Cathode-ray tube fluorescent material and its method of manufacture

摘要

Electrolytes are attached to fluorescent particle surfaces to prevent open spots in cathode-ray tube coatings dried at high temperatures. Electrolytes that are sulfates, nitrates, or chlorides of alkali or alkaline-earth metals are added to a liquid suspension of fluorescent particles which have passed through a cleaning step. Electrolytes are added to the suspension to make the conductivity of the clear top liquid greater than 30 mu OMEGA -1 cm-1. The fluorescent particle preparation process is finished with a final dehydration and drying step.