Patent ID: 7414693

Claim:
A fabrication method of a liquid crystal display panel, comprising: forming a substrate including a plurality of thin film transistor array, the thin film transistor array having a thin film transistor at crossings of gate lines and data lines formed on a substrate, a gate pad part including a gate pad connected to the gate line and a data pad part including a data pad connected to the data line and a data pad protection electrode connected to the data pad; preparing a cutting-off plate having an opening region overlapped with the pad part of the substrate to expose the pad part of the substrate and a cutting-off region overlapped with a remainder part other than the pad part of the substrate, wherein the cutting-off plate of cutting-off region is formed by a metal other than molybdenum; arranging the cutting-off plate on the substrate so that the opening region overlaps with the pad part and the cutting-off region overlaps with the remainder part; and exposing entire surface of the gate pad and the data pad protection electrode of the pad part by a etching process using etching gas passing through opening region of the cutting-off plate without forming a photoresist pattern; wherein the step of forming the thin film transistor array substrate comprises the steps of: forming a gate pattern including a gate electrode of the thin film transistor, the gate line connected to the gate electrode and the gate pad connected to the gate line on the substrate by use of a first masking process; forming a gate insulation film on the substrate where the gate pattern is formed; forming a source electrode and a drain electrode of the thin film transistor, a data line connected to the source electrode, the data pad connected to the data line, a source/drain pattern including a storage electrode in a region overlapped with the gate line, a semiconductor pattern formed in the lower part according to the source/drain pattern on the gate insulation film by use of a second masking process; forming a transparent electrode pattern including a pixel electrode and the data pad protection electrode by use of a third masking process, the pixel electrode is directly connected to the drain electrode and the storage electrode, and the data pad protection electrode is formed for covering the data pad; and forming entirely a protection film on the substrate.