Patent ID: 7521794

Claim:
A semiconductor device, comprising: a support substrate comprising: a core metal material interposed between a first metal plane layer and a second metal plane layer, a first dielectric material interposed between the core metal material and the first metal plane layer, a second dielectric material interposed between the core metal material and the second metal plane layer, and thermally conductive via interconnects extending through the first and second dielectric and connecting the core metal material and the first and second metal plane layers; a semiconductor die on the first metal plane layer; and ball contacts on the second metal plane layer; wherein the support substrate comprises an opening therethrough, and the die is mounted on the first metal plane layer of the support substrate with a bond pad of the die positioned within the opening and connected to the second metal plane layer; and heat from the die passes through the first metal plane layer through the via interconnects to the second metal plane layer and into the ball contacts.