Invention Grant
US08148310B2 Composition and method for cleaning semiconductor substrates comprising an alkyl diphosphonic acid 有权
用于清洁包含烷基二膦酸的半导体衬底的组合物和方法

  • Patent Title: Composition and method for cleaning semiconductor substrates comprising an alkyl diphosphonic acid
  • Patent Title (中): 用于清洁包含烷基二膦酸的半导体衬底的组合物和方法
  • Application No.: US12888569
    Application Date: 2010-09-23
  • Publication No.: US08148310B2
    Publication Date: 2012-04-03
  • Inventor: Wai Mun Lee
  • Applicant: Wai Mun Lee
  • Main IPC: C11D7/36
  • IPC: C11D7/36
Composition and method for cleaning semiconductor substrates comprising an alkyl diphosphonic acid
Abstract:
The compositions and methods herein relate to the method for the removal of residues and contaminants from metal or dielectric surfaces. Particularly, a composition and method of cleaning residues after chemical mechanical polishing of a copper or aluminum surface of the semiconductor substrates. A method of cleaning semiconductor substrates comprising contacting the substrates with a solution of water, and sufficient amount of alkyl diphosphonic acid comprising alkyl diphosphonic acid selected from the group of 1 hydroxyethane 1,1 diphosphonic acid, methylene disphosphonic acid, hydroxymethylene diphosphonic acid, dichloromethylene disphosphonic acid, hydroxycyclohexylmethylene disphosphonic acid, 1-hydroxy-3-aminopropane 1,1 diphosphonic acid, 1-hydroxy-4-aminobutane 1,1 diphosphonic acid mixed with dodecylbenzenesulfonic acid, xylenesulfonic acid, toluenesulfonic acid, phosphonoformic acid, sulfamic acid, 2-amino ethane sulfonic acid, or fluoroboric acid or an organic carboxylic acid and pH is adjusted to from greater than 6 to about 10 with a metal ion free base, and a surfactant.
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