GOLD CONDUCTOR PASTE AND PRODUCTION OF GLASS CERAMIC CIRCUIT BOARD

摘要

PROBLEM TO BE SOLVED: To improve the wire bonding performance, metallizing strength and appearance of a surface layer conductor formed on the surface of a glass ceramic board after fired. SOLUTION: In consideration of the existance of glass components on the surface of a glass ceramic board 11 fired in a usual firing method, a gold conductor paste used for a surface layer conductor 12 has 0-0.5 pts.wt. glass frit and 0.05-0.2 pts.wt. Rh added to. Thus, the precipitation of the glass components on the surface of the surface layer conductor 12 is restricted to assure good wire bonding performance and metallizing strength with the glass components on the surface of the board. The gold conductor paste used for the surface layer conductor of the glass ceramic board fired in a constrained firing method has 0.1-1 pts.wt. glass frit and 0.05-0.2 pts.wt. Rh added thereto, in consideration of less existing glass components on the surface of the board than those on a usually fired board.