Patent ID: 8040045

Claim:
An organic electroluminescent light source having at least one substrate and a plurality of layers arranged on the substrate, said plurality of layers comprising: at least two electrodes of which at least one electrode is transparent and one acts as an anode and one as a cathode; at least one organic electroluminescent layer that is arranged between the electrodes, the at least one organic electroluminescent layer having a plurality of regions that emit either blue light or green light, wherein the plurality of regions include a first region that emits the blue light and a second region that emits the green light; and at least one phosphor layer that is arranged in the beam path of the light leaving the organic electroluminescent light source and that partly covers the at least one organic electroluminescent layer, wherein the at least one phosphor layer at least partly covers the second region of the at least one organic electroluminescent layer that emits the green light without covering the first region for receiving the green light and not receiving the blue light.