Rohm and Haas Electronic Materials Cmp Holdings, Inc.

Benson Po-Hsiang Chi

Lin-Chen Ho

Jia De Peng

A composition and method for chemical mechanical polishing a substrate containing tungsten to at least inhibit corrosion of the tungsten. The composition includes, as initial components: water; an oxidizing agent; a select polyethoxylated tallow amine; a dicarboxylic acid, a source of iron ions; a colloidal silica abrasive; and, optionally, a pH adjusting agent; and, optionally, a biocide. The chemical mechanical polishing method includes providing a chemical mechanical polishing pad, having a polishing surface; creating dynamic contact at an interface between the polishing pad and the substrate; and dispensing the polishing composition onto the polishing surface at or near the interface between the polishing pad and the substrate; wherein some of the tungsten is polished away from the substrate and corrosion of the tungsten is inhibited.

Chemical mechanical polishing composition and method for tungsten

A composition and method for chemical mechanical polishing a substrate containing tungsten to at least inhibit corrosion of the tungsten. The composition includes, as initial components: water; an oxidizing agent; select fatty amine ethoxylate; a dicarboxylic acid, a source of iron ions; a colloidal silica abrasive; and, optionally, a pH adjusting agent; and, optionally, a biocide. The chemical mechanical polishing method includes providing a chemical mechanical polishing pad, having a polishing surface; creating dynamic contact at an interface between the polishing pad and the substrate; and dispensing the polishing composition onto the polishing surface at or near the interface between the polishing pad and the substrate; wherein some of the tungsten is polished away from the substrate and corrosion of the tungsten is inhibited.

Growing community of inventors

Hsinchu County, Taiwan

Benson Po-Hsiang Chi