Patent ID: 9640469
Date: 2017-05-02
CPC Classifications: H01L

Claim:
1. A semiconductor package, comprising: a substrate having first and second surfaces; a die having first and second surfaces, where the first surface of the die is flip-chip bonded to the first surface of the substrate; a compressed, laterally expansive, thermally conductive interface layer formed to cover the second surface of the die; and a heat spreader lid comprising an exposed heat dissipation surface layer and a plurality of connection spars extending laterally from the heat dissipation surface layer, where the heat dissipation surface layer contacts the compressed, laterally expansive, thermally conductive interface layer and is positioned apart from the substrate to define an encapsulation molding region in which encapsulation mold compound material is located to permanently attach the substrate, die, and heat spreader lid, wherein the heat spreader lid comprises an etched, machined, or stamped metal layer defining an upset heat spreader lid having a plurality of downset lead finger spars to define one or more singulation cut area openings around the heat spreader lid.