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公开(公告)号：US20040166318A1
公开(公告)日：2004-08-26
申请号：US10784093
申请日：2004-02-20
发明人： Wounjhang Park , Kazuhito Yasuda , Brent K. Wagner , Christopher J. Summers , Youngrag Do , Hong Guen Yang
IPC分类号： B32B023/02
CPC分类号： C09K11/584 , C09K11/025 , Y10T428/2991
摘要： The present invention provides surface coated phosphors useful in field emission displays and vacuum fluorescent displays. The surface coated phosphor comprises a thin coating of rare earth oxide, e.g., yttrium oxide, disposed on an uncoated phosphor such as a sulfide phosphor. The present invention further provides a process for preparing a surface coated phosphor comprising contacting the uncoated phosphor with a rare earth hydroxide gel solution to obtain a rare earth hydroxide gel coated phosphor, drying the gel coated phosphor to remove solvent residues, and heat treating the dried rare earth hydroxide gel coated phosphor. The surface coated phosphors of the present invention have improved cathodoluminescence efficiency, coulombic aging resistance, chemical, and/or oxidative stability.
摘要翻译： 本发明提供可用于场致发射显示器和真空荧光显示器的表面涂覆荧光粉。 表面涂覆的荧光体包括设置在未涂覆的荧光体如硫化物荧光体上的稀土氧化物例如氧化钇的薄涂层。 本发明还提供了一种制备表面被覆荧光体的方法，包括使未涂覆的荧光体与稀土氢氧化物凝胶溶液接触以获得稀土氢氧化物凝胶涂覆的荧光体，干燥凝胶涂覆的磷光体以除去溶剂残余物，并将干燥的 稀土氢氧化物凝胶涂层荧光粉。 本发明的表面被覆荧光体具有改进的阴极发光效率，库仑抗老化性，化学稳定性和/或氧化稳定性。
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公开(公告)号：US20030219599A1
公开(公告)日：2003-11-27
申请号：US10458624
申请日：2003-06-11
发明人： Wounjhang Park , Kazuhito Yasuda , Brent K. Wagner , Christopher J. Summers , Youngrag Do , Hong Guen Yang
IPC分类号： B05D003/02
CPC分类号： C09K11/584 , C09K11/025 , Y10T428/2991
摘要： The present invention provides surface coated phosphors useful in field emission displays and vacuum fluorescent displays. The surface coated phosphor comprises a thin coating of rare earth oxide, e.g., yttrium oxide, disposed on an uncoated phosphor such as a sulfide phosphor. The present invention further provides a process for preparing a surface coated phosphor comprising contacting the uncoated phosphor with a rare earth hydroxide gel solution to obtain a rare earth hydroxide gel coated phosphor, drying the gel coated phosphor to remove solvent residues, and heat treating the dried rare earth hydroxide gel coated phosphor. The surface coated phosphors of the present invention have improved cathodoluminescence efficiency, coulombic aging resistance, chemical, and/or oxidative stability.
摘要翻译： 本发明提供可用于场致发射显示器和真空荧光显示器的表面涂覆荧光粉。 表面涂覆的荧光体包括设置在未涂覆的荧光体如硫化物荧光体上的稀土氧化物例如氧化钇的薄涂层。 本发明还提供了一种制备表面被覆荧光体的方法，包括使未涂覆的荧光体与稀土氢氧化物凝胶溶液接触以获得稀土氢氧化物凝胶涂覆的荧光体，干燥凝胶涂覆的磷光体以除去溶剂残余物，并将干燥的 稀土氢氧化物凝胶涂层荧光粉。 本发明的表面被覆荧光体具有改进的阴极发光效率，库仑抗老化性，化学稳定性和/或氧化稳定性。
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公开(公告)号：US20020119247A1
公开(公告)日：2002-08-29
申请号：US10134502
申请日：2002-04-30
发明人： Wounjhang Park , Kazuhito Yasuda , Brent K. Wagner , Christopher J. Summers , Youngrag Do , Hong Guen Yang
IPC分类号： B05D007/00 , B05D003/02
CPC分类号： C09K11/584 , C09K11/025 , Y10T428/2991
摘要： The present invention provides surface coated phosphors useful in field emission displays and vacuum fluorescent displays. The surface coated phosphor comprises a thin coating of rare earth oxide, e.g., yttrium oxide, disposed on an uncoated phosphor such as a sulfide phosphor. The present invention further provides a process for preparing a surface coated phosphor comprising contacting the uncoated phosphor with a rare earth hydroxide gel solution to obtain a rare earth hydroxide gel coated phosphor, drying the gel coated phosphor to remove solvent residues, and heat treating the dried rare earth hydroxide gel coated phosphor. The surface coated phosphors of the present invention have improved cathodoluminescence efficiency, coulombic aging resistance, chemical, and/or oxidative stability.
摘要翻译： 本发明提供可用于场致发射显示器和真空荧光显示器的表面涂覆荧光粉。 表面涂覆的荧光体包括设置在未涂覆的荧光体如硫化物荧光体上的稀土氧化物例如氧化钇的薄涂层。 本发明还提供了一种制备表面被覆荧光体的方法，包括使未涂覆的荧光体与稀土氢氧化物凝胶溶液接触以获得稀土氢氧化物凝胶涂覆的荧光体，干燥凝胶涂覆的磷光体以除去溶剂残余物，并将干燥的 稀土氢氧化物凝胶涂层荧光粉。 本发明的表面被覆荧光体具有改进的阴极发光效率，库仑抗老化性，化学稳定性和/或氧化稳定性。
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