A display device according to an embodiment includes a substrate, first assembly wiring and second assembly wiring that are spaced apart from each other on the substrate and each include a conductive layer and a clad layer on the conductive layer, a structure that is in contact with the second assembly wiring and has a reverse taper shape, a planarization layer that is disposed on the first assembly wiring and the second assembly wiring and has an opening, and a light emitting device that is disposed inside the opening and has a first electrode overlapping the first assembly wiring and the second assembly wiring, wherein the structure is disposed to cover a portion of an upper surface of the conductive layer of the second assembly wiring.