Provided is an organic light emitting diode display device. The organic light emitting diode display device includes a polarizing plate, a substrate disposed on the polarizing plate, an overcoating layer disposed on the substrate and including a plurality of micro lenses, and a first electrode, an organic emission layer, and a second electrode of an organic emission element which is disposed on the overcoating layer, in which the micro lens includes a plurality of recesses and a wall surrounding the recesses and a reflective pattern is disposed in an area corresponding to the recess.