Patents by Inventor Chi-Wen Su

Chi-Wen Su 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: 6033963
    Abstract: A method of forming a metal gate for a CMOS device using a replacement gate process wherein sidewall spacers are formed on a dummy electrode prior to forming the metal gate allowing source and drain formation prior to metal gate formation and a tungsten layer is selectively deposited to act as an each or CMP stop and to reduce source and drain resistance. The process begins by forming a dummy gate oxide layer and a polysilicon dummy gate electrode layer on a substrate structure and patterning them to form a dummy gate. Lightly doped source and drain regions are formed by ion implantation using the dummy gate as an implant mask. Spacers are formed on the sidewalls of the dummy gate. Source and drain regions are formed by implanting ions using,the dummy gate and spacers as an implant mask and performing a rapid thermal anneal. A tungsten layer is selectively deposited on the dummy gate electrode and the source and drain regions.
    Type: Grant
    Filed: August 30, 1999
    Date of Patent: March 7, 2000
    Assignee: Taiwan Semiconductor Manufacturing Company
    Inventors: Jenn Ming Huang, Chi-Wen Su, Chung-Cheng Wu, Shui-Hung Chen