Patent ID: 6783867
Filing Date: 2004-08-31
Classification: H01L,H05K,Y10T

Abstract:
A member for a semiconductor device in which a high melting point metallizing layer consisting essentially of not less than 80 volume % of at least one high melting point metal selected from the group consisting of W, Mo, Ta, Ti and Zr and not greater than 20 volume % of glass frit, and an intervening metal layer which has a inciting point of not greater than 1,000Â° C. and consists essentially of at least one member selected from the group consisting of nickel, copper and iron or a member selected from the group consisting of nickel-phosphorous, nickel-boron, copper-zinc and copper-phosphorus are formed in this order on an aluminum nitride substrate material, and a conductor layer consisting essentially of copper is directly bonded as a circuit layer to said intervening metal layer, without forming an intervening solder layer, wherein said intervening metal layer is 2-40 &mgr;m in thickness.