发明名称 |
Electron emission device provided with a reservoir containing material reducing the electron work function |
摘要 |
In order to improve the stability of a cold cathode (5) of the reverse biased junction type, a vacuum space (2) is coupled with a reservoir (10), within which a source (21) of material reducing the work function, for example caesium, is present. By influencing the vapor pressure and the temperature in component parts (13, 16) of the reservoir (10) and in the source (21), loss of caesium due to adsorption or other phenomena occurring at the emitting surface (8) of the cathode (5) can be compensated for by an incident flow of caesium (25).
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申请公布号 |
US4736135(A) |
申请公布日期 |
1988.04.05 |
申请号 |
US19860875801 |
申请日期 |
1986.06.18 |
申请人 |
U.S. PHILIPS CORPORATION |
发明人 |
ZWIER, JAN;VASTERINK, JOHANNES H. A.;VAN ESDONK, JOHANNES |
分类号 |
H01J1/304;H01J1/308;H01J1/32;H01J1/34;H01J3/02;(IPC1-7):H01J1/13;H01J5/02 |
主分类号 |
H01J1/304 |
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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