An organic light emitting diode includes: a substrate; an encapsulation substrate facing the substrate and including a transmission region through which light is transmitted and an absorption region through which the light is not transmitted; a sealant between the substrate and the encapsulation substrate; and a pixel unit between the substrate and the encapsulation substrate, and including a plurality of pixels respectively including an organic light emitting element. The absorption region of the encapsulation substrate includes photoreactive crystals.