Patent ID: 9728560
Date: 2017-08-08
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, a second metal layer formed on the first insulation layer, a first active layer formed on the second metal layer and contacting the first insulation layer, a second insulation layer formed on the first active layer and the second metal layer and covering the first insulation layer, a second active layer formed on the second insulation layer, a third metal layer formed on the second active layer and the second insulation layer, a passivation layer formed on the second active layer and the third metal layer and covering the second insulation layer, and a pixel electrode layer formed on the passivation layer and contacting the third metal layer.