Patents by Inventor Hun-Hsin Chang

Hun-Hsin 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).

  • Output ESD protection using dynamic-floating-gate arrangement
    Patent number: 6034552
    Abstract: A dynamic-floating-gate arrangement is used to improve the ESD robustness of driving-current-programmable CMOS output buffers in cell libraries, by suitably dynamically floating the gates of the NMOS/PMOS buffers using a small-dimension CMOS device having its drain connected to the gate of an unused CMOS buffer, its source connected to one of two voltage sources, and its gate connected between a resistance, that is connected between the two voltage sources, and a capacitance connected between the resistance and the same one of the two voltage sources as the source of the small-dimension CMOS device.
    Type: Grant
    Filed: April 30, 1998
    Date of Patent: March 7, 2000
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Hun-Hsin Chang, Ming-Dou Ker, Kuo-Tsai Lee, Wen-Hsiang Huang