A color conversion panel includes: a substrate defining a first surface through which external light is incident to the substrate and a second surface which is opposite to the first surface and through which the external light exits the substrate; a reflective polarization film at the first surface of the substrate; and at the second surface of the substrate, a first color conversion layer and a second color conversion layer each on the second surface of the substrate; a polarization layer on the first color conversion layer and the second color conversion layer; and a planarization layer between the polarization layer and the first color conversion layer and between the polarization layer and the second color conversion layer.