Patent ID: 8377758

Claim:
A method of manufacturing a thin film transistor array substrate, comprising the step of forming the thin film transistor on the substrate as the switch device of the pixel unit, the thin film transistor comprising a source electrode connected to a pixel electrode and that extends over a gate line, a drain electrode connected to a data line and having a U-type shape, and a channel region between the source electrode and the drain electrode, the method comprising: forming a source extension region on the source electrode that connects to the pixel electrode through the source electrode, wherein the source extension region extends perpendicular to and crosses over the source electrode to form a cross-type shape, and forming a drain extension region at both ends of the U-type shaped drain electrode and extending outwards therefrom, wherein the drain extension region is disposed opposite the source extension region to form a channel extension region therebetween; wherein the source extension region and the drain extension region extend over the gate line in a direction parallel to the extension direction of the gate line on the substrate, and wherein the source extension region and the source electrode vertically intersect with each other and form an integrated structure together.