Patents by Inventor David Cheng-Hsiung Chen

David Cheng-Hsiung Chen 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).

  • Bar circuit for an integrated circuit
    Patent number: 6555893
    Abstract: The present invention provides a bar circuit for reducing cross talk and eddy current of an integrated circuit. The bar circuit comprises a semiconductor substrate with a first conductivity type; a strip of first well with a second conductivity type in the semiconductor substrate; and a strip of second well with the second conductivity type in the semiconductor substrate. The strip of second well is located below and adjacent to the strip of first well, whereby forms a junction barrier for reducing the cross talk and the eddy current.
    Type: Grant
    Filed: January 25, 2002
    Date of Patent: April 29, 2003
    Assignee: United Microelectronics Corp.
    Inventors: David Cheng-Hsiung Chen, Joe Ko