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    • 1. 发明授权
    • Red emitting phosphor for cathode ray tube
    • 用于阴极射线管的红色发光荧光粉
    • US06268691B1
    • 2001-07-31
    • US09379113
    • 1999-08-23
    • Hirofumi TakemuraSatoshi SuganoHiroyasu YashimaYohe ShimizuTsuyoshi OyaizuAkira Mikami
    • Hirofumi TakemuraSatoshi SuganoHiroyasu YashimaYohe ShimizuTsuyoshi OyaizuAkira Mikami
    • H01J2910
    • H01J29/322C09K11/7789H01J29/325
    • 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.
    • 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。
    • 8. 发明授权
    • Image display apparatus having first and second regions with respective luminances
    • 图像显示装置具有具有相应亮度的第一和第二区域
    • US07741767B2
    • 2010-06-22
    • US11935898
    • 2007-11-06
    • Masahiro YokotaTsuyoshi OyaizuHiroaki Ibuki
    • Masahiro YokotaTsuyoshi OyaizuHiroaki Ibuki
    • H01J1/62H01J1/304
    • H01J31/127H01J29/28H01J2329/28
    • An image display apparatus including a rear plate and a face plate facing the rear plate; wherein the rear plate includes an electron-emitting device; and the face plate includes a light-emitting body for emitting light through irradiation of electrons from the electron-emitting device, and a metal back arranged between the electron-emitting device and the light-emitting body. The light-emitting body includes a first region in which a luminance with respect to a maximum value of a luminance in the light-emitting body is greater than or equal to 50% and a second region in which the luminance is less than 50%; and an arithmetic mean deviation of the profile (Ra) of the metal back in the second region is larger than the arithmetic mean deviation of the profile (Ra) of the metal back in the first region.
    • 一种图像显示装置,包括:后板和面板; 其中所述后板包括电子发射器件; 并且面板包括用于通过从电子发射器件照射电子来发射光的发光体和布置在电子发射器件和发光体之间的金属背。 发光体包括其中相对于发光体中的亮度的最大值的亮度大于或等于50%的第一区域和亮度小于50%的第二区域; 并且第二区域中的金属背的轮廓(Ra)的算术平均偏差大于第一区域中的金属背的轮廓(Ra)的算术平均偏差。