SURFACE TREATMENT OF PHOSPHOR PARTICLES AND METHOD FOR A CRT SCREEN

摘要

The method of surface-treating dry-powdered phosphor particles for use in manufacturing a luminescent viewing screen for a CRT, to control the triboelectric charge characteristics of the phosphor particles, includes the steps of dissolving a suitable quantity of a polymeric coupling agent in a suitable solvent to form a mixture,surface-treating the phosphor particles by adding them to the mixture to provide a coating of the the coupling agent thereon, and then drying the surface-treated phosphor particles. The resultant dry-powdered surface-treated phosphor particles are used to make screen. The coupling agent controls the triboelectric charge characteristics of the phosphor particles during the electrophotographic manufacturing of the screen.