| abstract |
General formula (A): Eu a Si b Al c O d N e (a number satisfying 0.005 ≦ a ≦ 0.4, b + c = 12, d + e = 16 in General Formula (A)). The average particle size (d1) (air permeation method) is shown, and the median diameter (50% D) of the particle size distribution is 12.5 to 35 μm, 50% D / d1 = 1.4 to 2.2, and an absorption rate of 600 nm. The β-type SiAlON which controlled dispersibility and improved transparency by the divalent europium activated oxynitride green-based fluorescent substance which is β type SiAlON which is 8.0% or less, and the light-emitting device, BL light source device, and liquid crystal display device using the same, The present invention provides a light emitting device having stable characteristics at high efficiency and a liquid crystal display device using the same. |