Invention Grant
- Patent Title: Electrostatic attraction method
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Application No.: US16009759Application Date: 2018-06-15
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Publication No.: US10832930B2Publication Date: 2020-11-10
- Inventor: Katsunori Hirai , Yasuharu Sasaki
- Applicant: TOKYO ELECTRON LIMITED
- Applicant Address: JP Tokyo
- Assignee: TOKYO ELECTRON LIMITED
- Current Assignee: TOKYO ELECTRON LIMITED
- Current Assignee Address: JP Tokyo
- Agency: Rothwell, Figg, Ernst & Manebeck, P.C.
- Priority: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@11450424
- Main IPC: H01L21/683
- IPC: H01L21/683 ; H01J37/32

Abstract:
Disclosed is an electrostatic attraction method including: a first step in which a gas is introduced into a chamber in which the processing target object is to be processed before a processing target object is placed on a stage within the chamber, and plasma is generated by applying a high frequency power; a second step in which a DC voltage having a polarity opposite to a polarity of a DC voltage to be applied when attracting the processing target object, to an electrostatic chuck provided on the stage after the first step; a third step where extinguishing of the plasma by stopping application of the high frequency power is performed after the second step; and a fourth step where application of the DC voltage is stopped after the third step.
Public/Granted literature
- US20180366360A1 ELECTROSTATIC ATTRACTION METHOD Public/Granted day:2018-12-20
Information query
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