Patent ID: 8563431

Claim:
A manufacturing method of a semiconductor device, comprising: forming a layer to be processed; forming a light absorption layer over the layer to be processed; forming an insulating layer over the light absorption layer; irradiating the light absorption layer and the insulating layer with a laser beam through a photomask, so that at least an irradiated region of the light absorption layer and the insulating layer is removed; etching the layer to be processed using a left part of the light absorption layer and a left part of the insulating layer as a mask; and removing the left part of the light absorption layer and the left part of the insulating layer after etching the layer to be processed, wherein the left part of the light absorption layer and the left part of the insulating layer exist on the layer to be processed after the step of the etching, wherein the mask is formed by the step of the irradiating, and wherein the light absorption layer comprises a conductive material.