发明名称 |
Color cathode ray tube with improved main lens |
摘要 |
A color cathode ray tube includes a vacuum envelope including a panel portion, a neck portion accommodating an electron gun, and a funnel portion connecting the panel portion and the neck portion, and aperture electrodes having apertures for passing center and side electron beams, respectively, located in a main lens electrode including two opposing cylindrical electrodes having racetrack-shaped sections. At least one of the apertures is not circular. The apertures of at least one aperture electrode for the center electron beam and for the side electron beams are displaced with respect to each other to provide a step in the direction in which the electron beams pass.
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申请公布号 |
US5659225(A) |
申请公布日期 |
1997.08.19 |
申请号 |
US19940309153 |
申请日期 |
1994.09.20 |
申请人 |
HITACHI, LTD.;HITACHI DEVICE ENGINEERING CO., LTD. |
发明人 |
TSURUOKA, ATSUSHI;MISONO, MASAYOSHI |
分类号 |
H01J29/50;(IPC1-7):H01J29/50 |
主分类号 |
H01J29/50 |
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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