Patents by Inventor Sou-Chieh Chang

Sou-Chieh Chang 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: 11120772
    Abstract: A source driving circuit, a display apparatus and an operation method are provided. The source driving circuit includes a reference voltage generating circuit, a plurality of compensation circuits, a gamma voltage generating circuit and a digital to analog converter. The reference voltage generating circuit is configured to generate a plurality of gamma reference voltages. The plurality of compensation circuits are coupled to the reference voltage generating circuit and configured to generate a plurality of compensated gamma reference voltages according to the plurality of gamma reference voltages and a voltage associated with a common voltage. The gamma voltage generating circuit is configured to generate a plurality of gamma voltages according to the plurality of compensated gamma reference voltages. The digital to analog converter is configured to generate a plurality of data driving voltages corresponding to image data according to the plurality of gamma voltages.
    Type: Grant
    Filed: April 13, 2020
    Date of Patent: September 14, 2021
    Assignee: NOVATEK Microelectronics Corp.
    Inventors: Cheng-Tsu Hsieh, Sou-Chieh Chang, Ying-Hsiang Wang
  • Patent number: 9183801
    Abstract: A source driver apparatus configured to drive a display panel is provided. The source driver apparatus includes a data operation circuit and a pixel driving circuit. The data operation circuit is configured to receive pixel data and perform a polarity determination operation on the pixel data to determine a polarity distribution information of pixels on the display panel. The pixel driving circuit is coupled to the data operation circuit. The pixel driving circuit is configured to drive the display panel according to the pixel data and the polarity distribution information. Furthermore, a driving method of the display panel is also provided.
    Type: Grant
    Filed: September 4, 2013
    Date of Patent: November 10, 2015
    Assignee: Novatek Microelectronics Corp.
    Inventors: Sou-Chieh Chang, Shun-Hsun Yang, Tse-Hung Wu
  • Publication number: 20150009250
    Abstract: A multiple polarity inversion driving method is provided, capable of being operated in a number of inversion schemes, and being flexibly adjusted in accordance with different design requirements and application conditions. The driving method includes providing display data in accordance with an inversion switching time unit as a repeated time unit. The inversion switching time unit has a number of different types of polarity distribution pattern intervals. Additionally, the display data provided to the different types of polarity distribution pattern intervals respectively have different types of polarity distribution patterns on the display.
    Type: Application
    Filed: September 23, 2014
    Publication date: January 8, 2015
    Applicant: NOVATEK MICROELECTRONICS CORP.
    Inventors: Tse-Hung WU, Sou-Chieh CHANG
  • Publication number: 20140368553
    Abstract: A source driver apparatus configured to drive a display panel is provided. The source driver apparatus includes a data operation circuit and a pixel driving circuit. The data operation circuit is configured to receive pixel data and perform a polarity determination operation on the pixel data to determine a polarity distribution information of pixels on the display panel. The pixel driving circuit is coupled to the data operation circuit. The pixel driving circuit is configured to drive the display panel according to the pixel data and the polarity distribution information. Furthermore, a driving method of the display panel is also provided.
    Type: Application
    Filed: September 4, 2013
    Publication date: December 18, 2014
    Applicant: NOVATEK MICROELECTRONICS CORP.
    Inventors: Sou-Chieh Chang, Shun-Hsun Yang, Tse-Hung Wu
  • Publication number: 20120200553
    Abstract: A multiple polarity inversion driving method is provided, capable of being operated in a number of inversion schemes, and being flexibly adjusted in accordance with different design requirements and application conditions. The driving method includes providing display data in accordance with an inversion switching time unit as a repeated time unit. The inversion switching time unit has a number of different types of polarity distribution pattern intervals. Additionally, the display data provided to the different types of polarity distribution pattern intervals respectively have different types of polarity distribution patterns on the display.
    Type: Application
    Filed: October 27, 2011
    Publication date: August 9, 2012
    Applicant: NOVATECK MICROELECTRONICS CORP.
    Inventors: Tse-Hung WU, Sou-Chieh Chang