Patent ID: 9022834
Filing Date: 2015-05-05
Classification: C09G,C09K,H01L

Abstract:
1. A method of polishing a substrate having a silicon oxide film on a surface, the method comprising a step of polishing the silicon oxide film with a polishing pad while supplying a polishing solution between the silicon oxide film and the polishing pad, the polishing solution comprising abrasive grains, an additive and water, the additive comprising one or more compounds that each satisfy all of the following conditions i) to v): i) said one or more compounds comprise one or more cyclic structures comprising at least one carbon-carbon double bond, wherein the carbon-carbon double bond may include carbon-carbon bonds that form a resonance structure; ii) said one or more compounds comprise at least one and not more than four —OH structures, wherein the —OH structures may be a —COOH group; iii) said one or more compounds comprise not more than one —COOH group; iv) said one or more compounds comprise either or both of a first structure and a second structure; wherein the first structure comprises a carbon atom C wherein the second structure according to condition iv) is at least one selected from the group consisting of formulas n) to p)  wherein, in the formulas n) to p), the bond represented by a pair of solid line and dotted line indicates a bond forming a resonance structure and the carbon atoms C v) either or both the carbon atom C