Patent ID: 9475987
Filing Date: 2016-10-25
CPC Classification: C09K,H01L

Claim Text:
1. A yellow light emitting phosphor comprising: a first phosphor including at least one of Lu a second phosphor mixed with the first phosphor to form a mixture, the second phosphor including α-type SiAlON(Li-α-SiAlON) containing Li as a metal component, wherein the second phosphor emits light having a central wavelength in a wavelength band of 550 nm to 590 nm by being excited by near ultraviolet (UV) or blue light, wherein the mixture of the first phosphor and the second phosphor is excited by the near UV or blue light to emit yellow light, wherein an excitation rate of the mixture is 50% or more as compared to a peak value at a wavelength of 410 nm of an excitation spectrum.