Patents by Inventor Wei-Chen Fu

Wei-Chen Fu 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).

  • Integrated circuit for driving high-voltage LED lamp
    Patent number: 8305005
    Abstract: An integrated circuit for driving high-voltage LED lamps is applied to a rectified alternative current (AC) power and a plurality of LED stacks. The integrated circuit includes a control unit, a plurality of current-clamping units which electrically connect to the control unit and the LED stacks respectively, and a plurality of current-sensing units which electrically connect to the current-clamping units and the control unit. When the rectified power is switched on, the current-sensing unit constantly monitors the electrical current flowing through the respective current-clamping unit and feeds back the monitored data to the control unit. The control unit sequentially switches on or off the current-clamping units according to the combinatorial logic state of the monitored data.
    Type: Grant
    Filed: September 8, 2010
    Date of Patent: November 6, 2012
    Assignee: Integrated Crystal Technology Inc.
    Inventors: Wei-Chen Fu, Wei-Chen Liang, Wen-Cen Li, Bo-Wen Hou, Ching-Sung Lo
  • INTEGRATED CIRCUIT FOR DRIVING HIGH-VOLTAGE LED LAMP
    Publication number: 20120056559
    Abstract: An integrated circuit for driving high-voltage LED lamps is applied to a rectified alternative current (AC) power and a plurality of LED stacks. The integrated circuit includes a control unit, a plurality of current-clamping units which electrically connect to the control unit and the LED stacks respectively, and a plurality of current-sensing units which electrically connect to the current-clamping units and the control unit. When the rectified power is switched on, the current-sensing unit constantly monitors the electrical current flowing through the respective current-clamping unit and feeds back the monitored data to the control unit. The control unit sequentially switches on or off the current-clamping units according to the combinatorial logic state of the monitored data.
    Type: Application
    Filed: September 8, 2010
    Publication date: March 8, 2012
    Inventors: Wei-Chen FU, Wei-Chen Liang, Wen-Cen Li, Bo-Wen Hou, Ching-Sung Lo