Patent ID: 7145225

Claim:
An interposer for use in a semiconductor device assembly or package, comprising: a substantially planar interposer substrate; at least one attach region on a surface of the interposer substrate including at least one conductive structure for contacting a back side of a semiconductor die; a plurality of first contact pads proximate to the at least one attach region; a plurality of second contact pads carried by the interposer substrate, each second contact pad corresponding to a first contact pad of the plurality of first contact pads and electrically connected thereto by a conductive trace extending therebetween; contact receptacles formed at least partially through the interposer substrate and in alignment with at least some second contact pads of the plurality of second contact pads; and at least one additional receptacle formed at least partially through the interposer substrate to expose at least a portion of the at least one conductive structure of the at least one attach region.