Multilayered cathode structures having silver for OLED devices

US7304428B2 · kind B2 · utility

Assignee

• EASTMAN KODAK COMPANY · US

Inventors

• Amalkumar P. Ghosh · Hopewell Junction, US
• Steven A. Van Slyke · Pittsford, US
• Angelo Pignata · Rochester, US

Key dates

• Filing date: Dec 14, 2004
• Grant date: Dec 4, 2007
• Expiry date: Mar 1, 2026

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10K50/828

Abstract

A cathode structure for use in an OLED device having one or more OLED layers includes a thin light-transmissive layer having a top surface and a bottom surface and including silver (Ag) wherein the Ag acts as a conductor for the cathode structure, and a light-transmissive electron-injecting layer disposed in contact with the bottom surface of the thin light-transmissive layer and with an underlying OLED layer. The structure also includes an oxide layer disposed over the thin light-transmissive layer, and a separation layer disposed between the top surface of the thin light-transmissive layer and the oxide layer.