Patent ID: 7102718

Claim:
A liquid crystal display device comprising: a pair of substrates; liquid crystal molecules held between the pair of substrates; a gate wiring and a common electrode formed over one of the pair of substrates; an insulating film formed over the gate wiring and the common electrode; an amorphous semiconductor film formed over the insulating film; a source region and a drain region formed on the amorphous semiconductor film; a pixel electrode formed on the drain region; and a source wiring formed on the source region; wherein the pixel electrode and the common electrode are disposed so that the liquid crystal molecules are controlled by an electric field produced between the pixel electrode and the common electrode; the insulating film covers at least a portion of said one of the pair of substrates wherein said portion is between the common electrode and the pixel electrode; an outside end face of the drain region is substantially coincident with an outside end face of the amorphous semiconductor film and an end face of the pixel electrode and the outside end face of said drain region is not covered with the pixel electrode; and the source wiring is disposed above the common electrode with the insulating film interposed therebetween.