An OLED display with a photosensor includes a substrate; a display area comprising an array of addressable OLEDs formed on the substrate; and an elongated photosensor formed on the substrate and located along an edge of the display area and responsive to ambient illumination to generate a feedback signal...http://www.google.fr/patents/US7026597?utm_source=gb-gplus-shareBrevet US7026597 - OLED display with integrated elongated photosensor
OLED display with integrated elongated photosensor