Patent ID: 7824960

Claim:
A method of assembling a stacked semiconductor package comprising: placing a phase change material between a top surface of a substrate and a bottom surface of a first semiconductor die; placing a phase change material between a top surface of said first semiconductor die and a bottom surface of a second semiconductor die; wherein said first and second semiconductor dies have a plurality of conductive protrusions on said bottom surfaces of said dies; wherein said first semiconductor die has a plurality of conductive vias extending from its conductive protrusions, through the first semiconductor die, to the top surface of the first semiconductor die; wherein said conductive vias of said first semiconductor die are in alignment with the conductive protrusions of the second semiconductor die; and after placing said phase change materials, heating said semiconductor dies and said substrate to cause said second semiconductor die to become electrically interconnected to said first semiconductor die and said first semiconductor die to become electrically connected to said substrate.