The invention discloses a display device which is used for solving the problem that an existing display cannot meet the demand of people for multifunction. The display device comprises a display panel, a collimating optical element located on the light outgoing side of the display panel and a light modulation element located on the light outgoing side of the collimating optical element, wherein the collimating optical element is used for modulating first light rays emitted by the display panel into collimated second light rays and emitting the second light rays; the light modulation element is used for adjusting an outgoing angle of the second light rays in the light modulation element. The first light rays emitted by the display panel are modulated by the collimating optical element into the collimated second light rays, the outgoing angle of the second light rays in the light modulation element is adjusted by the aid of beam splitting function of the light modulation element, and accordingly, the direction of outgoing light of the display device is controllable.