摘要:
The present invention relates to a method and apparatus for separating out metal copper according to an electroplating of copper using, for example, a solution of copper sulfate to produce copper interconnections on a surface of a substrate. The substrate is brought into contact, at least once, with a processing solution containing at least one of organic substance and sulfur compound which are contained in a plating solution. Thereafter, the substrate is brought into contact with the plating solution to plate the substrate.
摘要:
There is provided a copper-plating liquid free from an alkali metal and a cyanide which, when used in plating of a substrate having an outer seed layer and fine recesses of a high aspect ratio, can reinforce the thin portion of the seed layer and can embed copper completely into the depth of the fine recesses. The plating liquid contains divalent copper ions and a complexing agent, and an optional pH adjusting agent.
摘要:
The present invention relates to a method and apparatus for separating out metal copper according to an electroplating of copper using, for example, a solution of copper sulfate to produce copper interconnections on a surface of a substrate. The substrate is brought into contact, at least once, with a processing solution containing at least one of organic substance and sulfur compound which are contained in a plating solution. Thereafter, the substrate is brought into contact with the plating solution to plate the substrate.
摘要:
There is provided a method and apparatus for forming fine circuit interconnects that can form, by copper plating, copper interconnects in which movement of copper atoms is retarded or suppressed whereby electromigration is prevented. The method for forming fine circuit interconnects, comprising, providing a substrate for electronic circuit having fine circuit patterns which are covered with a barrier layer (4) and optionally a seed layer (5), forming a first plated film (6) on the surface of the substrate by copper alloy plating, and forming a second plated film (7) on the surface of the first plated film by copper plating.
摘要:
There is provided a copper-plating liquid free from an alkali metal and a cyanide which, when used in plating of a substrate having an outer seed layer and fine recesses of a high aspect ratio, can reinforce the thin portion of the seed layer and can embed copper completely into the depth of the fine recesses. The plating liquid contains divalent copper ions and a complexing agent, and an optional pH adjusting agent.