An image display includes an addressable image display pixel, having a substrate; a light emitter formed on the substrate; a photo-sensor formed on the substrate and optically coupled to the light emitter to detect light emitted by the light emitter to generate a feedback voltage signal in response to...http://www.google.fr/patents/US6720942?utm_source=gb-gplus-shareBrevet US6720942 - Flat-panel light emitting pixel with luminance feedback
Flat-panel light emitting pixel with luminance feedback
