发明名称 |
Method for producing cadmium free green emitting CRT phosphor |
摘要 |
A cadmium-free cathodoluminescent phosphor composition consists essentially of zinc sulfide activated with from about 0.019% by weight to about 0.024% by weight of copper and from about 0.01% by weight of about 0.02% by weight of aluminum wherein the emission of the phosphor upon stimulation by cathode rays has CIE values of x of from 0.287 to 0.291 and y from 0.616 to 0.620. The process involves solid state heating of the various raw materials wherein a first relatively pure zinc sulfide and a second zinc sulfide containing chloride ions are mixed with the appropriate levels of and alkali metal chloride and sources of copper and aluminum activators and then heated in a nitrogen-carbon disulfide atmosphere for about 3 hours at 1775 DEG C. to about 1825 DEG C.
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申请公布号 |
US4925593(A) |
申请公布日期 |
1990.05.15 |
申请号 |
US19890303599 |
申请日期 |
1989.01.27 |
申请人 |
GTE PRODUCTS CORPORATION |
发明人 |
BORCHARDT, RICHARD R.;GINGERICH, RICHARD G. W.;MILLER, MICHAEL J. |
分类号 |
C09K11/64 |
主分类号 |
C09K11/64 |
代理机构 |
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