Invention Grant
- Patent Title: Multi-resistivity Johnsen-Rahbek electrostatic clamp
- Patent Title (中): 多电阻Johnsen-Rahbek静电夹
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Application No.: US13930220Application Date: 2013-06-28
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Publication No.: US09281227B2Publication Date: 2016-03-08
- Inventor: William D. Lee , Ashwin M. Purohit
- Applicant: Axcelis Technologies, Inc.
- Applicant Address: US MA Beverly
- Assignee: Axcelis Technologies, Inc.
- Current Assignee: Axcelis Technologies, Inc.
- Current Assignee Address: US MA Beverly
- Agency: Eschweiler & Associates, LLC
- Main IPC: H01L21/683
- IPC: H01L21/683

Abstract:
A Johnsen-Rahbek (J-R) electrostatic clamp is provided for clamping a workpiece, wherein the J-R clamp has a dielectric layer having a clamping surface associated with the workpiece and a backside surface generally opposing the clamping surface. The dielectric layer has a plurality of regions, wherein each of the plurality of regions comprises one of a plurality of dielectric materials. Each of the plurality of dielectric materials has a baseline resistivity that is different from the remainder of the plurality of dielectric materials, and each of the plurality of regions of the dielectric layer has a baseline resistivity that is different from the remainder of the plurality of regions of the dielectric layer. A plurality of electrically conductive electrodes are associated with the backside surface of the dielectric layer, wherein each of the plurality of electrically conductive electrodes are associated with one or more of the plurality of regions of the dielectric layer.
Public/Granted literature
- US20150002983A1 Multi-Resistivity Johnsen-Rahbek Electrostatic Clamp Public/Granted day:2015-01-01
Information query
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