Patent ID: 7514867
Filing Date: 2009-04-07
Classification: F21K,F21S,F21Y,H01L

Abstract:
1. A method for fabricating an LED lamp, the method comprising the steps of: (a) preparing a substrate with at least one LED chip mounted thereon; (b) forming a phosphor resin portion on the substrate such that at least the upper surface of the LED chip is covered with the phosphor resin portion; and (c) arranging a lens that acts on the outgoing light of the phosphor resin portion, wherein the method further comprises the steps of: (d) forming an optical diffusion layer, in which particles to scatter the outgoing light of the phosphor resin portion are dispersed, between the phosphor resin portion and the lens; and (e) increasing the thickness of the optical diffusion layer on the upper surface of the phosphor resin portion from around the center of the upper surface toward the periphery of the upper surface; wherein the phosphor resin portion has a cylindrical shape.