Patent ID: 7916230

Claim:
A pixel unit of a thin film transistor liquid crystal display (TFT-LCD) array substrate, comprising: a substrate; a TFT formed on the substrate; a passivation layer covering the TFT; and a pixel electrode connected with the TFT, wherein the TFT comprises: a gate island formed by a gate electrode, a first insulating layer, an active layer, and an ohmic contact layer stacked sequentially on the substrate, wherein the ohmic contact layer is formed in a source region and a drain region and exposes the active layer in a channel region between the source region and drain region; a second insulating layer, covering the gate island and forming on the gate island an opening through which the source region, the drain region and the channel region are exposed; a source electrode and a drain electrode, formed on the second insulating layer and electrically connected with the ohmic contact layer in the source region and the drain region, respectively, and wherein the pixel electrode is formed on the second insulating layer and is connected with the drain electrode of the TFT.