Invention Grant
- Patent Title: MEMS device with differential vertical sense electrodes
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Application No.: US13960032Application Date: 2013-08-06
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Publication No.: US09242851B2Publication Date: 2016-01-26
- Inventor: Aaron A. Geisberger , Margaret L. Kniffin
- Applicant: Aaron A. Geisberger , Margaret L. Kniffin
- Applicant Address: US TX Austin
- Assignee: FREESCALE SEMICONDUCTOR, INC
- Current Assignee: FREESCALE SEMICONDUCTOR, INC
- Current Assignee Address: US TX Austin
- Agent Charlene R. Jacobsen
- Main IPC: B81B3/00
- IPC: B81B3/00 ; B81C1/00 ; H01L41/113 ; G01P15/125 ; G01C19/574 ; G01P15/08

Abstract:
A MEMS device includes a first sense electrode and a first portion of a sense mass formed in a first structural layer, where the first sense electrode is fixedly coupled with the substrate and the first portion of the sense mass is suspended over the substrate. The MEMS device further includes a second sense electrode and a second portion of the sense mass formed in a second structural layer. The second sense electrode is spaced apart from the first portion of the sense mass in a direction perpendicular to a surface of the substrate, and the second portion of the sense mass is spaced apart from the first sense electrode in the same direction. A junction is formed between the first and second portions of the sense mass so that they are coupled together and move concurrently in response to an imposed force.
Public/Granted literature
- US20150041927A1 MEMS DEVICE WITH DIFFERENTIAL VERTICAL SENSE ELECTRODES Public/Granted day:2015-02-12
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