Patent ID: 8481362

Claim:
A method of manufacturing a thin film transistor, the method comprising the steps of: 1) forming a gate electrode on a substrate; 2) forming an insulating layer on the substrate and the gate electrode; 3) forming a semiconductor layer on the insulating layer; and 4) forming a source electrode and a drain electrode by using a zinc oxide electrode material comprising one or more of Si, Mo, and W so as to be connected to the semiconductor layer, wherein forming the source electrode and the drain electrode includes an etching, wherein the etching process is a dry etching process using a fluorine gas, and wherein in the forming of the source electrode and the drain electrode of step 4), the zinc oxide electrode further comprises In 2 O 3 /ZnO/SiO (1:1:1 mol %), In 2 O 3 /ZnO/MoO 3 (1:1:1 mol %), or In 2 O 3 /ZnO/WO 3 (1:1:1 mol %).