Electroluminescent devices

US5891587A · kind A · utility

Assignee

• Xerox Corporation · US

Inventors

• Nan-Xing Hu · Oakville, CA
• Shuang Xie · Mississauga, CA
• Beng S. Ong · Mississauga, CA
• Zoran D. Popovic · Täby, SE
• Ah-Mee Hor · Mississauga, CA
• Ping Liu · Mississauga, CA

Key dates

• Filing date: Feb 27, 1997
• Grant date: Apr 6, 1999
• Expiry date: Feb 27, 2017

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31678

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.