Patent ID: 8546804

Claim:
A semiconductor device comprising: a gate electrode formed on an insulation substrate; a semiconductor layer including a first amorphous silicon film and a second amorphous silicon film having a predetermined conductivity type, being formed in this order on said gate electrode with a gate insulation film interposed between said gate electrode and said semiconductor layer, the first amorphous silicon film having an upper surface and a side surface, the side surface extending in a direction which intersects a direction in which the upper surface extends; and source and drain electrodes directly connected to said semiconductor layer and containing at least aluminum (Al), wherein said semiconductor layer is formed on an inner side of an outer periphery of said gate electrode in a planar view, and at least nitrogen (N) is contained in a first region formed within said first amorphous silicon film at an interface between said side surface of said first amorphous silicon film and said source and drain electrodes.