A display device is provided. The display device includes a display panel. The display panel includes a substrate, a light-shielding layer, and a plurality of optical sensors. The light-shielding layer has a plurality of first aperture regions, a plurality of second aperture regions, and a plurality of third aperture regions. The second aperture regions are located between the first aperture regions and the third aperture regions. At least a portion of at least one of the optical sensors overlaps with at least one of the first aperture regions in a normal direction of the substrate. An area of at least one of the second aperture regions is greater than an area of at least one of the first aperture regions, and the area of the at least one of the second aperture regions is smaller than an area of at least one of the third aperture regions.