An organic light emitting diode display includes a first substrate, the first substrate including at least one organic light emitting diode and a pixel defining layer having an opening portion defining a light emitting region of the organic light emitting diode, protruding portions increasingly protruding on the pixel defining layer as the protruding portions approach the edges of the first substrate, a second substrate disposed opposite to the first substrate, a sealing member bonding the first substrate to the second substrate, and filler in a space between the first substrate and the second substrate.