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    • 34. 发明公开
    • A color cathode ray tube
    • FARB-Kathodestrahlrohr。
    • EP0633598A1
    • 1995-01-11
    • EP94110406.9
    • 1994-07-04
    • MATSUSHITA ELECTRONICS CORPORATION
    • Arimoto, NozomuNagadori, Hirokazu
    • H01J29/70H01J29/48
    • H01J29/703H01J2229/5684H01J2229/581H01J2229/5835
    • A pair of magnetic members (13) are provided on an outer surface of a neck tube (11) in a horizontal plane including three electron beams generated from an in-line type electron gun (12) so as to sandwich the three electron beams. The in-line electron gun (12) is enclosed in the thin cylindrical neck tube (11) extending to the rear portion of a funnel glass (9). The magnetic members (13) are disposed in an axis direction of the electron gun (12) so that at least parts thereof face each other. Providing the magnetic members (13) in this way suppresses the occurrence of the Lorentz force due to the interaction between the two outermost electron beams among the three electron beams and the external magnetic field (8) in the axis direction of the electron gun (12). Therefore, misconvergence of the electron beams caused by the Lorentz force is prevented.
    • 在颈管(11)的外表面上设有一对磁性构件(13),该水平面包括从直列式电子枪(12)产生的三束电子束,以夹持三束电子束。 一体式电子枪(12)被封装在延伸到漏斗玻璃(9)的后部的薄的圆柱形颈管(11)中。 磁性构件(13)沿着电子枪(12)的轴线方向设置,使得其至少部分彼此面对。 以这种方式提供磁性构件(13)抑制由于三个电子束中的两个最外侧电子束与电子枪(12)的轴向上的外部磁场(8)之间的相互作用而导致的洛伦兹力的发生 )。 因此,防止了由洛伦兹力引起的电子束的会聚失调。