Patent ID: 8723201
Filing Date: 2014-05-13
Classification: H01L

Abstract:
1. An unpacked chip for a light-emitting device comprising: a transparent substrate having a first surface, an opposing second surface and a sidewall connecting the first surface and the second surface; a light emitting structure formed over the first surface of the substrate, wherein the light emitting structure comprises a p-type layer, an n-type layer, and an active layer with the active layer being sandwiched between the p-type layer and the n-type layer and with the n-type layer facing the substrate; and a transparent layer formed directly on the opposing second surface and the sidewall of the substrate, but does not form on any part of the light emitting structure, wherein the refractive index of the transparent layer is greater than the refractive index of the substrate and the transparent layer is made of a material selected from the group consisting of ITO, SiNx, GaN, AlGaN, AlN, ZnO, diamond, TiO2, SiC.