Patent ID: 6479903
Filing Date: 2002-11-12
Classification: H01L

Abstract:
An Integrated Circuit device package, comprising:an Integrated Circuit (IC) device, said IC having been provided with first points of electrical contact; a heat sink, an interconnect substrate for said Integrated Circuit device having been attached to a surface of said heatsink, said interconnect substrate having been provided with second points of electrical contact in a surface thereof; said heatsink with the thereto attached interconnect substrate being positioned in close contact with said IC device, said first points of electrical contact being aligned with said second points of electrical contact; said first and second points of electrical contact being reflowed, establishing electrical connections between said integrated circuit and said interconnect substrate; said IC device being encased in a molding compound, including underfill for said Integrated Circuit device, said molding compound having a surface having a size; a motherboard, said motherboard having a first surface with third points of electrical contact in addition to having a thermal shield in said first surface thereof, said thermal shield having a surface area of about the size of said surface of said molding compound; contact balls having been placed on the surface of said motherboard; said encased IC device having been placed on the surface of said motherboard, facing the first points of electrical contact upwards, further placing said surface of said molding compound on said thermal shield of said motherboard, at least one of said contact balls having been placed on the surface of said motherboard providing electrical contact between at least one of said second points of electrical contact of said interconnect substrate and at least one of said third points of electrical contact of said motherboard; and said contact balls having been placed on said motherboard being reflowed, connecting at least one of said contact balls placed on said motherboard with at least one of said first and second points of electrical contact.