Patent ID: 6900856

Claim:
A manufacturing method of a liquid crystal display device, comprising: forming a gate line, a gate electrode and a gate pad on a substrate; forming a gate insulating layer on the gate line, the gate electrode and the gate pad; forming a semiconductor layer on the gate insulating layer over the gate electrode; forming a data line, a source electrode, a drain electrode, and a data pad, wherein the data line crosses the gate line to define a pixel area, the source and drain electrodes are disposed over the semiconductor layer spaced apart from each other, and the data pad is disposed at one end of the data line, and wherein the gate electrode, the semiconductor layer, and the source and drain electrodes constitute a thin film transistor; forming a passivation layer covering the thin film transistor; forming a black matrix on the passivation layer, wherein the black matrix has an opening corresponding to the pixel area and the opening exposes the passivation layer on a portion of the drain electrode; patterning the passivation layer and the gate insulating layer by using the black matrix as an etching mask to expose the portion of the drain electrode, the gate pad, and the data pad; forming a first transparent conductive layer on the black matrix, wherein the first transparent conductive layer contacts the portion of the drain electrode, the gate pad, and the data pad; forming a color filter layer on the first transparent conductive layer in the opening; forming a second transparent conductive layer on the color filter layer, the second transparent conductive layer contacting the first transparent conductive layer; and forming a pixel electrode, a gate pad terminal and a data pad terminal by patterning the first and second transparent conductive layers, wherein the pixel electrode is disposed in the pixel area, the gate pad terminal is disposed on the gate pad, and the data pad terminal is disposed on the data pad.