Patent ID: 7635616

Claim:
A method of manufacturing a thin film resistor liquid crystal display (TFT LCD) array substrate, comprising the steps of: step A of depositing a gate metal layer, a gate insulating dielectric layer, a semiconductor material layer and an ohmic contact material layer in order on a substrate, and patterning thereof using a first gray tone mask and photoresist into gate lines and gate electrodes, gate insulating layers, and semiconductor layers and ohmic contact layers, respectively, wherein the photoresist disposed on the ohmic contact layers is not stripped off; step B of depositing an isolation insulating dielectric layer on the substrate after step A, and then stripping off the photoresist to thereby remove the isolation insulating dielectric layer disposed on the ohmic contact layers; step C of depositing in sequence a pixel electrode layer and a source/drain electrode metal layer on the substrate after step B, and then patterning thereof using a second gray tone mask and photoresist into pixel electrodes, source/drain electrodes and data lines, wherein each of the ohmic contact layers is partially removed to partially expose the semiconductor layer thereunder; and step D of depositing a passivation layer on the substrate after step C which at least covers the exposed semiconductor layers.