Patent ID: 8207604

Claim:
A microelectronic package comprising: a microelectronic element having a face and a plurality of contacts; a mounting structure including a dielectric substrate assembled with said microelectronic element, said mounting structure including a compliant layer overlying said face; and a plurality of posts physically connected with said dielectric substrate, said plurality of posts consisting essentially of copper and fully separated from said face of said microelectronic element by at least said compliant layer, said plurality of posts having upper extremities projecting in an upward direction away from said face of said microelectronic element to a height above said mounting structure such that said upper extremities of said plurality of posts are available for engagement with corresponding contact pads of a circuit board when juxtaposed with said contact pads, wherein said mounting structure further includes conductive traces physically connected with said dielectric substrate, said conductive posts being electrically connected with said contacts of said microelectronic element through said conductive traces, at least one of said conductive posts being an offset post, the base of each said offset post defining a centroid, and the upper extremity of each said offset post defining a centroid, the centroid of the upper extremity being offset from the centroid of the base in a horizontal offset direction transverse to said upward direction.