| 摘要 |
PROBLEM TO BE SOLVED: To carry out a treatment under specified conditions after incorporating phosphor particles in a serigraphic binder solution to firmly and efficiently form a coat of lead oxide or the like on the surface of a phosphor deposited on a substrate to afford an anodic conductive track for flat display screens. SOLUTION: The subject method for enclosing a phosphor comprises the following procedure: a solution of a serigraphic binder such as polyvinyl alcohol containing lead nitrite or indium nitrite is incorporated with particles of a phosphor selected from the group consisting of Gd2O2S: Tb, Y2SiO5: Tb, Y2SiO5: Ce, Y2O3: Eu and ZnO: Zn followed by depositing the phosphor on a substrate by serigraphy and then making an annealing at 400-500 deg.C for several hours to form a lead oxide or indium oxide coat on the surface of the phosphor deposited as described above; wherein it is preferable that 10 g of the solution contains 6-10 g of the phosphor and the solution is incorporated with a defoaming agent as well.
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