A display device includes a substrate, a thin film transistor disposed on the substrate, where the thin film transistor includes a drain electrode, a passivation layer disposed on the substrate covering the thin film transistor, a common electrode disposed on the passivation layer, where the common electrode receives a common voltage, a liquid crystal layer disposed in a microcavity layer on the common electrode, a roof layer disposed covering the liquid crystal layer, and a pixel electrode disposed on the roof layer, and a method of manufacturing the display device is provided.