Method of producing a wavelength-converting casting composition

US7235189B2 · kind B2 · utility

Assignee

• OSRAM GmbH · DE

Inventors

• Klaus Höhn · Taufkirchen, DE
• Alexandra Debray · Regensburg, DE
• Peter Schlotter · Glückstadt, DE
• Ralf Schmidt · Nuremberg, DE
• Jürgen Schneider · Kirchzarten, DE

Key dates

• Filing date: Dec 6, 2000
• Grant date: Jun 26, 2007
• Expiry date: Dec 11, 2020

Classification

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

Abstract

The wavelength-converting casting composition is based on a transparent epoxy casting resin with a luminous substance admixed. The composition is used in an electroluminescent component having a body that emits ultraviolet, blue or green light. An inorganic luminous substance pigment powder with luminous substance pigments is dispersed in the transparent epoxy casting resin. The luminous substance is a phosphorous group of the general formula A3B5X12:M, and the luminous substance pigments have particle sizes ≦20 μm and a mean grain diameter d50≦5 μm.