<p>An organic light emitting device with an wide viewing angle is disclosed. The organic light emitting device comprises: a first electrode on a substrate; an organic light emitting layer on the first electrode; a second electrode on the organic light emitting layer; and an optical path difference compensation layer disposed between the substrate and the first electrode or on the upper part of the second electrode, wherein the optical path difference compensation layer can include at least one layer in which transmittance becomes smaller as an angle between an incident light and an incident surface of the optical path difference compensation layer gets larger.</p>
