Invention Grant
- Patent Title: Methods for stabilizing contact surfaces of electrostatic chucks
- Patent Title (中): 稳定静电卡盘接触面的方法
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Application No.: US12850938Application Date: 2010-08-05
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Publication No.: US08906164B2Publication Date: 2014-12-09
- Inventor: Chris Kimball , Tom Stevenson , Peter Muraoka
- Applicant: Chris Kimball , Tom Stevenson , Peter Muraoka
- Applicant Address: US CA Fremont
- Assignee: Lam Research Corporation
- Current Assignee: Lam Research Corporation
- Current Assignee Address: US CA Fremont
- Main IPC: B08B7/00
- IPC: B08B7/00 ; B08B1/00 ; H01L21/683

Abstract:
Methods for stabilizing a ceramic contact surface of an electrostatic chuck, wherein the electrostatic chuck can be disposed within a reaction chamber of a semiconductor wafer processing assembly including a radio frequency source and a coolant gas supply are described herein. The method may include: clamping electrostatically a conditioning wafer to the ceramic contact surface of the electrostatic chuck; and cycling an output power of the radio frequency source and an output pressure of the coolant gas supply for multiple hot/cold cycles. Each of the hot/cold cycles includes a hot abrasion state and a cold abrasion state. At the hot abrasion state, the output power of the radio frequency source is relatively high and the output pressure of the coolant gas supply is relatively low to yield a relatively hot conditioning wafer. At the cold abrasion state, the output power of the radio frequency source is relatively low and the output pressure of the coolant gas supply is relatively high to yield a relatively cool conditioning wafer.
Public/Granted literature
- US20120031427A1 Methods For Stabilizing Contact Surfaces of Electrostatic Chucks Public/Granted day:2012-02-09
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