R to G phosphors for the production of dry electrophotographic screens of cathode ray tubes coated with silica and titanate-based couplings, a method for producing the same, a screen manufacturing method using the same, and a cathode ray tube

摘要

The present invention relates to an R to G phosphor dispersed and double-coated by silica and titanate-based couplings so as to improve the flow characteristics and charging characteristics of R to G phosphor particles, and a process for producing the same. The R to G A cathode ray tube having a screen made of a phosphor is provided.;A screen is manufactured by a dry electrophotographic screen manufacturing method using an R to G phosphor powder in which 0.5 wt% or less of silica and 2 wt% or less of titanate type couplings are dispersed and coated on the surface of a particle, The screen of the present invention is characterized in that it contains 0.5 wt% or less of silica and 2 wt% or less of titanate-based couplings are dispersed and coated on the surface of the particles to remain the R to G phosphors.;As a result, the R to G phosphor particles of the present invention are superior in flow characteristics and charging characteristics, and have effects such as being able to be charged with a predetermined + electric charge by the discharge electrode or easily to the R to G phosphor particles .