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Method for manufacturing a triple wavelengths white LED

  • US 20050218780A1
  • Filed: 05/27/2005
  • Published: 10/06/2005
  • Est. Priority Date: 09/09/2002
  • Status: Abandoned Application
First Claim
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1. A method for manufacturing a triple wavelengths white LED, comprising the steps of:

  • Providing a blue LED chip with a wavelength between 430 nm and 480 nm;

    Providing a red phosphor and green phosphor mixed in a proper proportion to form a red and green mixed phosphor;

    Providing the red and green mixed phosphor coated on the blue LED chip capable of absorbing blue rays emitted from the blue LED, and emitting red wavelength rays and green wavelength rays;

    Mixing the blue wavelength rays, red wavelength rays, and green wavelength rays to produce the triple wavelengths white rays;

    The red and green mixed phosphor includes a red phosphor that contains as least a component of Li2TiO3;

    Mn;

    or LiALO2Mn;

    or 6MgO.As2O5;

    Mn4+;

    or 3.5MgO.0.5MgF2.GeO2;

    Mn4+; and

    The red and green mixed phosphor includes a green phosphor that contains as least a component of Y3(GaxAL1-x)5O12;

    Ce (0custom characterxcustom character1;

    or La
    2O3.11Al2O3;

    Mn;

    or Ca8Mg(SiO4)4Cl2;

    Eu, Mn.

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