Patent ID: 7736977
Filing Date: 2010-06-15
Classification: H01L

Abstract:
1. A method for manufacturing a semiconductor device having a substrate and a metal wiring layer located on the substrate, such that regions of the substrate can be irradiated with radiating rays, the method comprising the steps of: forming the metal wiring layer over the entire substrate, the metal wiring layer being made of a light metal, removing the metal wiring layer above the regions to be irradiated so as to generate openings which will allow the radiating rays to pass therethrough, thereby forming a remaining metal wiring layer, directing the radiating rays, using the remaining metal wiring layer as a mask so that a smaller amount of the radiating rays are irradiated elsewhere in the substrate as compared with the regions to be irradiated under the openings thereby generating crystal defects under the openings, and following said radiating rays directing step, annealing said substrate to remove an amount of the crystal defects while other of the crystal defects are left remaining in said regions beneath said openings in said metal wiring layer, and completing the semiconductor device so that the remaining metal wiring layer is an electrode in the semiconductor device.