An organic light emitting display device comprising: an anode electrode in each of a plurality of pixels defined on a substrate; a bank and an organic emission layer on the anode electrode; a cathode electrode on the organic emission layer; and an auxiliary electrode connected to the cathode electrode, wherein the auxiliary electrode is provided on the bank, thereby the auxiliary electrode is disposed on a layer different from the anode electrode, wherein the bank comprises: a first bank disposed on each of one side and the other side of the anode electrode; wherein the auxiliary electrode is provided on the first bank, and a second bank disposed on the first bank and on the auxiliary electrode in an area of the auxiliary electrode other than a certain area of the auxiliary electrode in which the auxiliary electrode is connected to the cathode electrode, wherein the auxiliary electrode comprises in this order a lower auxiliary electrode, an upper auxiliary electrode, and a cover auxiliary electrode, wherein in the certain area the auxiliary electrode comprises the lower auxiliary electrode, the cover auxiliary electrode and a separation space between the lower auxiliary electrode and the cover auxiliary electrode; wherein the auxiliary electrode is connected to the cathode electrode through the separation space; wherein an oxidation rate of each of the lower auxiliary electrode and the cover auxiliary electrode is lower than an oxidation rate of the upper auxiliary electrode, and wherein a resistance of the upper auxiliary electrode is lower than a resistance of each of the lower auxiliary electrode and the cover auxiliary electrode; and wherein the cathode electrode is connected to the lower auxiliary electrode in the certain area. an anode electrode in each of a plurality of pixels defined on a substrate; a bank and an organic emission layer on the anode electrode; a cathode electrode on the organic emission layer; and an auxiliary electrode connected to the cathode electrode, wherein the auxiliary electrode is provided on the bank, thereby the auxiliary electrode is disposed on a layer different from the anode electrode, wherein the bank comprises: a first bank disposed on each of one side and the other side of the anode electrode; wherein the auxiliary electrode is provided on the first bank, and a second bank disposed on the first bank and on the auxiliary electrode in an area of the auxiliary electrode other than a certain area of the auxiliary electrode in which the auxiliary electrode is connected to the cathode electrode, a first bank disposed on each of one side and the other side of the anode electrode; wherein the auxiliary electrode is provided on the first bank, and a second bank disposed on the first bank and on the auxiliary electrode in an area of the auxiliary electrode other than a certain area of the auxiliary electrode in which the auxiliary electrode is connected to the cathode electrode, wherein the auxiliary electrode comprises in this order a lower auxiliary electrode, an upper auxiliary electrode, and a cover auxiliary electrode, wherein in the certain area the auxiliary electrode comprises the lower auxiliary electrode, the cover auxiliary electrode and a separation space between the lower auxiliary electrode and the cover auxiliary electrode; wherein the auxiliary electrode is connected to the cathode electrode through the separation space; wherein an oxidation rate of each of the lower auxiliary electrode and the cover auxiliary electrode is lower than an oxidation rate of the upper auxiliary electrode, and wherein a resistance of the upper auxiliary electrode is lower than a resistance of each of the lower auxiliary electrode and the cover auxiliary electrode; and wherein the cathode electrode is connected to the lower auxiliary electrode in the certain area.