发明名称 |
CATHODE STRUCTURE AND PRODUCTION METHOD THEREFOR AND ELECTRON GUN AND CATHODE RAY TUBE |
摘要 |
To obtain a cathode electrode (a cathode structure) where the electron beam spot diameter or size is reduced, the cathode driving voltage is lowered and the cathode current is stabilized for a long period, a recess or a region which does not radiate electron beams is formed near the central portion or near the outer circumference portion of an electrode radiation substance 9 of a cathode electrode 1, and hollow electron beams are obtained related to a cathode electrode, its manufacturing method, an electron gun and a cathode-ray tube. <IMAGE>
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申请公布号 |
EP1347486(A1) |
申请公布日期 |
2003.09.24 |
申请号 |
EP20010995019 |
申请日期 |
2001.12.26 |
申请人 |
SONY CORPORATION |
发明人 |
MAEDA, MAKOTO;ASANO, TOMOHISA;KOJIMA, AKIHIRO;YAMADA, YOSHINORI;NAKADAIRA, TADAKATSU |
分类号 |
H01J1/20;H01J1/13;H01J1/16;H01J1/26;H01J1/28;H01J9/04;H01J29/04;(IPC1-7):H01J1/16 |
主分类号 |
H01J1/20 |
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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