A display device is provided, including: a reflective screen; and a display assembly comprising: a light source; a light modulator provided in a direction of propagation of the light beams and a reflective display located downstream the light modulator in an optical path of the display device, the light modulator is configured to modulate the light beams alternately at two different deflection angles, and the reflective display is configured to generate a first image in response to the light beam in a first direction and a second image in response to the light beam in a second direction; and a relay optical device located downstream the reflective display in the optical path of the display device and configured to project the light beam carried with the first image and the beam carried with the second image onto two different positions on the reflective screen.