Patent ID: 8450746

Claim:
A pixel array substrate, comprising: a substrate; and a plurality of pixel structures disposed on the substrate, wherein each pixel structure comprises: a patterned metal layer, comprising a gate line and a common electrode line; an insulating layer covering the gate line and the common electrode line; a patterned semiconductor layer located on the insulating layer, wherein the patterned semiconductor layer comprises a channel layer and a photosensitive resistance layer, and the channel layer is located above the gate line and overlaps the gate line; and a data line layer located on the insulating layer, wherein the data line layer comprises a patterned first data line, a second data line and a third data line, the first and the second data lines are coupled to the channel layer respectively and combine with the channel layer and the gate line to compose an active component, the second data line and the third data line respectively are coupled to the photosensitive resistance layer and combine with the photosensitive resistance layer to compose a light detecting component.