Luminescence conversion of LED including two phosphors

US7804237B2 · kind B2 · utility

Assignee

• OSRAM Gesellschaft mit beschraenkter Haftung · DE

Inventors

• Bert Braune · Völklingen, DE
• Frank Jermann · Königsbrunn, DE
• Jörg Strauβ · Regensburg, DE

Key dates

• Filing date: Apr 11, 2006
• Grant date: Sep 28, 2010
• Expiry date: Dec 31, 2026

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01L2224/48091

Abstract

A luminescence conversion of LED, which uses a blue emitting chip and two illuminating substances, whereby one emits a red and the other a yellow to green. Both illuminating substances are separated upstream from the chip.