COMPOSITE CRYSTAL PHOSPHORS WITH A HIGH LIGHT-EMITTING PROPERTY, EXCELLENT THERMAL AND CHEMICAL STABILITY, A LIGHT EMITTING DEVICE, A SURFACE LIGHT SOURCE APPARATUS, A DISPLAY APPARATUS AND AN ILLUMINATION APPARATUS

摘要

PURPOSE: A composite crystal phosphor is provided to ensure excellent thermal and chemical stability and high color rendering property, to obtain red light having big half amplitude and to enable the use for the manufacture of high power/high reliable white light emitting device.;CONSTITUTION: A composite crystal phosphor is an inorganic composition containing at least M element and Al element, silicon, oxygen and nitrogen. The inorganic composition has particles having at least two kinds of a crystalline phase. The at least two kinds of a crystalline phase include a first crystalline phase of M_2SiO_(4-x)N_y crystals and a second crystalline phase of β-Sialon crystals, wherein M is at least one kind of elements selected from the group consisting of Mg, Ca, Sr and Ba, 0x3, and y=2x/3.;COPYRIGHT KIPO 2012