Glass composition for use as substrate

摘要: PROBLEM TO BE SOLVED: To obtain a glass composition highly meltable with low specific gravity, hard to develop film debonding or cracking even if transparent electrodes are formed on the substrate made thereof, therefore suitable for e.g. substrates flat displays. SOLUTION: This has an average thermal expansion coefficient at 50-350 deg.C of 60×10 75×10 / and substantially comprises >74 but 74 <=86 wt.% (SiO2 +Al2 O3 ), 1-15.5 (Na2 O+K2 O), 14 <26 (MgO+CaO+Na2 O).