Anode modification for organic light emitting diodes

US6501217B2 · kind B2 · utility

Assignee

• International Business Machines Corporation · US

Inventors

• Tilman Beierlein · Adliswil, CH
• Eliav Haskal · Eindhoven, NL
• Heike E. Riel · Thalwil, CH
• Walter Riess · Thalwil, CH
• Paul F. Seidler · Thalwil, CH
• Samuel Clagett Strite · Adliswil, CH
• Horst Vestweber · Prüm, DE

Key dates

• Filing date: Jan 10, 2000
• Grant date: Dec 31, 2002
• Expiry date: Jan 10, 2020

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10K2102/3026

Abstract

An organic light emitting device is provided which includes a cathode (51), an anode (47, 46, 48), and an organic electroluminescent region (49, 50). The anode includes a metal layer (46), a barrier layer (47), and an anode modification layer (48). Light is emitted through the cathode (51) when a voltage is applied between the anode (47, 46, 48) and the cathode (51).