- 专利标题: Method for cleaning semiconductor wafer
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申请号: US17916939申请日: 2021-02-18
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公开(公告)号: US11862456B2公开(公告)日: 2024-01-02
- 发明人: Kensaku Igarashi
- 申请人: SHIN-ETSU HANDOTAI CO., LTD.
- 申请人地址: JP Tokyo
- 专利权人: SHIN-ETSU HANDOTAI CO., LTD.
- 当前专利权人: SHIN-ETSU HANDOTAI CO., LTD.
- 当前专利权人地址: JP Tokyo
- 代理机构: Oliff PLC
- 优先权: JP 20078793 2020.04.28
- 国际申请: PCT/JP2021/006204 2021.02.18
- 国际公布: WO2021/220590A 2021.11.04
- 进入国家日期: 2022-10-04
- 主分类号: H01L21/02
- IPC分类号: H01L21/02
摘要:
A method for cleaning a semiconductor wafer to clean a semiconductor wafer after polishing, including: performing a first ozone-water treatment step of cleaning the polished semiconductor wafer with ozone water to form an oxide film; performing a brush cleaning step of brush-cleaning the semiconductor wafer with carbonated water after the first ozone-water treatment step; and then performing a second ozone-water treatment step including cleaning the semiconductor wafer with hydrofluoric acid to remove the oxide film, followed by cleaning with ozone water to form an oxide film again. This second ozone-water treatment step is performed one or more times.
公开/授权文献
- US20230154742A1 METHOD FOR CLEANING SEMICONDUCTOR WAFER 公开/授权日:2023-05-18
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