Electroluminescent devices

Details Electroluminescent devices Electroluminescent devices

1997-02-27

1999-04-06

Yamnitzky, Marie

Stock material or miscellaneous articles

Composite

Of inorganic material

428704, 428457, 4284111, 428917, 313503, 313504, 313506, H05B 3312

Patent

active

058915877

ABSTRACT:
An organic electroluminescent (EL) device comprised of a starburst aromatic amine compound represented by the formula ##STR1## wherein N is nitrogen; A.sup.1 to A.sup.3 each individually represent biaryl; R.sub.a, R.sub.b, and R.sub.c represent independently one of the functional groups of the following formulae ##STR2## wherein N is nitrogen; each Ar.sup.1 and Ar.sup.2 are aryl; R.sub.1 to R.sub.8 are substituents independently selected from the group consisting of hydrogen, halogen, hydrocarbon, and alkoxy; and X represents oxygen, sulfur, or an alkylene.

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patent: 5487953 (1996-01-01), Shirota et al.
patent: 5554450 (1996-09-01), Shi et al.

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