Patent ID: 7209194

Claim:
A display device, comprising: a pixel electrode and a common electrode formed in the same layer; a metal heat diffusion member formed in a layer different from the layer in which the pixel electrode and the common electrode are formed, the heat diffusion member having a projecting portion at a portion thereof remoter than a distance between the heat diffusion member and a thin film transistor; an electrode residue which short-circuits the pixel electrode and the common electrode as the pixel electrode and the common electrode are formed; and a laser beam irradiated void on the projecting portion of the heat diffusion member and a simultaneously-formed laser beam irradiated void on the pixel electrode, the voids electrically insulating the pixel electrode from the common electrode after the pixel electrode and the common electrode are short-circuited, wherein the heat diffusion member is superposed on the pixel electrode or the common electrode at the projecting portion, and wherein an inorganic insulation film and an organic insulation film are provided between a layer on which the heat diffusion member is formed and the layer in which the pixel electrode or the common electrode are formed, and the organic insulation film has a removed portion at least at the superposed portion between the heat diffusion member and the pixel electrode or the common electrode.