Invention Grant
- Patent Title: Internal electrical contact for enclosed MEMS devices
- Patent Title (中): 封闭MEMS器件的内部电气接触
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Application No.: US14590839Application Date: 2015-01-06
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Publication No.: US09221676B2Publication Date: 2015-12-29
- Inventor: Kegang Huang , Jongwoo Shin , Martin Lim , Michael Julian Daneman , Joseph Seeger
- Applicant: InvenSense, Inc.
- Applicant Address: US CA San Jose
- Assignee: INVENSENSE, INC.
- Current Assignee: INVENSENSE, INC.
- Current Assignee Address: US CA San Jose
- Agency: Sawyer Law Group, P.C.
- Main IPC: B81C1/00
- IPC: B81C1/00

Abstract:
A method of fabricating electrical connections in an integrated MEMS device is disclosed. The method comprises forming a MEMS wafer. Forming a MEMS wafer includes forming one cavity in a first semiconductor layer, bonding the first semiconductor layer to a second semiconductor layer with a dielectric layer disposed between the first semiconductor layer and the second semiconductor layer, and etching at least one via through the second semiconductor layer and the dielectric layer and depositing a conductive material on the second semiconductor layer and filling the at least one via. Forming a MEMS wafer also includes patterning and etching the conductive material to form one standoff and depositing a germanium layer on the conductive material, patterning and etching the germanium layer, and patterning and etching the second semiconductor layer to define one MEMS structure. The method also includes bonding the MEMS wafer to a base substrate.
Public/Granted literature
- US20150336792A1 INTERNAL ELECTRICAL CONTACT FOR ENCLOSED MEMS DEVICES Public/Granted day:2015-11-26
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