An organic light emitting device includes a substrate including a display unit configured to display an image and a peripheral portion surrounding the display unit, a plurality of scan lines on the substrate and extending in a first direction, a plurality of data lines on the substrate and intersecting the scan lines in a second direction, a plurality of pixels at the display unit and connected to the scan lines and the data lines, a repair ring surrounding the display unit, a plurality of driving pads on the peripheral portion and connected to ends of the plurality of data lines, a pair of dummy driving pads on the peripheral portion and connected to ends of the repair ring, and a driving circuit configured to transmit a data signal to the plurality of driving pads and to the pair of dummy driving pads.