Organic light-emitting diode (OLED) and method for the production thereof

US7256541B2 · kind B2 · utility

Assignee

• OSRAM Opto Semiconductors GmbH · DE

Inventors

• Jan Birnstock · Dresden, DE
• Jörg Blässing · Oberkochen, DE
• Karsten Heuser · Erlangen, DE
• Marcus Scheffel · Erlangen, DE
• Matthias Stossel · Mannheim, DE
• Georg Wittmann · Herzogenaurach, DE

Key dates

• Filing date: Nov 27, 2002
• Grant date: Aug 14, 2007
• Expiry date: Nov 27, 2022

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10K50/11

Abstract

An organic layer (1) is applied to a transparent carrier (2) in such a way that different partial regions with different refractive indices are formed in the layer. Owing to deflection at the phase boundaries within the layer, fewer photons remain trapped in the layer as a result of wave-guiding losses than in the case of homogeneous layers.