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    A shadow mask type color cathode ray tube having a shadow mask with curls thereof reduced
    2.
    发明公开
    A shadow mask type color cathode ray tube having a shadow mask with curls thereof reduced 审中-公开
    Farbkathodenstrahlröhremit einer eine reduzierteKrümmungsneigungbesitzenden Schattenmaske

    公开(公告)号：EP0967629A1

    公开(公告)日：1999-12-29

    申请号：EP99111938.9

    申请日：1999-06-23

    申请人： Hitachi, Ltd.

    发明人： Ito, Hiroshi ,  Hosotani, Nobuhiko ,  Watanabe, Mitsuru ,  Yoshida, Haruhiko

    IPC分类号： H01J29/07

    CPC分类号： H01J29/07 ,  H01J2229/0772

    摘要： A color cathode ray tube includes an evacuated envelope having a panel portion (1), a neck portion (2), and a funnel portion (3) for connecting the panel portion and the neck portion, a generally rectangular shadow mask (5) having a curved apertured portion (14) having a multiplicity of electron-transmissive apertures, a curved imperforate portion (15) surrounding and integral with the apertured portion and a peripheral skirt portion (16), a generally rectangular support frame (6) for suspending the shadow mask by spot welding the peripheral skirt portion thereto, within said panel portion, a phosphor screen (4) formed on an inner surface of the panel portion, an electron gun (9) housed in the neck portion, and a deflection yoke (8). The shadow mask is provided with a descending step portion (20) extending along an outer edge of the imperforate portion, the peripheral skirt portion is formed by being bent back from an outer edge of the descending step portion, and the peripheral skirt portion is provided with a plurality of beads (17,18) extending in a direction of a height of the peripheral skirt portion and protruding inward in each side of the peripheral skirt portion.

    摘要翻译： 彩色阴极射线管包括具有面板部分（1），颈部部分（2）和用于连接面板部分和颈部部分的漏斗部分（3）的抽真空的外壳，具有大致矩形的荫罩（5） 具有多个电子透射孔的弯曲的有孔部分（14），围绕并与所述多孔部分一体的弯曲无孔部分（15）和周边裙部（16），大体上矩形的支撑框架（6） 在所述面板部内，形成在面板部的内表面上的荧光屏（4），容纳在颈部的电子枪（9）和偏转线圈（8） ）。 荫罩设置有沿着无孔部的外缘延伸的下降台阶部（20），外周裙部通过从下降台阶部的外缘向后弯曲而形成，并且设置周边裙部 具有沿着周边裙部的高度方向延伸并在周边裙部的每一侧向内突出的多个珠（17,18）。

    Cathode ray tube
    3.
    发明公开
    Cathode ray tube 有权
    阴极射线管

    公开(公告)号：EP0933797A1

    公开(公告)日：1999-08-04

    申请号：EP99101037.2

    申请日：1999-01-21

    申请人： Hitachi, Ltd.

    发明人： Yoshida, Haruhiko ,  Yoshioka, Hiroshi

    IPC分类号： H01J29/32 ,  H01J29/86

    CPC分类号： C23C10/02 ,  C23C10/06 ,  H01J29/861 ,  H01J2229/862

    摘要： A cathode ray tube comprising a panel portion (1) that has a phosphor screen formed over the inner surface of the faceplate (1A). The faceplate (1A) is formed such that the radius of curvature Ri of its inner surface (1A1) is almost equal to or larger than the radius of curvature Ro of its outer surface (1A2) and that the black matrix hole transmittivity is defined at a specified level. The cathode ray tube is provided with a simple means which allows the brightness in the peripheral area of the faceplate (1A) to match the brightness in the central area and which, even when the deflection angle is large, can reduce the deflection voltage supplied to the deflection yoke and thereby reduce the leakage magnetic field from the deflection yoke.

    摘要翻译： 一种阴极射线管，包括具有在面板（1A）的内表面上形成的荧光屏的面板部分（1）。 面板（1A）形成为其内表面（1A1）的曲率半径Ri几乎等于或大于其外表面（1A2）的曲率半径Ro，并且黑矩阵孔透射率被定义为 指定的级别。 阴极射线管具有一个简单的装置，它允许面板（1A）的周边区域的亮度与中心区域的亮度相匹配，并且即使当偏转角度大时，也可以减小提供给 偏转线圈，从而减小来自偏转线圈的泄漏磁场。