TECHNOLOGY FOCUS - CERAMICS AND GLASS - Preferred Components: The glass frit comprises first glass frit and second glass frit. The first glass frit is tellurium-bismuth-oxygen system glass frit. The second glass frit is tellurium-bismuth-lead-oxygen system glass frit.    TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The electric conductive powder comprises first silver powder and second silver powder. The surface active metal compound comprises oxide and/or fluoride of vanadium, molybdenum, tantalum, hafnium, chromium or niobium. The R2O is oxide and phosphate of lithium, sodium or potassium. Preferred Composition: The first glass frit comprises 30-80 wt.% tellurium dioxide, 1-15 wt.% bismuth oxide, 0.5-6 wt.% silicon dioxide, 1-10 wt.% surface active metal compound, 0.5-12 wt.% zinc oxide, 0-3 wt.% alumina, 0-5 wt.% bismuth trifluoride, 0-3 wt.% erbium oxide, 0-3 wt.% lanthanum oxide, 0-2 wt.% zirconium dioxide, 0-4 wt.% R2O, 0-2 wt.% magnesium oxide, 0-4 wt.% barium carbonate, 0-3 wt.% phosphorus pentoxide and 0-25 wt.% boron trioxide. The second glass material comprises 30-80 wt.% tellurium dioxide, 0.1-4.9 wt.% lead oxide, 1-15 wt.% bismuth oxide, 0.5-6 wt.% silica, 1-10 wt.% surface active metal compound, 0.5-12 wt.% zinc oxide, 0-3 wt.% alumina, 0-3 wt.% bismuth trifluoride, 0-3 wt.% erbium oxide, 0-3 wt.% lanthanum oxide, 0-2 wt.% zirconium dioxide, 0-4 wt.% R2O, 0-2 wt.% magnesium oxide, 0-3 wt.% phosphorus pentoxide, 0-25 wt.% boron trioxide and 0-3 wt.% cerium dioxide.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The dispersion system of the first silver powder is oleic acid, linoleic acid, linoleic acid, sodium stearate, and/or phosphorus-containing surfactant. The dispersion system of the second silver powder is oleic acid, linoleic acid, sodium linoleate, stearate, lauric acid, lecithin, and phosphorus-containing surfactant. The organic solvent is selected from dipropylene glycol dibenzoate, dodecyl alcohol esters butyl carbitol, terpineol, diethyl phthalate ester and/or dimethyl phthalate. The thickening agent is selected from rosin esters, maleic acid rosin ester, wax acid butyrate, cellulose acetate, poly methyl acrylic esters and alkyd resin. The organic thixotropic agent is selected from hydrogenated castor oil and polyolefin wax. The wetting and dispersing agent is selected from lecithin and tributyl citrate.