Patents by Inventor Sheng-Guei Chang

Sheng-Guei Chang 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).

  • Microelectronic fabrication electrical test apparatus and method providing enhanced electrical test accuracy
    Patent number: 6590408
    Abstract: Within both an electrical test apparatus for electrically testing a substrate, and a method for electrically testing the substrate while employing the electrical test apparatus, there is provided for an automatic selection of an electrical test program, absent operator intervention, once having identified a substrate. Due to the absence of operator intervention, the substrate is more accurately electrically tested.
    Type: Grant
    Filed: May 29, 2002
    Date of Patent: July 8, 2003
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Yung-Min Cheng, Chun-Sheng Wang, Ming-Hui Lin, Sheng-Guei Chang, Juei-Feng Hsu