An organic light emitting diode (OLED) display includes: a substrate; a scan line formed on the substrate and that transfers a scan signal; a data line and a driving voltage line that intersect the scan line and that transfer a data signal and a driving voltage, respectively; a switching thin film transistor (TFT) connected to the scan line and the data line; a driving TFT connected to the switching TFT and the driving voltage line; an OLED connected to the driving TFT; a storage capacitor connected between the driving voltage line and a driving gate electrode of the driving TFT; and a boosting capacitor connected to the storage capacitor, wherein the storage capacitor has at least one capacitor opening.