PASTE FOR FORMING PROTECTIVE FILM FOR DIELECTRIC

摘要

PROBLEM TO BE SOLVED: To obtain a paste which is easy to handle and can form an MgO dielectric protective film having excellent properties on a plasma display panel by using a combination of a magnesium salt of an organic acid with a magnesium alkoxide in a specified ratio as an MgO precursor. SOLUTION: This paste comprises MgO particles, an MgO precursor which forms an MgO binder when fired, and an additive comprising organic substances. The MgO precursor used is a combination of a magnesium salt of an organic acid with 5-98wt.% (in terms of MgO) magnesium alkoxide. The organic acid which constitutes the magnesium salt of the organic acid of the MgO precursor is desirably a 7-12C aliphatic monocarboxylic acid or alicyclic monocarboxylic acid. The magnesium alkoxide of the MgO precursor is desirably represented by the general formula: (RO)2 Mg (wherein R is methyl, ethyl or propyl). The purity of the MgO precursor is desirably 99.95% (in terms of Mg) or above, and the purity of MgO particles is desirably 99.95% or above.