Patent ID: 8647932

Claim:
A method of manufacturing a thin film transistor, the method comprising: preparing a substrate; forming a gate electrode on the substrate; forming a gate insulation film on the substrate to cover the gate electrode; forming a semiconductor layer on the gate insulation film in a region corresponding to the gate electrode; forming an electrode layer having a double layer structure on the gate insulation film in a manner such that a topside portion of the semiconductor layer is exposed through the electrode layer; and forming a passivation layer on the gate insulation film to cover the semiconductor layer and the electrode layer, wherein the forming of the electrode layer comprises: forming a seed layer that makes contact with a top surface of the gate insulation film and a lateral surface of the semiconductor layer; and forming a main layer that makes contact with a top surface of the seed layer, wherein the seed layer is formed of a transparent conductive material doped with indium gallium zinc oxide (IGZO).