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

  • US 7,276,736 B2
  • Filed: 07/10/2003
  • Issued: 10/02/2007
  • Est. Priority Date: 09/20/1996
  • Status: Expired due to Fees
First Claim
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1. Light emitting semiconductor body for use in an LED housing,said semiconductor body being provided with a layer comprising a wavelength-converting casting composition;

  • andsaid casting composition comprising luminous substance particles;

    said luminous substance particles comprising luminous substance pigments selected from the group consisting of garnets doped with rare earths;

    thiogallates doped with rare earths;

    aluminates doped with rare earths; and

    orthohsilicates doped with rare earths; and

    said luminous substance pigments having grain sizes ≦

    20 μ

    m and a median diameter ≦

    5 μ

    m, wherein 50% of the pigments have a grain diameter greater than said median diameter and 50% of the pigments have a grain diameter less than said median diameter.

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