| 摘要 |
PROBLEM TO BE SOLVED: To provide a cathode-ray tube maximizing the action of a VM coil acting in synchronization with the differential signal of a video signal. SOLUTION: In this cathode-ray tube including a cathode 3 to emit an electron beam toward a phosphor screen, an electron gun in which an anode electrode 9 on the screen side and a focus electrode on the cathode side, and the VM 18 coil acting in synchronization with the video signal of a circuit mounted on the neck part of the cathode-ray tube, the focus electrode 8 on which a fixed focus voltage is impressed comprises a set of three or more electrodes continuously disposed, and when the total of the length of the focus electrodes is set as L, and the intervals between the focus electrodes are set as 'g1' and 'g2', 4 mm < L < 30 mm, 0.6 mm < g1 < 1.2 mm, and 0.6 mm < g2 < 1.2 mm. COPYRIGHT: (C)2005,JPO&NCIPI
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