Patent ID: 7635613
Filing Date: 2009-12-22
Classification: H01L

Abstract:
1. A method for fabricating a semiconductor device comprising the steps of: providing a leadframe made from a planar metal sheet, said leadframe including a leadframe pad of a size, having first and second surfaces and a plurality of non-coplanar members bent away form the first surface and past the second surface, operable as mechanical stabilizers configured for insertion in contours, said plurality of non-coplanar members adjoining said leadframe pad; providing a heat spreader having first and second surfaces, a planar pad of a size matching said leadframe pad size, and contours suitable for insertion of said plurality of non-coplanar members; inserting said plurality of non-coplanar members into said contours so that said first surface of said heat spreader touches said second surface of said leadframe across said leadframe pad; providing a semiconductor chip and mounting said semiconductor chip on said first surface of said leadframe; and encapsulating said semiconductor chip, while leaving said second surface of said heat spreader uncovered.