Patent ID: 7790576

Claim:
A method of making a semiconductor device, comprising: providing a wafer having a plurality of semiconductor die; dicing the semiconductor wafer to separate the semiconductor die; transferring the semiconductor die onto a carrier; forming a polymer die extension region around a periphery of the semiconductor die on the carrier; removing the carrier; forming a plurality of through hole vias (THV) in the polymer die extension region; depositing conductive material in the THVs; forming a first intermediate conduction layer between contact pads on a front side of the semiconductor die and the THVs; forming a second intermediate conduction layer on a backside of the semiconductor die in electrical contact with the THVs; forming an under bump metallization on the backside of the semiconductor die in electrical contact with the second intermediate conduction layer; forming a plurality of solder bumps on the under bump metallization; and singulating through a center area of each of the plurality of THVs of the polymer die extension region to separate the semiconductor die.