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White light emitting phosphor blends for LED devices

  • US 20040007961A1
  • Filed: 07/11/2003
  • Published: 01/15/2004
  • Est. Priority Date: 05/15/2000
  • Status: Active Grant
First Claim
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1. A white light illumination system comprising:

  • a light emitting diode;

    a first luminescent material having a peak emission wavelength of about 575 to about 620 nm; and

    a second luminescent material having a peak emission wavelength of about 495 to about 550 nm, which is different from the first luminescent material; and

    a third luminescent material having a peak emission wavelength of about 420 to about 480 nm, which is different from the first and second luminescent materials.

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