| 摘要 |
PROBLEM TO BE SOLVED: To reduce a cost of manufacturing a glass substrate as well as to reduce thermal contraction of a glass substrate while increasing efficiency of making a thinner glass substrate in a process of manufacturing a display panel by inventing a non-alkali glass that excels in productivity (in particular, devitrification resistance) and has a fast etching rate with respect to an HF-based chemical and a high strain point.SOLUTION: The glass substrate of the present invention comprises, as a glass composition and in terms of mol%, 65 to 75% of SiO, 11 to 15% of AlO, 0 to 5% of BO, 0 to 5% of MgO, 0 to 10% of CaO, 0 to 5% of SrO, 0 to 6% of BaO and 0.01 to 5% of PO, with a molar ratio of (MgO+CaO+SrO+BaO)/AlOranging from 0.7 to 1.5.SELECTED DRAWING: None |
