RED PHOSPHOR FOR LOW-VELOCITY ELECTRON BEAMS, ITS MANUFACTURE, AND FLUORESCENT DISPLAY TUBE

摘要

PURPOSE: To provide a red phosphor for slow electron beams prepared by adhering a conductive material to a red phosphor under the optimal conditions, a method for producing the same and a fluorescent display tube and to provide a fluorescent display tube provided with a red phosphor to which a conductive substance has been adhered optimally so as to have highest improved luminance of emission. ;CONSTITUTION: This red phosphor for slow electron beams is prepared by adhering a mixture containing a conductive material, a binder, a softener, a dispersant to a red phosphor. The method for producing the same is one for producing a red phosphor for slow electron beams, wherein the matrix is cadmium and a zinc sulfide system, and the activator is silver, and wherein the conductive substance together with the binder are ball-milled, the curing agent and the displersant are added to the mixture, the resulting mixture is milled with the red phosphor, and the obtained mixture is dried and sieved. The fluorescent display tube is prepared by using the red phosphor.;COPYRIGHT: (C)1992,JPO