Patents by Inventor Chih-Wen Ho

Chih-Wen Ho 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).

  • Publication number: 20100109159
    Abstract: A bumped chip is revealed, including a chip, a UBM layer, an Ag bump, and a creeping-resist layer. The chip has a bonding pad and a passivation layer covering one surface of the chip and exposing the bonding pad. The UBM layer is disposed on the bonding pad and covers the passivation layer at the peripheries of the opening. The Ag bump is disposed on the UBM layer to form as a pillar bump having a top surface and a pillar sidewall. The creeping-resist layer is formed at least on the pillar sidewall to fully encapsulate the Ag bump. Therefore, the disclosed bumped chip will have no Ag-creeping due to exerting stresses nor changing of joint heights under high temperature environment to meet the bumping requirements of lead-free, high reliability, and lower cost.
    Type: Application
    Filed: October 20, 2009
    Publication date: May 6, 2010
    Inventors: Chih-Wen HO, Yung-Fa Huang, Ming-Kuo Wei, Po-Chien Lee
  • Patent number: D467365
    Type: Grant
    Filed: February 13, 2002
    Date of Patent: December 17, 2002
    Assignee: TYC Brother Industrial Co., Ltd.
    Inventors: Ming-Hsien Tsai, Chih-Wen Ho