| 摘要 |
PURPOSE:To fully wet the inside of a phosphor layer while degrading interface tension of water by adding a water-soluble macro molecule showing interface activity. CONSTITUTION:The inside of glass 6 of a cathode-ray tube face part is applied with phosphor powder in order to form a phosphor layer 7. A water solution of 1.0wt% of hydroxy-propyl cellulose is injected into said phosphor layer 7 in order to form a uniform water solution layer 8 by removing the surplus water solution. Next, a toluene solution of 3.5wt% of an acryl resin is sprayed in an atomized form on the water solution layer 8 followed by drying and forming a thin film of the acryl resin on the inside of the phosphor layer 7 by evaporating moisture and a solvent in order to obtain a metal backing layer 10 by evaporating alminium thereon. Thereafter, hydroxy-propyl cellulose and the acryl resin are decomposed and removed by heating. The phosphor layer 7 can be fully wetted because the interface tension of the water solution of hydroxy-propyl cellulose is low compared with that of water. |
