Display device with solid state fluorescent material

US7939996B2 · kind B2 · utility

Assignee

• KONINKLIJKE PHILIPS ELECTRONICS NV · NL

Inventors

• Klemens Brunner · Eindhoven, NL
• Aldegonda Lucia Weijers · Eindhoven, NL
• Hans Peter Stormberg · Stolberg, DE
• Guido Henri Maria Van Tartwijk · Shanghai, CN
• JEAN-PAUL JACOBS · Eindhoven, NL
• Hans-Helmut Bechtel · Roetgen, DE
• Egbert Lenderink · Eindhoven, NL
• Lingli Wang · Chengdu, CN
• Marco Van As · Eindhoven, NL
• Erik Boonekamp · Utrecht, NL
• Martinus Petrus Joseph Peeters · Eindhoven, NL
• Oscar Arturo Chao Pujol · Santa Clara, US
• Martijn Henri Richard Lankhorst · Eindhoven, NL
• Teunis Willem Tukker · Eindhoven, NL
• Cornelis Jojakim Jalink · Eindhoven, NL
• Peter Alexander Duine · Eindhoven, NL

Key dates

• Filing date: Nov 14, 2006
• Grant date: May 10, 2011
• Expiry date: May 2, 2027

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10H20/8512
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A display device (100) comprising a plurality of lighting units (101), each lighting unit comprising at least one light emitting diode (202) being provided with a fluorescent element (203) arranged to absorb at least part of the light emitted by said light emitting diode and emit light of a wavelength range different from that of the absorbed light is provided. The fluorescent element (203) comprises at least one phosphor being an europium(II)-activated halogeno-oxonitridosilicate of the general formula EaxSiyN2/3x+4/3y:EuzOaXb.