Provided is a display device including a touch panel, the display device having a function of being suppressed from being charged with electricity. A display device including a touch panel includes a detection electrode of the touch panel, the detection electrode being provided on one surface of a display cell; a protective layer covering the detection electrode; and an optical film bonded to the protective layer, the optical film having an external shape smaller than that of the protective layer. The protective layer may be a single layer substantially formed of a conductive polymer and an insulating material, or may have a stack structure including an insulating layer and a conductive layer.