According to an aspect, a display device includes a display unit that includes a dielectric material between two substrates that face each other and a plurality of pixel circuits that apply an electric field to the dielectric material according to an image input gradation for each of a plurality of pixels arranged in a matrix, and displays an image using the plurality of pixels; a capacitance detection unit that outputs a detection signal of a magnitude corresponding to a value of capacitance of the dielectric material; and a control device determines, on the basis of the detection signal from the capacitance detection unit, that the display is normal when a correlation value of the capacitance to the image input gradation is in a predetermined correlation.