Patents by Inventor Youn Cheol Yoo

Youn Cheol Yoo 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).

  • Chip mounting plate construction of lead frame for semiconductor package
    Patent number: 5661338
    Abstract: A chip mounting plate construction of lead frames for semiconductor packages which provides a chip mounting plate having a greatly reduced area to obtain a small bonding area between the chip mounting plate and a semiconductor chip mounted on the chip mounting plate, thereby capable of minimizing thermal strain generated at the chip mounting plate due to a thermal expansion thereof. The chip mounting plate is constructed to have a smaller area than the semiconductor chip, to have a central opening, or to have recesses.
    Type: Grant
    Filed: December 12, 1995
    Date of Patent: August 26, 1997
    Assignees: Anam Industrial Co., Ltd., Amkor Electronics, Inc.
    Inventors: Youn Cheol Yoo, Hee Yeoul Yoo, Jeong Lee, Doo Hyun Park, In Gyu Han