The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 22, 2003
Filed:
Oct. 12, 1999
Chien Ping Huang, Hsinchu Hsien, TW;
Tom Tang, Chang Hwa Hsien, TW;
Kevin Chiang, Taichung Hsien, TW;
Jenq-Yuan Lai, Taichung, TW;
Candy Tien, Taichung Hsien, TW;
Vicky Liu, Pingtung, TW;
Abstract
A semiconductor package with an exposed heat spreader includes a substrate having a semiconductor chip adhered to a first surface of the substrate. The heat spreader includes an upper portion, a lower portion with an opening formed in the center for receiving the semiconductor chip, and a connecting portion for connecting the upper portion and the lower portion in a manner that the upper portion is raised to a height above the opening of the lower portion. The lower portion is formed with a plurality of positioning members outwardly extending from edges of the lower portion to prevent the heat spreader from being dislocated during a molding process, and further includes downward flutes formed on the periphery of the opening for enabling resin flow underneath the heat spreader. The upper portion of the heat spreader is exposed to an exterior of the semiconductor package to improve heat dissipation.