An organic light-emitting diode (OLED) display is disclosed. In one aspect, the OLED display includes a substrate having a plurality of pixel areas, which serves as a light-emitting area, and a non-pixel area, which serves as a non-light-emitting area. The OLED display also includes a plurality of first electrodes formed over the substrate in areas respectively corresponding to the pixel areas and a plurality of organic light-emitting layers formed over the first electrodes. The OLED display further includes a pixel defining layer formed in the non-pixel area of the substrate to cover a boundary surface of the organic light-emitting layers and to define the pixel areas, and a second electrode formed over the organic light-emitting layers and the pixel defining layer.