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    • 34. 发明申请
    • PHOSPHOR, PROCESS FOR PRODUCING PHOSPHOR AND LUMINESCENT DEVICE
    • 磷光体,生产磷光体和发光器件的方法
    • US20070210692A1
    • 2007-09-13
    • US11572498
    • 2005-07-07
    • Nobuyuki YokosawaYuuki OnoTakeo Ito
    • Nobuyuki YokosawaYuuki OnoTakeo Ito
    • H01J1/63C01B33/20
    • C09K11/595H01J2211/42
    • A phosphor, comprising a manganese activated zinc silicate phosphor, is comprised of particles having a major-to-minor axis ratio of 1.0 to 1.4. A method for producing the phosphor, comprising burning a phosphor material containing elements constituting a host material of the phosphor and an activator or compounds containing the elements by heating in a heating furnace while flowing or rotating them to manganese activated zinc silicate phosphor particles having a major-to-minor axis ratio of 1.0 to 1.4. Another method for producing the phosphor, comprising burning phosphor material by heating in a heating furnace while flowing or rotating them to obtain a manganese activated zinc silicate phosphor having an afterglow time of less than 9 ms. Thus, a compact phosphor layer with high packing density can be formed, and there can be obtained a phosphor capable of high-luminance green light emission upon excitation by vacuum ultraviolet rays or low-voltage electron beams. Moreover, there can be obtained a manganese-activated zinc silicate phosphor capable of emission of green light of high luminance and short afterglow time upon excitation by vacuum ultraviolet rays or low-voltage electron beams.
    • 包含锰活化的硅酸锌荧光体的磷光体由长度与短轴比为1.0至1.4的颗粒组成。 一种荧光体的制造方法,其特征在于,在将含有构成所述荧光体的主体的元素的荧光体材料和活化剂或含有所述元素的化合物在加热炉中进行加热同时流动或旋转至具有主要的锰活化的硅酸锌荧光体粒子的方法 - 短轴比为1.0〜1.4。 制造荧光体的另一种方法包括在流动或旋转加热炉的同时通过加热燃烧荧光材料,得到余辉时间小于9ms的锰活化硅酸锌荧光体。 因此,可以形成具有高填充密度的致密磷光体层,并且可以获得在通过真空紫外线或低电压电子束激发时能够产生高亮度绿色发光的荧光体。 此外,可以获得能够发射由真空紫外线或低电压电子束激发的高亮度和短余辉时间的绿光的锰活化的硅酸锌荧光体。