The invention discloses a three-dimensional
projection display device, which comprises a three-dimensional
projector, a holographic projection film screen and eyeglasses, wherein the three-dimensional
projector is used for projecting a three-dimensionally displayed
image frame sequence, and is positioned in a way that light projected by the three-dimensional
projector can be projected onto the holographic projection film screen; and the eyeglasses are matched with the three-dimensional projector, and are worn by a user to watch a picture projected by the holographic projection film screen. According to the three-dimensional
projection display device, the holographic projection film screen is used as a screen, so that the light loss of an active three-dimensional
projection system can be effectively reduced, and the
utilization rate of the light can be increased; in addition, due to the adoption of a holographic projection film, eyes can be less injured by light reflected or transmitted by the holographic projection film; even though the screen is manufactured into a
large size, a better film watching effect can be achieved; and the holographic projection film is transparent, so that the three-dimensionality of an object scene can be enhanced.