Patents by Inventor Tsan-Ming Hsieh

Tsan-Ming Hsieh 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: 8581822
    Abstract: A method for driving a liquid crystal display device provides sufficient charge time for a pixel unit by adjusting a main-charge time and a precharge time of the pixel unit according to the polarities of data driving signals applied during a main-charge period and a precharge period. Meanwhile, the method controls a write period during which a data driving signal is written into a pixel unit, so that each pixel unit can be equally charged.
    Type: Grant
    Filed: June 28, 2010
    Date of Patent: November 12, 2013
    Assignee: Chunghwa Picture Tubes, Ltd.
    Inventors: Hui-Ping Chuang, Yi-Jui Huang, Tsan-Ming Hsieh, Chun-Chieh Yu
  • Publication number: 20120223927
    Abstract: A liquid crystal display device and a method for driving the same are disclosed. The liquid crystal display device includes a liquid crystal panel and a driving circuit. The driving circuit includes a timing controller, a detection unit, a level shift circuit, a gate driver unit, and at least one source driver unit. The timing controller receives a frame rate and provides at least one gate turn-on signal and a source data writing signal for each of at least two different frame rates. The detecting unit detects the frame rate. The timing controller adjusts a duty cycle of the source data writing signal, so that the charge time is maintained to be substantially constant for any one of the different frame rates. Accordingly, a problem of flickering phenomenon can be avoided.
    Type: Application
    Filed: May 12, 2011
    Publication date: September 6, 2012
    Applicant: CHUNGHWA PICTURE TUBES, LTD.
    Inventors: Tsan-ming Hsieh, Yi-chiang Lai
  • Publication number: 20110221729
    Abstract: A method for driving a liquid crystal display device provides sufficient charge time for a pixel unit by adjusting a main-charge time and a precharge time of the pixel unit according to the polarities of data driving signals applied during a main-charge period and a precharge period. Meanwhile, the method controls a write period during which a data driving signal is written into a pixel unit, so that each pixel unit can be equally charged.
    Type: Application
    Filed: June 28, 2010
    Publication date: September 15, 2011
    Inventors: Hui-Ping Chuang, Yi-Jui Huang, Tsan-Ming Hsieh, Chun-Chieh Yu