Title:
MICROPHONE AND ELECTRONIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/186884
Kind Code:
A1
Abstract:
The present invention relates to a microphone and an electronic device. The microphone comprises an encapsulation housing having an inner cavity, and a MEMS microphone chip and an ASIC chip provided in the inner cavity of the encapsulation housing; the microphone further comprises a support layer supported in the encapsulation housing by a spacing layer, and a sealed buffer cavity is formed by being enclosed by the support layer, the spacing layer, and the encapsulation housing; a first sound hole in communication with the outside and the buffer cavity is provided on the encapsulation housing; a second sound hole in communication with the buffer cavity and the inner cavity of the encapsulation housing is provided on the support layer or the spacing layer; the microphone further comprises at least one blocking block, the blocking block is provided in the buffer cavity, a gap is formed between the blocking block and an inner wall of the buffer cavity, and projections of the first sound hole and the second sound hole on the support layer are distributed at two sides of the blocking block and do not pass an edge of the blocking block; the blocking block is configured to block a part of an airflow flowing through the buffer cavity. One technical effect of the present invention is to effectively reduce an impact force applied by an external airflow to a diagram inside the MEMS microphone chip.
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Inventors:
PANG SHENGLI (CN)
YUAN ZHAOBIN (CN)
WANG SHUN (CN)
YI MINGKUN (CN)
QI LIKE (CN)
YUAN ZHAOBIN (CN)
WANG SHUN (CN)
YI MINGKUN (CN)
QI LIKE (CN)
Application Number:
PCT/CN2019/130082
Publication Date:
September 24, 2020
Filing Date:
December 30, 2019
Export Citation:
Assignee:
WEIFANG GOERTEK MICROELECTRONICS CO LTD (CN)
International Classes:
H04R19/04
Foreign References:
| CN109963244A | 2019-07-02 | |||
| CN102395093A | 2012-03-28 | |||
| CN109451384A | 2019-03-08 | |||
| CN109413554A | 2019-03-01 | |||
| CN103179493A | 2013-06-26 | |||
| CN203193890U | 2013-09-11 | |||
| CN109348388A | 2019-02-15 | |||
| US20150137284A1 | 2015-05-21 |
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