An organic light emitting display device comprising: a scan driver for driving a scan line and a light emitting control line, the scan line and the light emitting control line being formed parallel to each other, the scan driver being adapted to provide a scan signal and a light emitting control signal to the scan line and the light emitting control line, respectively; a data driver for driving a data line formed at a direction intersecting the scan line and the light emitting control line; a pixel disposed to be coupled with the scan line, the light emitting control line, and the data line; wherein the data driver is arranged to be coupled with the data line during a first period of one horizontal period for receiving a predetermined current from the pixel selected according to the scan signal, and for resetting a voltage value of a data signal using a compensation voltage generated when the predetermined current is received, and for providing the reset voltage value of the data signal to the pixel during a second period of the one horizontal period, the second period being a period other than the first period; an auxiliary line formed parallel to the data line, one side of the auxiliary line being coupled with a reference power supply (Vref) and another side of the auxiliary line being coupled with a current source (Imax); a connector disposed at a crossing area of the auxiliary line and the scan line, a first electrode of the connector being coupled to the auxiliary line and a second electrode of the connector being coupled to the scan line, the connector for electrically connecting the auxiliary line to a third electrode of the connector when a scan signal is supplied to the scan line; and a voltage transfer unit coupled with the third electrode of the connector for transferring a voltage supplied from the connector to the data driver, wherein the voltage value supplied from the voltage transfer unit to the data driver is set to a value obtained by subtracting a voltage value of a voltage drop of the auxiliary line from a voltage value of the reference power supply (Vref). a scan driver for driving a scan line and a light emitting control line, the scan line and the light emitting control line being formed parallel to each other, the scan driver being adapted to provide a scan signal and a light emitting control signal to the scan line and the light emitting control line, respectively; a data driver for driving a data line formed at a direction intersecting the scan line and the light emitting control line; a pixel disposed to be coupled with the scan line, the light emitting control line, and the data line; wherein the data driver is arranged to be coupled with the data line during a first period of one horizontal period for receiving a predetermined current from the pixel selected according to the scan signal, and for resetting a voltage value of a data signal using a compensation voltage generated when the predetermined current is received, and for providing the reset voltage value of the data signal to the pixel during a second period of the one horizontal period, the second period being a period other than the first period; an auxiliary line formed parallel to the data line, one side of the auxiliary line being coupled with a reference power supply (Vref) and another side of the auxiliary line being coupled with a current source (Imax); a connector disposed at a crossing area of the auxiliary line and the scan line, a first electrode of the connector being coupled to the auxiliary line and a second electrode of the connector being coupled to the scan line, the connector for electrically connecting the auxiliary line to a third electrode of the connector when a scan signal is supplied to the scan line; and a voltage transfer unit coupled with the third electrode of the connector for transferring a voltage supplied from the connector to the data driver, wherein the voltage value supplied from the voltage transfer unit to the data driver is set to a value obtained by subtracting a voltage value of a voltage drop of the auxiliary line from a voltage value of the reference power supply (Vref).