Patent ID: 7465608

Claim:
A method of forming a multichip module, comprising: securing together a plurality of semiconductor chips in a manner so as to form a base structure having an upper exterior surface, a lower exterior surface, and a lateral exterior surface, said lateral exterior surface is comprised of a portion of each chip, wherein an insulating material is formed on the upper exterior surface and interposed between at least two adjacent chips in the base structure, wherein said insulating material comprises a polymeric material; forming a plurality of conductive contacts on the lateral exterior surface wherein the conductive contacts provide connection between the chips and external circuitry; converting at least a portion of the insulating material formed on the upper exterior surface and between two adjacent chips in the base structure to a foamed state; and securing an exterior chip to the lateral exterior surface wherein a first surface of the exterior chip is positioned adjacent the lateral exterior surface and extends across at least a portion of the lateral exterior surface.