An organic light-emitting display device comprising: a substrate including a display area and an edge area surrounding the display area, wherein in the display area, sub-pixels are arranged in a matrix and include an emission area and a non-emission area around the emission area; a driving thin-film transistor (D-Tr) provided in each sub-pixel on the substrate; an organic light-emitting diode in the emission area, the organic light-emitting diode including an anode connected to the driving thin-film transistor (D-Tr), a cathode, and an organic light-emitting layer between the anode and the cathode; an auxiliary electrode (130; 131, 132) in the non-emission area; an insulation unit having a first hole exposing the auxiliary electrode; a bank having an opening in the emission area to expose the anode; and a first protruding pattern on the insulation unit, wherein the first protruding pattern protrudes into the first hole and overlaps the exposed auxiliary electrode, forming an undercut structure above the auxiliary electrode, and wherein the cathode is in direct contact with the exposed auxiliary electrode and is overlapped by the first protruding pattern, characterized in that: the insulation unit includes an inorganic insulation film and an organic insulation film, which are sequentially stacked one on top of the other, wherein the bank is disposed on a surface of the insulation unit, wherein the first protruding pattern includes a portion of the bank, the bank having a first sub-hole corresponding to the auxiliary electrode, the first sub-hole being smaller than the first hole in the insulation unit, wherein the organic light-emitting layer is disposed on the exposed auxiliary electrode except for a portion of the exposed auxiliary electrode overlapped by the first protruding pattern in the non-emission area, and wherein the cathode is disposed on the organic light-emitting layer and on the portion of the exposed auxiliary electrode overlapped by the first protruding pattern. a substrate including a display area and an edge area surrounding the display area, wherein in the display area, sub-pixels are arranged in a matrix and include an emission area and a non-emission area around the emission area; a driving thin-film transistor (D-Tr) provided in each sub-pixel on the substrate; an organic light-emitting diode in the emission area, the organic light-emitting diode including an anode connected to the driving thin-film transistor (D-Tr), a cathode, and an organic light-emitting layer between the anode and the cathode; an auxiliary electrode (130; 131, 132) in the non-emission area; an insulation unit having a first hole exposing the auxiliary electrode; a bank having an opening in the emission area to expose the anode; and a first protruding pattern on the insulation unit, wherein the first protruding pattern protrudes into the first hole and overlaps the exposed auxiliary electrode, forming an undercut structure above the auxiliary electrode, and wherein the cathode is in direct contact with the exposed auxiliary electrode and is overlapped by the first protruding pattern, characterized in that: the insulation unit includes an inorganic insulation film and an organic insulation film, which are sequentially stacked one on top of the other, wherein the bank is disposed on a surface of the insulation unit, wherein the first protruding pattern includes a portion of the bank, the bank having a first sub-hole corresponding to the auxiliary electrode, the first sub-hole being smaller than the first hole in the insulation unit, wherein the organic light-emitting layer is disposed on the exposed auxiliary electrode except for a portion of the exposed auxiliary electrode overlapped by the first protruding pattern in the non-emission area, and wherein the cathode is disposed on the organic light-emitting layer and on the portion of the exposed auxiliary electrode overlapped by the first protruding pattern. the insulation unit includes an inorganic insulation film and an organic insulation film, which are sequentially stacked one on top of the other, wherein the bank is disposed on a surface of the insulation unit, wherein the first protruding pattern includes a portion of the bank, the bank having a first sub-hole corresponding to the auxiliary electrode, the first sub-hole being smaller than the first hole in the insulation unit, wherein the organic light-emitting layer is disposed on the exposed auxiliary electrode except for a portion of the exposed auxiliary electrode overlapped by the first protruding pattern in the non-emission area, and wherein the cathode is disposed on the organic light-emitting layer and on the portion of the exposed auxiliary electrode overlapped by the first protruding pattern.