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COLOR-STABLE PHOSPHOR CONVERTED LED

  • US 20090128028A1
  • Filed: 04/26/2007
  • Published: 05/21/2009
  • Est. Priority Date: 05/02/2006
  • Status: Active Grant
First Claim
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1. A light-emitting device, comprising at least one light-emitting diode (100;

  • 200;

    300) for emitting light of a first color and a luminescent material (102;

    202;

    302) arranged on said at least one light-emitting diode to receive at least part of the light emitted by said light-emitting diode, characterized in that said light-emitting device further comprises a filter (103;

    203;

    303) arranged to receive light emitted by said light-emitting diode (101;

    201;

    301) and transmitted through said luminescent material (102;

    202;

    302) and to absorb light of said first color; and

    said filter (103;

    203;

    303) comprises a pigment compound distributed in a matrix of silicon and oxygen atoms, in which matrix at least a portion of said silicon atoms are directly bonded to hydrocarbon groups.

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