Patents by Inventor Yan-Liang Li

Yan-Liang Li 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).

  • Shift register unit
    Patent number: 7564440
    Abstract: A shift register unit capable of generating two output pulses in turn. In the shift register unit, a first unit receives a start pulse and a clock signal to output a first output pulse during a first period. A second unit receives the first output pulse and an inverse signal of the clock signal to output a second output pulse during a second period.
    Type: Grant
    Filed: January 18, 2005
    Date of Patent: July 21, 2009
    Assignee: TPO Displays Corp.
    Inventor: Yan-Liang Li
  • Shift register unit
    Publication number: 20060158419
    Abstract: A shift register unit capable of generating two output pulses in turn. In the shift register unit, a first unit receives a start pulse and a clock signal to output a first output pulse during a first period. A second unit receives the first output pulse and an inverse signal of the clock signal to output a second output pulse during a second period.
    Type: Application
    Filed: January 18, 2005
    Publication date: July 20, 2006
    Inventor: Yan-Liang Li
  • Voltage controlled oscillator and electronic system using the same
    Patent number: 6943638
    Abstract: A voltage controlled oscillator comprises two XOR logic units and two inverters. A first inverter inverts a first XOR result into a first output signal; a second inverter inverts a second XOR result into a second output signal; a first XOR logic unit performs an XOR logic operation based on an input signal and the second output signal and thus generating the first XOR result; and a second XOR logic unit performs an XOR logic operation based on the first output signal and a reference voltage and thus generates the second XOR result.
    Type: Grant
    Filed: January 7, 2005
    Date of Patent: September 13, 2005
    Assignee: Toppoly Optoelectronics Corp.
    Inventor: Yan-Liang Li