Invention Grant
- Patent Title: Etch tool process indicator method and apparatus
- Patent Title (中): 蚀刻工具过程指示器方法和装置
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Application No.: US12638697Application Date: 2009-12-15
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Publication No.: US08206996B2Publication Date: 2012-06-26
- Inventor: Keren Jacobs Kanarik , Jorge Luque , Nicholas Webb
- Applicant: Keren Jacobs Kanarik , Jorge Luque , Nicholas Webb
- Applicant Address: US CA Fremont
- Assignee: Lam Research Corporation
- Current Assignee: Lam Research Corporation
- Current Assignee Address: US CA Fremont
- Agency: Beyer Law Group LLP
- Main IPC: H01L21/66
- IPC: H01L21/66

Abstract:
A method for providing a process indicator for an etching chamber is provided. A wafer with a blanket etch layer is provided into the etching chamber. A blanket etch is performed on the blanket etch layer. A blanket deposition layer is deposited over the blanket etch layer after performing the blanket etch has been completed. A thickness of the blanket etch layer and a thickness of the blanket deposition layer is measured. The measured thicknesses are used to determine a process indicator.
Public/Granted literature
- US20100093115A1 ETCH TOOL PROCESS INDICATOR METHOD AND APPARATUS Public/Granted day:2010-04-15
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