Patent ID: 7129174

Claim:
A method of fabricating a semiconductor device comprising: forming at least one layer on a first and a second side of a semiconductor substrate; removing portions of the at least one layer on the first side of the semiconductor substrate to form a pattern of the at least one layer on the first side of the substrate while maintaining the at least one layer on the second side of the substrate; forming a capping layer on the pattern of the at least one layer on the first side of the substrate and on the at least one layer on the second side of the semiconductor substrate; removing the capping layer on the second side of the semiconductor substrate thereby exposing the at least one layer on the second side of the substrate while maintaining the capping layer on the first side of the substrate; removing the at least one layer on the second side of the semiconductor substrate, while maintaining the capping layer and the pattern of the at least one layer on the first side of the semiconductor substrate; and removing a portion of the capping layer on the first side of the semiconductor substrate wherein the capping layer is formed of a material that is different from the at least one layer on the second side of the substrate.