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发明公开
EP0967629A1 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

  • 专利标题： A shadow mask type color cathode ray tube having a shadow mask with curls thereof reduced
  • 专利标题（中）： Farbkathodenstrahlröhremit einer eine reduzierteKrümmungsneigungbesitzenden Schattenmaske
  • 申请号： EP99111938.9
    申请日： 1999-06-23
  • 公开(公告)号： EP0967629A1
    公开(公告)日： 1999-12-29
  • 发明人: Ito, Hiroshi , Hosotani, Nobuhiko , Watanabe, Mitsuru , Yoshida, Haruhiko
  • 申请人： Hitachi, Ltd.
  • 申请人地址： 6 Kanda Surugadai 4-chome Chiyoda-ku, Tokyo 101-8010 JP
  • 专利权人： Hitachi, Ltd.
  • 当前专利权人： Hitachi, Ltd.
  • 当前专利权人地址： 6 Kanda Surugadai 4-chome Chiyoda-ku, Tokyo 101-8010 JP
  • 代理机构： Beetz & Partner Patentanwälte
  • 优先权： JP18094598 19980626
  • 主分类号： H01J29/07
  • IPC分类号： H01J29/07
A shadow mask type color cathode ray tube having a shadow mask with curls thereof reduced
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（中）：

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）。

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