Patent ID: 8653654

Claim:
A method of manufacture of an integrated circuit packaging system comprising: forming a base assembly having a base substrate and an interconnect substrate, the base substrate and the interconnect substrate each having an outer peripheral surface coplanar with the outer peripheral surface of the other and cooperating to form a cavity in the base assembly, the interconnect substrate having a columnar through conductor adjacent to the cavity with a conductive attachment material conductively connected to the columnar through conductor for attaching the interconnect substrate to the base substrate; connecting a first device to the base assembly with the first device within the cavity; connecting a second device to the base assembly with the second device horizontally adjacent to the first device and within the cavity; and connecting an interposer substrate having an outer peripheral surface coplanar with the outer peripheral surface of the interconnect substrate, the interposer substrate having a conductive attachment material conductively connected to the columnar through connector for attaching the interposer substrate to the interconnect substrate, the interposer substrate covering the cavity.