Light emitting device

  • US 8,227,827 B2
  • Filed: 11/18/2010
  • Issued: 07/24/2012
  • Est. Priority Date: 03/28/2008
  • Status: Active Grant
First Claim
Patent Images

1. A light emitting device, comprising:

  • a leadframe;

    a light emitting unit disposed on the leadframe;

    a non-transparent side element surrounding the light emitting unit;

    a transparent encapsulant covering the light emitting unit and located inside the non-transparent side element, wherein an upper surface of the transparent encapsulant has a concave on which a reflective surface is disposed; and

    a fluorescent colloid layer disposed at the side wall of the transparent encapsulant and located between the non-transparent side element and the transparent encapsulant;

    wherein the light generated by the light emitting unit is reflected by the reflective surface and guided to the side wall of the transparent encapsulant to excite the fluorescent colloid layer and generate a mixed light, the mixed light is then guided to the top of the transparent encapsulant by the non-transparent side element.

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