Patent ID: 9698172
Date: 2017-07-04
CPC Classifications: H01L

Claim:
1. A thin-film transistor (TFT) substrate structure, comprising a Switching TFT and a Driving TFT, wherein the Switching TFT comprises a first active layer, and the Driving TFT comprises a second active layer, and the first active layer and the second active layer are made of the same or different materials and the electrical properties of the Switching TFT and the Driving TFT are different; wherein the TFT substrate comprises a substrate; a first metal layer formed on the substrate; a first insulation layer formed on the first metal layer and covering the substrate and the first metal layer; the first active layer formed on the first insulation layer; an etching stopper layer formed on the first active layer; a second metal layer formed on the first insulation layer and the etching stopper layer and covering the first active layer; a second insulation layer formed on the second metal layer and covering the first insulation layer; the second active layer formed on the second insulation layer; a third metal layer formed on the second insulation layer and covering two ends of the second active layer; a passivation layer formed on the third metal layer and the second active layer and covering the second insulation layer; and a pixel electrode layer formed on the passivation layer and contacting the third metal layer.