Patents by Inventor Shihlin Chang

Shihlin Chang 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: 7204017
    Abstract: A manufacturing method of a modularized leadframe, using a first mold set to contact and hold the upper surface of rows of multiple block leads, using a second mold set to contact and hold at least one selected surface of the lower surface of leads, the second mold set has a protruding part between each row of leads so that the upper surface of the protruding part be in close contact with the inner surface of the first mold set. The hollow space between the mold sets is then injected with packaging materials such that a leadframe structure having packaged and fixed leads therein and surfaces for wire-bonding and soldering is obtained. A packaging material filling space is formed in the leadframe after removing the first and the second mold sets.
    Type: Grant
    Filed: October 7, 2004
    Date of Patent: April 17, 2007
    Assignee: Optimum Care International Tech. Inc.
    Inventors: Jeffrey Lien, Shihlin Chang
  • Publication number: 20050125999
    Abstract: A manufacturing method of a modularized leadframe, using a first mold set to paste and hold the upper surface of rows of multiple block leads, using a second mold set to paste and hold at least one selected surface of the lower surface of leads, let second mold set form a protruding part among each row of leads, let the surface of the protruding part be in close contact with the inner surface of the first mold set, then the hollow space between mold sets is injected with packaging materials such that a leadframe structure is formed with leads fixed and wire-bonding surface and soldering surface exposed ,a hollow space is formed in the leadframe for later wire-bonding operation after chip is attached in the space.
    Type: Application
    Filed: October 7, 2004
    Publication date: June 16, 2005
    Inventors: Jeffrey Lien, Shihlin Chang