| 摘要 |
PURPOSE: A R-G phosphors for a dry electrophotographical screen of a CRT coated with silica and titanate system coupling, a method for preparing them, a method for manufacturing a screen using them, and a CRT manufactured by the method are provided to enhance the movability and chargeability of phosphor powder. CONSTITUTION: In a silica coating step, silica is distributed in a methanol, and R-G phosphors are gradually added to the silica. Then, methanol is again distributed in the methanol, and the resultant is sequentially filtered, dried, and then sieved. In a step coating the dried resultant with R-G phosphor powders, titanate system coupling is distributed in organic solvent such as N-hexane, R-G phosphor powders are gradually added to the methanol having the coupling distributed, the organic solvent is again distributed in the methanol, the resultant is filtered/dried, and the dried resultant is sieved.
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