| 摘要 |
<p>Disclosed is a substrate glass for flat panel displays which contains, in weight percent, not less than 64% and not more than 69% of SiO<SUB>2</SUB>, not less than 0.5% and not more than 5% of Al<SUB>2</SUB>O<SUB>3</SUB>, not less than 2% and not more than 6% of Na<SUB>2</SUB>O, not less than 6% and not more than 14% of K<SUB>2</SUB>O, not less than 6% and not more than 12% of MgO, not less than 0.5% and not more than 8% of CaO, optionally not less than 0% and not more than 2% of SrO, not less than 0.5% and not more than 5% of ZrO<SUB>2</SUB>, and optionally not less than 0% and not more than 5% of BaO. In the substrate glass, (SiO<SUB>2</SUB> + Al<SUB>2</SUB>O<SUB>3</SUB> + ZrO<SUB>2</SUB>) is not less than 68% and not more than 75% while (CaO + MgO + BaO + SrO) is not less than 10% and less than 16%. The substrate glass has an average linear expansion coefficient from 30°C to 300°C of not less than 76 × 10<SUP>-7</SUP>/°C and not more than 88 × 10<SUP>-7</SUP>/°C, and the temperature at 10<SUP>2</SUP>dPa·s is not more than 1580°C.</p> |
