B phosphor for dry electrophotographic screen manufacturing of a cathode ray tube which is coated with silica and titanate type couplings, a method for manufacturing the same, a method for manufacturing a screen using the same, and a cathode ray tube

摘要

The present invention relates to a B phosphor dispersed and double coated with silica and titanate-based coupling to improve flow characteristics and charging characteristics of B phosphor particles, a method for producing the B phosphor, and a cathode ray tube having a screen formed of a B phosphor in which silica and titanium remain. Pipe.;A screen is manufactured by a dry electrophotographic screen manufacturing method using a B phosphor powder in which 0.5 wt% or less of silica and 2 wt% or less of titanate-based couplings are dispersed and coated on the surface of a particle, And a B fluorescent material that is dispersed and coated on the surface of silicon of 0.5 wt% or less and 2 wt% or less of titanium particles.;Accordingly, the B phosphor particles of the present invention have superior flow properties and charging characteristics, and have effects such as friction, charging of the B phosphor particles with a predetermined positive charge, and the like by the discharge electrode.