Invention Grant
- Patent Title: Washing method of semiconductor manufacturing device component having gas holes
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Application No.: US17577461Application Date: 2022-01-18
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Publication No.: US11753714B2Publication Date: 2023-09-12
- Inventor: Tomohiro Matsumura , Akihiro Matsumoto
- Applicant: Shinryo Corporation
- Applicant Address: JP Kita Kyushu
- Assignee: Shinryo Corporation
- Current Assignee: Shinryo Corporation
- Current Assignee Address: JP Kita Kyushu
- Agency: Oblon, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP 19155485 2019.08.28
- Main IPC: B08B7/00
- IPC: B08B7/00 ; C23C16/44 ; B08B3/08 ; C23C16/455

Abstract:
A method for cleaning a semiconductor fabrication equipment part having gas holes used in single-wafer type semiconductor fabrication equipment for processing semiconductor wafers, wherein the semiconductor fabrication equipment part having gas holes is formed of aluminum or an aluminum alloy, and has a distribution plate having a plurality of gas holes, the method including: a step (1) of scanning a gas injection surface of the distribution plate, which is a surface facing the wafer, with a laser beam; and a step (2) of bringing the gas injection surface and insides of the gas holes into contact with a cleaning liquid containing an inorganic acid.
Public/Granted literature
- US20220136101A1 WASHING METHOD OF SEMICONDUCTOR MANUFACTURING DEVICE COMPONENT HAVING GAS HOLES Public/Granted day:2022-05-05
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