Patent ID: 9735183
Date: 2017-08-15
CPC Classifications: H01L

Claim:
1. A manufacturing method for a thin film transistor (TFT) flat sensor comprising: depositing a first metal film on a substrate and forming a common electrode on the substrate with a first patterning process; successively depositing an insulating film and a second metal film on the substrate having the common electrode formed thereon, and forming a gate electrode by applying a second patterning process to the second metal film; applying a third patterning process to the deposited insulating film to form a common electrode insulating layer, wherein a first via hole is formed in the common electrode insulating layer at a location corresponding to the common electrode; depositing a transparent conductive film on the substrate having the common electrode, the common electrode insulating layer and the gate electrode formed thereon, and forming a first conductive film layer, acting as one polar plate of a storage capacitor, on the common electrode and the gate electrode with a fourth patterning process; the method further comprising: successively forming a gate insulating layer, an active layer, a second conductive film layer acting as another polar plate of the storage capacitor, a drain electrode and a source electrode, a protection layer, and a third conductive film layer for collecting carriers on the substrate having the first conductive film layer formed thereon, wherein the second conductive file layer is provided between the active layer and the source electrode, and a second via hole is formed in the protection layer at a location correspondinq to the source electrode.