| 摘要 |
PROBLEM TO BE SOLVED: To provide a glass substrate for flat panel display device which is excellent in thermal shock resistance, crack resistance, and molding property, generates no thermal deformation and thermal contraction under heat treatment at a temperature of 570-600 deg.C and has characteristic of >=10.5Ω.cm volume electric resistivity (logρ). SOLUTION: The glass substrate for flat panel display device is characterized by having a composition (expressed by mass %) of 61 to 74% SiO2, 0 to <10% Al2O3, 1 to 10% MgO, 0 to 8% CaO, 1 to 15% SrO, 0 to 7% BaO, MgO+CaO+ SrO+BaO=12 to 23%, 0 to 8% Na2O, 2 to 12% K2O, Na2O+K2O=6 to 14%, and 0 to 7% ZrO2 and 65 to <75×10-7/ deg.C coefficient of thermal expansion.
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