EL assembly based on tertiary amines, Alq3 derivatives or mixtures soluble in alcohol and polymeric binders

US6277504A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Friedrich Koch
• Helmut-Werner Heuer · Krefeld, DE
• Rolf Wehrmann · Krefeld, DE
• Martin Deussen · Marburg, DE
• Andreas Elschner · Mülheim, DE

Key dates

• Filing date: Mar 20, 1999
• Grant date: Aug 21, 2001
• Expiry date: Mar 20, 2019

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S428/917
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

Electroluminescent assemblies containing a substrate, an anode, an electroluminescent element and a cathode, where at least one of the two electrodes is transparent in the visible spectral region and the electroluminescent element can contain in order: a hole injection zone, hole transport zone, electroluminescent zone, electron transport zone and/or an electron injection zone, characterized in that the hole injection and hole transport zone is a substituted or unsubstituted 1,3,5-tris(aminophenyl)benzene compound A or a mixture thereof and the electroluminescent element may, if desired, contain a further functionalized compound selected from the group consisting of hole transport materials, a luminescent material B and, if desired, electron transport materials, where the hole injection and hole transport zone can contain, in addition to the component A, one or more further hole transport compounds, where at least one zone is present, individual zones can be left out and the zone(s) present can assume a plurality of functions.