Abstract
A pixel structure disposed on a substrate is provided. The pixel structure includes a display unit and a photo sensitive unit. The display unit includes an active device and a pixel electrode. The active device is disposed on the substrate, and the pixel electrode is electrically connected with the active device. The photo sensitive unit includes a photocurrent readout unit, a shielding electrode, a photosensitive dielectric layer and a transparent electrode. The shielding electrode is electrically connected with the photocurrent readout unit, and the photosensitive dielectric layer is disposed on the shielding electrode. The transparent electrode is disposed on photosensitive dielectric layer, wherein the photosensitive dielectric layer is placed in between the shielding electrode and the transparent electrode.