Importance

Loading Importance Indicators...

Abstract

The invention relates to a light emitting device (1) comprising a substrate (5), a transparent anode layer (7), a cathode layer (9), a light emitting layer (8) between the anode and cathode layers, and an intermediate layer (4) between the substrate and the anode layer. An electrically conducting element is embedded in the intermediate layer such that it is in contact with the anode layer. Also, scattering particles for scattering the light are embedded in the intermediate layer, increasing the light outcoupling efficiency of the device. Since the electrically conducting element is embedded in the intermediate layer and not, for instance, on top of the anode layer, i.e. not in between the anode and cathode layers, the sheet resistance of the anode layer can be reduced, without requiring a passivation layer which may adversely affect the light emitting material. Furthermore, the embedded electrically conducting element allows the thickness of the transparent anode layer to be reduced to a thickness of about 50 nm or less, thereby minimizing the influence of light absorption by the transparent anode layer on the light outcoupling efficiency. This allows for an improved light emission quality.

Loading the Abstract Image...

First Claim