Patent ID: 8513126
Filing Date: 2013-08-20
Classification: C09G,H01L

Abstract:
1. A chemical mechanical polishing slurry composition, consisting of, as initial components: water; an abrasive, wherein the abrasive is a colloidal silica abrasive; a halogenated quaternary ammonium compound according to formula (I): wherein R optionally, a diquaternary substance according to formula (II): wherein each A is independently selected from N and P; wherein R 1 is selected from a saturated or unsaturated C 1 -C 15 alkyl group, a C 6 -C 15 aryl group and a C 6 -C 15 aralkyl group; wherein R 2 , R 3 , R 4 , R 5 , R 6 and R 7 are each independently selected from selected from a hydrogen, a saturated or unsaturated C 1 -C 15 alkyl group, a C 6 -C 15 aryl group, a C 6 -C 15 aralkyl group and a C 6 -C 15 alkaryl group; and, wherein the anion in formula (II) can be any anion or combination of anions that balance the 2+ charge on the cation in formula (II); and, optionally, a pH adjusting agent selected from phosphoric acid, nitric acid, sulfuric acid, hydrochloric acid, ammonium hydroxide and potassium hydroxide; wherein the chemical mechanical polishing slurry composition has a pH of 2 to <7.