Organic light-emitting device having homogenous brightness distribution

US8878225B2 · kind B2 · utility

Assignee

• OSRAM Opto Semiconductors GmbH · DE

Inventors

• Andrew Ingle · Tucson, US
• Benjamin Claus Krummacher · Regensburg, DE
• Erwin Lang · Regensburg, DE

Key dates

• Filing date: Mar 9, 2011
• Grant date: Nov 4, 2014
• Expiry date: Mar 9, 2031

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/2495

Abstract

An organic light-emitting device comprising an active layer for producing radiation having a first side surface and a second side surface adjoining a corner edge. A first contact strip extends along the first side surface for injecting charge carriers of a first type into the active layer. A second contact strip extends along the second side surface for injecting charge carriers of a second type into the active layer. The first side surface has a recessed region adjoining the corner edge, and the injection of charge carriers from the first contact strip is suppressed in the recessed region.