An organic light-emitting diode (OLED) display is disclosed. In one aspect, the OLED display includes a first substrate and a second substrate facing each other, a display unit formed between the first and second substrates and a sealant formed between the first and second substrates and bonding the first and second substrates. The sealant includes a sealing portion surrounding and sealing the display unit, the sealing portion having a plurality of first openings separate from each other along a circumferential direction of the display unit. The sealant also includes an adhesion reinforcing portion including a plurality of islands that are respectively formed inside the first openings and separate from the sealing portion.