Patent ID: 6635990
Filing Date: 2003-10-21
Classification: H01J,H01L

Abstract:
A display device comprising a primary light-emissive region, a light-sensitive region, a secondary light-emissive region and a display driver, wherein:the primary light-emissive region comprises an organic light-emissive material and a pair of electrodes arranged to apply an electric field across the light-emissive material to cause it to emit light; the light-sensitive region comprises a photocathode responsive to light from the primary light-emissive region to release charged particles towards the secondary light-emissive region; the secondary light-emissive region comprises a phosphorescent material excitable by the charged particles from the light-sensitive region to emit light; the display driver is for applying a voltage between the electrodes of the primary light-emissive region to cause it to emit light; and the voltage is less than 10V.