Importance

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Abstract

There is provided a method for producing a metal/ceramic bonding substrate, the method being capable of improving the linearity of a pattern and preventing the occurrence of defective plating to improve the visual failure of plating and ensure the adhesion of plating. In the method for producing a metal/ceramic bonding substrate by bonding a metal plate of aluminum or an aluminum alloy to at least one side of a ceramic substrate to form a circuit pattern and by electroless-plating a predetermined portion of the surface of the metal plate with a nickel alloy, any one of the following processes (1) through (3) is carried out before the plating is carried out: (1) after a solvent peeling type resist is used for plating the predetermined portion of the surface of the metal plate, the resist is peeled off; (2) after the whole surface of the metal plate is plated, a resist is applied on a portion of the surface of the metal plate on which plating is required, and a part of the plating on which the resist is not applied is removed with an acidic etchant; and (3) after an alkali peeling type resist having a predetermined shape is applied on the surface of the metal plate, the surface of the metal plate on which the resist is not applied is pretreated by the palladium activating process using chemicals, all of which are acidic, and the surface of the metal plate is plated to peel off the resist.

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First Claim