The invention relates to a
display device with a directional backlight. Stereoscopic images are produced by emitting light within two defined and restricted angular cones. Light is alternately sent to the viewer's left and right eyes in synchronization with switching the left and right eye images on the high-speed switching LCD. Alternatively, images can be generated for two or more observers and directed in multiple directions. The
display device comprises a display panel (1), a light redirecting element (8) for guiding light through the display panel (1), a
light guide (6) for guiding light towards the light redirecting element (8), A
first light source (4) coupled to the
light guide (6) to couple light into the
light guide (6) in a first direction, and a second
light source (5) coupled to the light guide (6) to couple light into the light guide (6) in a second direction Light is coupled into the light guide (6). The light redirecting element (8) has a first groove structure (9) and the light guide (6) has a second groove structure (7), the first and second groove structures (9, 7) being arranged in the following structure, The structure can guide the light from the
first light source (4) through the display panel (1) with the first
angular distribution (2), and guide the light from the second
light source (5) through the display panel (1) with the second
angular distribution (3). through the display panel (1).