| 摘要 |
PROBLEM TO BE SOLVED: To provide a low-cost glass substrate which has a high linear thermal expansion coefficient and little elution of alkali components. SOLUTION: The glass substrate has a glass composition consisting of, buy mol, 55.0 to 75.0% SiO2 , 1.0 to 10.0% B2 O3 , 3.0 to 16.0% Al2 O3 , 5.0 to 15.0% Li2 O, <=14.0% Na2 O, <=12.0% K2 O, 16.0 to 25.0% Li2 O+Na2 O+K2 O, <=6% CaO and 0.01 to 2.0% Ta2 O5 .
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