Title:
BONE-CONDUCTION MEMS MICROPHONE AND MOBILE TERMINAL
Document Type and Number:
WIPO Patent Application WO/2021/000163
Kind Code:
A1
Abstract:
Disclosed are a bone-conduction MEMS microphone and a mobile terminal. The bone-conduction MEMS microphone comprises: an MEMS microphone chip with a back cavity, a mass block, a shell, and a circuit board, wherein the MEMS microphone chip and the shell are arranged on the same side of the circuit board, the shell and the circuit board form a sealed cavity, the MEMS microphone chip is located in the cavity, the MEMS microphone chip comprises a backplane and a diaphragm, which are arranged opposite each other, and the mass block is fixed to the diaphragm. The cavity is designed to be a sealed cavity without a sound hole so as to prevent sound transmission by air. The mass block is fixed to the diaphragm of the MEMS microphone chip, and a vibration signal of sound transmitted by bones enables the mass block to vibrate so as to convert the sound into mechanical vibration of different frequencies, thereby achieving clear sound reproduction in a noisy environment, avoiding noise interference generated during sound transmission by air, and improving the quality of conducted sound.
Inventors:
ZENG PENG (CN)
WANG TIANJIAO (CN)
WANG TIANJIAO (CN)
Application Number:
PCT/CN2019/094063
Publication Date:
January 07, 2021
Filing Date:
June 30, 2019
Export Citation:
Assignee:
AAC ACOUSTIC TECH SHENZHEN CO LTD (CN)
International Classes:
H04R19/04
Foreign References:
| CN108513241A | 2018-09-07 | |||
| CN206698419U | 2017-12-01 | |||
| EP2320678A1 | 2011-05-11 | |||
| CN208434106U | 2019-01-25 | |||
| CN201312384Y | 2009-09-16 |
Attorney, Agent or Firm:
SHENZHEN CIPRUN INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
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