Patent ID: 8513669

Claim:
A thin film transistor (TFT) comprising: a substrate; a semiconductor layer disposed on the substrate and including a channel region and source and drain regions; a gate electrode disposed in a position corresponding to the channel region of the semiconductor layer; a gate insulating layer interposed between the gate electrode and the semiconductor layer to electrically insulate the semiconductor layer from the gate electrode; a metal structure comprising a double layer disposed apart from the gate electrode, over the semiconductor layer, and contacting a surface of a region of the semiconductor layer other than the channel region through a hole in the gate insulating layer, the metal structure consisting of a same material as the gate electrode; and source and drain electrodes electrically connected to the source and drain regions, respectively, of the semiconductor layer, wherein an insulating layer is disposed between the metal structure and the source and drain electrodes, and wherein the metal structure is not directly connected to the source and drain electrodes.