| 摘要 |
PURPOSE:To improve the adhesion of a pigment to a phosphor and dispersibility of the pigment in a slurry by adhering particles of a the pigment to the surface of the phosphor particle by using a mixture wherein gelatin and a urea resin are incorporated in a specified ratio. CONSTITUTION:100 pts.wt. phosphor particle (A) (e.g. ZnS: Ag blue phosphor), a pigment particle (B) (e.g. cobalt blue pigment), 0.01-1.0 pt.wt. gelatin (C), 0.01-0.5 pt.wt. urea resin (D) are compounded in such a way that the wt. radio of the component C to the component D is 1-10:1 and then dispersed in a medium (E) of water and/or an alcohol to obtain a suspension. Then, agglomerates are separated from this suspension and dried at 150-200 deg.C to obtain the title phosphor wherein the component B is adherent to the surface of the component A with the component C and D. |
