Invention Grant
- Patent Title: Electrostatic chuck with polymer protrusions
- Patent Title (中): 具有聚合物突起的静电卡盘
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Application No.: US13266657Application Date: 2010-05-13
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Publication No.: US08879233B2Publication Date: 2014-11-04
- Inventor: Richard A. Cooke , Nate Richard , Steven Donnell , Mark Vose , Yan Liu
- Applicant: Richard A. Cooke , Nate Richard , Steven Donnell , Mark Vose , Yan Liu
- Applicant Address: US MA Billerica
- Assignee: Entegris, Inc.
- Current Assignee: Entegris, Inc.
- Current Assignee Address: US MA Billerica
- Agency: Hamilton, Brook, Smith & Reynolds, P.C.
- International Application: PCT/US2010/034667 WO 20100513
- International Announcement: WO2010/132640 WO 20101118
- Main IPC: H01T23/00
- IPC: H01T23/00 ; H01L21/683 ; H01L21/687

Abstract:
In accordance with an embodiment of the invention, there is provided an electrostatic chuck. The electrostatic chuck comprises a surface layer activated by a voltage in an electrode to form an electric charge to electrostatically clamp a substrate to the electrostatic chuck. The surface layer includes a plurality of polymer protrusions and a charge control layer to which the plurality of polymer protrusions adhere, the plurality of polymer protrusions extending to a height above portions of the charge control layer surrounding the plurality of polymer protrusions to support the substrate upon the plurality of polymer protrusions during electrostatic clamping of the substrate.
Public/Granted literature
- US20120044609A1 Electrostatic Chuck With Polymer Protrusions Public/Granted day:2012-02-23
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