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    • 5. 发明授权
    • Deflection yoke
    • 偏转轭
    • US07098584B2
    • 2006-08-29
    • US10678399
    • 2003-10-03
    • Hidenori SatoYasuhiro TorigoeYuji ShimaMasahiro Kamada
    • Hidenori SatoYasuhiro TorigoeYuji ShimaMasahiro Kamada
    • H01J29/70
    • H01J29/76
    • A deflection yoke is used for a cathode ray tube (CRT) including a glass tube having a screen surface and a straight portion for accommodating an electron gun. The deflection yoke includes a main deflection yoke including first and second horizontal deflecting coils and first and second vertical deflecting coils, and a sub-deflection yoke provided at a side of the main deflection yoke towards the electron gun of the CRT. The first and second horizontal deflecting coils have substantially saddle shapes and includes first and second coil-connection-wire sections and first and second horizontal deflection sections, respectively. The first and second coil-connection-wire sections are wound in a direction perpendicular to a tube axis of the CRT and along the straight portion, respectively. The first and second horizontal deflection sections are located towards the screen surface from the first and the second coil-connection-wire sections, respectively. In the deflection yoke, magnetic lines emitted from a rear end of the horizontal deflecting coil towards the electron gun decreases. An induced voltage generated at the sub-deflection yoke accordingly decreases, and thus, a noise on a screen noise produced due to the induced voltage is reduced.
    • 偏转线圈用于包括具有屏幕表面的玻璃管和用于容纳电子枪的直线部分的阴极射线管(CRT)。 偏转线圈包括主偏转线圈,其包括第一和第二水平偏转线圈以及第一和第二垂直偏转线圈以及设置在主偏转线圈侧朝向CRT的电子枪的副偏转线圈。 第一和第二水平偏转线圈具有基本上的鞍形,并且分别包括第一和第二线圈连接线部分以及第一和第二水平偏转部分。 第一和第二线圈连接线部分沿着垂直于CRT的管轴线并且沿着直线部分的方向被卷绕。 第一和第二水平偏转部分分别从第一和第二线圈连接线部分朝着屏幕表面定位。 在偏转线圈中,从水平偏转线圈的后端朝向电子枪发射的磁线减小。 因此,在副偏转线圈处产生的感应电压相应地减小,从而降低了由于感应电压而产生的屏幕噪声上的噪声。