High reliability, high efficiency, integratable organic light emitting devices and methods of producing same

US6046543A · kind A · utility

Assignee

• THE TRUSTEES OF PRINCETON UNIVERSITY · US

Inventors

• Vladimir Bulovic · Lexington, US
• Stephen R. Forrest · Ann Arbor, US
• Paul E. Burrows · Chattaroy, US
• Dmitri Z. Garbuzov · San Francisco, US

Key dates

• Filing date: Dec 23, 1996
• Grant date: Apr 4, 2000
• Expiry date: Dec 23, 2016

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10K2102/321
• WIPO field: Micro-structural and nano-technology
• WIPO sector: Chemistry

Abstract

An organic light emitting device (OLED) having an inverted structure including a cathode layer which is deposited on a substrate and on top of which an electron transporting layer (ETL), an electroluminescent (EL) layer, a hole transporting layer (HTL), a protection layer and an anode are deposited in sequence. The inverted OLED (IOLED) provides improved longevity, flexibility and efficiency over conventional OLEDs.