Patent ID: 7514769
Filing Date: 2009-04-07
Classification: H01L

Abstract:
1. A packaged semiconductor device comprising: a die attach pad having a plurality of integrally formed risers, the die attach pad and the plurality of integrally formed risers being integrally formed from a conductive metal material, the risers extending upward from a front surface of the die attach pad, and wherein the risers are linked to form a continuous ring that defines a cavity; a die having an active surface, a plurality of side surfaces, a back surface, and a plurality of contact bumps on the active surface, wherein the die is attached to the die attach pad within the cavity such that the risers are located to each side of the die and the I/O pads face away from the die attach pad; and an encapsulant that completely covers the risers and covers the active and side surfaces of the die while leaving the contact bumps exposed on a first surface of the packaged semiconductor device, whereby no part of the risers is exposed through the encapsulant.