Water-soluble phosphor material for color picture tubes and a process for manufacturing the same

摘要

The present invention provides a water-soluble gallate phosphor material with excellent luminous characteristics and a process for manufacturing of color CRT using the same material as above. The process improves luminous efficiency and color reproduction region and increases resolution due to decrease in electron spot from the current reduction by electron beams in luminance on the same phosphor screen, by introduction of the electrophotographic dry screening process without using water.