Double-back-pole MEMS sound generation device and electronic equipment

A technology of sounding device and back pole, applied in the field of electronic equipment and sounding device, can solve the problems of complex structure of sounding device, unable to meet the development needs of modernization, low degree of automation, etc.

Inactive Publication Date: 2017-03-08
WEIFANG GOERTEK MICROELECTRONICS CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] The structure of this kind of sounding device is relatively complicated, which makes the volume of the sounding device larger, and most

Method used

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  • Double-back-pole MEMS sound generation device and electronic equipment
  • Double-back-pole MEMS sound generation device and electronic equipment

Examples

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Embodiment Construction

[0021] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that unless specifically stated otherwise, the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention.

[0022] The following description of at least one exemplary embodiment is actually only illustrative, and in no way serves as any limitation to the present invention and its application or use.

[0023] The technologies, methods, and equipment known to those of ordinary skill in the relevant fields may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be regarded as part of the specification.

[0024] In all examples shown and discussed herein, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of th...

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Abstract

The invention discloses a double-back-pole MEMS sound generation device and electronic equipment. A substrate is sequentially provided with a lower back pole, a vibrating film and an upper back pole in the mode of deposition and etching, wherein the lower back pole, the vibrating film and the upper back pole are supported by an insulating layer. The substrate is provided with a back cavity opposite to the lower back pole. The upper and lower back poles are configured to respectively apply DC electric signals with opposite voltages in a continuous manner, and the vibrating film is configured to apply an AC electric signal. The device provided by the invention can be used in a receiver or a loudspeaker, breaks through a conventional coil and magnet installation structure, is smaller in size, and can be manufactured through employing the MEMS technology.

Description

Technical field [0001] The present invention relates to the field of transducers. More precisely, the present invention relates to a sound generating device; the present invention also relates to an electronic device. Background technique [0002] The sound device is an important acoustic component in electronic equipment. As a transducer device that converts electrical signals into acoustic signals, it has been widely used in electronic products such as mobile phones and notebook computers. The existing speaker module includes a housing, and a vibration system and a magnetic circuit system arranged in the housing. The vibration system includes a diaphragm and a voice coil arranged on the diaphragm to drive the diaphragm to produce sound. The magnetic circuit system includes a magnet , Washer, etc. One end of the coil is connected to the diaphragm, and the other end extends into the magnetic gap of the magnetic circuit system. [0003] The structure of this kind of sounding devic...

Claims

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Application Information

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IPC IPC(8): H04R19/04
CPCH04R19/04H04R2400/11
Inventor 蔡孟锦李江龙邱冠勋李俊
Owner WEIFANG GOERTEK MICROELECTRONICS CO LTD
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