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Light emitting diode emitting red, green and blue light

  • US 5,952,681 A
  • Filed: 11/24/1997
  • Issued: 09/14/1999
  • Est. Priority Date: 11/24/1997
  • Status: Expired due to Term
First Claim
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1. A multicolor LED comprising:

  • a) at least three light emitting diode chips on a transparent substrate, each light emitting diode chip having;

    a P type electrode;

    a N type electrode;

    a reflection layer to direct light produced by the light emitting diode chip in a predetermined light emitting direction; and

    ,b) at least two wavelength converting layers located in the predetermined light emitting direction of the light from at least two of the light emitting diode chips, whereby light having at least three different colors is emitted from the LED.

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