Patent ID: 6022651
Filing Date: 2000-02-08
Classification: G03G,H01J

Abstract:
A process for preparing a phosphor screen, comprising the steps of:coating a conductive layer on an inner surface of a panel for color CRT;overcoating a photoconductive layer on said conductive layer;establishing an electrostatic charge on said photoconductive layer;selectively irradiating said photoconductive layer with light;developing the photoconductive layer with a light-absorptive material including an isoparaffin solvent, graphite, a polymer, and a charge control agent;removing residual light-absorptive material on the developed photoconductive layer;fixing said light-absorptive material on the developed photoconductive layer to form a black matrix; andfixing electrostatically charged red, green and blue phosphor particles on the panel by a dry electrophotographic method where the black matrix is not formed.