| 摘要 |
PURPOSE:To form a film only on a metallic oxide film having an arbitrary pattern on a substrate by plating by sensitizing the substrate in a soln. contg. stannous chloride and hydrofluoric acid or hydrofluoride before activating the substrate. CONSTITUTION:A metallic oxide film having an arbitrary pattern is formed on an insulating substrate. The substrate is sensitized by immersion in a stannous chloride soln., and it is immersed in a soln. of hydrofluoric acid or hydrofluoride. Hydrofluoric acid or hydrofluoride may be added to the stannous chloride soln. to prepare a sensitizing soln. for sensitizing the substrate. The sensitized substrate is activated by immersion in >=1 kind of soln. selected from solns. of palladium, silver and gold salts. The activated substrate is subjected to electroless plating. |
