Light emitting device and display

  • US 7,915,631 B2
  • Filed: 08/27/2009
  • Issued: 03/29/2011
  • Est. Priority Date: 07/29/1996
  • Status: Expired due to Term
First Claim
Patent Images

1. A light emitting diode comprising:

  • an LED chip having an electrode;

    a transparent material covering said LED chip, anda phosphor contained in said transparent material and absorbing a part of light emitted by said LED chip and emitting light of wavelength different from that of the absorbed light;

    wherein the main emission peak of said LED chip is within the range from 400 nm to 530 nm,a concentration of said phosphor in the vicinity of said LED chip is larger than a concentration of said phosphor in the vicinity of the surface of said transparent material, andsaid phosphor diffuses the light from said LED chip and suppresses a formation of an emission pattern by a partial blocking of the light by said electrode.

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