Patents by Inventor Fu T. Liou

Fu T. Liou 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).

  • Input protection for an integrated circuit
    Patent number: 4802054
    Abstract: An integrated circuit has an input protection circuit coupled between an input pad and an input circuit. The input pad receives a signal provided externally from the integrated circuit. The input circuit is responsive to the signal provided externally from the integrated circuit. The input protection circuit provides protection against electrostatic discharge (ESD). The input protection circuit includes two polysilicon resistors in parallel in which one has a greater width than the other. The greater width resistor will be the first to open under ESD stress leaving the other resistor to still provide a signal path between the input pad and the input circuit.
    Type: Grant
    Filed: March 13, 1987
    Date of Patent: January 31, 1989
    Assignee: Motorola, Inc.
    Inventors: Ruey J. Yu, Fu T. Liou