05821690 is referenced by 144 patents and cites 4 patents.

An electroluminescent device includes first and second layers (6, 12) of light emitting semiconductive conjugated polymers with an electrode arrangement (4, 8, 10, 14) for injecting charge carriers into both light emissive layers to cause light to be emitted therefrom. The first and second light emitting layers are in viewing overlap, and the electrode arrangement includes two sets of electrodes (4, 8, 10, 12) which can be operated independently. The first light emissive layer is arranged to emit radiation of a first wavelength when excited and the second light emissive layer is arranged to emit radiation of a second wavelength when excited. The electroluminescent device can thus be operated to cause either radiation of the first wavelength or radiation of the second wavelength or both to be emitted and viewed.

Title
Electroluminescent devices having a light-emitting layer
Application Number
8/604966
Publication Number
5821690
Application Date
April 22, 1996
Publication Date
October 13, 1998
Inventor
Andrew Bruce Holmes
Cambridge
GB
Richard Henry Friend
Cambridge
GB
Karl Pichler
Cambridge
GB
Paul Leslie Burn
Oxford
GB
Josef Herbert Ferdinand Martens
Stuttgart
DE
Agent
Merchant Gould Smith Edell Welter & Schmidt
Assignee
Cambridge Display Technology
GB
IPC
H01J 63/04
H01J 1/62
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