Patent ID: 7027114

Claim:
A method of manufacturing an array substrate for an LCD device comprising: forming a gate line and a gate electrode extending therefrom on an insulating substrate; sequentially forming a gate insulating layer, a semiconductor layer and a metal layer on the insulating substrate including the gate electrode; depositing a photoresist on the metal layer, and forming a photoresist pattern having different thickness therein by performing diffraction exposure and developing process to the photoresist; selectively removing the metal layer, the semiconductor layer, and the gate insulating layer by using the photoresist pattern as a mask; ashing the photoresist pattern; forming a data line substantially perpendicular to the gate line to define a pixel region, a source electrode extending from the data line, and a drain electrode formed at a predetermined interval from the source electrode by selectively removing the metal layer using the ashed photoresist pattern as a mask; depositing a photosensitive film on the insulating substrate having the source and drain electrodes thereon, and forming a color filter having a contact hole exposing a predetermined portion of the drain electrode in a thermal print method; and forming a pixel electrode above the color filter to be connected with the drain electrode through the contact hole.