Organic light-emitting display apparatus and method of manufacturing the same

A method of manufacturing an organic light-emitting display apparatus, the method comprising:

• forming an organic film over a substrate comprising a major surface;
• selectively irradiating light to an area of the organic film while not irradiating the light to another area of the organic film to form a first refractive index layer portion that is disposed in the non-irradiating area and a second refractive index layer portion that is disposed in the light-irradiating area and contacts the first refractive index layer portion, wherein the first refractive index layer portion has a first refractive index and the second refractive index layer portion has a second refractive index greater than the first refractive index;
• forming, over the first refractive index layer portion, a pixel electrode that comprises a reflective layer;
• forming a pixel-defining film over the second refractive index layer portion;
• forming, over the pixel electrode, an intermediate layer that comprises an organic light emission layer;
• and
• forming, over the intermediate layer and the pixel-defining film, an opposite electrode that comprises a reflective layer.