Patent ID: 11862641
Assignee: TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. An array substrate, comprising:
a substrate;
a photosensitive unit disposed on the substrate, wherein the photosensitive unit comprises a storage capacitor, a switch thin film transistor, and a photosensor located between storage capacitor and the switch thin film transistor;
a first electrode layer disposed on the substrate, wherein the first electrode layer comprises a first electrode, a second electrode, and a third electrode arranged in spaces;
a gate insulating layer disposed on the first electrode layer;
a semiconductor layer disposed in the gate insulating layer, wherein the semiconductor layer comprises a first semiconductor layer and a second semiconductor layer, the first semiconductor layer is disposed on the first electrode and the third electrode, and the second semiconductor layer is disposed on the second electrode;
a second electrode layer disposed on the first semiconductor layer, wherein the second electrode layer comprises a fourth electrode, a drain, and a source, the fourth electrode is disposed on the first electrode, and the drain and the source are disposed on two opposite edge regions of the third electrode;
an insulating layer disposed on the semiconductor layer; and
a transparent electrode layer disposed on the insulating layer, wherein the transparent electrode layer comprises a first transparent electrode and a second transparent electrode, the first transparent electrode is connected to the first electrode, and the second transparent electrode is connected to the second electrode and the drain;
wherein the photosensor is a photodiode structure, and a semiconductor structure in the photosensor comprises a N-type heavily doped amorphous silicon layer, an amorphous silicon layer, and a P-type heavily doped amorphous silicon layer arranged in layers.