Invention Grant
US09227842B2 Method for MEMS structure with dual-level structural layer and acoustic port
有权
具有双层结构层和声学端口的MEMS结构方法
- Patent Title: Method for MEMS structure with dual-level structural layer and acoustic port
- Patent Title (中): 具有双层结构层和声学端口的MEMS结构方法
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Application No.: US14084569Application Date: 2013-11-19
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Publication No.: US09227842B2Publication Date: 2016-01-05
- Inventor: Michael Julian Daneman , Mei-Lin Chan , Martin Lim , Fariboz Assaderaghi , Erhan Polatkan Ata
- Applicant: Invensense, Inc.
- Applicant Address: US CA San Jose
- Assignee: INVENSENSE, INC.
- Current Assignee: INVENSENSE, INC.
- Current Assignee Address: US CA San Jose
- Agency: IPxLaw Group LLP
- Agent Maryam Imam
- Main IPC: H01L21/00
- IPC: H01L21/00 ; B81C1/00

Abstract:
A method for fabricating a MEMS device includes depositing and patterning a first sacrificial layer onto a silicon substrate, the first sacrificial layer being partially removed leaving a first remaining oxide. Further, the method includes depositing a conductive structure layer onto the silicon substrate, the conductive structure layer making physical contact with at least a portion of the silicon substrate. Further, a second sacrificial layer is formed on top of the conductive structure layer. Patterning and etching of the silicon substrate is performed stopping at the second sacrificial layer. Additionally, the MEMS substrate is bonded to a CMOS wafer, the CMOS wafer having formed thereupon a metal layer. An electrical connection is formed between the MEMS substrate and the metal layer.
Public/Granted literature
- US20140239353A1 METHOD FOR MEMS STRUCTURE WITH DUAL-LEVEL STRUCTURAL LAYER AND ACOUSTIC PORT Public/Granted day:2014-08-28
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