Invention Grant
US08148311B2 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.: US13164474
    Application Date: 2011-06-20
  • Publication No.: US08148311B2
    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 for the removal of residues and contaminants from metal or dielectric surfaces comprises at least one alkyl diphosphonic acid, at least one second acidic substance at a mole ratio of about 1:1 to about 10:1 in water, and pH is adjusted to from about 6 to about 10 with a basic compound, and optionally a surfactant. Particularly, a composition and method of cleaning residues after chemical mechanical polishing of a copper or aluminum surface of the semiconductor substrates. One of the embodiment is the method of using the compositions in dilution, wherein the solution may be diluted with DI water at dilution ratios, for example, of up to 1:10, up to 1:50, up to 1:100, up to 1:150, up to 1:250, and up to about 1:500 or any ratios therein.
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