A flexible organic light emitting display device comprising: a flexible substrate including: a display area and a non-display area, wherein the display area of the flexible substrate is an area on which an image is actually displayed; wherein the non-display area of the flexible substrate is an area on which no image is displayed; and wherein the non-display area of the flexible substrate is positioned at a peripheral or edge portion of the display area of the flexible substrate and is adjacent to the display area; wherein at least some portion of the display area is formed in a substantially flat area extending along a plane, and wherein a bending area is adjacent to the substantially flat area and bending away from the plane, wherein the bending area corresponds to the entire non-display area; and a plurality of wires formed on the non-display area, 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 and a second group of wires each formed below the separation layer and to extend in the first direction in the non-display area, 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; 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 and the second group of wires extending in the first direction in the non-display area cross each other in the non-display area; 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 and a non-display area, wherein the display area of the flexible substrate is an area on which an image is actually displayed; wherein the non-display area of the flexible substrate is an area on which no image is displayed; and wherein the non-display area of the flexible substrate is positioned at a peripheral or edge portion of the display area of the flexible substrate and is adjacent to the display area; wherein at least some portion of the display area is formed in a substantially flat area extending along a plane, and wherein a bending area is adjacent to the substantially flat area and bending away from the plane, wherein the bending area corresponds to the entire non-display area; and a plurality of wires formed on the non-display area, 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 and a second group of wires each formed below the separation layer and to extend in the first direction in the non-display area, 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; 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 and the second group of wires extending in the first direction in the non-display area cross each other in the non-display area; 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.