Patent ID: 7091165

Claim:
A fabricating method of an array substrate for a liquid crystal display device, comprising: forming a gate line and a gate electrode of copper on a substrate through a photo lithographic process using a photoresist; removing the photoresist remaining after forming the gate line and the gate electrode with a composition including about 0.1% to about 10% by weight of an alkylbenzenesulfonic compound, about 10% to about 99% by weight of a glycolether compound, and about 0.5% to about 5% by weight of a corrosion inhibitor; forming a first insulating layer on the gate line and the gate electrode; forming a semiconductor layer on the first insulating layer over the gate electrode; forming source and drain electrodes on the semiconductor layer, and a data line connected to the drain electrode; forming a second insulating layer on the source and drain electrodes and the data line; and forming a pixel electrode on the second insulating layer.