An organic light emitting display device includes a plurality of pixels defined on a substrate. Each of the plurality of pixels has a plurality of sub-pixels, and each of the plurality of sub-pixels has a light emitting area and a driving area. Widths in a first direction of the driving areas of the plurality of sub-pixels are identical to each other. A size of a light emitting area of a first sub-pixel of the plurality of sub-pixels is greater than a size of a light emitting area of a second sub-pixel of the plurality of sub-pixels.