Patent ID: 8853000

Claim:
A method for manufacturing a package on package structure, comprising: providing a connection substrate, the connection substrate comprising a main body and a plurality of electrically conductive posts attached in the main body, the main body comprising a first surface and an opposite second surface, each electrically conductive post passing through the first and second surfaces, and opposite ends of the electrically conductive post protruding out of the main body; attaching a first package device on the first surface of the connection substrate, attaching a package adhesive on the second surface of the connection substrate, thereby obtaining a semi-finished package on package structure, the first package device comprising a circuit substrate and a semiconductor chip packaged on the circuit substrate, the circuit substrate comprising a plurality of first solder pads, the first solder pads aligned with the corresponding electrically conductive posts, and each first solder pad being in contact with and electrically connected to the corresponding electrically conductive post, the package adhesive covering the second surface of the connection substrate and the semiconductor chip, and one end surface of each electrically conductive post furthest the first package device being exposed at a surface of the package adhesive furthest the connection substrate; and attaching a second package device on a side of the package adhesive furthest the first package device, thereby obtaining a package on package structure, the second package device comprising a plurality of solder balls, the solder balls aligned with the respective electrically conductive posts, each solder ball being soldered to the end surface of the corresponding electrically conductive post which is exposed at the package adhesive.