Patent ID: 7691728

Claim:
A method for manufacturing a semiconductor device comprising: providing a wafer with a semiconductor substrate and a semiconductor epitaxial layer; providing a plurality of substrate concave portions on the semiconductor substrate and a plurality of epitaxial layer concave portions on the semiconductor epitaxial layer substantially opposite the substrate concave portions, forming substrate electrodes in the substrate concave portions, each of the substrate electrodes including a top surface facing away from the semiconductor epitaxial layer; forming epitaxial layer electrodes in the epitaxial layer concave portions, each of the epitaxial layer electrodes including a top surface facing away from the semiconductor substrate layer; forming a substrate surface electrode adjacent the semiconductor substrate, the substrate surface electrode being on the top surface of the substrate electrodes; forming an epitaxial layer surface electrode adjacent the semiconductor epitaxial layer, the epitaxial layer surface electrode being on the top surface of the epitaxial layer electrodes; dicing the wafer, the substrate surface electrode, at least one of the substrate electrodes, at least one of the epitaxial layer electrodes, and the epitaxial layer surface electrode along a plane containing the at least one of the substrate electrodes and the at least one of the epitaxial layer electrodes; and separating the wafer to provide at least one device.