发明授权
US08440097B2 Stable, concentratable, water soluble cellulose free chemical mechanical polishing composition
有权
稳定,浓缩,水溶性纤维素自由化学机械抛光组合物
- 专利标题: Stable, concentratable, water soluble cellulose free chemical mechanical polishing composition
- 专利标题(中): 稳定,浓缩,水溶性纤维素自由化学机械抛光组合物
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申请号: US13039705申请日: 2011-03-03
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公开(公告)号: US08440097B2公开(公告)日: 2013-05-14
- 发明人: Hamed Lakrout , Jinjie Shi , Joseph Letizia , Xu Li , Thomas H. Kalantar , Francis Kelley , J. Keith Harris , Christopher J. Tucker
- 申请人: Hamed Lakrout , Jinjie Shi , Joseph Letizia , Xu Li , Thomas H. Kalantar , Francis Kelley , J. Keith Harris , Christopher J. Tucker
- 申请人地址: US DE Newark
- 专利权人: Rohm and Haas Electronic Materials CMP Holdings, Inc.
- 当前专利权人: Rohm and Haas Electronic Materials CMP Holdings, Inc.
- 当前专利权人地址: US DE Newark
- 代理商 Thomas S. Deibert
- 主分类号: C09K13/00
- IPC分类号: C09K13/00
摘要:
A chemical mechanical polishing composition useful for chemical mechanical polishing a semiconductor wafer containing an interconnect metal is provided, comprising, as initial components: water; an azole inhibitor; an alkali metal organic surfactant; a hydrotrope; a phosphorus containing agent; optionally, a non-saccharide water soluble polymer; optionally, a water soluble acid compound of formula I, wherein R is selected from a hydrogen and a C1-5 alkyl group, and wherein x is 1 or 2; optionally, a complexing agent; optionally, an oxidizer; optionally, an organic solvent; and, optionally, an abrasive. Also, provided is a method for making a chemical mechanical polishing composition of the present invention and a method for chemical mechanical polishing of a substrate, comprising: providing a substrate, wherein the substrate is a semiconductor wafer having copper interconnects; providing a chemical mechanical polishing composition of the present invention; providing a chemical mechanical polishing pad; creating dynamic contact at an interface between the chemical mechanical polishing pad and the substrate with a down force of 0.69 to 34.5 kPa; and, dispensing the chemical mechanical polishing composition onto the chemical mechanical polishing pad at or near the interface between the chemical mechanical polishing pad and the substrate; wherein the chemical mechanical polishing composition exhibits a pH adjusted to a pH of 2 to 6 through the addition of at least one of phosphoric acid, magnesium hydroxide and lithium hydroxide.
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