LEAD FREE GLASS FOR FORMING BARRIER RIB, GLASS CERAMICS COMPOSITION FOR FORMING BARRIER RIB AND PLASMA DISPLAY PANEL

摘要

A lead-free glass for forming barrier ribs is provided to be free of Li2O or contain less than 0.5% of Li2O and be suitable for use in forming barrier ribs of a plasma display panel. A lead-free glass for forming barrier ribs comprises, in terms of % by mass of the following oxides, 20-35% of B2O3, 25-60% of ZnO, 0-6% of SiO2, 0.1-10% of Al2O3, 3-38% of MgO+CaO+SrO+BaO, 0-0.3% of Li2O, and 0.1-6% of Na2O+K2O. The lead-free glass has a softening point of 600 ‹C or less, and an average linear thermal expansion coefficient of 60Î10^(-7) - 85Î10^(-7)/‹C at 50-350 ‹C. A glass ceramics composition for forming barrier ribs includes 100 parts by mass of a powder of the lead-free glass and 0.1-40 parts by mass of an inorganic oxide powder.