A display device comprising: a substrate comprising a display region (I) and a peripheral region (II) surrounding the display region (I); display structures at the display region of the substrate; a plurality of blocking structures at the peripheral region of the substrate, at least two of the blocking structures having different heights; an organic insulating layer on the display structures and at least one of the blocking structures; an inorganic layer on the organic insulating layer ; wirings under the organic insulating layer at the display region and the peripheral region of the substrate; an insulation layer covering the wirings; and a protection member on a portion of an outermost wiring of the wirings exposed by the insulation layer, wherein the protection member is disposed on an upper portion and a lateral portion of the insulation layer , wherein each of the display structures comprises: a pixel defining layer on the insulation layer and a spacer on the pixel defining layer; a first electrode on the insulation layer , wherein the pixel defining layer partially exposes the first electrode; a light emitting layer on the first electrode ; and a second electrode on the pixel defining layer , the spacer , and the light emitting layer , wherein the protection member is a wiring electrically coupling the outermost wiring of the wirings to the second electrode , and wherein the plurality of blocking structures include Z a plurality of insulating layer patterns a substrate comprising a display region (I) and a peripheral region (II) surrounding the display region (I); display structures at the display region of the substrate; a plurality of blocking structures at the peripheral region of the substrate, at least two of the blocking structures having different heights; an organic insulating layer on the display structures and at least one of the blocking structures; an inorganic layer on the organic insulating layer ; wirings under the organic insulating layer at the display region and the peripheral region of the substrate; an insulation layer covering the wirings; and a protection member on a portion of an outermost wiring of the wirings exposed by the insulation layer, wherein the protection member is disposed on an upper portion and a lateral portion of the insulation layer , wherein each of the display structures comprises: a pixel defining layer on the insulation layer and a spacer on the pixel defining layer; a first electrode on the insulation layer , wherein the pixel defining layer partially exposes the first electrode; a light emitting layer on the first electrode ; and a pixel defining layer on the insulation layer and a spacer on the pixel defining layer; a first electrode on the insulation layer , wherein the pixel defining layer partially exposes the first electrode; a light emitting layer on the first electrode ; and a second electrode on the pixel defining layer , the spacer , and the light emitting layer , wherein the protection member is a wiring electrically coupling the outermost wiring of the wirings to the second electrode , and wherein the plurality of blocking structures include Z a plurality of insulating layer patterns <EOS>