Patent ID: 7494607

Claim:
A thick film conductive composition comprising: (a) electroconductive metal particles comprising a mixture of Ag particles and Al particles (b) glass frit wherein said glass frit is Pb-free; dispersed in (c) an organic medium, wherein the average diameter of said electroconductive metal particles is in the range of 0.5-10.0 μm, wherein said glass frit comprises, in weight percent total glass fit composition: SiO 2 0.5- 35, Al 2 O 3 0-5, B2O3 1-15, ZnO 0-15, and Bi 2 O 3 55-90, and further comprising: (d) one or more inorganic additives, wherein said inorganic additives are selected from the group consisting of (1) Cu and Bi; (2) compounds that can generate elemental metals selected from Cu and Bi; (3) oxides of Cu and Bi; and (4) mixtures thereof.