초록 ▼

A glass composition for a substrate consisting essentially of from 52 to 62 wt % of SiO2, from 5 to 12 wt % of Al2O3, from 0 to 4 wt % of MgO, from 3 to 5.5 wt % of CaO, from 6 to 9 wt % of SrO, from 0 to 13 wt % of BaO, from 17 to 27 wt % of MgO+CaO+SrO+BaO, from 7 to 14 wt % of Li2O+Na2O+K2O, from

A glass composition for a substrate consisting essentially of from 52 to 62 wt % of SiO2, from 5 to 12 wt % of Al2O3, from 0 to 4 wt % of MgO, from 3 to 5.5 wt % of CaO, from 6 to 9 wt % of SrO, from 0 to 13 wt % of BaO, from 17 to 27 wt % of MgO+CaO+SrO+BaO, from 7 to 14 wt % of Li2O+Na2O+K2O, from 0.2 to 6 wt % of ZrO2, and from 0 to 0.6 wt % of SO3.

대표청구항 ▼

A glass composition consisting essentially of from 52 to 62 wt % of SiO2, from 5 to 12 wt % of Al2O3, from 0 to 4 wt % of MgO, from 3 to 5.5 wt % of CaO, from 6 to 9 wt % of SrO, from 0 to 13 wt % of BaO, from 17 to 27 wt % of MgO+CaO+SrO+BaO, from 7 to 14 wt % of Li20+Na2O+K2O, from 0.2 to 6 wt % o

A glass composition consisting essentially of from 52 to 62 wt % of SiO2, from 5 to 12 wt % of Al2O3, from 0 to 4 wt % of MgO, from 3 to 5.5 wt % of CaO, from 6 to 9 wt % of SrO, from 0 to 13 wt % of BaO, from 17 to 27 wt % of MgO+CaO+SrO+BaO, from 7 to 14 wt % of Li20+Na2O+K2O, from 0.2 to 6 wt % of ZrO2, and from 0 to 0.6 wt % of SO3, wherein the glass composition has a glass transition temperature of at least 600°C. and a devitrification temperature lower than the temperature at which the viscosity is 104 poise.