Patent ID: 6337225
Filing Date: 2002-01-08
Classification: H01L

Abstract:
A method of making a stacked die assembly mounted on a substrate surface, comprising the steps of:(a) providing a substrate having a surface for mounting thereon at least one stacked die assembly; (b) providing first and second semiconductor wafers, each of said wafers including a plurality of semiconductor integrated circuit (IC) devices in the form of dies or chips each having a pair of opposed major surfaces; (c) segmenting said first semiconductor wafer to form a plurality of discrete first dies or chips; (d) bonding one of said pair of opposed major surfaces of each of said discrete first dies or chips to one of said pair of opposed major surfaces of a respective die or chip of said second semiconductor wafer; (e) segmenting said second wafer to form a plurality of stacked die assemblies each comprising a stacked, bonded pair of discrete first and second dies or chips; and (f) bonding the other one of said pair of opposed major surfaces of said discrete second die or chip of one of said stacked die assemblies to said substrate surface.