An organic light-emitting diode (OLED) display is disclosed. In one aspect, the OLED display includes a display substrate including a display area displaying an image and a peripheral area surrounding the display area. The OLED display also includes an encapsulation substrate facing the display substrate and a sealant bonding the display substrate to the encapsulation substrate. The display substrate includes a substrate, a scan driver formed over the substrate in the peripheral area and including a common voltage line applying a common voltage to the display area. The display substrate also includes a pixel defining layer formed above the common voltage line. The sealant is formed over the scan driver and contacts an upper surface of the pixel defining layer.