发明名称 |
Cathode for electron tube |
摘要 |
A cathode for an electron tube has a layer of electron-emissive substance containing alkaline earth metal carbonates having capillary crystals, to which 0.01-20.0 wt % of both a lanthanum (La) compound and a magnesium (Mg) compound or an La-Mg compound, based upon the weight of the alkaline earth metal carbonate, is added. The cathode enjoys full interchangeability with a conventional oxide cathode and a 15-20% longer lifetime. |
申请公布号 |
GB2294155(B) |
申请公布日期 |
1999.03.03 |
申请号 |
GB19950002967 |
申请日期 |
1995.02.15 |
申请人 |
* SAMSUNG DISPLAY DEVICES CO LTD |
发明人 |
GYU-NAM * JU;JONG-SEO * CHOI;KEUN-BAE * KIM;KWANG-MIN * LEE;KWI-SEOK * CHOI |
分类号 |
H01J1/14;H01J1/142;H01J1/20;H01J1/28;(IPC1-7):H01J1/14 |
主分类号 |
H01J1/14 |
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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