| 摘要 |
An electron gun for a cathode-ray tube having a neck glass formed at a rear side of a funnel, a stem pin applying an external voltage to an electron gun, a cathode electrode generating electron beams, a plurality of grid electrodes installed spaced apart from the electrode at predetermined intervals and each focusing electrode receiving a static voltage or a dynamic voltage, and an electron gun having an anode installed isolated from the focusing electrode, the electron gun being encapsulated in the neck glass, wherein a wire connecting the stem pin and the dynamic static voltage focusing electrode is formed to have a regular section change in a longitudinal direction, to thereby change a natural frequency. The dynamic voltage focusing electrode and the stem pin are connected and the wire for applying the dynamic voltage is formed to a twisted several-strand wires to thereby improve the damping coefficient. Accordingly, the neck glass is restrained from vibrating and the noise is canceled. In addition, since the natural frequency of the wire is varied by twisting the wire or changing the section regularly in the longitudinal direction, a vibration of a specific frequency may not be transmitted to resonate the neck glass, so that the neck glass is prevented from vibrating and the noise is reduced, thereby improving the sensitivity characteristic of the color cathode-ray tube.
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