An organic light emitting display, comprising: an organic light emitting display panel including a pixel unit to display an image, a plurality of first power source pads (P ELVDD) and second power source pads (P ELVSS) to supply voltages to the pixel unit; a voltage supplier Flexible Printed Circuit Board including a plurality of pads respectively electrically coupled to the plurality of first and second power source pads (P ELVDD, P ELVSS); and a driving board configured to generate a first voltage (ELVDD) and a second voltage (ELVSS) different from the first voltage and to transmit the first voltage and the second voltage to the voltage supplier Flexible Printed Circuit Board; wherein the plurality of first power source pads (P ELVDD) are arranged at a first edge and a second edge of the pixel unit, the second edge being facing the first edge, the plurality of first power source pads (P ELVDD) are supplied by the first voltage (ELVDD) received from the voltage supplier Flexible Printed Circuit Board via the plurality of pads, the plurality of second power source pads (P ELVSS) are arranged at a third edge and a fourth edge of the pixel unit, the fourth edge being facing the third edge and adjacent to the first and second edges, and the plurality of second power source pads (P ELVSS) are supplied by the second voltage (ELVSS) received from the voltage supplier Flexible Printed Circuit Board via the plurality of pads, characterised in that the voltage supplier Flexible Printed Circuit Board is arranged on the outer circumference of the organic light emitting display panel so as to not overlap the pixel unit, and the plurality of pads are overlapped with the plurality of first and second power source pads without overlapping with the pixel unit. an organic light emitting display panel including a pixel unit to display an image, a plurality of first power source pads (P ELVDD) and second power source pads (P ELVSS) to supply voltages to the pixel unit; a voltage supplier Flexible Printed Circuit Board including a plurality of pads respectively electrically coupled to the plurality of first and second power source pads (P ELVDD, P ELVSS); and a driving board configured to generate a first voltage (ELVDD) and a second voltage (ELVSS) different from the first voltage and to transmit the first voltage and the second voltage to the voltage supplier Flexible Printed Circuit Board; wherein the plurality of first power source pads (P ELVDD) are arranged at a first edge and a second edge of the pixel unit, the second edge being facing the first edge, the plurality of first power source pads (P ELVDD) are supplied by the first voltage (ELVDD) received from the voltage supplier Flexible Printed Circuit Board via the plurality of pads, the plurality of second power source pads (P ELVSS) are arranged at a third edge and a fourth edge of the pixel unit, the fourth edge being facing the third edge and adjacent to the first and second edges, and the plurality of second power source pads (P ELVSS) are supplied by the second voltage (ELVSS) received from the voltage supplier Flexible Printed Circuit Board via the plurality of pads, characterised in that the voltage supplier Flexible Printed Circuit Board is arranged on the outer circumference of the organic light emitting display panel so as to not overlap the pixel unit, and the plurality of pads are overlapped with the plurality of first and second power source pads without overlapping with the pixel unit.