Invention Grant
- Patent Title: Systems and methods for dynamic alignment beam calibration
- Patent Title (中): 用于动态对准光束校准的系统和方法
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Application No.: US12810777Application Date: 2008-12-19
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Publication No.: US09269529B2Publication Date: 2016-02-23
- Inventor: Matt Rodnick , Christine Allen-Blanchette
- Applicant: Matt Rodnick , Christine Allen-Blanchette
- Applicant Address: US CA Fremont
- Assignee: LAM RESEARCH CORPORATION
- Current Assignee: LAM RESEARCH CORPORATION
- Current Assignee Address: US CA Fremont
- Agency: Buchanan, Ingersoll & Rooney PC
- International Application: PCT/US2008/087684 WO 20081219
- International Announcement: WO2009/086109 WO 20090709
- Main IPC: H01J37/20
- IPC: H01J37/20 ; H01J37/32 ; H01L21/68

Abstract:
A method for performing DA (Dynamic Alignment) beam calibration in a plasma processing system is provided. The method including acquiring a positional difference, the positional difference is acquired using an optical imaging approach. The optical imaging approach comprising of positioning the wafer on the end effector, taking a still image of the wafer on the end effector, processing the still image to ascertain the center of the wafer and an end effector-defined center defined by the end effector, and determining the positional difference between the center of the wafer and the end effector-defined center defined by the end effector. The method also includes centering a wafer with respect to an end effector by compensating for a positional difference between the wafer and the end effector with robot movement compensation. The method including moving the wafer and the end effector through DA beams associated with a plasma processing module. The method also includes obtaining a reference DA beam pattern by recording a break-and-make pattern of the DA beams. The break-and-make pattern occurring as the wafer and the end effector move through the DA beams.
Public/Granted literature
- US20100272347A1 SYSTEMS AND METHODS FOR DYNAMIC ALIGNMENT BEAM CALIBRATION Public/Granted day:2010-10-28
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