Patent ID: 8087263

Claim:
A method for producing a glass for a display substrate comprising the steps of: preparing glass raw materials mixed so that a glass having a SiO 2 —Al 2 O 3 —B 2 O 3 —RO based composition, where RO is at least one of MgO, CaO, BaO, SrO and ZnO, and having a melting temperature corresponding to 10 2.5 poise of 1580° C. or higher is obtained; electrically melting the glass raw materials in a melting furnace constructed of a high zirconia refractory; and refining, homogenizing and forming the glass melt; wherein the glass raw materials are mixed so that an alkali metal content of the resultant glass is 0.01 to 0.2% as expressed in % by mass.