Patent ID: 7250676

Claim:
A multi-package module comprising: a substrate having an upper surface and a lower surface, wherein the upper surface includes a central region and a peripheral region; a chip having an active surface and a back surface and including a plurality of bumps on the active surface, wherein the chip is disposed on the central region of the upper surface of the substrate through the bumps; a plurality of chip scale packages (CSP), each having a first surface and an opposing second surface and including a plurality of electrical terminals on the first surface, wherein the CSPs are disposed on the peripheral region of the upper surface of the substrate through the electrical terminals, and the second surfaces of the CSPs are higher than the back surface of the chip; and a heat spreader having an attachment surface including an extrusion region at a center thereof and a planar region at a periphery thereof, wherein the planar region is attached to the second surfaces of the CSPs, the extrusion region is thermally coupled to the back surface of the chip, and the extrusion region is circular.