Patents by Inventor Kazuhisa Kawamoto

Kazuhisa Kawamoto 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).

  • Liquid crystal display device and driving method therefor
    Patent number: 11967294
    Abstract: A common electrode driver includes an inverting amplifier including a first resistor, a second resistor, and an operational amplifier, and a resistance ratio adjustment circuit that adjusts, in accordance with a length of one horizontal scan period, a resistance ratio being a ratio of a resistance value of the second resistor to a resistance value of the first resistor. A feedback voltage is provided to one end of the first resistor. The resistance ratio adjustment circuit sets the resistance ratio when second driving is performed, in which a length of one horizontal scan period is a second time longer than a first time, to be smaller than the resistance ratio when first driving is performed, in which a length of one horizontal scan period is the first time.
    Type: Grant
    Filed: May 1, 2023
    Date of Patent: April 23, 2024
    Assignee: Sharp Display Technology Corporation
    Inventors: Masaki Uehata, Yasuki Mori, Kohji Saitoh, Takayuki Mizunaga, Kazuya Kondoh, Takashi Nojima, Kazuhisa Yoshimoto, Kosuke Kawamoto, Hiroyuki Kito, Kazuki Nakamichi
  • Wafer Support and Semiconductor Substrate Processing Method
    Publication number: 20080032040
    Abstract: To provide a wafer support and a semiconductor substrate processing method by which dopants released from a rear surface of a semiconductor substrate can be adequately restrained from reaching a top surface of a semiconductor substrate and a reaction gas can be restrained from reaching a rear surface of the semiconductor substrate.
    Type: Application
    Filed: November 9, 2004
    Publication date: February 7, 2008
    Inventors: Akira Okabe, Kazuhisa Kawamoto