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发明公开
CN102656248A 荧光体、发光装置及使用它的液晶显示装置 有权 转让

荧光体、发光装置及使用它的液晶显示装置
摘要：
本发明提供一种荧光体，是2价的铕活化氮氧化物绿色系发光荧光体，其为如下的β型SiAlON，即，实质上以通式(A)：EuaSibAlcOdNe(通式(A)中，a、b、c、d、e是满足0.005≤a≤0.4、b+c＝12、d+e＝16的数。)表示，平均粒度(d1)(空气透过法)为9～16μm，粒度分布中的中值粒径(50％D)为12.5～35μm，50％D/d1＝1.4～2.2，并且600nm的吸收率为8.0％以下，并提供使用它的发光装置、BL光源装置、以及液晶显示装置，通过使用控制了分散性、提高了透明性的β型SiAlON，提供高效率且特性稳定的发光装置及使用它的液晶显示装置。
摘要（英）：

A divalent-europium-activated oxynitride green light-emitting phosphor consisting of a [beta]-SiAlON which is substantially represented by general formula (A): EuaSibAlcOdNe [wherein a, b, c, d and e are numbers satisfying the relationships: 0.005<=a<=0.4, b+c=12, and d+e=16] and has a mean particle size (d1) of 9 to 16[mu]m (as determined by an air permeability method) and a medium diameter (50%D) of 12.5 to 35 [mu]m in the particle size distribution, with d1 and 50%D satisfying the relationship: 50%D/d1=1.4 to 2.2, and which exhibits an absorbance of 8.0% or less at 600nm; and a light-emitting device, a light source device for BL, and a liquid crystal display device, which are made using the same. The [beta]-SiAlON has controlled dispersibility and therefore exhibits enhanced transparency. Therefore, use of the [beta]-SiAlON makes it possible to provide both a light-emitting device that exhibits high efficiency and stable characteristics and a liquid-crystal display device using the same.

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