{
  "$type": "site.standard.document",
  "description": "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…",
  "path": "/patents/1251629",
  "publishedAt": "2020-01-02T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "G02B6/0035",
    "siOPTICA GmbH"
  ],
  "textContent": "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.",
  "title": "SCREEN FOR A FREE AND A RESTRICTED VIEWING MODE AND APPLICATION THEREOF"
}