Patent ID: 7220612

Claim:
A method of fabricating a liquid crystal display device, comprising: a first mask process of forming a gate line and a gate electrode connected to the gate line on a substrate; a second mask process of forming a gate insulating film covering the gate line and the gate electrode and a semiconductor pattern and a source/drain metal pattern built thereon; and a third mask process of forming a transparent conductive pattern on a gate insulating film provided with the source/drain metal pattern and forming a protective film making an interface with the transparent conductive pattern, whereby a data line crossing the gate line to define a pixel area, a source electrode connected to the data line and a drain electrode opposed to the source electrode are provided in a double-layer structure in which the source/drain metal pattern and the transparent conductive pattern are built; and a pixel electrode extended from the transparent conductive pattern of the drain electrode is provided at said pixel area.