Patents by Inventor Kouichi Hashikaki

Kouichi Hashikaki 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: 11935485
    Abstract: A display device that includes a plurality of scanning lines, a plurality of data lines, and a pixel unit in which a pixel is specified by the scanning line and the data line, in which image data of one line is simultaneously displayed for a plurality of adjacent scanning lines, image data to be simultaneously displayed is made different between an N frame and an (N+1) frame that are temporally consecutive, and the image data is shifted by one line, and the image data of a last scanning line of at least one of the N frame or the (N+1) frame is hidden.
    Type: Grant
    Filed: December 7, 2020
    Date of Patent: March 19, 2024
    Assignee: Sony Semiconductor Solutions Corporation
    Inventors: Chiaki Kon, Noboru Tanigawa, Takafumi Nishioka, Kouichi Hashikaki, Toshinobu Sekiuchi
  • Publication number: 20230377521
    Abstract: Drive circuits and display devices with reduced power consumption are disclosed. In one example, a drive circuit includes a setting circuit configured to precharge, to a first voltage, a video signal line connected to a first transistor configured to sample a voltage of the video signal line, and an adjustment circuit configured to adjust a voltage of the video signal line by charging or discharging the video signal line precharged to the first voltage during a time period corresponding to a second voltage set in the video signal line.
    Type: Application
    Filed: August 3, 2023
    Publication date: November 23, 2023
    Inventor: Kouichi Hashikaki
  • Patent number: 11763750
    Abstract: The invention of the present application provides a drive circuit, a display device, and a drive method for reducing power consumption. A drive circuit of the present invention includes a setting circuit configured to precharge, to a first voltage, a video signal line connected to a first transistor configured to sample a voltage of the video signal line, and an adjustment circuit configured to adjust a voltage of the video signal line by charging or discharging the video signal line precharged to the first voltage during a time period corresponding to a second voltage set in the video signal line.
    Type: Grant
    Filed: March 18, 2021
    Date of Patent: September 19, 2023
    Assignee: Sony Semiconductor Solutions Corporation
    Inventor: Kouichi Hashikaki
  • Publication number: 20230095998
    Abstract: The invention of the present application provides a drive circuit, a display device, and a drive method for reducing power consumption. A drive circuit of the present invention includes a setting circuit configured to precharge, to a first voltage, a video signal line connected to a first transistor configured to sample a voltage of the video signal line, and an adjustment circuit configured to adjust a voltage of the video signal line by charging or discharging the video signal line precharged to the first voltage during a time period corresponding to a second voltage set in the video signal line.
    Type: Application
    Filed: March 18, 2021
    Publication date: March 30, 2023
    Inventor: Kouichi Hashikaki
  • Publication number: 20230030258
    Abstract: To improve display quality in a case where pixels are driven by using a ramp wave voltage.
    Type: Application
    Filed: January 19, 2021
    Publication date: February 2, 2023
    Inventors: SEIYA MATSUO, MASAKI YOSHIOKA, KOUICHI HASHIKAKI
  • Publication number: 20230020794
    Abstract: A display device that includes a plurality of scanning lines, a plurality of data lines, and a pixel unit in which a pixel is specified by the scanning line and the data line, in which image data of one line is simultaneously displayed for a plurality of adjacent scanning lines, image data to be simultaneously displayed is made different between an N frame and an (N+1) frame that are temporally consecutive, and the image data is shifted by one line, and the image data of a last scanning line of at least one of the N frame or the (N+1) frame is hidden.
    Type: Application
    Filed: December 7, 2020
    Publication date: January 19, 2023
    Inventors: Chiaki Kon, Noboru Tanigawa, Takafumi Nishioka, Kouichi Hashikaki, Toshinobu Sekiuchi
  • Patent number: 9747857
    Abstract: A display device includes: data-line pairs arranged side by side along a first direction; gate lines arranged side by side along a second direction; a display section including pixels each disposed at an intersection of a data-line pair and a gate line and connected to one or both of the data-line pair; a data-line drive circuit supplying a positive-phase data signal to one of the data-line pair and a negative-phase data signal to the other, and allowing the data-line pair to stay in a high-impedance state before writing of an image signal to the pixels; and a short circuit putting the data-line pair in a short-circuit state while the data-line pair stays in the high-impedance state, and then releasing the short-circuit state Following the release of the short-circuit state, the positive-phase data signal or/and the negative-phase data signal are written into the pixel as the image signal.
    Type: Grant
    Filed: April 24, 2015
    Date of Patent: August 29, 2017
    Assignee: Sony Corporation
    Inventors: Naoki Andou, Kouzi Tsukamoto, Takamitsu Urakawa, Kazuhiro Takeda, Keiko Kawaguchi, Taizou Hoshihara, Kouichi Hashikaki
  • Publication number: 20150235604
    Abstract: A display device includes: data-line pairs arranged side by side along a first direction; gate lines arranged side by side along a second direction; a display section including pixels each disposed at an intersection of a data-line pair and a gate line and connected to one or both of the data-line pair; a data-line drive circuit supplying a positive-phase data signal to one of the data-line pair and a negative-phase data signal to the other, and allowing the data-line pair to stay in a high-impedance state before writing of an image signal to the pixels; and a short circuit putting the data-line pair in a short-circuit state while the data-line pair stays in the high-impedance state, and then releasing the short-circuit state Following the release of the short-circuit state, the positive-phase data signal or/and the negative-phase data signal are written into the pixel as the mage signal.
    Type: Application
    Filed: April 24, 2015
    Publication date: August 20, 2015
    Inventors: Naoki Andou, Kouzi Tsukamoto, Takamitsu Urakawa, Kazuhiro Takeda, Keiko Kawaguchi, Taizou Hoshihara, Kouichi Hashikaki
  • Patent number: 9024922
    Abstract: A display device includes: data-line pairs arranged side by side along a first direction; gate lines arranged side by side along a second direction; a display section including pixels each disposed at an intersection of a data-line pair and a gate line and connected to one or both of the data-line pair; a data-line drive circuit supplying a positive-phase data signal to one of the data-line pair and a negative-phase data signal to the other, and allowing the data-line pair to stay in a high-impedance state before writing of an image signal to the pixels; and a short circuit putting the data-line pair in a short-circuit state while the data-line pair stays in the high-impedance state, and then releasing the short-circuit state Following the release of the short-circuit state, the positive-phase data signal or/and the negative-phase data signal are written into the pixel as the mage signal.
    Type: Grant
    Filed: September 12, 2012
    Date of Patent: May 5, 2015
    Assignee: Sony Corporation
    Inventors: Naoki Andou, Kouzi Tsukamoto, Takamitsu Urakawa, Kazuhiro Takeda, Keiko Kawaguchi, Taizou Hoshihara, Kouichi Hashikaki
  • Publication number: 20130076706
    Abstract: A display device includes: data-line pairs arranged side by side along a first direction; gate lines arranged side by side along a second direction; a display section including pixels each disposed at an intersection of a data-line pair and a gate line and connected to one or both of the data-line pair; a data-line drive circuit supplying a positive-phase data signal to one of the data-line pair and a negative-phase data signal to the other, and allowing the data-line pair to stay in a high-impedance state before writing of an image signal to the pixels; and a short circuit putting the data-line pair in a short-circuit state while the data-line pair stays in the high-impedance state, and then releasing the short-circuit state Following the release of the short-circuit state, the positive-phase data signal or/and the negative-phase data signal are written into the pixel as the mage signal.
    Type: Application
    Filed: September 12, 2012
    Publication date: March 28, 2013
    Applicant: SONY CORPORATION
    Inventors: Naoki Andou, Kouzi Tsukamoto, Takamitsu Urakawa, Kazuhiro Takeda, Keiko Kawaguchi, Taizou Hoshihara, Kouichi Hashikaki