The display panel includes a display area including a pixel area, and a light blocking area which is adjacent to the pixel area, a first light emitting device which is in the pixel area of the display area and emits a light having a first wavelength range, a second light emitting device which is in the light blocking area of the display area and emits a light having a second wavelength range different from the first wavelength range, and a discoloration layer which is on the second light emitting device and is color-changeable by the light having the second wavelength range, the discoloration layer defining a first opening exposing the pixel area to outside the discoloration layer.