A display device includes a first substrate, a plurality of light-emitting elements on the first substrate and spaced from each other, wherein each of the plurality of light-emitting elements extends in a thickness direction of the first substrate, a common electrode on the first substrate and the plurality of light-emitting elements, a first insulating layer on the common electrode and the plurality of light-emitting elements, and a first reflective layer on side surfaces of the plurality of light-emitting elements with the first insulating layer therebetween, wherein the common electrode is in contact with a portion of the side surface of each of the plurality of light-emitting elements.