Patents by Inventor Yu-Chieh Fang

Yu-Chieh Fang 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: 8564524
    Abstract: A flat panel display comprises a display panel, a scan driving circuit and a control unit, wherein the display panel includes a plurality of scan lines. The scan driving circuit generates the first and the second scan signals to enable a portion of the scan lines. Furthermore, the control unit may enable a control signal every a predetermined duration according to these scan lines.
    Type: Grant
    Filed: September 19, 2008
    Date of Patent: October 22, 2013
    Assignee: Chunghwa Picture Tubes, Ltd.
    Inventors: Chang-Ching Tu, Yu-Chieh Fang
  • Patent number: 8305330
    Abstract: A gate driving circuit of a display panel including a plurality of shift register sets coupled in series is provided. Every shift register set includes a shift register unit and a transistor coupled therewith. The shift register units receive a gate timing signal and an inverted gate timing signal, and one of a first level shift register unit and a last level shift register unit further receives a threshold driving signal. The shift register units respectively output a plurality of gate driving signals sequentially according to the threshold driving signal, the gate timing signal and the inverted gate timing signal. A gate and a first source/drain of each transistor are coupled to receive a gate controlling signal, and a second source/drain of each transistor is coupled to the corresponding shift register unit to output one of the gate driving signals.
    Type: Grant
    Filed: October 21, 2009
    Date of Patent: November 6, 2012
    Assignee: Chunghwa Picture Tubes, Ltd.
    Inventors: Yu-Chieh Fang, Liang-Hua Yeh
  • Patent number: 8098222
    Abstract: A liquid-crystal-display (LCD) and a display panel thereof are provided. The display panel includes a plurality of pixel row units and a plurality of switch units. Each pixel row unit is connected between a scan line and a potential switch line. The first end of each switch unit receives the common voltage provided by the display panel, and the second end of each switch unit is connected to its corresponding potential switch line. Thus, not only the flicker-noise of the display panel is reduced, but also the display-quality of the LCD is promoted.
    Type: Grant
    Filed: November 8, 2007
    Date of Patent: January 17, 2012
    Assignee: Chunghwa Picture Tubes, Ltd.
    Inventors: Chang-Ching Tu, Yu-Chieh Fang
  • Patent number: 8085261
    Abstract: An LCD includes a PWB, a FPC, and a display panel. The PWB includes a level shift circuit and a power-off discharge circuit. The display panel includes a gate driving circuit and a TFT array. The power-off discharge circuit can electrically connects a gate high voltage end to a gate low voltage end so as to drive the gate driving circuit to turn on all TFTs of the TFT array.
    Type: Grant
    Filed: April 20, 2009
    Date of Patent: December 27, 2011
    Assignee: Chunghwa Picture Tubes, Ltd.
    Inventors: Yu-Chieh Fang, Liang-Hua Yeh
  • Publication number: 20110254818
    Abstract: A display including a control circuit, a first gate driver, a second gate driver, and pixel unit groups is provided. Each pixel unit group includes a first pixel unit, a second pixel unit, a third pixel unit and a fourth pixel unit. The control circuit provides a first start signal and a second start signal to the first gate driver and the second gate driver respectively. In a first frame period, the first start signal is provided, and then after a period, the second start signal is provided to drive the first pixel unit, the second pixel unit, the third pixel unit and the fourth pixel unit sequentially. In a second frame period, the second start signal is provided, and then after a period, the first start signal is provided to drive the second pixel unit, the first pixel unit, the fourth pixel unit and the third pixel unit sequentially.
    Type: Application
    Filed: June 7, 2010
    Publication date: October 20, 2011
    Applicant: CHUNGHWA PICTURE TUBES, LTD.
    Inventors: Yu-Chieh Fang, Liang-Hua Yeh
  • Publication number: 20110025658
    Abstract: A gate driving circuit of a display panel including a plurality of shift register sets coupled in series is provided. Every shift register set includes a shift register unit and a transistor coupled therewith. The shift register units receive a gate timing signal and an inverted gate timing signal, and one of a first level shift register unit and a last level shift register unit further receives a threshold driving signal. The shift register units respectively output a plurality of gate driving signals sequentially according to the threshold driving signal, the gate timing signal and the inverted gate timing signal. A gate and a first source/drain of each transistor are coupled to receive a gate controlling signal, and a second source/drain of each transistor is coupled to the corresponding shift register unit to output one of the gate driving signals.
    Type: Application
    Filed: October 21, 2009
    Publication date: February 3, 2011
    Applicant: CHUNGHWA PICTURE TUBES, LTD.
    Inventors: Yu-Chieh Fang, Liang-Hua Yeh
  • Publication number: 20100182305
    Abstract: An LCD includes a PWB, a FPC, and a display panel. The PWB includes a level shift circuit and a power-off discharge circuit. The display panel includes a gate driving circuit and a TFT array. The power-off discharge circuit can electrically connects a gate high voltage end to a gate low voltage end so as to drive the gate driving circuit to turn on all TFTs of the TFT array.
    Type: Application
    Filed: April 20, 2009
    Publication date: July 22, 2010
    Inventors: Yu-Chieh Fang, Liang-Hua Yeh
  • Publication number: 20100109995
    Abstract: The present invention provides a gate driving device utilized in an LCD device, wherein the LCD device includes a plurality of gate lines, and the gate driving device includes: a plurality of output buffer units, at least a first switch unit, a plurality of second switch units, and a control module. The gate driving device disclosed in the present invention can utilize charge sharing to reduce the power consumption, so as to attain the purpose of efficiently saving the power.
    Type: Application
    Filed: February 18, 2009
    Publication date: May 6, 2010
    Inventor: Yu-Chieh Fang
  • Publication number: 20090109197
    Abstract: A flat panel display comprises a display panel, a scan driving circuit and a control unit, wherein the display panel includes a plurality of scan lines. The scan driving circuit generates the first and the second scan signals to enable a portion of the scan lines. Furthermore, the control unit may enable a control signal every a predetermined duration according to these scan lines.
    Type: Application
    Filed: September 19, 2008
    Publication date: April 30, 2009
    Applicant: CHUNGHWA PICTURE TUBES, LTD.
    Inventors: Chang-Ching Tu, Yu-Chieh Fang
  • Publication number: 20080238853
    Abstract: A liquid-crystal-display (LCD) and a display panel thereof are provided. The display panel includes a plurality of pixel row units and a plurality of switch units. Each pixel row unit is connected between a scan line and a potential switch line. The first end of each switch unit receives the common voltage provided by the display panel, and the second end of each switch unit is connected to its corresponding potential switch line. Thus, not only the flicker-noise of the display panel is reduced, but also the display-quality of the LCD is promoted.
    Type: Application
    Filed: November 8, 2007
    Publication date: October 2, 2008
    Applicant: CHUNGHWA PICTURE TUBES, LTD.
    Inventors: Chang-Ching Tu, Yu-Chieh Fang