Patent ID: 9608178
Date: 2017-03-28
CPC Classifications: H01L

Claim:
1. A semiconductor light emitting device comprising: a substrate for element mounting; a wiring formed on the substrate; a reflector formed on the substrate having a cavity; a diffusive reflection resin layer formed in the cavity and having at least one opening; at least one light emitting diode (LED) element formed in the at least one opening, respectively, and electrically connected to the wiring; a wavelength conversion structure formed on the diffusive reflection resin layer and sealed the at least one opening, wherein the wavelength conversion structure containing a phosphor material and converting a wavelength of light emitted by the at least one LED element, an encapsulating resin layer formed in the cavity, wherein the encapsulating resin layer including a first portion and a second portion, wherein the first portion filled in the at least one opening and encapsulated the at least one LED element, wherein the second portion covers the wavelength conversion structure and the diffusive reflection resin layer; wherein the at least one LED element including a light emitting region on a first surface facing the wavelength conversion layer, wherein the diffusive reflection resin layer is formed from a cured material of a resin composition containing a transparent resin and an inorganic filler different in refractive index from the transparent resin, and a diffuse reflectance of the diffusive reflection resin layer is 80% or more at the wavelength of 430 nm, and wherein the wavelength conversion structure is a phosphor plate and comprising a translucent ceramic, the translucent ceramic including a polycrystalline sintered body, and the phosphor plate having a sintered density of 99.0% or more, a total light transmittance of 40% or more in a visible light wavelength region excluding an excitation wavelength region, and a thickness of 100 μm to 1,000 μm.