A full-parallax three-dimensional display device has a projector array (1) and an orthogonal cylinder grating screen (2) sequentially arranged. The orthogonal cylinder grating screen (2) has a first cylinder grating (4) and a second cylinder grating (5) perpendicular to each other. The projector array (1) projects images to the orthogonal cylinder grating screen (2). The display device obtains a three-dimensional image with high image resolution and high visual angle resolution. The device can realize full-parallax three-dimensional display with transverse and longitudinal parallax.
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