Patents by Inventor H. Philip Li

H. Philip Li 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).

  • Semiconductor device and method of formation
    Publication number: 20030209811
    Abstract: A method and apparatus for decreasing contact resistance between a ohmic contact (120) and a semiconductor material (106) are disclosed. Increased contact resistance, which occurs as a result of encroachment of the ohmic contact (120) into the semiconductor material (106) is compensated for by notching edges of the ohmic contact (1210) to increase the effective surface area between abutting surfaces of the ohmic contact (120) and semiconductor material (106).
    Type: Application
    Filed: June 16, 2003
    Publication date: November 13, 2003
    Inventors: Paige M. Holm, Olin L. Hartin, H. Philip Li
  • Method for forming serrated contact opening in the semiconductor device
    Patent number: 6596616
    Abstract: A method and apparatus for decreasing contact resistance between a ohmic contact (120) and a semiconductor material (106) are disclosed. Increased contact resistance, which occurs as a result of encroachment of the ohmic contact (120) into the semiconductor material (106) is compensated for by notching edges of the ohmic contact (1210) to increase the effective surface area between abutting surfaces of the ohmic contact (120) and semiconductor material (106). The increase in surface area increases the effective transfer length of the contact, which correspondingly reduces contact resistance and improves device performance.
    Type: Grant
    Filed: April 19, 2002
    Date of Patent: July 22, 2003
    Assignee: Motorola, Inc.
    Inventors: Paige M. Holm, Olin L. Hartin, H. Philip Li