An organic light-emitting display device includes a thin film transistor, a first insulating layer, a first electrode a second insulating layer, an organic emission layer, a second electrode, a first auxiliary layer in a first region on the second electrode and having a first edge, a third electrode in a second region, on the second electrode and having a second edge contacting the first edge of the first auxiliary layer, and a second auxiliary layer on at least the first region and having a refractive index higher than the first auxiliary layer.