Patent ID: 7892882

Claim:
A method of forming a package assembly comprising: providing a semiconductor die including a first side, a second side, and sidewalls extending between the first side and the second side, wherein the first side includes at least one active area, and the second side includes at least one ground contact region; providing a heat spreader including a cavity formed therein and including a first surface and a second surface, wherein the first surface of the heat spreader includes an opening to the cavity; after providing the heat spreader, placing the die within the cavity of the heat spreader such that the first side of the semiconductor die is substantially coplanar with the first surface of the heat spreader; after providing the heat spreader, dispensing a thermally-conductive and electrically-conductive adhesive material within the cavity to couple the ground contact region of the semiconductor die to the heat spreader, wherein the adhesive material encompasses the second side and the sidewalls of the semiconductor die, and the adhesive material, when cured, has a first surface that is substantially coplanar with the first surface of the heat spreader and the first side of the semiconductor die; and after dispensing the adhesive material, attaching the first side of the die and the first surface of the heat spreader to a first side of a planar structure including one or more connected thermal vias formed therein such that the one or more connected thermal vias are positioned to contact the first surface of the heat spreader and to extend through the planar structure to provide a thermal conduction path from the at least one ground contact region, through the thermally-conductive and electrically-conductive adhesive material, through the heat spreader, and through the one or more connected thermal vias to a bottom surface of the planar structure.