Patent ID: 6975035

Claim:
A flip chip semiconductor device assembly comprising: at least one semiconductor die having an active surface and a back surface, the active surface having a plurality of conductive bumps thereon; an interposer substrate having a first surface and a second surface, the interposer substrate including a dielectric member having a plurality of recesses extending thereinto from the first surface, each recess of the plurality exposing at least a portion of a conductive element at a bottom thereof, the interposer substrate mounted to the at least one semiconductor die with the plurality of conductive bumps substantially received in the plurality of recesses, the plurality of recesses sized so that a gap is left surrounding at least a portion of at least some of the plurality of conductive bumps in the plurality of recesses, the interposer substrate including at least one opening extending therethrough, the at least one opening being in communication with the gaps; and a dielectric filler material extending from the at least one opening into the gaps.