Patent ID: 7208430

Claim:
A glass composition for covering electrodes, wherein the glass composition contains: 0 to 15 wt % SiO 2 ; 10 to 50 wt % B 2 O 3 ; 15 to 50 wt % ZnO; 0 to 10 wt % Al 2 O 3 ; 2 to 40 wt % Bi 2 O 3 ; 0 to 5 wt % MgO; 5 to 38 wt % CaO+SrO+BaO; 0 to 0.1 wt % Li 2 O+Na 2 O+K 2 O; 0 to 4 wt % MoO 3 ; and 0 to 4 wt % WO 3 , and the total of the contents of MoO 3 and WO 3 is in a range of 0.1 to 8 wt %.