Patents by Inventor Wai Yu Felix Wong

Wai Yu Felix Wong 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: 7400098
    Abstract: According to the present invention, a display driver includes a voltage and current source that drive pixels and compensate for parasitic voltage to produce row pixels having intensities that are relatively uncorrelated to the number of “ON” pixels in a given row. The voltage source that provides the pre-charge for each pixel includes a constant value and a compensation voltage determined based on the number of “ON” pixels in each row. The compensation voltage is also determined based on the characteristics of the diodes associated with each pixel and the resistance associated the common ground of each row.
    Type: Grant
    Filed: December 30, 2003
    Date of Patent: July 15, 2008
    Assignee: Solomon Systech Limited
    Inventors: Chung Yee Ricky Ng, Stephen Wai-Yan Lai, Wai Yu Felix Wong, Cheung Fai Lee
  • Patent number: 6501226
    Abstract: A driving system and its corresponding driving scheme for electroluminescence displays that employs the principle of electric charge conservation and recycling in order to reduce switching current requirement against the system power source. In an electroluminescence display of a matrix of electroluminescence elements arrayed in rows and columns, wherein anodes of the electroluminescence elements on each row being electrically connected to a corresponding anode line, and cathodes of the electroluminescence elements on each column being electrically connected to a corresponding cathode line, a driving system for driving said electroluminescence display comprises a row/column control circuit for lighting at least one of said electroluminescence elements by establishing an electrical route across the power source and the ground in a driving scheme. The driving scheme sequentially scans each of the cathode lines while simultaneously drives at least one of the anode lines during each scanning.
    Type: Grant
    Filed: February 12, 2001
    Date of Patent: December 31, 2002
    Assignee: Solomon Systech Limited
    Inventors: Wai-Yan Stephen Lai, Wah Chi Raymond Wang, Hing Kau Stephen Cheung, Wai Yu Felix Wong, Chung Yee Ricky Ng
  • Publication number: 20020097002
    Abstract: A driving system and its corresponding driving scheme for electroluminescence displays that employs the principle of electric charge conservation and recycling in order to reduce switching current requirement against the system power source. In an electroluminescence display of a matrix of electroluminescence elements arrayed in rows and columns, wherein anodes of the electroluminescence elements on each row being electrically connected to a corresponding anode line, and cathodes of the electroluminescence elements on each column being electrically connected to a corresponding cathode line, a driving system for driving said electroluminescence display comprises a row/column control circuit for lighting at least one of said electroluminescence elements by establishing an electrical route across the power source and the ground in a driving scheme. The driving scheme sequentially scans each of the cathode lines while simultaneously drives at least one of the anode lines during each scanning.
    Type: Application
    Filed: February 12, 2001
    Publication date: July 25, 2002
    Inventors: Wai-Yan Stephen Lai, Wah Chi Raymond Wang, Hing Kau Stephen Cheung, Wai Yu Felix Wong, Chung Yee Ricky Ng