Patent ID: 6068879
Filing Date: 2000-05-30
Classification: H01L,Y10S

Abstract:
A process of inhibiting corrosion of metal plugs formed in integrated circuits, comprising:applying a corrosion inhibiting compound on a partially fabricated integrated circuit surface in a manner allowing the corrosion inhibiting compound to seep into a seam of said metal plug and effectively coat a substantial portion of seam side-walls extending into the metal plug;contacting the partially fabricated integrated circuit surface including said metal plugs with a polishing pad to carry out chemical-mechanical polishing;introducing a slurry including a corrosion inhibiting compound on the polishing pad in sufficient concentration to further inhibit corrosion of said metal plugs of said partially fabricated integrated circuit surface; andpolishing said partially fabricated integrated circuit surface including the metal plugs wherein the corrosion inhibiting compound is applied to said partially fabricated integrated circuit surface prior to contacting said partially fabricated integrated circuit surface with the polishing pad.