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    • 8. 发明授权
    • Method of forming a fluorescent screen for a color picture tube
    • 形成彩色显像管荧光屏的方法
    • US4324850A
    • 1982-04-13
    • US125694
    • 1980-02-28
    • Yoshifumi TomitaMasahiro NishizawaHiroshi YokomizoHiromitu Nakai
    • Yoshifumi TomitaMasahiro NishizawaHiroshi YokomizoHiromitu Nakai
    • G03F7/28H01J9/227G03C5/00
    • G03F7/28H01J9/2271Y10S430/153
    • In forming a fluorescent screen for a color picture tube having triads of phosphor materials of the three primary colors arranged in a predetermined pattern on the inner surface of a panel, a photosensitive film which exhibits stickiness when exposed to a threshold amount of light is formed on the inner surface of the panel. Locations of the photosensitive film where the three color phosphor materials respectively occupy are exposed to light from a light source through a shadow mask mounted to the panel. The amount of exposure light for a first color phosphor material is the threshold or above and that for second and third phosphor materials is below the threshold. After completion of the light exposures for the first to third color phosphor materials through the shadow mask, the shadow mask is dismounted from the panel and the first color phosphor material is deposited onto the photosensitive film. A first back exposure is then carried out and the second color phosphor material is deposited onto the photosensitive film. Thereafter, a second back exposure is carried out and the third color phosphor material is deposited onto the photosensitive film.
    • 在形成用于在面板的内表面上以预定图案布置的三原色三原色的彩色显像管的荧光屏的情况下,在暴露于阈值量的光时呈现粘性的感光膜形成在 面板的内表面。 三色荧光体分别占据的感光膜的位置通过安装在面板上的荫罩从光源曝光。 第一彩色荧光体材料的曝光量为阈值以上,第二和第三荧光体材料的曝光量低于阈值。 在通过荫罩完成第一至第三种彩色荧光体材料的曝光完成之后,从面板上拆下荫罩,并将第一彩色荧光体材料沉积到感光膜上。 然后进行第一背面曝光,并将第二彩色荧光体材料沉积到感光膜上。 此后,进行第二反向曝光,并将第三彩色荧光体材料沉积到感光膜上。