A display device includes: a first substrate having a display area and a non-display area on one side of the display area; a second substrate arranged opposite the first substrate; a display element arranged on the display area, the display element including a pixel electrode, an intermediate layer arranged on the pixel electrode, and an opposite electrode arranged on the intermediate layer; a power supply line arranged on the non-display area; and a conductive layer arranged on the power supply line and including the same material as the pixel electrode.