Enamel composition for dielectric layers, white pigments with improved wettability contained therein and plasma display panel containing the dielectric layer

摘要

The invention refers to an enamel composition for producing reflecting dielectric layers in plasma display panels, comprising as layer forming constituants 70 to 97 % by wt. of a glass frit composition and 3 to 30 % by wt. of a particulate whitening material. The whitening material comprises one or more thermally deactivated white pigments, which have been made by a process comprising heating of at least one white pigment in the absence or presence of a glass frit having a softening temperature of less than 600 DEG C at a temperature of 600 to 1000 DEG C for 0,1 to 10 hours. The invention further refers to a method for improving the wettability of white pigments by the above said thermal treatment. The enamel is used for producing a reflecting white dielectric layer in plasma display panels.