| 摘要 |
PURPOSE:To prevent the exfoliation of carbon stripes of a color CRT by manufacturing the tube with the use of outside exposure procedure after the providing of a transparent protective film of a photo-setting resin on the glass panel on which carbon stripes are produced. CONSTITUTION:A transparent protective film 3 of a photo-setting resin which causes no depolymerization in reaction to hydrogen peroxide is provided on the whole surface of a glass panel 1 on which matrix type carbon stripes 2 are produced. A photoresist film 4 is then applied on the film 3 and developed after exposing red color and blue color portions, so photoresist film 4a corresponding to these color portions is left on the film 3. Next, green phosphor slurry 6 is applied on the whole surface of the panel and exposed from outside, and when inversion development with hydrogen peroxide is made green color stripes 6a are formed. Stripes of the other colors are also formed in the same way, the carbon stripes are prevented from exfoliation by the protective film, so that a color CRT of high precision can be manufactured.
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