Radiation-emitting semiconductor chip with a radiation-emitting active layer

US6946687B2 · kind B2 · utility

Assignee

• OSRAM GmbH · DE

Inventors

• Dominik Eisert · Regensberg, DE
• Volker Harle · Hemau, DE
• Uwe Strauss · Bad Abbach, DE
• Ulrich Zehnder · Regensburg, DE

Key dates

• Filing date: Jan 10, 2003
• Grant date: Sep 20, 2005
• Expiry date: Jan 10, 2023

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10H20/821

Abstract

Recesses interrupt an active layer on a semiconductor chip to improve the coupling out of light. As a result, side faces of the active layer appear, as seen from a light-generating point, at a large solid angle and the paths of light in the active layer are shortened.