Abstract: An organic light emitting display device includes a substrate including a light-emitting region and a transparent region; a first transistor disposed in the light-emitting region, a second transistor disposed in the light-emitting region and disposed adjacent to the first transistor; a capacitor disposed in the light-emitting region, and disposed adjacent to the first transistor, and including a first capacitor electrode and a second capacitor electrode overlapping with the first capacitor electrode; and a pixel defining layer disposed on the first transistor, the second transistor and the capacitor, and including a first opening disposed in the light-emitting region and a second opening disposed in the transparent region, and including an opaque material.