Patent ID: 8334601

Claim:
A method of manufacture of a package-on-package system comprising: providing a package substrate; attaching a semiconductor die to the package substrate; forming an encapsulant around the semiconductor die to have a bottom exposed surface coplanar with a bottom surface of the package substrate and to have a top exposed surface with through openings extending therefrom through the bottom exposed surface; and creating through vias by applying solder into the through openings, the through vias extending from the top exposed surface to the bottom exposed surface of the encapsulant, and the through vias coplanar with the bottom exposed surface of the encapsulant and coplanar with the top exposed surface of the encapsulant; and wherein: providing the package substrate includes forming the package substrate extending from an end edge to an opposite edge of the package-on-package system; and forming the encapsulant includes creating through openings located on either side of the package substrate.