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    • 2. 发明申请
    • Cathode ray tube
    • 阴极射线管
    • US20020014821A1
    • 2002-02-07
    • US09911170
    • 2001-07-23
    • Matsushita Electric Industrial Co., Ltd.
    • Hiroshi KobayashiYoshikazu Demi
    • H01J029/80
    • H01J29/07
    • Due to a slit formed in the dead space, a cathode ray tube capable of preventing incorrect hitting of color electron beams caused by the local doming phenomenon from occurring and thus preventing displacement of colors, unevenness in colors, and deterioration of luminance from occurring is provided. The cathode ray tube comprises a shadow mask having an effective area where lines of apertures for passing electron beams are arranged and a dead space formed on both outer sides of the effective area. In the dead space, a slit extending along the lines of the apertures is formed. Accordingly, the thermal expansion of the dead space caused by a temperature increase can be reduced, and the stress applied to the aperture line of the effective area adjacent to the dead space can be suppressed. As a result, the local doming phenomenon can be prevented from occurring.
    • 由于在死空间中形成的狭缝,可以提供能够防止由局部隆起现象引起的彩色电子束的不正确撞击并因此防止颜色偏移,颜色不均匀和亮度劣化发生的阴极射线管 。 阴极射线管包括荫罩,该荫罩具有有效面积,其中布置有用于通过电子束的孔的线,并且在有效区域的两个外侧形成死空间。 在死空间中,形成沿着孔的线延伸的狭缝。 因此,可以降低由温度升高引起的死空间的热膨胀,并且可以抑制施加到与死空间相邻的有效区域的开口线的应力。 结果,可以防止局部隆起现象发生。