Patent ID: 9391299
Filing Date: 2016-07-12
CPC Classification: G02B,H01L,Y10T

Claim Text:
1. A light-extraction element, comprising: a light-diffusion layer, the light-diffusion layer comprising: a resin; and a plurality of raspberry-like particles uniformly dispersed in the resin, wherein the raspberry-like particles feature a surface contour with a plurality of round bumps, and the plurality of raspberry-like particles are composed of a material having a single reflective index, wherein the plurality of raspberry-like particles per se are primary particles and has a homogeneous cross-section, wherein the homogeneous cross-section has no interface, wherein the raspberry-like particles are used as diffusion materials in the light-extraction element and the scattering caused by the surface contour of the raspberry-like particles enhances the light-extraction efficiency and reduces the color shift.