An organic light emitting diode display according to the present invention includes a substrate and a plurality of pixels formed on the substrate. One pixel includes: a scan line formed on the substrate and transmitting a scan signal; a data line and a driving voltage line crossing the scan line and transmitting a data signal and a driving voltage, respectively; a switching thin film transistor connected to the scan line and the data line; a driving thin film transistor connected to a switching drain electrode of the switching thin film transistor; and an organic light emitting diode connected to a driving drain electrode of the driving thin film transistor. The plurality of pixels includes a separation pixel at which the driving voltage line is separated and a connection pixel at which the driving voltage line is connected.