Invention Grant
- Patent Title: Etching apparatus and methods of cleaning thereof
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Application No.: US16837938Application Date: 2020-04-01
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Publication No.: US11222805B2Publication Date: 2022-01-11
- Inventor: Yu-Chi Lin , Huai-Tei Yang , Lun-Kuang Tan , Wei-Jen Lo , Chih-Teng Liao
- Applicant: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.
- Applicant Address: TW Hsinchu
- Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.
- Current Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.
- Current Assignee Address: TW Hsinchu
- Agency: McDermott Will & Emery LLP
- Main IPC: H01L21/683
- IPC: H01L21/683 ; H01L21/3065 ; H01J37/32

Abstract:
A method for cleaning debris and contamination from an etching apparatus is provided. The etching apparatus includes a process chamber, a source of radio frequency power, an electrostatic chuck within the process chamber, a chuck electrode, and a source of DC power connected to the chuck electrode. The method of cleaning includes placing a substrate on a surface of the electrostatic chuck, applying a plasma to the substrate, thereby creating a positively charged surface on the surface of the substrate, applying a negative voltage or a radio frequency pulse to the electrode chuck, thereby making debris particles and/or contaminants from the surface of the electrostatic chuck negatively charged and causing them to attach to the positively charged surface of the substrate, and removing the substrate from the etching apparatus thereby removing the debris particles and/or contaminants from the etching apparatus.
Public/Granted literature
- US20210313212A1 ETCHING APPARATUS AND METHODS OF CLEANING THEREOF Public/Granted day:2021-10-07
Information query
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