Patents by Inventor Yuan-Jing Chang

Yuan-Jing 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: 8629826
    Abstract: The present invention discloses a method for driving thin film transistor liquid crystal display (TFT-LCD) and the storage medium for storing computer program representative of the method thereof. The method utilizes a timing controller to send polarity control signals to a plurality of source drivers in a TFT-LCD panel for changing the polarity distribution of the liquid crystal molecules in the panel. The method is characterized by dynamically changing the positions of polarity inversion for alleviating the problem of undercharging under high resolution and high frequency conditions; utilizing both polar and reverse polar driving signals for solving the problem of color shift in “checker board” checking signals; and providing a mechanism for mending the problem of undercharging of the first horizontal line.
    Type: Grant
    Filed: April 8, 2010
    Date of Patent: January 14, 2014
    Assignee: Chunghwa Picture Tubes, Ltd.
    Inventors: Mu-Shan Liao, Yuan-Jing Chang, Hung-Chun Li
  • Publication number: 20110025664
    Abstract: The present invention discloses a method for driving thin film transistor liquid crystal display (TFT-LCD) and the storage medium for storing computer program representative of the method thereof. The method utilizes a timing controller to send polarity control signals to a plurality of source drivers in a TFT-LCD panel for changing the polarity distribution of the liquid crystal molecules in the panel. The method is characterized by dynamically changing the positions of polarity inversion for alleviating the problem of undercharging under high resolution and high frequency conditions; utilizing both polar and reverse polar driving signals for solving the problem of color shift in “checker board” checking signals; and providing a mechanism for mending the problem of undercharging of the first horizontal line.
    Type: Application
    Filed: April 8, 2010
    Publication date: February 3, 2011
    Inventors: Mu-Shan LIAO, Yuan-Jing Chang, Hung-Chun Li
  • Publication number: 20090189880
    Abstract: A source driving circuit is provided. The source driving circuit includes a plurality of source drivers, first switches, and second switches. Each transmission line of each source driver is coupled to the first switch and the second switch. In a first period, the first switches are turned on, and the source drivers generate a first driving signal to drive pixels in odd columns of a display panel through the transmission lines and the first switches. In a second period, the second switches are turned on, and the source drivers generate a second driving signal to drive pixels in even columns of the display panel through the transmission lines and the second switches. Therefore, the problem of the prior art that each transmission line of the source driver drives pixels in only one column of the display panel is improved and the hardware cost is greatly decreased.
    Type: Application
    Filed: July 22, 2008
    Publication date: July 30, 2009
    Applicant: CHUNGHWA PICTURE TUBES, LTD.
    Inventors: Hung-Chun Li, Mu-Shan Liao, Tung-Hsin Lan, Yuan-Jing Chang, Ming-Chang Lin
  • Patent number: 7262968
    Abstract: A device for dissipating a heat from addressing integrated circuits (addressing ICs) of a plasma display panel that uses a back plate which has a greater surface area, to dissipate the heat from the addressing integrated circuits directly. For embodiment of the device thereof, it provides a heat-conducting sheet attached on the addressing ICs to conduct the heat from the addressing ICs to the back plate rapidly, therefore increase the efficiency of the dissipation without add the volume of the plasma display panel.
    Type: Grant
    Filed: December 15, 2004
    Date of Patent: August 28, 2007
    Assignee: Chunghwa Picture Tubes, Ltd.
    Inventors: Yuan-Jing Chang, Po-Kun Hsieh, Pin-Hung Chou
  • Publication number: 20060126300
    Abstract: A device for dissipating a heat from addressing integrated circuits (addressing ICs) of a plasma display panel that uses a back plate which has a greater surface area, to dissipate the heat from the addressing integrated circuits directly. For embodiment of the device thereof, it provides a heat-conducting sheet attached on the addressing ICs to conduct the heat from the addressing ICs to the back plate rapidly, therefore increase the efficiency of the dissipation without add the volume of the plasma display panel.
    Type: Application
    Filed: December 15, 2004
    Publication date: June 15, 2006
    Inventors: Yuan-Jing Chang, Po-Kun Hsieh, Pin-Hung Chou