| 摘要 |
<p>A method of manufacturing a glass substrate for a display including the steps of: preparing a glass raw material blended so as to adjust as, on the basis of mass percentage, SiO2 40-70%, Al2O3 2-25%, B2O3 0-20%, MgO 0-3.5%, CaO 0-15%, SrO 0-10%, BaO 0-2%, ZnO 0-10%, R2O 0-25% (where R denotes at least one of Li, Na and K), As2O3 0-0.4%, Sb2O3 0-0.9%, and 0.1%<SnO2<0.5%; and melting the material and forming the substrate with contact with a platinum group element or a platinum group element alloy in at least a part of the melting and forming; wherein the substrate has a surface area of 0.1 m2 or more, a thickness of 2.5 mm or less, and surface projections of 2 pieces/m2 or less, the surface not being ground, and wherein the substrate has 40 pieces/kg or less of stones of a platinum group element or a platinum group element alloy.</p> |
