A displaying device and a driving method thereof, wherein the displaying device includes a first display panel, a second display panel and a driving circuit; the first display panel includes a plurality of first pixel units that are able to display a color, wherein each of the first pixel units includes a plurality of sub-pixel units; and the second display panel is provided on a light exiting side of the first display panel, including a plurality of second pixel units; wherein a distribution density of the plurality of second pixel units is greater than a distribution density of the plurality of sub-pixel units.