Patent ID: 7939934

Claim:
An assembly for testing microelectronic devices, comprising: a microelectronic element having faces and contacts; a flexible substrate spaced from and overlying a first face of said microelectronic element; a plurality of substantially rigid conductive posts extending from said flexible substrate and projecting away from the first face of said microelectronic element, at least some of said conductive posts being electrically interconnected with said microelectronic element; and a plurality of support elements disposed between the first face of said microelectronic element and said flexible substrate and supporting said flexible substrate over said microelectronic element, at least some of said substantially rigid conductive posts being offset from said support elements, wherein said plurality of support elements are disposed in an array so that said support elements define a plurality of uniformly distributed, same shaped zones of said flexible substrate, each one of said plurality of zones is bounded by an associated portion of said plurality of support elements which define corners of that zone, and different ones of said conductive posts are disposed in different ones of said zones such that, in each respective zone, only one of said conductive posts is disposed in that zone and is bounded by three or more of said support elements.