OLED with variable thickness organic functional layer

US10454069B2 · kind B2 · utility

Assignee

• Osram OLED GMBH · DE

Inventors

• Daniel Riedel · Hersbruck, DE
• Thomas Wehlus · Lappersdorf, DE
• Carola Diez · Regensburg, DE
• Nina Riegel · Tegernheim, DE
• Ulrich Niedermeier · Leiblfing, DE
• Arne Fleißner · Regensburg, DE
• Erwin Lang · Regensburg, DE

Key dates

• Filing date: Feb 18, 2015
• Grant date: Oct 22, 2019
• Expiry date: Mar 29, 2035

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10K2102/351

Abstract

An organic light-emitting device and a method for producing an organic light emitting device are disclosed. In an embodiment the device includes a substrate and at least one layer sequence arranged on the substrate and suitable for generating electromagnetic radiation. The at least one layer sequence includes at least one first electrode surface arranged on the substrate, at least one second electrode surface arranged on the first electrode surface and an organic functional layer stack having organic functional layers between the first electrode surface and the second electrode surface. The organic functional layer stack includes at least one organic light-emitting layer, wherein the at least one organic light-emitting layer is configured to emit light, wherein the organic functional layer stack includes at least one inhomogeneity layer, and wherein a thickness of the at least one inhomogeneity layer varies in a lateral direction.