A 3D display device, including a plurality of display means located in tandem on the same line of sight of an observer at a given distance; a control means which controls the plurality of display means to display an image obtained from the same object on almost the same screen position in each of the plurality of display means by mutually changing the brightness so that a 3D image may be displayed from the sight of the observer; wherein all the display means or at least one display means except for the display means located at the backmost position from the sight of the observer comprise a device for displaying having an image displaying surface which is self-luminescent and has light transmittance, and the device for displaying comprises an organic EL element provided with an organic EL layer containing a phosphorescent compound.