SCREEN FOR A FREE AND A RESTRICTED VIEWING MODE AND APPLICATION THEREOF

A display screen operable on at least a partial area A in two operating modes, free-viewing mode B, and restricted-viewing mode B, with the residual display area of the screen outside the area A maintaining a free viewing mode; comprising a first backlight arranged below the residual display area; a second backlight arranged below the area A; a transmissive image generator in front of the backlights; a plate-shaped transparent light guide arranged between the image generator and the backlights that outcouples, through one of its large surfaces, light coupled in through one of its edges; light sources arranged laterally an edge of the light guide, wherein the light guide is transparent to at least 70% of the light emitted by the backlights, and wherein in the B mode, the light sources are switched on, and in the B mode, the backlights are on and the light sources are off.