| 摘要 |
PURPOSE:To form a fluorescent screen of good quality by using polyvinyl alcohol added in sensitive liquid and phosphor slurry to form light absorption layer and each color phosphor stripe with its polymerization degree distribution being specially regulated. CONSTITUTION:In forming a fluorescent screen of color cathode-ray tube, polyvinyl alcohol added in both sensitive liquid, which is used to form carbon layer serving as light absorption layer with reversal development and phosphor slurry, which is used to form each color phosphor stripe, is used with its polymerization degree distribution Mw/Mn to be regulated in 1.6-2.2, when molecular weight of weight mean is Mw, and that of number mean is Mn. Therefore regulating dispersion of molecular weight distribution enables contrast for water development to be enhanced without decreasing strength of adherence, and then removing such faults on phosphor stripes as pin-hole, developing residue, color mixture, and slack can be realized. |
