Loading patent…
AssigneeKoninklijke Philips Electronics N.V.
InventorsSimone Vulto, Eric Meulenkamp, Peter Van De Weijer, Margaretha De Kok-Van Breemen, Michael Buechel
Estimating the term…
The invention relates to an electroluminescent composition comprising an electroluminescent material containing an aryl vinylene and an additive for suppressing a drop in the initial efficiency of light emission observed when the electroluminescent material is used as such in an electroluminescent device. The invention further relates to an electroluminescent composition comprising an electroluminescent material containing an aryl vinylene and an additive, wherein the additive comprises an oligo ring structure with at least four carbonyl groups and to an electroluminescent device comprising the composition according to the invention.
Electroluminescent composition comprising an electroluminescent material containing an aryl vinylene and an additive for suppressing a drop in initial light emission efficiency observed when an electroluminescent device comprising the electroluminescent material as such is driven to emit light.
Electroluminescent composition comprising an electroluminescent material containing an aryl vinylene and an additive, wherein the additive comprises an oligo ring structure with at least four carbonyl groups.
Dependencies are inferred from the claim text.