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Semiconductor light emitting device including a fluorescent material

  • US 6,661,030 B2
  • Filed: 10/23/2001
  • Issued: 12/09/2003
  • Est. Priority Date: 09/01/1997
  • Status: Expired due to Term
First Claim
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1. A semiconductor light emitting device comprising:

  • a packaging member;

    a semiconductor light emitting element mounted on the packaging member, the semiconductor light emitting element including a first semiconductor layer of a first conduction type, a light emitting layer located on the first semiconductor layer for emitting primary light having a first wavelength, and a second semiconductor layer of a second conduction type, the light emitting layer containing a material selected from the group consisting of gallium nitride, zinc selenide, silicon carbide and boron nitride; and

    a layer of fluorescent material absorbing the primary light emitted from the light emitting layer and to emit secondary light having a second wavelength different from the first wavelength, the layer of fluorescent material including an adhesive material which binds the fluorescent material, wherein the layer of fluorescent material includes a material selected from the group consisting of inorganic polymer, rubber material, farinaceous material and protein, which binds the fluorescent material.

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