PURPOSE: An organic light emitting display device is provided to prevent an organic light emitting layer from becoming damaged due to moisture and ultraviolet ray by including a capping layer with an ultraviolet blocking layer. CONSTITUTION: A first electrode is located on a first substrate(100). An organic light emitting layer(720) is located on the first electrode. A second electrode(730) is located on the organic light emitting layer. A capping layer covers an organic light emitting device(400) including the organic light emitting layer. The capping layer includes ultraviolet blocking materials which block ultraviolet rays from the outside to the organic light emitting layer.
