Patent ID: 8404507

Claim:
A method for manufacturing a thin film transistor liquid crystal display (TFT-LCD) array substrate comprising: step 1 of depositing a layer of gate metal thin film on a substrate and patterning the gate metal thin film to form a pattern including a gate line and a gate electrode; step 2 of depositing sequentially a gate insulating layer, a semiconductor layer, a doped semiconductor layer, and a layer of source/drain metal thin film on the substrate after step 1, and patterning the layers to form patterns including a data line, a source electrode, a drain electrode, and a thin film transistor (TFT) channel region; and step 3 of depositing a passivation layer on the substrate after step 2, then patterning the passivation layer with a pattern of photoresist as a mask to form patterns including a passivation layer via hole and a partition groove and retain a part of the passivation layer which is in a region where a pixel electrode pattern is to be formed, removing a part of the photoresist which is in the region where the pixel electrode pattern is to be formed and retaining the other part of the photoresist used in the patterning process for patterning the passivation layer, then depositing a transparent conductive thin film, and forming the pixel electrode pattern through a lift-off process, wherein the passivation layer via hole is located above the drain electrode, the partition groove is formed at the periphery of the pixel electrode in the passivation layer, the pixel electrode is formed on the top of the passivation layer and connected with the drain electrode via the passivation layer via hole.