Patents by Inventor Chok Liep

Chok Liep 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).

  • Structure and method for fabricating a bond pad structure
    Publication number: 20060071350
    Abstract: A structure and method for an improved a bond pad structure. We provide a top wiring layer and a top dielectric (IMD) layer over a semiconductor structure. The buffer dielectric layer is formed over the top wiring layer and the top dielectric (IMD) layer. We form a buffer opening in the buffer dielectric layer exposing at least of portion of the top wiring layer. We form a barrier layer over the buffer dielectric layer, and the top wiring layer in the buffer opening. A conductive buffer layer is formed over the barrier layer. We planarize the conductive buffer layer to form a buffer pad in the buffer opening. We form a passivation layer over the buffer pad and the buffer dielectric layer. We form a bond pad opening in the passivation layer over at least a portion of the buffer pad. We form a bond pad support layer over the buffer pad and the buffer dielectric layer. We form a bond pad layer over the a bond pad support layer.
    Type: Application
    Filed: November 21, 2005
    Publication date: April 6, 2006
    Inventors: Zhang Fan, Zhang Chao, Liu Wuping, Chok Liep, Hsia Choo, Lim Kheng, Alan Cuthbertson, Tan Boon
  • Structure and method for fabricating a bond pad structure
    Publication number: 20050127530
    Abstract: A structure and method for an improved a bond pad structure. We provide a top wiring layer and a top dielectric (IMD) layer over a semiconductor structure. The buffer dielectric layer is formed over the top wiring layer and the top dielectric (IMD) layer. We form a buffer opening in the buffer dielectric layer exposing at least of portion of the top wiring layer. We form a barrier layer over the buffer dielectric layer, and the top wiring layer in the buffer opening. A conductive buffer layer is formed over the barrier layer. We planarize the conductive buffer layer to form a buffer pad in the buffer opening. We form a passivation layer over the buffer pad and the buffer dielectric layer. We form a bond pad opening in the passivation layer over at least a portion of the buffer pad. We form a bond pad support layer over the buffer pad and the buffer dielectric layer. We form a bond pad layer over the a bond pad support layer.
    Type: Application
    Filed: December 13, 2003
    Publication date: June 16, 2005
    Inventors: Zhang Fan, Zhang Chao, Liu Wuping, Chok Liep, Hsia Choo, Lim Kheng, Alan Cuthbertson, Tan Boom