Stable electroluminescent devices

US6916553B2 · kind B2 · utility

Assignee

• Agfa-Gevaert NV · BE

Inventors

• Peter Willaert · Mortsel, BE
• Tom Cloots · Londerzeel, BE
• Roger Van den Bogaert · Schoten, BE

Key dates

• Filing date: Mar 21, 2002
• Grant date: Jul 12, 2005
• Expiry date: Jul 9, 2022

Classification

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

Abstract

An electroluminescent device comprising a transparent or translucent support, a transparent or translucent first electrode, a second conductive electrode and an electroluminescent phosphor layer sandwiched between the transparent or translucent first electrode and the second conductive electrode, wherein the first and second electrodes each comprises a polymer or copolymer of a 3,4-dialkoxythiophene, which may be the same or different, in which the two alkoxy groups may be the same or different or together represent an optionally substituted oxy-alkylene-oxy bridge; a display comprising the above-mentioned electroluminescent device; a lamp comprising the above-mentioned electroluminescent device; manufacturing processes for the above-mentioned electroluminescent devices; and the use of such devices for the integrated backlighting of static and dynamic posters and signage.