Patent ID: 7358603

Claim:
A high density electronic package comprising: a) at least one component having an upper surface and a lower surface and a plurality of electrical contact pads on the lower surface of the component; b) a substrate having an upper surface and a lower surface, a plurality of electrical contact pads on the upper surface, and a plurality of electrical contact pads on the lower surface, at least some of the electrical contact pads on the upper surface of the substrate being electrically coupled to electrical contact pads on the lower surface of the substrate, and at least one set of electrical contact pads on the upper surface of the substrate being arranged so that when the at least one component is arranged with the lower surface of the component over the upper surface of the substrate, the electrical contact pads on the lower surface of the component align with the set of electrical contact pads on the upper surface of the substrate; and c) an interposer located between the at least one component and the substrate, the interposer comprising: i) a thermally conductive carrier, having a plurality of holes passing through the carrier, at least one set of the holes being arranged so that when the interposer is in place between the component and the substrate, the set of holes is aligned with the set of electrical contacts on the upper surface of the substrate which is aligned with the electrical contacts on the lower surface of the component; and ii) a plurality of contacts located in the carrier, in thermal communication with the carrier, but electrically isolated from the carrier; such that when the interposer is in place between the component and the substrate, the contacts of the carrier make electrical connection between the electrical contact pads on the lower surface of the component and the electrical contact pads on the upper surface of the substrate with which they are aligned.