Patent ID: 7497966
Filing Date: 2009-03-03
Classification: C09G,H01L

Abstract:
1. A chemical-mechanical polishing slurry for shallow trench isolation comprising: an aqueous abrasive solution, which is a mixture of deionized water, polishing particles, and a polishing particle dispersant; and an aqueous additive solution for increasing the removal selectivity, which is comprised of deionized water, 0.001 to 5 weight % of a poly(meth)acrylic acid polymer, 0.001 to 4 weight % of a nitrogen-containing organic cyclic compound, and 0.001 to 3 weight % of an amine-group compound, wherein 100 parts by weight of said aqueous abrasive solution is mixed with 50 to 300 parts by weight of said aqueous additive solution, and wherein said nitrogen-containing organic cyclic compound is one or more compounds selected from the group consisting of 1,3,5-triazine, 1,3,5-triazine-2,4,6-triol(cyanuric acid), 1,3,5-triazine-2,4,6-trichloride(cyanuric chloride), 1,3,5-triazine-2,4,6-trithiol(trithiocyanuric acid), 1,3,5-triazine-2,4,6-trithiol sodium salt, 1,3,5-triazine-2,4,7-trithiol trisodium salt nonahydrate, 3,5,7-triamino-s-triazolo[4,3-a]-s-triazine, 1,3,5-triacryloylhexahydro-1,3,5-triazine, 2,4,6-triaryloxy-1,3,5-triazine, triallyl-1,3,5-triazine-2,4,6-(1H,3H,5H)-trione, 5-azacytidine, 5-azacytosine, 4-amino-1-β-D-arabinofuracyl-1,3,5-triazine-2(1H)-one, cyanuric fluoride, 2-chloro-4,6-dimethoxy-1,3,5-triazine, 2,4,6-triallyloxy-1,3,5-triazime, 2,4,6-triphenyl-1,3,5-triazine, 2-chloro-4,6-diamino-1,3,5-triazine, melamine, 2,4,6-tri(2-pyridyl)-1,3,5-triazine, 2,4,6-tris(1′-aziridinyl)-1,3,5-triazine, 1,2,4-triazine-3,5(2H,4H)-dion(6-azurasyl), 6-aza-2-thymine, 6-aza-2-thiothymine, 6-aza-2-thiouridine, 6-azaurasyl, 3-amino-5,6-dimethyl-1,2,4-triazine, 3-(2-pyridyl )-5,6-diphenyl-1,2,4-triazine, 3-(2-pyridyl)-5,6-bis(5-sulfo-2-furyl)-1,2,4-triazine disodium salt trihydrate, 3-(2-pyridyl )-5,6-diphenyl-1,2,4-triazine p,p′-disulfonic acid monosodium hydrate, and 5,6-di-2-furyl-3-(2-pyridyl)-1,2,4,-triazine.