A display device including a semiconductor light emitting device according to an embodiment can include a substrate, first assembly wiring and second assembly wiring alternately arranged on the substrate and spaced apart from each other, a planarization layer disposed on the first assembly wiring and the second assembly wiring and having a first opening, and a light emitting device disposed inside the first opening, wherein the first electrode overlaps the plurality of first assembly wirings and the plurality of second assembly wirings. The first electrode may be electrically connected to one of the first assembly wiring and the second assembly wiring.