An organic light emitting display device includes a first substrate, a light emitting structure, a light transmitting member, and a second substrate. The first substrate includes a pixel region and a transparent region. The light emitting structure is positioned in the pixel region of the first substrate. The light transmitting member is positioned in the transparent region. The second substrate is disposed on the light emitting structure and the light transmitting member. The light is not refracted in interfaces between the light transmitting member and the first substrate and between the light transmitting member and the second substrate.