METHOD OF PREPARING PHOSPHOR FOR DRY ELECTROPHOTOGRAPHICAL SCREEN OF CRT COATED WITH SILICA AND TITANATE SYSTEM COUPLING, METHOD FOR MANUFACTURING SCREEN USING THE PHOSPHOR AND CRT MANUFACTURED BY THE METHOD

摘要

PURPOSE: A method of preparing phosphor for a dry electrophotographical screen of a CRT coated with silica and titanate system coupling, a method for manufacturing a screen using the phosphor and a CRT manufactured by the method are provided to enhance the movability and chargeability of phosphor powder. CONSTITUTION: First, silica is coated and silica is distributed in methanol. Then, phosphor powders are gradually added to the methanol. Next, methanol is again distributed in the methanol having the phosphor powder added. Then, the resultant is filtered. Next, the resultant is dried. Then, silica coating powder is prepared by filtering the dried resultant. In addition, the phosphor powder coated with silica is again coated with titanate system coupling.