An organic light emitting diode (OLED) display is disclosed. In one aspect, the OLED display includes an at least partially curved display panel and a cover window disposed in an external side of the front side of the display panel, and formed in the shape corresponding to the display panel. The OLED display further includes a set frame disposed in an external side of the rear side of the display panel, and coupled with the cover window. The cover window is not made of a single material. That is, portion covering the display panel and a portion coupled to the set frame are made of different materials, respectively.