Patent ID: 6507107
Filing Date: 2003-01-14
Classification: H01L

Abstract:
A printed circuit board assembly comprising:a first semiconductor die defining a first active surface, said first active surface including at least one conductive bond pad; a second semiconductor die defining a second active surface, said second active surface including at least one conductive bond pad; an intermediate substrate positioned between said first active surface of said first semiconductor die and said second active surface of said second semiconductor die such that a first surface of said intermediate substrate faces said first active surface and such that a second surface of said intermediate substrate faces said second active surface, wherein said first semiconductor die is electrically coupled to said intermediate substrate by at least one topographic contact extending from said first active surface to said first surface of said intermediate substrate, said second surface of said intermediate substrate includes a cavity defined therein, said intermediate substrate defines a passage there through, said second semiconductor die is secured to said second surface of said intermediate substrate within said cavity such that said conductive bond pad of said second semiconductor die is aligned with said passage, and said second semiconductor die is electrically coupled to said intermediate substrate by at least one conductive line extending from said conductive bond pad of said second semiconductor die through said passage defined in said intermediate substrate and to a conductive contact on said first surface of said intermediate substrate; a printed circuit board positioned such that a first surface of said printed circuit board faces said second surface of said intermediate substrate and such that said second semiconductor die is positioned between said printed circuit board and said intermediate substrate; and a plurality of topographic contacts extending from said second surface of said intermediate substrate to said first surface of said printed circuit board.