An organic light emitting diode (OLED) display is disclosed. The organic light emitting diode (OLED) display includes an organic light emitter that has a first electrode, an organic emission layer, and a second electrode. The OLED also has an encapsulation substrate covering the organic light emitter and an assistance electrode disposed between the encapsulation substrate and the second electrode. The assistance electrode can be disposed in a non-light-emitting region between the organic light emitter and the second electrode, and can have a lower resistance than a resistance of the second electrode.