Patent ID: 9070843
Filing Date: 2015-06-30
Classification: C09K,H01L

Abstract:
1. A semiconductor light-emitting device comprising: a semiconductor light-emitting element; and a phosphor which uses the semiconductor light-emitting element as an excitation source to emit light, wherein the phosphor contains at least a broadband green phosphor and a broadband red phosphor; the broadband red phosphor comprises at least one type selected from the group consisting of CaAlSi(N,O) the broadband red phosphor has an emission peak wavelength within a wavelength range that is 650 nm or more and 680 nm or less; the semiconductor light-emitting device emits light with a chromaticity coordinate in an XY chromaticity diagram of a CIE (1931) XYZ color system whose value of a deviation duv from a black-body radiation trajectory curve is −0.03 or more and −0.005 or less, and a value of intensity of light with a wavelength of 660 nm in a spectrum of light normalized with respect to luminous flux emitted from the semiconductor light-emitting device is 170% or more and 300% or less of a value of intensity of light with a wavelength of 660 nm in a spectrum of reference light normalized with respect to luminous flux for color rendering evaluation.