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

  • US 6,592,780 B2
  • Filed: 04/25/2001
  • Issued: 07/15/2003
  • Est. Priority Date: 09/20/1996
  • Status: Expired due to Term
First Claim
Patent Images

1. A wavelength-converting casting composition, for converting a wavelength of ultraviolet, blue or green light emitted by an electroluminescent component, comprising:

  • a transparent epoxy casting resin;

    an inorganic luminous substance pigment powder dispersed in said transparent resin, said pigment powder comprising luminous substance pigments from Ce-doped phosphors, said pigment powder converting said ultraviolet, blue or green light into a higher wavelength light; and

    said luminous substance pigments having grain sizes ≦

    20 μ

    m and a mean grain diameter d50

    5 μ

    m, wherein said luminous substance pigments have a silicone coating.

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