Patent ID: 7061565

Claim:
An array substrate for use in a liquid crystal display device, comprising: a gate electrode and a gate line, each having a molybdenum alloy (Mo-alloy) layer including one of tungsten (W), neodymium (Nd), niobium (Nb) and the combination thereof and a copper (Cu) layer on a substrate, wherein the Mo-alloy layer is formed on the substrate and the Cu layer is formed on the Mo-alloy layer; a gate insulation layer on the substrate to cover the gate electrode and the gate line; an active layer arranged on the gate insulation layer in a portion over the gate electrode; an ohmic contact layer on the active layer; a data line on the gate insulation layer, the data line crossing the gate line and defining a pixel region; source and drain electrodes on the ohmic contact layer, the source electrode extending from the data line, and the drain electrode spaced apart from the source electrode; a passivation layer on the gate insulation layer covering the data line and the source and drain electrodes, the passivation layer having a drain contact hole exposing a portion of the drain electrode; and a pixel electrode configured on the passivation layer in the pixel region, the pixel electrode electrically contacting the drain electrode through the drain contact hole.