Patent ID: 8828898
Filing Date: 2014-09-09
Classification: C03C,H01L,Y02E

Abstract:
1. A glass plate, comprising: soda lime silica glass that comprises MgO, CaO, Na wherein the glass plate is obtained by a float process or a downdraw method, a content of MgO in the glass plate is at least 4.5% by mass percentage based on oxide, a content of Na a ratio of the content of MgO by mass percentage based on oxide, to a content of CaO by mass percentage based on oxide, ([MgO]/[CaO]), is larger than 1, a value Q obtained by formula (1) is at least 20: [MgO] is the content of MgO by mass percentage based on oxide, [CaO] is the content of CaO by mass percentage based on oxide, [Na [Al a content of B