Patent ID: 7543373

Claim:
A method of enhancing the mechanical structure of a printed circuit board (PCB) system board for a multi-chip module (MCM) to form an MCM package, comprising: providing said PCB system board for said multi-chip module (MCM) with a mechanical stiffener for removing excess heat from said MCM to said mechanical stiffener, and applying a thermo-conducting gel package formed a self-conforming insulator structure shaped like a cushion of two separate insulating layers filled with a non-compressible thermo-conducting gel paste insulating low temperature curing epoxy resin material between said PCB system board and said mechanical stiffener for forming an epoxy interface between the PCB system board and the mechanical stiffener that also acts as a thermo path for excess heat from the MCM to the mechanical stiffener and causing said gel package to conform to all irregularities and to apply equal contact pressure to a printed circuit board surface after assembly of said thermo-conducting gel package between a mechanical stiffener and said printed circuit PCB system board by applying pressure on said non-compressible gel package to cause said non-compressible thermo-conducting gel package to conform and fill any voids between said printed circuit and the mechanical stiffener, wherein pressure on said non-compressible thermo-conducting gel package is applied by mounting an MCM module to said printed circuit board against said mechanical stiffener when said gel package is placed between said printed circuit board and said mechanical stiffener and said MCM module and mechanical stiffener are drawn together pressing to cause said thermo-conducting gel package to press against said printed circuit board and fill any voids between said printed circuit board and the mechanical stiffener and to cause said gel package to maintain compression between said printed circuit board and mechanical stiffener in said MCM package.