发明名称 |
Method and apparatus for coating electroluminescent phosphors |
摘要 |
A process for preparing particles of zinc sulfide-based electroluminescent phosphor having a moisture resistant coating thereon which comprises the steps of selecting a reaction vessel having a given height and a porous disc at the bottom thereof; charging the reaction vessel with phosphor particles and fluidizing the particles by introducing an inert gas into the vessel through the porous disc; heating the reaction vessel to a reaction temperature; introducing a coating precursor into the reaction vessel at a position adjacent the bottom of the vessel but above the disc; introducing a co-reactant into the reaction vessel at a position substantially mid-way of the given height; and maintaining the inert gas flow, the precursor flow and the co-reactant flow for a time sufficient for a reaction to occur and coat the phosphor with the moisture resistant coating. Apparatus for carrying out the process is also disclosed.
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申请公布号 |
US6733826(B2) |
申请公布日期 |
2004.05.11 |
申请号 |
US20010963964 |
申请日期 |
2001.09.26 |
申请人 |
OSRAM SYLVANIA INC. |
发明人 |
FAN CHEN-WEN;BENJAMIN DALE E. |
分类号 |
H05B33/14;C09K11/00;C09K11/02;C09K11/08;C09K11/56;(IPC1-7):B05D7/00 |
主分类号 |
H05B33/14 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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