Patent ID: 8173457

Claim:
A method of fabricating a TFT array substrate comprising: forming a gate material on an entire surface of a substrate; patterning the gate material to form a gate pattern including a gate line, a gate electrode pattern and a gate pad electrode pattern; forming a gate insulating layer on the entire surface of the substrate including the gate pattern; forming a semiconductor material including a semiconductor layer and an ohmic contact layer on the gate insulating layer; patterning the semiconductor layer and the ohmic contact layer to form a semiconductor pattern including a semiconductor layer pattern and an ohmic contact layer pattern above the gate electrode pattern; forming a data material on the entire surface of the substrate including the semiconductor pattern; patterning the data material to form source and drain electrode patterns at a predetermined interval from each other, above the data line, the data pad electrode and the ohmic contact layer pattern; removing the ohmic contact layer exposed between the source and drain electrode patterns; and forming a passivation layer on the entire surface of the substrate from which the ohmic contact layer exposed between the source and drain electrode patterns is removed, wherein at least one of the steps of removing the ohmic contact layer pattern, patterning the gate material, patterning the semiconductor layer and the ohmic contact layer, and patterning the data material comprises a first laser scribing process using a laser beam.