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1. 发明授权

US06268691B1 Red emitting phosphor for cathode ray tube 失效
标题翻译：用于阴极射线管的红色发光荧光粉
公开(公告)号：US06268691B1
公开(公告)日：2001-07-31
申请号：US09379113
申请日：1999-08-23
申请人： Hirofumi Takemura , Satoshi Sugano , Hiroyasu Yashima , Yohe Shimizu , Tsuyoshi Oyaizu , Akira Mikami
发明人： Hirofumi Takemura , Satoshi Sugano , Hiroyasu Yashima , Yohe Shimizu , Tsuyoshi Oyaizu , Akira Mikami
IPC分类号： H01J2910
CPC分类号： H01J29/322 , C09K11/7789 , H01J29/325
摘要： A red emitting phosphor comprises a yttrium oxysulfide phosphor as a base material. A red emitting phosphor of medium particle size type has such a particle size distribution that a content of a component of a particle diameter of less than 4.0 &mgr;m is 15% or less, that of a component of a particle diameter of 4.0 &mgr;m or more and less than 8.0 &mgr;m is 75% or more, and that of a component of a particle diameter of 8.0 &mgr;m or more is 10% or less. A red emitting phosphor of larger particle size type has such a particle size distribution that the content of a component of a particle diameter of less than 5.04 &mgr;m is 20% or less, that of a component of a particle diameter of 5.04 &mgr;m or more and less than 10.079 &mgr;m is 70% or more, and that of a component of a particle diameter of 10.079 &mgr;m or more is 10% or less. Phosphor layers employing these red emitting phosphors are excellent in denseness. Accordingly, a cathode ray tube of high contrast and high quality can be provided.
摘要翻译：红色发射磷光体包含硫氧化钇荧光体作为基材。中等粒径型的红色发射荧光体具有粒径小于4.0μm的成分的含量为15％以下，粒径为4.0μm以上的成分的粒径分布，小于8.0μm为75％以上，粒径为8.0μm以上的成分为10％以下。粒径较大的红色荧光体具有如下的粒径分布：粒径小于5.04μm的成分的含量为20％以下，粒径为5.04μm以上的成分的含量，小于10.079μmol为70％以上，粒径为10.079μm以上的成分为10％以下。使用这些红色发光荧光体的荧光体层的致密性优异。因此，可以提供高对比度和高质量的阴极射线管。

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