Invention Grant
- Patent Title: Substrate treating method, substrate treating liquid and substrate treating apparatus
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Application No.: US16626905Application Date: 2018-06-12
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Publication No.: US11574821B2Publication Date: 2023-02-07
- Inventor: Yuta Sasaki
- Applicant: SCREEN Holdings Co., Ltd.
- Applicant Address: JP Kyoto
- Assignee: SCREEN Holdings Co., Ltd.
- Current Assignee: SCREEN Holdings Co., Ltd.
- Current Assignee Address: JP Kyoto
- Agency: Ostrolenk Faber LLP
- Priority: JPJP2017-145293 20170727,JPJP2017-146883 20170728
- International Application: PCT/JP2018/022488 WO 20180612
- International Announcement: WO2019/021664 WO 20190131
- Main IPC: C11D7/50
- IPC: C11D7/50 ; H01L21/67 ; H01L21/02 ; B08B3/04 ; C11D11/00 ; C11D7/32 ; C11D7/36 ; C11D7/30

Abstract:
A substrate treating method, liquid and apparatus are provided which can reduce the amount of sublimable substance used for the drying of a substrate while reducing the collapse of pattern. The substrate treating method includes a step of supplying a liquid to the pattern-formed surface of the substrate, a step of solidifying the liquid on the pattern-formed surface to form a solidified body and a step of subliming the solidified body so as to remove it from the pattern-formed surface. The substrate treating liquid includes a molten sublimable substance and a solvent, the freezing point of the sublimable substance being higher than the freezing point of the solvent. When the sublimable substance and the solvent are separated, the sublimable substance is settled and in the solidification step, the settled sublimable substance is solidified to have a height equal to or higher than the height of a pattern.
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