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Diaphragm strengthening rib

A diaphragm, base technology, applied in the direction of diaphragm structure, flat diaphragm, electrostatic transducer microphone, etc.

Inactive Publication Date: 2015-11-04
KNOWLES ELECTRONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some users are dissatisfied with these existing methods due to the limitations described above

Method used

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  • Diaphragm strengthening rib
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Embodiment Construction

[0017] Ways are described to provide a microphone with linear operation over a larger sound pressure range of the acoustic device. These approaches do not require additional processing steps in the manufacturing process. Furthermore, the provided diaphragm can operate over a larger operating range than previously possible.

[0018] In many of these embodiments, a diaphragm disposed in a microelectromechanical system (MEMS) microphone includes a base. The base is generally planar and has a first side and a second side. One or more protrusions are formed from and extend from the base. The protrusions are configured and arranged to strengthen the base and increase the range of sound pressure levels before distortion occurs. On the one hand, these approaches allow a wider range of sound pressure levels to be utilized before sound distortion occurs.

[0019] now refer to figure 1 , an example of microphone 100 is described. The microphone 100 includes a MEMS chip 102 (includi...

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Abstract

A diaphragm strengthening rib. A diaphragm having a base portion, the diaphragm is arranged in microelectromechanical systems for MEMS microphones. The base portion is substantially planar, and having a first side and a second side. One or more projections are formed from the base and extending through said base portion. Constructed and arranged to strengthen the base and increase the range was the distortion that occurs before the sound pressure level of the projection.

Description

technical field [0001] This application relates to acoustic devices, and more particularly to diaphragms used in such devices. Background technique [0002] Various types of acoustic equipment have been used over the years. An example of an acoustic device is a microphone. Typically, a microphone converts sound waves into electrical signals. Microphones often include multiple components, including microelectromechanical systems (MEMS) and integrated circuits such as application specific integrated circuits (ASICs). A MEMS chip typically has a diaphragm and a backplate disposed thereon. The change in acoustic energy moves the diaphragm, which changes the capacitance including the backplate, thereby generating an electrical signal. A MEMS chip (die) is usually arranged on a substrate or substrate together with an ASIC, and then the two are enclosed by a cover or cover. [0003] As mentioned, the above approach uses a diaphragm. The diaphragm is typically constructed of a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R19/04
CPCH04R7/04H04R19/04H04R2201/003
Inventor B·哈灵顿
Owner KNOWLES ELECTRONICS INC