Patents by Inventor Di-Son Kwo

Di-Son Kwo 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: 6110782
    Abstract: A method for integrating salicide and high voltage device processes in the fabrication of high and low voltage devices on a single wafer is described. Isolation areas are formed on a semiconductor substrate surrounding and electrically isolating a low voltage device area from a high voltage device area. A gate oxide layer is grown in the device areas. A polysilicon layer is deposited overlying the gate oxide layer and isolation areas. A first photomask is formed over a portion of the high voltage device area wherein the first photomask also completely covers the low voltage device area. The polysilicon layer is etched away where it is not covered by the photomask to form a high voltage device. Ions are implanted to form lightly doped source and drain regions within the semiconductor substrate adjacent to the high voltage device wherein the first photomask protects the polysilicon layer in the low voltage device area from the ions. The first photomask is removed.
    Type: Grant
    Filed: November 19, 1998
    Date of Patent: August 29, 2000
    Assignee: Taiwan Semiconductor Manufacturing Company
    Inventors: Wen-Ting Chu, Chuan-Li Chang, Ming-Chon Ho, Chang-Song Lin, Di-Son Kwo