Light-emitting device with coated phosphor

US7202598B2 · kind B2 · utility

Assignee

• KONINKLIJKE PHILIPS ELECTRONICS NV · NL

Inventors

• Thomas Juestel · Aachen, DE
• Cornelis Reinder Ronda · Aachen, DE
• Walter Mayr · Alsdorf, DE
• Peter Josef Schmidt · Aachen, DE
• Volker Weiler · Aachen, DE

Key dates

• Filing date: Oct 16, 2001
• Grant date: Apr 10, 2007
• Expiry date: May 8, 2024

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10H20/8511
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The invention describes a light-emitting device (1) which comprises a light-emitting diode and a phosphor layer. To prolong the useful life of the light-emitting device (1), a phosphor (4) in the phosphor layer (2) has a water-resistant coating.