A flexible organic light emitting display device comprising: a flexible substrate including: a display area (DA) and a non-display area (NA), wherein the display area (DA) of the flexible substrate is an area on which an image is actually displayed; wherein the non-display area (NA) of the flexible substrate is an area on which no image is displayed; and wherein the non-display area (NA) of the flexible substrate is positioned at a peripheral or edge portion of the display area (DA) of the flexible substrate and is adjacent to the display area (DA); wherein at least some portion of the display area (DA) is formed in a substantially flat area extending along a plane, and wherein a bending area (BA) is adjacent to the substantially flat area and bending away from the plane, wherein the bending area (BA) corresponds to the entire non-display area (NA); and a plurality of wires formed on the non-display area (NA), wherein the plurality of wires including a first group of wires each formed on the separation layer and to extend in a first direction in the non-display area (NA) and a second group of wires each formed below the separation layer and to extend in the first direction in the non-display area (NA), the first direction being a bending direction in which the flexible substrate is bent, wherein the first direction is substantially perpendicular to a boundary line between the substantially flat area and the bending area (BA); wherein a separation layer is formed between the first group of wires and the second group of wires to insulate the first group of wires from the second group of wires , wherein the first group of wires extending in the first direction in the non-display area (NA) and the second group of wires extending in the first direction in the non-display area (NA) cross each other in the non-display area (NA); and wherein each wire of the first group of wires and each wire of the second group of wires is formed by a series of diamond shapes that are connected to each other. a display area (DA) and a non-display area (NA), wherein the display area (DA) of the flexible substrate is an area on which an image is actually displayed; wherein the non-display area (NA) of the flexible substrate is an area on which no image is displayed; and wherein the non-display area (NA) of the flexible substrate is positioned at a peripheral or edge portion of the display area (DA) of the flexible substrate and is adjacent to the display area (DA); wherein at least some portion of the display area (DA) is formed in a substantially flat area extending along a plane, and wherein a bending area (BA) is adjacent to the substantially flat area and bending away from the plane, wherein the bending area (BA) corresponds to the entire non-display area (NA); and a plurality of wires formed on the non-display area (NA), wherein the plurality of wires including a first group of wires each formed on the separation layer and to extend in a first direction in the non-display area (NA) and a second group of wires each formed below the separation layer and to extend in the first direction in the non-display area (NA), the first direction being a bending direction in which the flexible substrate is bent, wherein the first direction is substantially perpendicular to a boundary line between the substantially flat area and the bending area (BA); wherein a separation layer is formed between the first group of wires and the second group of wires to insulate the first group of wires from the second group of wires , wherein the first group of wires extending in the first direction in the non-display area (NA) and the second group of wires extending in the first direction in the non-display area (NA) cross each other in the non-display area (NA); and wherein each wire of the first group of wires and each wire of the second group of wires is formed by a series of diamond shapes that are connected to each other. <EOS>