Electroluminescent arrangement using doped blend systems

US6376107B1 · kind B1 · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

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

Key dates

• Filing date: Jan 25, 1999
• Grant date: Apr 23, 2002
• Expiry date: Jan 25, 2019

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S428/917
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Electroluminescent arrangements, composed of a substrate, an anode, an electroluminescent element and a cathode, at least one of the two electrodes being transparent in the spectral range and it being possible for the electroluminescent element to contain the following zones: (1) a hole-injecting zone, (2) hole-transporting zone, (3) electroluminescent zone, (4) electron-transporting zone and/or (5) an electron-injecting zone, and at least one quinacridone which has sufficient solubility for a casting process is present in at least one of said zone and with the proviso that if more than one zone is present then the zones would be in the following order of (1) to (5) providing the zone is present.