Patent ID: 9478464
Filing Date: 2016-10-25
CPC Classification: H01L

Claim Text:
1. A method for manufacturing a TSV (through-hole silicon via) comprising: forming a trench-type element isolation film on a first wafer having a front side and a backside opposite to the front side using a trench-type element isolation process to define a portion of the first wafer, wherein the trench-type isolation film is formed on the front side; thinning the backside of the first wafer until the trench-type element isolation film is exposed through the backside of the first wafer; removing the portion of the first wafer through a patterning and an etching process on the backside of the first wafer; and forming the TSV by filling a conductive material in the trench-type element isolation film through the backside of the first wafer where the portion of the first wafer is removed.