A display device comprising: a substrate having an active area and a non-active area; a light-emitting element disposed on the substrate; an encapsulation unit disposed on the light-emitting element, the encapsulation unit comprising a plurality of inorganic encapsulation layers (142, 146) and at least one organic encapsulation layer disposed between the inorganic encapsulation layers; a plurality of touch sensors disposed on the encapsulation unit, each touch sensor comprising a touch electrode and a bridge electrode; at least one dam arranged between the active area and the non-active area; and at least one first planarization layer disposed in the non-active area, a touch insulating film disposed on the encapsulation unit between the touch electrode and bridge electrode, and a routing line disposed in the non-active area, wherein: a side surface of the first planarization layer and a side surface of the encapsulation unit face each other; at least one of the plurality of inorganic encapsulation layers is disposed between the side surface of the first planarization layer and the at least one organic encapsulation layer of the encapsulation unit; one of the plurality of inorganic encapsulation layers, the routing line, the touch insulating film and the first planarization layer overlap one another in the non-active area; the at least one dam comprises a first dam and a second dam, and the first planarization layer is disposed to fill a space between the first dam and second dam; the routing line is disposed above the dam so as to intersect or cross the first and second dams (106a, 106b); the routing line is disposed so as to cover a side surface of the organic encapsulation layer and an upper surface of the first planarization layer; a step formed by a height of the first and second dams (106a, 106b) is planarized by the first planarization layer; and the routing line is formed flat on the step. a substrate having an active area and a non-active area; a light-emitting element disposed on the substrate; an encapsulation unit disposed on the light-emitting element, the encapsulation unit comprising a plurality of inorganic encapsulation layers (142, 146) and at least one organic encapsulation layer disposed between the inorganic encapsulation layers; a plurality of touch sensors disposed on the encapsulation unit, each touch sensor comprising a touch electrode and a bridge electrode; at least one dam arranged between the active area and the non-active area; and at least one first planarization layer disposed in the non-active area, a touch insulating film disposed on the encapsulation unit between the touch electrode and bridge electrode, and a routing line disposed in the non-active area, wherein: a side surface of the first planarization layer and a side surface of the encapsulation unit face each other; at least one of the plurality of inorganic encapsulation layers is disposed between the side surface of the first planarization layer and the at least one organic encapsulation layer of the encapsulation unit; one of the plurality of inorganic encapsulation layers, the routing line, the touch insulating film and the first planarization layer overlap one another in the non-active area; the at least one dam comprises a first dam and a second dam, and the first planarization layer is disposed to fill a space between the first dam and second dam; the routing line is disposed above the dam so as to intersect or cross the first and second dams (106a, 106b); the routing line is disposed so as to cover a side surface of the organic encapsulation layer and an upper surface of the first planarization layer; a step formed by a height of the first and second dams (106a, 106b) is planarized by the first planarization layer; and the routing line is formed flat on the step. a side surface of the first planarization layer and a side surface of the encapsulation unit face each other; at least one of the plurality of inorganic encapsulation layers is disposed between the side surface of the first planarization layer and the at least one organic encapsulation layer of the encapsulation unit; one of the plurality of inorganic encapsulation layers, the routing line, the touch insulating film and the first planarization layer overlap one another in the non-active area; the at least one dam comprises a first dam and a second dam, and the first planarization layer is disposed to fill a space between the first dam and second dam; the routing line is disposed above the dam so as to intersect or cross the first and second dams (106a, 106b); the routing line is disposed so as to cover a side surface of the organic encapsulation layer and an upper surface of the first planarization layer; a step formed by a height of the first and second dams (106a, 106b) is planarized by the first planarization layer; and the routing line is formed flat on the step.