Invention Grant
- Patent Title: Process of forming a microphone using support member
- Patent Title (中): 使用支撑构件形成麦克风的过程
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Application No.: US12244840Application Date: 2008-10-03
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Publication No.: US08309386B2Publication Date: 2012-11-13
- Inventor: Jason W. Weigold
- Applicant: Jason W. Weigold
- Applicant Address: US MA Norwood
- Assignee: Analog Devices, Inc.
- Current Assignee: Analog Devices, Inc.
- Current Assignee Address: US MA Norwood
- Agency: Sunstein Kann Murphy & Timbers LLP
- Main IPC: H01L21/00
- IPC: H01L21/00

Abstract:
A method of forming a microphone forms a backplate, and a flexible diaphragm on at least a portion of a wet etch removable sacrificial layer. The method adds a wet etch resistant material, where a portion of the wet etch resistant material is positioned between the diaphragm and the backplate to support the diaphragm. Some of the wet etch resistant material is not positioned between the diaphragm and backplate. The method then removes the sacrificial material before removing any of the wet etch resistant material added during the prior noted act of adding. The wet etch resistant material then is removed substantially in its entirety after removing at least part of the sacrificial material.
Public/Granted literature
- US20090029501A1 Process of Forming a Microphone Using Support Member Public/Granted day:2009-01-29
Information query
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