Invention Grant
- Patent Title: Protective cover for electrostatic chuck
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Application No.: US15840905Application Date: 2017-12-13
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Publication No.: US10541171B2Publication Date: 2020-01-21
- Inventor: Vijay D. Parkhe
- Applicant: Applied Materials, Inc.
- Applicant Address: US CA Santa Clara
- Assignee: APPLIED MATERIALS, INC.
- Current Assignee: APPLIED MATERIALS, INC.
- Current Assignee Address: US CA Santa Clara
- Agency: Lowenstein Sandler LLP
- Main IPC: H01L21/687
- IPC: H01L21/687 ; H01L21/683 ; H01L21/67 ; C04B35/48 ; C04B35/44 ; C04B35/505 ; C23C14/08 ; C23C16/44 ; B08B7/00 ; H01J37/32

Abstract:
A protective cover for an electrostatic chuck may include a conductive wafer and a plasma resistant ceramic layer on at least one surface of the conductive wafer. The plasma resistant ceramic layer covers a top surface of the conductive wafer, side walls of the conductive wafer and an outer perimeter of a bottom surface of the conductive wafer. Alternatively, a protective cover for an electrostatic chuck may include a plasma resistant bulk sintered ceramic wafer and a conductive layer on a portion of a bottom surface of the plasma resistant bulk sintered ceramic wafer, wherein a perimeter of the bottom surface is not covered. The protective layer may be used to protect an electrostatic chuck during a plasma cleaning process.
Public/Granted literature
- US20180102275A1 PROTECTIVE COVER FOR ELECTROSTATIC CHUCK Public/Granted day:2018-04-12
Information query
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