Invention Grant
US09571938B2 Microphone element and device for detecting acoustic and ultrasound signals
有权
用于检测声和超声信号的麦克风元件和装置
- Patent Title: Microphone element and device for detecting acoustic and ultrasound signals
- Patent Title (中): 用于检测声和超声信号的麦克风元件和装置
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Application No.: US14558993Application Date: 2014-12-03
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Publication No.: US09571938B2Publication Date: 2017-02-14
- Inventor: Christoph Schelling , Rolf Scheben , Ricardo Ehrenpfordt
- Applicant: Robert Bosch GmbH
- Applicant Address: DE Stuttgart
- Assignee: ROBERT BOSCH GMBH
- Current Assignee: ROBERT BOSCH GMBH
- Current Assignee Address: DE Stuttgart
- Agency: Norton Rose Fulbright US LLP
- Agent Gerard Messina
- Priority: DE102013224718 20131203
- Main IPC: H04R23/00
- IPC: H04R23/00 ; H04R19/00 ; B81B3/00 ; H04R19/04 ; H04R29/00

Abstract:
A capacitive MEMS microphone element is described which may be used optionally for detecting acoustic signals (microphone mode) or for detecting ultrasound signals in a defined frequency range (ultrasound mode). In the layered structure of the MEMS microphone element, at least two carrier elements for the two electrode sides of a capacitor system are formed one above the other and at a distance from one another for signal detection. At least one of the two carrier elements is sound pressure-sensitive and at least one of the two electrode sides includes at least two electrode segments which are electrically contactable independent of one another, which together with the at least one electrode of the other electrode side form partial capacitances which are independent of one another.
Public/Granted literature
- US20150156591A1 MEMS MICROPHONE ELEMENT AND DEVICE INCLUDING SUCH AN MEMS MICROPHONE ELEMENT Public/Granted day:2015-06-04
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