Enamel composition for dielectric layers, white pigments with improved wettability contained therein and plasma display panel containing the dielectric layer
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United States of America Patent
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Aug 10, 2004
Grant Date -
Mar 13, 2003
app pub date -
Dec 15, 2000
filing date -
Dec 16, 1999
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention refers to an enamel composition for producing reflecting dielectric layers in plasma display panels, comprising as layer forming constituents 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.degree. C. at a temperature of 600 to 1000.degree. 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.
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