Compositions of a glass substrate

摘要

Compositions for producing a glass substrate comprise SiO2 with a weight percentage (wt %) from 55% to 70%, Al2O3 from 10 wt % to 18 wt %, B2O3 from 10 wt % to 15 wt %, CaO from 0 wt % to 10 wt %, SrO from 0 wt % to 4 wt %, and a particular composition for forming a network structure of SiO2 from 0.01 wt % to 10 wt %, in which the particular composition can be selected from a group consisting of Y2O3 and La2O3.