Patent ID: 7439544

Claim:
An image TFT array, comprising: a substrate; a thin film transistor structure disposed on the substrate; a storage capacitor structure disposed on the substrate and sequentially composed of a first metal layer formed by a first photolithographic and etching process, a first insulating layer, a second metal layer formed by a second photolithographic and etching process, a second insulating layer, an amorphous-silicon layer, a doping layer and a first through hole formed by a third photolithographic and etching process, and a third metal layer, a passivation layer; and a common electrode structure disposed on the substrate and sequentially composed of the first metal layer, the first insulating layer, the second insulating layer, the amorphous-silicon layer, the doping layer, the third metal layer connecting to the first metal layer through a third through hole formed by the third photolithographic and etching process, the third metal layer, and the passivation layer, and the first insulating layer, the second insulating layer, the amorphous-silicon layer and the doping layer in the common electrode structure being formed by the third photolithographic and etching process.