Patent ID: 8049218
Filing Date: 2011-11-01
Classification: H01L

Abstract:
1. A thin film transistor liquid crystal display (TFT LCD) array substrate, comprising: a substrate; a gate line and a gate electrode formed integrally with the gate line, which are formed on the substrate; a first insulating layer and a semiconductor layer formed sequentially on the gate line and the gate electrode; a second insulting layer formed on the substrate and covering sidewalls of the gate line and the gate electrode, the first insulating layer, and the semiconductor layer, wherein the semiconductor layer and the second insulating layer collectively form a flat top surface; an etching stop layer formed on a central portion of the semiconductor layer and exposing a part of the semiconductor layer on both sides of the etching stop layer; an ohmic contact layer formed on each of the exposed parts of the semiconductor layer and on the side portions of the etching stop layer, to provide a trench formed therebetween in a TFT channel region; a first and a second source/drain electrodes formed on the ohmic contact layer, on each side of the trench and opposing each other across the TFT channel region; a passivation layer formed on the first and second source/drain electrodes and the second insulating layer, having a via hole formed in the passivation layer over the second source/drain electrode; and a pixel electrode formed on the passivation layer and connected with the second source/drain electrode through the via hole.