Patents by Inventor Kin Pul Kwan

Kin Pul Kwan 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: 7595225
    Abstract: A process for fabricating a leadless plastic chip carrier. A first surface of a leadframe strip is selectively etched to thereby provide depressions in the first surface and metal contacts are deposited in the depressions in the first surface of the leadframe strip. At least one layer of metal is selectively plated on at least the metal contacts to provide a plurality of selectively plated contact pads and a die attach pad. A semiconductor die is mounted on the first surface of the die attach pad and the semiconductor die is wire bonded to ones of the contact pads. The wire bonds and the semiconductor die are encapsulated in a molding material such that the molding material covers the die attach pad and the contact pads. The leadframe strip is etched away thereby exposing the metal contacts in the form of an array and the leadless plastic chip carrier is singulated from other leadless plastic chip carriers.
    Type: Grant
    Filed: October 5, 2004
    Date of Patent: September 29, 2009
    Inventors: Chun Ho Fan, Kin Pul Kwan, Hoi Chi Wong, Neil McLellan