Organic red electro-luminescent device including a...

Details Organic red electro-luminescent device including a... Organic red electro-luminescent device including a...

2005-03-22

2005-03-22

Garrett, Dawn (Department: 1774)

Stock material or miscellaneous articles

Composite

Of inorganic material

C428S917000, C313S504000, C313S506000, C252S301160, C548S190000, C548S202000, C549S396000, C549S060000, C549S385000, C549S398000, C549S414000, C549S426000

Reexamination Certificate

active

06869696

ABSTRACT:
The invention concerns an electro-luminescent device in which the luminescent layer contains a compound of general formula I as doping agent or as luminescent compound, whereby the radicals R1to R12are identical or are different, and mean hydrogen, straight chain or branched C1-C6alkyl, aralkyl, aryl or substituted aryl; R1and R2and/or R3and R4and/or R4and R5and/or R5and R11and/or R8and R5and/or R4and R12can form an alicyclic, heterocyclic or aromatic ring; R5can furthermore be H, OH, OR9, N,N-di-(C1-C6) alkylamino, acetylamino or halogen; R6and R7together can form an alicyclic or heterocyclic ring; A1and A2are identical or different and are —CN, —NO2or —COOR8; X is —CH, —CR11or N; and Y is O, —NH, —NR12, S or Se. The doping agents together luminesce predominately red with very good quantum efficiency together with the luminescent compound as a function of concentration.

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