Wavelength-converting casting composition and white light-emitting semiconductor component

US6592780B2 · kind B2 · utility

Assignee

• OSRAM Opto Semiconductors 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: Apr 25, 2001
• Grant date: Jul 15, 2003
• Expiry date: Apr 25, 2021

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 powder of Ce-doped phosphors and the luminous substance pigments have particle sizes ≦20 &mgr;m and a mean grain diameter d50≦5 &mgr;m.