发明名称 |
Cathode-ray tube apparatus |
摘要 |
A plurality of magnet rings for correcting a convergence are arranged in a tube axis direction with spacers interposed therebetween, on an outer circumferential surface of a neck. A velocity modulation coil for modulating a scanning velocity in a horizontal direction of an electron beam is placed so that a position of the velocity modulation coil in the tube axis direction is overlapped with those of the magnet rings. At least one of the spacers is made of only a magnetic substance. Alternatively, at least one of the spacers is made of a magnetic substance, and the outermost surface in a radius direction of the spacer made of a magnetic substance is covered with a non-metallic material. Because of this, the magnetic field formed by the velocity modulation coil can be intensified without disturbing the magnetic field of the magnet rings of a CPU.
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申请公布号 |
US2005200263(A1) |
申请公布日期 |
2005.09.15 |
申请号 |
US20050069776 |
申请日期 |
2005.03.01 |
申请人 |
MATSUSHITA TOSHIBA PICTURE DISPLAY CO., LTD. |
发明人 |
NISHIYAMA KOJI;MORIMOTO HIROJI;SATOU AKIRA;IWASAKI KATSUYO;TANIWA KENICHIRO |
分类号 |
H01F1/34;H01F3/08;H01F7/02;H01J29/70;H01J29/76;(IPC1-7):H01J29/70 |
主分类号 |
H01F1/34 |
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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