发明授权
- 专利标题: Ethylenediaminetetraacetic acid or its ammonium salt semiconductor process residue removal process
- 专利标题(中): 乙二胺四乙酸或其铵盐半导体工艺残渣去除工艺
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申请号: US09635650申请日: 2000-08-10
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公开(公告)号: US06367486B1公开(公告)日: 2002-04-09
- 发明人: Wai Mun Lee , Zhefei Jessie Chen
- 申请人: Wai Mun Lee , Zhefei Jessie Chen
- 主分类号: B08B304
- IPC分类号: B08B304
摘要:
An ethylenediaminetetraacetic acid or a mono-, di-, tri- or tetraammonium salt thereof residue cleaning composition removes photoresist and other residue from integrated circuit substrates. The balance of the composition is desirably made up of water, preferably high purity deionized water, or another suitable polar solvent. A process for removing photoresist or other residue from a substrate, such as an integrated circuit semiconductor wafer including titanium metallurgy, comprises contacting the substrate with the composition for a time and at a temperature sufficient to remove the photoresist or other residue from the substrate. Use of the ethylenediaminetetraacetic acid or a mono-, di-, tri- or tetraammonium salt thereof in the composition and process provides superior residue removal without attacking titanium or other metallurgy, oxide or nitride layers on the substrate.
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