Patent ID: 7133113

Claim:
A method of manufacturing a substrate for a liquid crystal display, comprising the steps of: forming a metal layer to form drain bus lines, drain bus line terminals, and pixel electrodes on a base substrate; forming a photosensitive material layer on the metal layer by applying a photosensitive material thereto; exposing the photosensitive material layer above the pixel , electrodes and the drain bus line terminals with a low light exposure less than a required light exposure; developing the photosensitive material layer to form an etching mask that is smaller in thickness in regions above the pixel electrodes and the drain bus line terminals than in regions above the drain bus lines; etching the metal layer using the etching mask to form the drain bus lines, the drain bus line terminals, and the pixel electrodes; and performing an ashing process to remove the etching mask on the pixel electrodes and the drain bus line terminals.