Patent ID: 7811870

Claim:
A method for fabricating an array substrate for a liquid crystal display device, the method comprising: forming a gate line configured with a first transparent metal layer, a first gate metal layer and a second gate metal layer stacked in sequence, a gate electrode extending from the gate line, and a pixel electrode formed of the first transparent metal layer; depositing a gate insulating layer, a semiconductor layer and a data metal layer on the substrate; patterning the gate insulating layer, the semiconductor layer and the data metal layer to form a data line intersected with the gate line, and source and drain electrodes extending from the data line, wherein the source and drain electrodes are connected to each other over the gate electrode; forming a second transparent metal layer on the substrate; patterning the second transparent metal layer to form a second transparent metal layer pattern on the data line, the source electrode, the drain electrode and a portion of the pixel electrode; and etching the data metal layer using the second transparent metal layer pattern as a mask to expose the semiconductor layer between the source and drain electrodes.