发明名称 |
Picture tube device |
摘要 |
In a picture tube device with a field-emission cold cathode, including a plurality of electron-emitting cathodes, and a lead electrode provided with a plurality of apertures surrounding the plurality of electron-emitting cathodes respectively, a surface of the lead electrode has a curved shape that is convex in an electron emission direction. This makes it possible to obtain a high-resolution and high-performance picture tube device that has an excellent focus performance over an entire beam current.
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申请公布号 |
US2003132695(A1) |
申请公布日期 |
2003.07.17 |
申请号 |
US20030340160 |
申请日期 |
2003.01.09 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
YAMAUCHI MASAHIDE;ITOH TAKASHI;FUJII KOJI |
分类号 |
H01J1/02;H01J1/304;H01J29/04;H01J29/46;H01J29/48;H01J29/58;(IPC1-7):H01J1/02 |
主分类号 |
H01J1/02 |
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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