Patent ID: 6908870

Claim:
A glass material for a substrate, consisting essentially of the following glass ingredients: from 53 to 60 wt % of SiO 2 , from 4 to 8 wt % of Al 2 O 3 , from 3 to 4 wt % of B 2 O 3 , from 7 to 20 wt % of Li 2 O+Na 2 O+K 2 O, from 0.1 to 10 wt % of MgO, from 0.1 to 10 wt % of CaO, from 1 to 15 wt % of MgO+CaO, from 3 to 7 wt % of TiO 2 , from 4 to 8 wt % of ZrO 2 , from 0 to 5 wt % of ZnO, and from 0 to 8 wt % of La 2 O 3 .