Patent ID: 8545715
Filing Date: 2013-10-01
Classification: B24B,C09G,C09K,H01L

Abstract:
1. A chemical mechanical polishing composition, consisting essentially of, as initial components: water; 0.01 to 0.5 wt % of an azole inhibitor, wherein the azole inhibitor is selected from the group consisting of benzotriazole (BTA), mercaptobenzotriazole (MBT), tolytriazole (TTA), imidazole and combinations thereof; 0.01 to 0.5 wt % of a complexing agent, wherein the complexing agent is selected from the group consisting of citric acid, lactic acid, malic acid, maleic acid, malonic acid, oxalic acid, tartaric acid and gluconic acid; 0 to 1.0 wt % of an ammonium halide, wherein the ammonium halide is selected from the group consisting of ammonium chloride, ammonium bromide and ammonium fluoride; 0.01 to 1 wt % of a phosphorus containing agent, wherein the phosphorus containing agent is phosphoric acid; 0.05 to 1.0 wt % of a hydrotrope, wherein the hydrotrope is selected from the group consisting of benzene sulfonate, C 0.1 to 40 wt % of a colloidal silica abrasive; 0 to 5.0 wt % of an oxidizer; 0.005 to 1.0 wt % of a polyvinyl alkyl ether; 0 to 0.01 wt % of a biocide, wherein the biocide is a thiazoline derivative; and, a pH adjusting agent; wherein the chemical mechanical polishing composition has a designed for polishing pH of 8 to 12; and, wherein the chemical mechanical polishing composition exhibits a stable manufacturing low-k dielectric material removal rate.