of the data line and the gate line.
    Type: Application
    Filed: September 29, 2016
    Publication date: March 30, 2017
    Inventors: Yoshihisa OOISHI, Daisuke KAJITA, Genshiro KAWACHI, Sachiko YAMAZAKI, Kuniaki AMANO
  • Publication number: 20160267866
    Abstract: A display apparatus includes an image display region having pixels sectioned by scanning signal lines and video signal lines, scanning connecting lines, thin film transistors, selection signal lines connected to gate electrodes of the thin film transistors, plural ones of the thin film transistors connected to different ones of the scanning connecting lines being connected to one of the selection signal lines; and a scanning signal drive circuit. The scanning signal drive circuit performs a normal scanning mode in which pulse signals are supplied in turn to plural ones of the scanning connecting lines connected to the one of the selection signal lines, and in the normal scanning mode, a fall timing of the gate-on voltage differs from a fall timing of a last one of the pulse signals supplied to the plural ones of the scanning connecting lines during the selection period.
    Type: Application
    Filed: May 20, 2016
    Publication date: September 15, 2016
    Inventors: Yoshihisa OOISHI, Genshiro KAWACHI, Kazuo KITA, Toshikazu KOUDO, Hideyuki NAKANISHI
  • Publication number: 20160267869
    Abstract: A display device includes an image display area that includes pixels sectioned by scanning signal lines and video signal lines, first scanning connection lines connected to scanning signal lines, first thin film transistors, first selection signal lines, second thin film transistors, second selection signal lines, and a scanning signal drive circuit connected to the first scanning connection lines, the first selection signal lines, and the second selection signal lines, wherein the scanning signal drive circuit sequentially supplies a pulse signal to the first scanning connection lines in a selection period in which a gate-on voltage is applied to the one of the first selection signal lines, and the scanning signal drive circuit applies a gate-off voltage to the one of the second selection signal lines corresponding to the one of the first selection signal lines to which the gate-on voltage is applied.
    Type: Application
    Filed: May 19, 2016
    Publication date: September 15, 2016
    Inventors: Genshiro KAWACHI, Kazuo KITA, Yoshihisa OOISHI, Hideyuki NAKANISHI, Toshikazu KOUDO
  • Patent number: 9390662
    Abstract: A liquid crystal display device includes: a liquid crystal display unit that displays, for each of frames, an image based on an input image signal; a drive unit that applies a voltage based on the input image signal to pixels of the liquid crystal display unit; and a control unit that controls an amplitude of the voltage applied to the pixels. The drive unit applies, in one of the frames, a voltage of the same polarity to the pixels connected to one of the source signal lines. The control unit includes: a temperature-information acquiring unit that acquires temperature information of the drive unit; and a filter unit that acquires high-frequency and low-frequency components of the input image signal in a substantial extending direction of the source signal lines. The control unit controls the amplitude of the applied voltage using the temperature information and an output value of the high-frequency component.
    Type: Grant
    Filed: December 21, 2012
    Date of Patent: July 12, 2016
    Assignee: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.
    Inventors: Takahiro Kobayashi, Yoshio Umeda, Hideki Abe, Takayuki Tajiri, Yoshihisa Ooishi, Shinji Yasukawa
  • Patent number: 9251749
    Abstract: In the case where the gray-scale value of the pixel X is the minimum gray-scale value, the data line driving circuit (4) outputs a video signal having a voltage obtained by correcting the positive polarity minimum gray-scale voltage corresponding to the minimum gray-scale value only when outputting a positive polarity video signal. In the above, the data line driving circuit (4) outputs the video signal having the voltage obtained by correcting the positive polarity minimum gray-scale voltage, using a voltage correction amount larger than that which is used in outputting the video signal having the voltage obtained by correcting the positive polarity gray-scale voltage corresponding to the intermediate gray-scale value.
    Type: Grant
    Filed: February 10, 2012
    Date of Patent: February 2, 2016
    Assignee: Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Junichi Maruyama, Ryutaro Oke, Yoshihisa Ooishi
  • Patent number: 9236018
    Abstract: A display device includes a display portion having gate and source signal lines, and a plurality of pixels, a gate driver that outputs gate signals, a source driver that outputs source signals, and a controller that causes the display portion to display an image at a frame frequency. The controller sets the frame frequency to a first frame frequency F1 when the image is a moving picture, and the controller sets the frame frequency to a second frame frequency F2 lower than F1 when the image is a still picture. The gate driver outputs the gate signals to the gate signal lines in an aligned order of gate signal lines in a second direction when the frame frequency is F1, and the gate driver outputs the gate signals to the gate signal lines in different order from the array order when the frame frequency is F2.
    Type: Grant
    Filed: February 7, 2014
    Date of Patent: January 12, 2016
    Assignee: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.
    Inventors: Hideyuki Nakanishi, Yoshihisa Ooishi, Sachiko Yamazaki
  • Patent number: 9111504
    Abstract: A liquid crystal display device which includes one image signal line which is connected to a plurality of pixels, a scanning line drive part which outputs an ON voltage to the respective pixels in a predetermined order, and a data line drive part which outputs image signal voltages. The data line drive part outputs a gray level signal voltage corresponding to a gray level value of the pixel as an image signal voltage in a first period, and outputs a correction gray level signal voltage different from the gray level signal voltage as an image signal voltage in a second period which precedes the first period. The liquid crystal display device further includes a control part which generates the correction gray level signal voltage based on the gray level value of the pixel and one or plurality of gray level values of pixels which precede the pixel in order.
    Type: Grant
    Filed: April 28, 2014
    Date of Patent: August 18, 2015
    Assignees: JAPAN DISPLAY INC., PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.
    Inventors: Yoshihisa Ooishi, Masato Ishii, Junichi Maruyama, Goki Toshima
  • Patent number: 9105254
    Abstract: A data line driving section (6) outputs a video signal voltage for each pixel to a data line (DL) for each predetermined period in order. In outputting a video signal voltage for a pixel, the data line driving section (6) outputs a gradation signal voltage having a voltage corresponding to a gradation value of the pixel as the video signal voltage during a second part of the predetermined period, and outputs a correction gradation signal voltage different from the gradation signal voltage as the video signal voltage during a first part of the predetermined period. A control section (4) changes a relationship between the correction gradation signal voltage and the gradation signal voltage based on a combination of the gradation value of the pixel and a gradation value of a pixel preceding the pixel.
    Type: Grant
    Filed: August 26, 2014
    Date of Patent: August 11, 2015
    Assignees: JAPAN DISPLAY INC., PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.
    Inventors: Yoshihisa Ooishi, Misa Owa, Junichi Maruyama, Goki Toshima