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Capacitive microphone

A technology of a condenser microphone and an electrical connection plate is applied in the direction of an electrostatic transducer microphone, etc., which can solve the problems of low sensitivity of the microphone, and achieve the effect of improving elasticity and sensitivity.

Active Publication Date: 2013-03-06
AAC TECH PTE LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a kind of capacitive microphone, to solve the technical problem of low microphone sensitivity

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] see figure 2 , the capacitive microphone 2 provided by the present invention is mainly used in mobile phones to receive sound and convert the sound into electrical signals. The invention provided by the present invention achieves the effect of improving the sensitivity of the capacitive microphone by changing the cooperation relationship between the diaphragm and the supporting layer.

[0028] Referring to Fig. 5, the capacitive microphone 2 provided by the present invention includes a back plate 25, a diaphragm 21 opposite to the back plate 25 and connected by a support layer 24, and a sound hole 251 is arranged on the back plate 25, please refer to image 3 , the diaphragm 21 is provided with several through grooves (not shown), the through grooves point to the center of the diaphragm 21; the diaphragm 21 is divided into a vibrating part 211 and a supporting part, and the supporting part is a cantilever that divides the diaphragm into several equal parts. 212, one e...

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Abstract

The invention discloses a capacitive microphone which comprises a backboard, a supporting layer, a diaphragm which is opposite to the backboard and is connected with the backboard by the supporting layer and a sound orifice which is arranged on the backboard. The capacitive microphone is characterized in that a plurality of through grooves are arranged on the diaphragm and point to the center of the diaphragm. The diaphragm comprises a vibration part and a supporting part. The supporting part is a cantilever of the diaphragm which is divided into a plurality of parts. One end of the cantilever is fixed on the diaphragm and the other end protrudes out of the periphery of the diaphragm. The part of the cantilever which does not protrude out of the periphery of the diaphragm is arranged in the through grooves. The cantilever points to the center of the diaphragm. A slot is arranged on the cantilever and is vertical to the through grooves. The capacitive microphone with the structure can improve the sensitivity of the capacitive microphone.

Description

technical field [0001] The invention relates to a condenser microphone, in particular to a micro-electromechanical system microphone. Background technique [0002] With the development of wireless communication, there are more and more mobile phone users around the world. The requirements of users for mobile phones are not only satisfied with calls, but also to be able to provide high-quality call effects. Especially the current development of mobile multimedia technology, the mobile phone Call quality is more important. The microphone of a mobile phone is used as a voice pick-up device for the mobile phone, and its design directly affects the call quality. [0003] Micro-Electro-Mechanical-System Microphone (MEMS for short) is currently the most widely used microphone with better performance, and its packaging volume is smaller than that of traditional electret microphones. However, if the internal components of the MEMS microphone are subject to external contamination, su...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04R19/04
Inventor 张睿
Owner AAC TECH PTE LTD