1. In a dispaly device for three-dimensional television provided with two display tubes for producing two images, with light-selecting means for making the light from the two images different and with super-position means for forming a composite image from the two images; the improvement wherein the display device comprises a projection display tube and a direct-view display tube, a first filter having alternatingly light-reflecting and light-dispersing areas and light transmissive, light-selecting areas positioned in front of the display screen of the direct-view display tube, the display device including light projection means having a second light selecting filter for projecting the image produced by the projection display tube by way of the light-refleting and light-dispersing areas of said first filter.