Patent ID: 7671367

Claim:
A liquid crystal display device, comprising: a gate line on a substrate in a double conductive layer structure having a first transparent conductive layer and a second opaque conductive layer; a data line crossing the gate line with a gate insulating film therebetween to define a pixel area; a thin film transistor including a gate electrode connected to the gate line, a source electrode connected to the data line, a drain electrode connected to the source electrode and a semiconductor pattern for defining a channel between the source electrode and the drain electrode; a common line on the substrate in the double conductive layer structure in parallel to the gate line; a common electrode provided by an extension of a first conductive layer of the common line in the pixel area; a protective film on the thin film transistor and the data line; and a pixel electrode in a pixel hole passing through the protective film in such a manner to make an interface with the protective film and connected to the drain electrode, the pixel electrode being formed a horizontal electric field with the common electrode.