Patent ID: 7868343
Filing Date: 2011-01-11
Classification: H01L,H05B

Abstract:
1. A light-emitting device, comprising: an active region that is configured to emit light responsive to a voltage applied thereto; a first encapsulation layer that at least partially encapsulates the active region, the first encapsulation layer comprising a first matrix material and first nanoparticles and serving a first encapsulation layer function; and a second encapsulation layer that at least partially encapsulates the first encapsulation layer, the second encapsulation layer comprising a second matrix material and second nanoparticles and serving a second encapsulation layer function that is different from the first encapsulation layer function; wherein the first nanoparticles modify a first property that is a physical property of the first encapsulation layer including at least one of light scattering, diffraction, thermal conductivity, mechanical strength, abrasion resistance, and optical stability, wherein the second nanoparticles modify a second property that is a physical property of the second encapsulation layer including at least one of light scattering, diffraction, thermal conductivity, mechanical strength, abrasion resistance, and optical stability that is different from the first property.