A display device and a method of manufacturing a display device are provided. A display device includes a substrate; a display area on the substrate and configured to display an image; a pad portion on at least one edge of the substrate, the pad portion including at least one sink portion; an anisotropic conductive film on the pad portion and filling the at least one sink portion, the anisotropic conductive film spaced apart from an end of the substrate; and a flexible printed circuit board on the anisotropic conductive film and electrically connected to the pad portion.