Patent ID: 8610861
Filing Date: 2013-12-17
Classification: G02F,H01L

Abstract:
1. A liquid crystal display device comprising: a gate wiring over an insulating surface; a common wiring over the insulating surface; a first insulating film comprising silicon nitride over the gate wiring and the common wiring; a first amorphous semiconductor film over the first insulating film; a pair of second amorphous semiconductor films over the first amorphous semiconductor film; a source wiring over one of the pair of second amorphous semiconductor films; a second insulating film comprising silicon nitride over the source wiring; a common electrode electrically connected to the common wiring; a transparent electrode over the common electrode, and electrically connected to the other of the pair of second amorphous semiconductor films; and an alignment film over the transparent electrode and the common electrode; wherein the source wiring overlaps with the first amorphous semiconductor film and one of the pair of second amorphous semiconductor films, wherein the first amorphous semiconductor film and one of the pair of second amorphous semiconductor films extend along the source wiring, wherein the second insulating film is in contact with the first amorphous semiconductor film and the pair of second amorphous semiconductor films in a region overlapping with the gate wiring, wherein the transparent electrode and the common electrode are disposed so that liquid crystal molecules are controlled by an electric field produced between the transparent electrode and the common electrode, and wherein the transparent electrode and the common wiring are overlapped with each other.