| 摘要 |
A glass substrate according to the present invention is characterized by having a glass composition that contains components in amounts falling within specified ranges, satisfies such a requirement that the total content of SiO2, Al2O3 and B2O3 is 67 to 76 mol%, and also satisfies requirements respectively represented by the formula: 0.6 ≤ Li2O/(Li2O+Na2O+K2O) ≤ 0.96 and the formula: 0.78 ≤ MgO/(MgO+CaO+SrO+BaO+ZnO) ≤ 0.98. |
