Diode and process for making an organic light-emitting diode with a substrate planarisation layer

US8822985B2 · kind B2 · utility

Assignee

• Astron Fiamm Safety Sarl · IT

Inventors

• Bruno Dussert-Vidalet · La Garde, FR
• Mohamed Ben Khalifa · Lecce, IT
• Hélène Cloarec · Hyères, FR
• Florent Monestier · Aachen, DE

Key dates

• Filing date: Jun 15, 2010
• Grant date: Sep 2, 2014
• Expiry date: Aug 21, 2031

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10K50/816

Abstract

An organic light-emitting diode (OLED) on a transparent substrate includes a microcavity formed between a reflecting cathode and semi-reflecting anode. The microcavity includes multiple organic layers with at least one light-emitting layer. The OLED is characterized by a transparent planarization layer between the substrate and an upper metallic layer forming the OLED semitransparent anode. A process for making such an OLED is also described.