Patents by Inventor Lung-Hsiang Chuang

Lung-Hsiang Chuang 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).

  • Method for stud pull test for film formed on semiconductor device
    Patent number: 6176141
    Abstract: A test sample with a film and an underlying substrate representing part of a semiconductor wafer is prepared for a stud pull test by a process that includes maintaining the sample in boiling salt water for a few hours. When an epoxy stud is attached to the film of the sample and the clamped assembly is baked for a about an hour, the stud is firmly attached to the film and in an otherwise conventional pull test, the film breaks loose from the substrate (or the stud breaks from the epoxy) before the stud breaks from the film.
    Type: Grant
    Filed: June 14, 1999
    Date of Patent: January 23, 2001
    Assignee: Taiwan Semiconductor Manufacturing Company
    Inventors: Lung-Hsiang Chuang, Chung-Long Chang, Syun-Ming Jang, Ying-Chen Chao