Display device with primary and secondary light-emissive regions
AssigneeCambridge Display Technologies
InventorKarl Pichler
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Abstract
A display device comprising a primary light-emissive region, a light-sensitive region and a secondary light-emissive region, 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; sand the secondary light-emissive region comprises a phosphorescent material excitable by the charged particles from the light-sensitive region to emit light.
Claims19
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.
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 polymer 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.
Dependencies are inferred from the claim text.