A display device includes a display panel which displays an image and a lenticular lens panel disposed above the display panel, where a lenticular lens area and a sealing area adjacent to the lenticular lens area are defined in the lenticular lens panel. The lenticular lens panel includes a first substrate disposed on the display panel, a second substrate disposed opposite to the first substrate, an insulating layer disposed between the first substrate and the second substrate, where a plurality of lenticular lens surfaces overlapping the lenticular lens area and a groove overlapping the sealing area are defined on the insulating layer, a sealing member disposed in the groove, where the sealing member combines the first substrate with the insulating layer, and a plurality of liquid crystal molecules disposed between the lenticular lens surfaces and the first substrate.