An organic light-emitting diode (OLED) display and method of manufacturing the same are disclosed. In one aspect, the OLED display includes a substrate which includes non-emission regions and emission regions, a first electrode which is formed on each of the emission regions of the substrate, an organic light-emitting layer which is formed on the first electrode, a second electrode which is formed on the organic light-emitting layer and the substrate and a passivation layer which is formed on the second electrode. The passivation layer includes a first passivation layer which substantially overlaps the organic light-emitting layer and a second passivation layer which does not overlap the organic light-emitting layer, wherein the refractive index of the first passivation layer is higher than the refractive index of the second passivation layer.