Electron injecting materials for organic electroluminescent devi

Details Electron injecting materials for organic electroluminescent devi Electron injecting materials for organic electroluminescent devi

1996-12-23

1998-10-06

Nold, Charles

Stock material or miscellaneous articles

Composite

Of inorganic material

425691, 425917, 313503, 313504, 313505, 313506, 313507, 313508, 313509, H05B 3320

Patent

active

058174311

ABSTRACT:
An organic electroluminescent display device (10) includes a plurality of organic layers (16, 18, 20, 22 and 24) disposed between opposing electrodes (14 and 26). The electron injecting layer (24) is characterized by the formula: ##STR1## wherein M is a metal ion, and may be selected from the group consisting of Zn.sup.2+, Mg.sup.2+, Be.sup.2+, Al.sup.3+, and Ga.sup.3+ ; X=2 or 3; and R.sub.1 to R.sub.8 represent functional groups selected from the group consisting of hydrogen, hydrocarbon groups or functional groups such as cyano, halides, haloalkyl, haloalkoxy, alkoxyl, amido, amino, sulfonyl, carbonyl, carbonyloxy, oxycarbonyl, and combinations thereof.

REFERENCES:
patent: 4539507 (1985-09-01), VanSlyke et al.
patent: 5256945 (1993-10-01), Imai et al
patent: 5443921 (1995-08-01), Hasokawa et al.
patent: 5518824 (1996-05-01), Funhoff et al.
patent: 5620806 (1997-04-01), Nakamura et al.
patent: 5645948 (1997-07-01), Shi et al.

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