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MEMS microphone and electronic device

A microphone and ASIC chip technology, applied in the field of sensors, can solve the problems of weak shielding performance of MEMS microphones, and achieve the effect of improving shielding performance and performance

Inactive Publication Date: 2020-10-09
WEIFANG GOERTEK MICROELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The main purpose of the present invention is to propose a MEMS microphone and electronic equipment, aiming to solve the technical problem that the shielding performance of the shell of the MEMS microphone is weak

Method used

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Embodiment Construction

[0032] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0033] It should be noted that if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for description purposes, and should not be understood as instructions or Implicit their relative importance or implicitly indicate the number of technical features indicated. Thus, a feature delimited with "first", "second" may expressly or implic...

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Abstract

The invention discloses an MEMS microphone and an electronic device. The MEMS microphone comprises a shell and a sensor chip arranged in the shell, wherein the shell comprises a shielding piece, a shell body with an open end, a bottom plate arranged at the open end of the shell body and a first shielding layer arranged on the outer surface of the shell body, a sound hole is formed in the shell body, the shielding piece covers the sound hole, and a through hole communicated with the sound hole is formed in the shielding piece. Therefore, comprehensive shielding protection can be formed for internal components such as the sensor chip in the shell through the first shielding layer and the shielding piece, so external electromagnetic interference is prevented.

Description

technical field [0001] The present invention relates to the technical field of sensors, in particular to a MEMS microphone and an electronic device. Background technique [0002] MEMS (Micro Electro-Mechanical System) microphone is an acousto-electric transducer made based on MEMS technology, which has the characteristics of small size, good frequency response characteristics and low noise. With the development of miniaturization and thinning of electronic devices, MEMS microphones are more and more widely used in electronic devices with sound-electric conversion functions such as mobile phones, tablet computers, cameras, hearing aids, smart toys and listening devices. [0003] In the related art, the MEMS microphone includes a housing and a sensor chip etc. arranged in the housing. However, the shielding performance of the housing is weak, which makes the MEMS microphone susceptible to interference from external factors (such as electromagnetic waves, etc.), which will aff...

Claims

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Application Information

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IPC IPC(8): H04R19/04
CPCH04R19/04H04R2201/003H04R2410/00
Inventor 端木鲁玉付博张硕
Owner WEIFANG GOERTEK MICROELECTRONICS CO LTD
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