The present disclosure relates to a display device. The display device includes a substrate. The substrate includes a first display area, a second display area, a plurality of first pixels, a plurality of second pixels, and a plurality of diffraction patterns. The plurality of first pixels are disposed on the first display area. The plurality of second pixels are disposed on the second display area. The plurality of diffraction patterns are disposed on the second pixels When viewed in a plane orientation, an array density of the first pixels disposed in the first display area is greater than an array density of the second pixels disposed in the second display area.