Patent ID: 8703534

Claim:
A method of forming semiconductor assemblies comprising: providing an interposer with through interposer vias, the interposer comprises a first surface and a second surface, wherein the through interposer vias extend from the first surface to the second surface of the interposer, the first and second surfaces of the interposer comprise interposer contact pads thereon, the through interposer vias facilitate electrical coupling between the interposer contact pads on the first and second surfaces of the interposer, and the second surface of the interposer comprises interposer contacts disposed thereon, the interposer contacts are configured to facilitate electrical coupling between the interposer contact pads and an external device; and mounting a first die on a first die attach region on the first surface of the interposer, the first die comprises a first surface with first conductive contacts thereon, wherein the interposer comprises material with coefficient of thermal expansion (CTE) similar to that of the first die, the first conductive contacts of the first die are coupled to the through interposer vias on the first surface of the interposer.