Patent ID: 6943859

Claim:
A liquid crystal display device comprising: a substrate; a thin film transistor including a gate electrode, a source electrode, and a drain electrode on the substrate; a pixel electrode electrically connected to the drain electrode via inner side surfaces of the drain electrode and in direct contact with a portion of the substrate; a data line electrically connected with the source electrode; a first insulating layer, a pure amorphous silicon layer, and a doped amorphous silicon layer sequentially layered under the data line; a data pad at one end of the data line; a gate line electrically connected with the gate electrode; and a gate pad electrode at one end of the gate line, wherein the gate pad electrode is formed of a same material and in a same layer as the pixel electrode in a single layer in direct contact over the first insulating layer, wherein the first insulating layer includes an opening that exposes a portion of the gate pad, and wherein the gate pad electrode electrically contacts the exposed portion of the gate pad and overlaps the first insulating layer.