Patent ID: 7751011

Claim:
A method of fabricating a liquid crystal display device, comprising: a first mask process of forming a first mask pattern group including a gate line, a gate electrode, a common line and a common electrode on a substrate; a second mask process of forming a gate insulating film on the first mask pattern group and a semiconductor pattern and an opaque conductive pattern on the gate insulating film; and a third mask process of forming a transparent conductive pattern on the opaque conductive pattern so that a data line crossing the gate line, a source electrode and a drain electrode are formed of a double-layer structure having the opaque conductive pattern and the transparent conductive pattern, and a pixel electrode is extended from the transparent conductive pattern of the drain electrode to form a horizontal electric field with the common electrode, and forming a protective film so that one end of the protective film is contacted with one end of the transparent conductive pattern.