Patent ID: 6472741
Filing Date: 2002-10-29
Classification: H01L

Abstract:
A stacked-die BGA semiconductor package, which comprises:(a) a substrate having a front surface and a back surface; (b) a first semiconductor chip having an active e and an inactive surface, and whose active surface is bonded and electrically coupled to the front surface of the substrate through flip-chip technology, (c) a heat spreader having a support portion and an overhead portion formed with a plurality of wire-routing openings; the heat spreader being mounted in such a manner that the support portion is supported on the front surface of the substrate, while the overhead portion is abutted on the inactive surface of the first semiconductor chip; (d) a second semiconductor chip having an active surface and an inactive surface, and whose inactive surface is thermally coupled to the overhead portion of the heat spreader, (e) a plurality of bonding wires which are routed from the active surface of the second semiconductor chip through the wire-routing openings in the overhead portion of the heat spreader down to the front surface of the substrate, for electrically coupling the second semiconductor chip to the substrate; (f) an encapsulation body for encapsulating the front surface of the substrate, the first semiconductor chip, the heat spreader, the second semiconductor chip, and the bonding wires; and (g) an array of solder balls implanted over the back surface of the substrate.