Patents by Inventor Pei-Hwa Tsao

Pei-Hwa Tsao 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: 7154185
    Abstract: A method for encapsulating an integrated circuit chip is described. An intergrated circuit chip is attached to a substrate; a stress buffering material only covers corners of the integrated circuit chip; and an encapsulation material coats the integated circuit chip and a portion of the substrate.
    Type: Grant
    Filed: November 20, 2003
    Date of Patent: December 26, 2006
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Hsin-Hui Lee, Pei-Hwa Tsao, Chao-Yuan Su
  • Publication number: 20050112795
    Abstract: A method for encapsulating an integrated circuit chip is described. An integrated circuit chip is attached to a substrate. A dam is formed surrounding the integrated circuit chip. At least one corner of the integrated circuit chip is covered with a stress buffering material. The integrated circuit chip and all of the substrate within the dam are coated with an encapsulation material wherein the encapsulation material covers the stress buffering material and wherein the stress buffering material prevents delamination of the encapsulation material at the corners of the integrated circuit chip.
    Type: Application
    Filed: November 20, 2003
    Publication date: May 26, 2005
    Inventors: Hsin-Hui Lee, Pei-Hwa Tsao, Chao-Yuan Su
  • Patent number: 6372619
    Abstract: A method for fabricating a wafer level chip scale package with discrete package encapsulation and devices formed by the method are described. A dry film photoresist layer is first deposited on top of a pre-processed wafer complete with a plurality of bond pads and an I/O redistribution metal layer. The dry film photoresist layer is then patterned to form a plurality of trench openings and a plurality of via openings followed by the process of depositing a liquid photoresist material into the plurality of trench openings and plating a conductive metal into the plurality of via openings to form via plugs. After the dry film photoresist layer is removed, an encapsulant layer is printed on top of the wafer to embed the protrusions formed by the liquid photoresist material and the via plugs.
    Type: Grant
    Filed: July 30, 2001
    Date of Patent: April 16, 2002
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd
    Inventors: Chender Huang, Pei-Hwa Tsao