Patent ID: 8703546
Filing Date: 2014-04-22
Classification: C25D,H01L

Abstract:
1. A method of forming a device comprising: performing a first plating process to form a first metallic feature comprising copper; performing a first activation treatment to a surface of the first metallic feature in a first activation treatment solution comprising a first treatment agent in de-ionized (DI) water; after the step of performing the first activation treatment, performing a second plating process to form a second metallic feature and contacting the surface of the first metallic feature, wherein the second metallic feature comprises nickel; after the step of performing the second plating process, performing a second activation treatment on a surface of the second metallic feature in a second activation treatment solution comprising a second treatment agent in DI water; and after the step of performing the second activation treatment, performing a third plating process to form a third metal feature contacting the surface of the second metallic feature, wherein the third metallic feature comprises a solder layer.