| 发明名称 |
A NEEDLE ELECTRODE AND A MANUFACTURING METHOD OF A NEEDLE ELECTRODE FOR A ELECTRON EMITTER |
| 摘要 |
A method of making a needle electrode is such that a neck portion is formed in a thin wire made of a tungsten single crystal and the thin wire is cut at the neck portion by feeding an electric current in electrolyte. |
| 申请公布号 |
KR100264365(B1) |
申请公布日期 |
2000.08.16 |
| 申请号 |
KR19970023489 |
申请日期 |
1997.06.07 |
| 申请人 |
DENKI KAGAKU KOGYO KABUSHIKI KAISHA |
发明人 |
DERUI, YOSHINORI;TSNODA, KATSYOSHI |
| 分类号 |
H01J9/02;(IPC1-7):H01J9/02 |
主分类号 |
H01J9/02 |
| 代理机构 |
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代理人 |
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