Abstract: A circuit module that includes a system for reducing thermal variation and cooling the circuit module. In preferred embodiments, the module includes a thermally-conductive rigid substrate having first and second lateral sides, an edge, and an integrated cooling component. The integrated cooling component reduces thermal variation and cools the circuit module. Flex circuitry populated with a plurality of ICs and exhibiting a connective facility that comprises plural contacts for use with an edge connector is wrapped about the edge of the thermally-conductive substrate. Heat from the plurality of ICs is thermally-conducted by the thermally-conductive substrate to the integrated cooling component.

Abstract: A stackable flex circuit IC package includes a flex circuit comprised of a flexible base with a conductive pattern thereon, and wrapped around at least one end portion of a frame so as to expose the conductive pattern at the edge portion. An IC device is mounted within a central aperture in the frame, and is electrically coupled to the conductive pattern. The IC device is sealed in place within the frame with epoxy. A stack of the IC packages is assembled by disposing a conductive epoxy of anisotropic material between the conductive patterns at the edge portions of adjacent IC packages. Application of pressure in a vertical or Z-axis direction between adjacent IC packages completes electrical connections between the individual conductors of the conductive patterns of adjacent IC packages to interconnect the IC packages of the stack, while at the same time maintaining electrical isolation between adjacent conductors within each of the conductive patterns.