Patent ID: 6927105

Claim:
A method of manufacturing a thin film transistor array substrate of a liquid crystal display, comprising the steps of: (A) forming on a substrate a gate line and a crossing data line that are separated by a gate insulating film, a thin film transistor adjacent to the crossing, a gate link and a gate pad that extends from the gate line, a data pad under the gate insulating film, and a data link that extends from the data pad toward the data line; (B) forming a protective film over the entire surface of the substrate after completing step (A); (C) defining a plurality of first contact holes and second contact holes through the protective film and through the gate insulating film; wherein the first contact holes expose the data link, and wherein the second contact holes expose the data pad; (D) defining a plurality of third contact holes through the protective film, wherein the third contact holes expose the data line; (E) forming a pixel electrode that is electrically connected to the thin film transistor and a data pad protection electrode that is connected to the data link via the first contact holes, to the data pad via the second contact holes, and to the data line via the third contact holes.