Light-radiating semiconductor component with a luminescene conversion element

US7345317B2 · kind B2 · utility

Assignee

• OSRAM GmbH · DE

Inventors

• Ulrike Reeh · Munich, DE
• Klaus Höhn · Taufkirchen, DE
• Norbert Stath · Regensburg, DE
• Gunter Waitl · Regensburg, DE
• Peter Schlotter · Glückstadt, DE
• Jürgen Schneider · Kirchzarten, DE
• Ralf Schmidt · Nuremberg, DE

Key dates

• Filing date: Jun 13, 2005
• Grant date: Mar 18, 2008
• Expiry date: Jun 13, 2025

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02B20/00
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The light-radiating semiconductor component has a radiation-emitting semiconductor body and a luminescence conversion element. The semiconductor body emits radiation in the ultraviolet, blue and/or green spectral region and the luminescence conversion element converts a portion of the radiation into radiation of a longer wavelength. This makes it possible to produce light-emitting diodes which radiate polychromatic light, in particular white light, with only a single light-emitting semiconductor body. A particularly preferred luminescence conversion dye is YAG:Ce.