A display device for detecting light includes a display surface, at least one light sensitive element arranged behind the display surface, and a liquid crystal element arranged between the display surface and the at least one light sensitive element. The liquid crystal element is operative to polarization...http://www.google.fr/patents/US8072442?utm_source=gb-gplus-shareBrevet US8072442 - Electrically switchable field of view for embedded light sensor
Electrically switchable field of view for embedded light sensor
