Patent ID: 7528918

Claim:
A fringe field switching type thin film transistor substrate, comprising: a double layered structure gate line having a first transparent conductive layer and a metal layer on a substrate; a data line crossing the gate line, wherein a gate insulating film is formed therebetween; a thin film transistor having a gate electrode connected to the gate line, a source electrode connected to the data line, a drain electrode opposing the source electrode, and a semiconductor layer forming a channel part under the source electrode and the drain electrode; a double layered structure common line having the first transparent conductive layer and the metal layer, wherein the double layered structure common line is parallel to the gate line; a common electrode plate integrated with the first transparent conductive layer of the common line and formed in a pixel area defined by the crossing of the gate line and the data line, wherein the common electrode plate is formed of the same layer as the first transparent conductive layer of the gate line and the common line; a pixel electrode with silts being formed of the second transparent conductive layer, wholly covering the drain electrode, directly contacting with the drain electrode, and overlapping the common electrode plate, wherein the gate insulating film alone is formed between the common electrode plate and the pixel electrode in the pixel area; and a data protection pattern wholly covering the data line and the source electrode and directly contacting with the data line and the source electrode, wherein the data protection pattern is formed of the same second transparent conductive layer as the pixel electrode.