| 摘要 |
The invention relates to a glass substrate whose chemical composition comprises the following components within limits defined thereafter and expressed in percentages by weight: 58-72 % by weight SiO2, 0, 8-3 by weight TiO2, 2-15 by weight B2O3, 10-25 by weight AI2O3, 5-12 by weight CaO, 0-3 by weight MgO, 0-6 by weight BaO, 0-4 by weight SrO, 0-3 by weight ZnO, and 0-1 by weight R2O.
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