Patent ID: 7763559
Filing Date: 2010-07-27
Classification: C03C,C09K

Abstract:
1. A glass substrate for a display, which is formed of a glass comprising, by mass %, 50 to 70% of SiO 5 to 18% of B 10 to 25% of Al 0 to 10% of MgO, 0 to 20% of CaO, 0 to 20% of SrO, 0 to 10% of BaO, 5 to 20% of RO (in which R is at least one member selected from the group consisting of Mg, Ca, Sr and Ba), and 0.20% or more but not more than 2.0% of R′ the glass containing, by mass %, 0.05 to 1.5% of an oxide of a metal that changes in valence number in a molten glass, and substantially containing none of As