Organic light emitting display device

An organic light emitting display device, comprising:

• a substrate;
• a plurality of first electrodes on the substrate;
• a pixel defining layer on the substrate, the pixel defining layer defining a plurality of first openings which expose at least a part of the plurality of first electrodes, respectively;
• a red light emitting layer, a green light emitting layer, and a blue light emitting layer respectively on the plurality of first electrodes;
• a second electrode on the red light emitting layer, the green light emitting layer, and the blue light emitting layer;
• a low refractive index layer on the upper side of the second electrode, the low refractive index layer defining a plurality of second openings which overlap the plurality of first openings, respectively;
• and
• a high refractive index layer in the plurality of second openings,
• wherein each of a first gap between an edge of the first opening overlapping the red light emitting layer and an edge of the second opening overlapping the red light emitting layer, a second gap between an edge of the first opening overlapping the green light emitting layer and an edge of the second opening overlapping the green light emitting layer, and a third gap between an edge of the first opening overlapping the blue light emitting layer and an edge of the second opening overlapping the blue light emitting layer is constant irrespective of direction.