Patent ID: 8223312
Filing Date: 2012-07-17
Classification: G02F,H01L

Abstract:
1. A method of manufacturing a thin film transistor liquid crystal display (TFT-LCD) array substrate comprising: step 1 of depositing a gate metal thin film on a base substrate and forming patterns for a gate line and a gate electrode by a first patterning process; step 2 of sequentially depositing a gate insulating layer, a semiconductor layer and a barrier layer on the resultant substrate after step 1 and then forming a semiconductor pattern and a barrier layer pattern by a second patterning process, wherein the barrier layer pattern is positioned above the semiconductor pattern and a region of the semiconductor pattern other than that covered by the barrier layer pattern is treated to form ohmic contact regions, step 2 further including: step 3 of sequentially depositing a transparent conductive thin film and a source and drain metal thin film on the resultant substrate after step 2 and then forming patterns for a data line, a source electrode, a drain electrode, a thin film transistor (TFT) channel region and a pixel electrode by a third patterning process, wherein the source electrode and the drain electrode are respectively connected with ohmic contact regions of the semiconductor layer via the transparent conductive thin film remaining thereunder, the barrier layer covers the semiconductor layer in the TFT channel region, and the pixel electrode is directly connected with the drain electrode.