Invention Grant
- Patent Title: Stable, concentratable chemical mechanical polishing composition and methods relating thereto
- Patent Title (中): 稳定,可浓缩的化学机械抛光组合物及其相关方法
-
Application No.: US13039723Application Date: 2011-03-03
-
Publication No.: US08435896B2Publication Date: 2013-05-07
- Inventor: Hamed Lakrout , Jinjie Shi , Joseph Letizia , Xu Li , Thomas H. Kalantar , Francis Kelley , J. Keith Harris , Christopher J. Tucker
- Applicant: Hamed Lakrout , Jinjie Shi , Joseph Letizia , Xu Li , Thomas H. Kalantar , Francis Kelley , J. Keith Harris , Christopher J. Tucker
- Applicant Address: US DE Newark
- Assignee: Rohm and Haas Electronic Materials CMP Holdings, Inc.
- Current Assignee: Rohm and Haas Electronic Materials CMP Holdings, Inc.
- Current Assignee Address: US DE Newark
- Agent Thomas S. Deibert
- Main IPC: H01L21/302
- IPC: H01L21/302 ; H01L21/461

Abstract:
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; a water soluble cellulose; 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 of preparing 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.
Public/Granted literature
- US20120225555A1 Stable, concentratable chemical mechanical polishing composition and methods relating thereto Public/Granted day:2012-09-06
Information query
IPC分类: