Patent ID: 8692365

Claim:
A method of manufacture of an integrated circuit packaging system comprising: providing a base substrate having a package connector; attaching a package stack assembly having a contact pad on a side of the base substrate opposite and facing away from the package connector; applying an encapsulation having a cavity with a tapered side directly over the package stack assembly, the contact pad exposed in the cavity; attaching a recessed circuitry unit having a non-horizontal side in the cavity, the recessed circuitry unit on the contact pad, a chamber of the cavity formed by the non-horizontal side and the tapered side of the cavity; and mounting a thermal structure over the recessed circuitry unit, the cavity, and the encapsulation; and applying a thermal adhesive to the thermal structure, the encapsulation, and the recessed circuitry unit, the thermal adhesive separating the thermal structure from the encapsulation and the recessed circuitry unit.