An organic light-emitting display device includes first through third pixels, wherein each of the first through third pixels comprises a first electrode, a second electrode which faces the first electrode, an organic light-emitting layer which is disposed between the first electrode and the second electrode. The first pixel includes a first color filter material, the second pixel includes a second color filter material, and the third pixel includes a third color filter material. The third pixel comprises a first transmitting region in which the third color filter material is not disposed and which is configured to allow a substantial amount of light emitted from the organic light-emitting layer of the third pixel to transmit therethrough.