CN211089887U - Microphone structure and electronic equipment - Google Patents
Microphone structure and electronic equipment Download PDFInfo
- Publication number
- CN211089887U CN211089887U CN201922235563.XU CN201922235563U CN211089887U CN 211089887 U CN211089887 U CN 211089887U CN 201922235563 U CN201922235563 U CN 201922235563U CN 211089887 U CN211089887 U CN 211089887U
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- sound hole
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- side wall
- protective shell
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- 230000001681 protective effect Effects 0.000 claims abstract description 58
- 239000000758 substrate Substances 0.000 claims description 17
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- 230000000694 effects Effects 0.000 abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 2
- 239000000428 dust Substances 0.000 description 8
- 239000007788 liquid Substances 0.000 description 8
- 230000002265 prevention Effects 0.000 description 8
- 238000004078 waterproofing Methods 0.000 description 8
- 230000005611 electricity Effects 0.000 description 5
- 230000003068 static effect Effects 0.000 description 5
- JAYCNKDKIKZTAF-UHFFFAOYSA-N 1-chloro-2-(2-chlorophenyl)benzene Chemical compound ClC1=CC=CC=C1C1=CC=CC=C1Cl JAYCNKDKIKZTAF-UHFFFAOYSA-N 0.000 description 3
- 101100084627 Neurospora crassa (strain ATCC 24698 / 74-OR23-1A / CBS 708.71 / DSM 1257 / FGSC 987) pcb-4 gene Proteins 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/08—Mouthpieces; Microphones; Attachments therefor
Abstract
The utility model relates to a microphone structure and electronic equipment, include: a sound sensing element provided with a first sound hole; the protective shell forms a sealed protective cavity outside the first sound hole, and a second sound hole is formed in the protective shell; the waterproof membrane is fixed in the protection cavity, and the waterproof membrane divides the protection cavity into a first cavity communicated with the first sound hole and a second cavity communicated with the second sound hole. The utility model discloses a technological effect lies in, separates sound sensing component inside and outside mutually through setting up the water proof membrane, avoids producing influence or damage to microphone internal element.
Description
Technical Field
The utility model relates to an acoustoelectric technology field, more specifically, the utility model relates to a microphone structure and electronic equipment.
Background
A microphone is a transducer that converts sound into an electronic signal, with many delicate components inside the microphone. The working environment of the microphone is complex, and the microphone is suitable for being used in various environments. When the microphone works under various use environments, the microphone can be influenced by various factors, and the performance of the microphone can be reduced or the microphone can be damaged.
In the working environment of the microphone, there may be influence factors such as dust, liquid, strong airflow, static electricity, etc. which affect the normal operation of the microphone. For example, dust or liquid entering from the sound hole of the microphone may affect the performance of the element and damage the element.
Therefore, a new technical solution is needed to solve the above technical problems.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a new technical scheme.
According to the utility model discloses a first aspect provides: a microphone structure comprising:
a sound sensing element provided with a first sound hole;
the protective shell forms a sealed protective cavity outside the first sound hole, and a second sound hole is formed in the protective shell;
the waterproof membrane is fixed in the protection cavity, and the waterproof membrane divides the protection cavity into a first cavity communicated with the first sound hole and a second cavity communicated with the second sound hole.
Optionally, the sound sensing element comprises:
a top plate;
the side wall surrounds the edge of the top plate and is fixed;
the base plate is fixed on the side wall and is opposite to the top plate;
the side wall is provided with the first sound hole.
Optionally, the waterproof membrane has an area larger than a cross-sectional area of the first sound hole.
Optionally, the sound sensing element comprises:
a top plate;
the side wall surrounds the edge of the top plate and is fixed;
the base plate is fixed on the side wall and is opposite to the top plate;
the substrate is provided with the first acoustic hole.
Optionally, the waterproof membrane has an area larger than a cross-sectional area of the first sound hole.
Optionally, a PCB is further fixed between the protective shell and the substrate, and a third sound hole is formed in the PCB and communicates the first sound hole and the first cavity.
Optionally, the protective shell comprises:
the protective shell side wall is fixed around the first sound hole, and the waterproof membrane is fixed with the protective shell side wall;
the protective shell baffle is fixed with the protective shell side wall and then forms the protective cavity, and the second sound hole is formed in the protective shell baffle.
Optionally, the plane of the waterproof membrane is parallel to the radial direction of the first sound hole.
Optionally, the material of the waterproof membrane is ePTFE.
According to another aspect of the present invention, an electronic device is provided, including the above-mentioned microphone structure.
The utility model discloses a technological effect lies in, separates sound sensing element inside and outside mutually through setting up the water proof membrane, avoids external factors such as outside dust, liquid to exert an influence or damage to microphone internal element.
Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments of the invention, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a schematic structural view of a protective shell disposed on a side wall according to an embodiment of the present invention.
Fig. 2 is a schematic view of a state in which the waterproofing membrane is subjected to pressure in the embodiment of fig. 1.
Fig. 3 is a schematic structural view of a protective shell disposed under a substrate according to an embodiment of the present invention.
Fig. 4 is a schematic view of a state in which the waterproofing membrane is subjected to pressure in the embodiment of fig. 3.
In the drawing, 1 is a sound sensor, 11 is a top plate, 12 is a side wall, 13 is a substrate, 14 is a first sound hole, 2 is a shield, 21 is a shield side wall, 22 is a shield baffle, 23 is a second sound hole, 3 is a waterproof film, 4 is a PCB, and 41 is a third sound hole.
Detailed Description
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 the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
Techniques and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be considered a part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
According to an embodiment of the present disclosure, the present invention provides a microphone structure, as shown in fig. 1, the microphone structure includes:
a sound sensing element 1, said sound sensing element 1 being provided with a first sound aperture 14; sound reception and transmission of the sound sensing element 1 are performed through the first sound hole 14.
The protective shell 2 forms a sealed protective cavity outside the first sound hole 14, and a second sound hole 23 is formed in the protective shell 2;
In this embodiment, the shield case 2 is provided outside the first sound hole 14 provided on the sound sensing element 1, and the shield case 2 forms a sealed shield cavity to the first sound hole 14. The protective shell 2 is sealed against the first sound hole 14, for example, by being fixed by means of bonding or welding. The waterproof membrane 3 is arranged in the protection cavity, the protection cavity is divided into a first cavity and a second cavity by the waterproof membrane 3, and the first cavity is not communicated with the second cavity. The first cavity communicates with the first sound hole 14 and the second cavity communicates with the second sound hole 23. Thus, the first cavity is communicated with the interior of the sound sensing element 1, and the second cavity is communicated with the external space of the sound sensing element 1.
Different factors influencing the performance of the microphone exist outside the microphone due to different environments. For example, dust, liquid, strong airflow, static electricity, etc. existing in the external environment. The shield shell 2 disposed outside the first sound hole 14 separates the first sound hole 14 from the outside by the waterproof membrane 3 inside. Factors affecting the microphone performance are avoided from entering the interior of the sound sensing element 1 from the first sound hole 14. The sound sensing element 1 has the advantages of dust prevention, liquid prevention, strong airflow prevention, static electricity prevention and the like, and the reliability of microphone products is improved. The factors influencing the microphone performance from the outside are prevented from entering the microphone structure, and the influence or damage to the internal elements of the microphone is avoided.
For example, after the protective casing 2 and the waterproof film 3 are provided, only the second sound hole 23 is communicated with the outside, and foreign matters such as dust, liquid, strong airflow and the like outside the microphone can enter the protective cavity only through the second sound hole 23. After entering the protection chamber, the waterproof membrane 3 blocks the entry of foreign matter from the first sound hole 14. So that foreign substances cannot affect the components inside the sound sensing element 1.
In addition, sound waves generated by external sound enter the second cavity in the protective cavity through the second sound hole 23, the sound waves drive the waterproof membrane 3 to vibrate, the vibration of the waterproof membrane 3 drives the air pressure change of the first cavity, and the air pressure change is transmitted to the sensing part in the sound sensing element 1 through the first sound hole 14. This enables external sound to be received effectively.
For example, as shown in fig. 2, the waterproof membrane 3 vibrates toward the first chamber due to external pressure. At this time, the gas inside the acoustic sensor element 1 is compressed, and the gas pressure changes. During the vibration process, the pressure change of the air pressure allows the sound sensing element 1 to receive the sound.
Optionally, the material of the waterproof membrane 3 is ePTFE. The waterproof membrane 3 made of ePTFE material has excellent waterproof and windproof functions. The use of this material can improve the protective effect of the waterproof film 3 on the sound sensing element 1, and improve the reliability of the waterproof film 3.
In one embodiment, as shown in fig. 1, the sound sensing element 1 includes: a top plate 11; a side wall 12, wherein the side wall 12 is enclosed at the edge of the top plate 11 and fixed; a base plate 13, wherein the base plate 13 is fixed on the side wall 12 and is opposite to the top plate 11; the first sound hole 14 is provided in the side wall 12.
In this embodiment, the side wall 12 is enclosed around the edge of the top plate 11 and fixed, and the base plate 13 is fixed to the side wall 12 opposite to the top plate 11. The top plate 11, the side wall 12 and the base plate 13 form an outer structure of the sound sensing element 1, and the interior of the enclosed structure is an acoustic cavity of the sound sensing element 1.
The first sound hole 14 is arranged in the side wall 12 such that the protective shell 2 forms a seal against the first sound hole 14 and the water-proof membrane 3 forms a protection against the sound cavity of the sound sensing element 1 in the side wall 12. This structure can increase the protection and avoid increasing the thickness of the acoustic sensor device 1 itself. The increase in the thickness of the assembly of the acoustic sensing element 1 is avoided. The thickness of the microphone structure itself is not affected.
Optionally, the area of the waterproofing membrane 3 is larger than the cross-sectional area of the first sound hole 14.
In this instance, the waterproof membrane 3 has an area larger than the cross-sectional area of the first sound hole 14, so that the waterproof membrane 3 can effectively separate the first sound hole 14 from the outside. To protect the internal structure of the sound sensing element 1. When the area of the waterproof film 3 is large, more foreign substances can be blocked first. Secondly, the waterproof membrane 3 is subjected to a pressure per unit area which is reduced when subjected to an external pressure. The waterproof membrane 3 is helped to recover the initial state, and the service life is prolonged. The larger the area of the waterproof membrane 3 is, the smaller the sound loss is in the sound transmission process, and the effect of ensuring the sound quality is obtained.
For example, the waterproof membrane 3 may be as large as the area of the sidewall 12, so as to maximize the protection performance and ensure the sound quality effect without affecting the thickness of the sound sensing element 1.
In one example, the side wall 12 forms a square, circular arc or other shape around the top plate 11. For example, the side wall 12 is enclosed on the top plate 11 to form a square structure, and the first sound hole 14 is provided on one face of the square structure. The waterproofing membrane 3 forms a protection for the first sound hole 14 on this face. The area of the waterproofing membrane 3 is larger than the cross-sectional area of the first sound hole 14, and the area of the waterproofing membrane 3 may be set at the maximum as the same as the surface, for example, the shape and the area of the waterproofing membrane 3 are the same as the surface. The overall thickness of the acoustic sensing element 1 is not affected.
In one embodiment, as shown in fig. 3, the sound sensing element 1 includes: a top plate 11; a side wall 12, wherein the side wall 12 is enclosed at the edge of the top plate 11 and fixed; a base plate 13, wherein the base plate 13 is fixed on the side wall 12 and is opposite to the top plate 11; the first acoustic hole 14 is provided in the substrate 13.
In this embodiment, the side wall 12 is enclosed around the edge of the top plate 11 and fixed, and the base plate 13 is fixed to the side wall 12 opposite to the top plate 11. The top plate 11, the side wall 12 and the base plate 13 form an outer structure of the sound sensing element 1, and the interior of the enclosed structure is an acoustic cavity of the sound sensing element 1.
The first sound hole 14 is provided on the substrate 13. In the structure of the sound sensing element 1, the area of the substrate 13 is larger, and the arrangement of the first sound hole 14 on the substrate 13 can further set the area of the waterproof membrane 3 larger, which helps to improve the performance of the waterproof membrane 3 in the microphone structure.
For example, the waterproof membrane 3 has an area larger than the cross-sectional area of the first sound hole 14. So that the waterproof membrane 3 can effectively separate the first sound hole 14 from the outside. To protect the internal structure of the sound sensing element 1. Further, the waterproof membrane 3 has a large area, and when the waterproof membrane 3 receives an external pressure, the pressure per unit area is reduced. The waterproof membrane 3 is helped to recover the initial state, and the service life is prolonged. The larger the area of the waterproof membrane 3 is, the smaller the sound loss is in the sound transmission process, and the effect of ensuring the sound quality is obtained. Therefore, in this embodiment, the area of the waterproof membrane 3 can be further increased to further improve the performance of the microphone structure.
In one embodiment, as shown in fig. 3, a PCB 4 is further fixed between the protective shell 2 and the substrate 13, a third sound hole 41 is formed in the PCB 4, and the third sound hole 41 communicates the first sound hole 14 with the first cavity. The first cavity, the third sound hole 41, the first sound hole, and the sound cavity of the sound sensing element 1 are made to communicate.
In this embodiment, the PCB board 4 is disposed between the shield case 2 and the substrate 13. The reliability of the microphone structure can be improved.
For example, the area of the structure of the PCB 4 may be set larger than the area of the substrate 13, which can further increase the area of the waterproof film 3.
For example, after the shield case 2 is provided, the usable area of the substrate 13 is reduced. Connections to wires or other components within the microphone are required on the substrate 13. By providing the PCB board 4, a mounting location is provided for the wiring or other components that need to be provided.
In other examples, the PCB board 4 may be replaced by other boards such as wood board, metal board, plastic board, ceramic board, etc. But are not limited to the sheet material categories described above. This also makes it possible to increase the area in which the waterproof film 3 is provided and to fix other elements externally connected to the substrate 13 to the plate material. For example, the element is fixed to the board and connected to the substrate 13 through a wiring.
As shown in fig. 4, the waterproof membrane 3 is in a state of being vibrated toward the first chamber by the external pressure. The waterproof film 3 can improve the reliability of the microphone structure. The microphone structure has the functions of dust prevention, liquid prevention, strong airflow prevention, static electricity prevention and the like.
In one embodiment, the protective shell 2 comprises: the protective shell side wall 21 is fixed around the first sound hole 14, and the waterproof membrane 3 is fixed with the protective shell side wall 21; the protective shell baffle 22, protective shell baffle 22 forms with protective shell lateral wall 21 after fixed the protection chamber, second sound hole 23 sets up on protective shell baffle 22.
In this embodiment, the protective shell 2 includes a protective shell side wall 21 and a protective shell baffle 22, and the protective shell side wall 21 and the protective shell baffle 22 are fixed to form a seal for the first sound hole 14. The waterproof membrane 3 is fixed on the side wall 21 of the protective shell to divide the protective cavity into a first cavity and a second cavity. The second sound hole 23 of the guard casing baffle 22 communicates the second cavity with the outside, and the first sound hole 14 communicates the first cavity with the sound cavity inside the sound sensing element 1.
For example, the side wall 21 of the protective casing and the baffle 22 of the protective casing may be separately manufactured and then fixed together, which facilitates the installation of the waterproof membrane 3.
Firstly, fixing the side wall 21 of the protective shell outside the first sound hole 14, then fixing the waterproof membrane 3 on the side wall 21 of the protective shell, and finally fixing the baffle 22 of the protective shell. Or the waterproof membrane 3 is fixed on the side wall 21 of the protective shell, then the baffle 22 of the protective shell is fixed, and finally the side wall 21 of the protective shell is fixed outside the first sound hole 14.
For example, the shield case side wall 21 and the shield case baffle 22 are integrally formed, and are integrally formed when the shield case 3 is manufactured, and after the waterproof film 3 is fixed to the shield case side wall 21, the shield case 2 is integrally fixed to the outside of the first sound hole 14. Thus, the number of workpieces is reduced, and the installation process is simplified.
In one embodiment, the plane of the waterproofing membrane 3 is parallel to the radial direction of the first sound hole 14.
In this example, the reliability of the sound sensing element 1 receiving the external sound can be improved. When the plane of the waterproof membrane 3 is parallel to the radial direction of the first sound hole 14, the sound entering from the second sound hole 23 drives the waterproof membrane 3 to vibrate, and the vibrating waterproof membrane 3 can accurately transmit sound waves along the direction of the first sound hole 14.
For example, the second sound hole 23 is coaxial with the first sound hole 14, and sound waves enter from the second sound hole 23 to drive the waterproof film 3 to vibrate. The waterproof membrane 3 transmits sound along the direction vertical to the surface where the waterproof membrane is located, air fluctuation in the direction is driven, the sound cavity in the sound sensing element 1 can be accurately transmitted along the first sound hole 14, and sound receiving is effectively achieved.
According to another aspect of the present invention, an electronic device is provided, which includes the above-mentioned microphone structure.
The electronic equipment with the microphone structure also has the protection performance of the microphone structure. For example, preventing dust, liquid, strong airflow, static electricity, etc. from affecting the performance of sound sensing elements within an electronic device.
For example, the electronic device may be a mobile phone, a computer, or the like.
Although some specific embodiments of the present invention have been described in detail by way of illustration, it should be understood by those skilled in the art that the above illustration is only for purposes of illustration and is not intended to limit the scope of the invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.
Claims (10)
1. A microphone structure, comprising:
a sound sensing element provided with a first sound hole;
the protective shell forms a sealed protective cavity outside the first sound hole, and a second sound hole is formed in the protective shell;
the waterproof membrane is fixed in the protection cavity, and the waterproof membrane divides the protection cavity into a first cavity communicated with the first sound hole and a second cavity communicated with the second sound hole.
2. The microphone structure of claim 1, wherein the sound sensing element comprises:
a top plate;
the side wall surrounds the edge of the top plate and is fixed;
the base plate is fixed on the side wall and is opposite to the top plate;
the side wall is provided with the first sound hole.
3. The microphone structure of claim 2 wherein the waterproof membrane has an area larger than a cross-sectional area of the first acoustic aperture.
4. The microphone structure of claim 1, wherein the sound sensing element comprises:
a top plate;
the side wall surrounds the edge of the top plate and is fixed;
the base plate is fixed on the side wall and is opposite to the top plate;
the substrate is provided with the first acoustic hole.
5. The microphone structure of claim 4, wherein the waterproof membrane has an area larger than a cross-sectional area of the first sound hole.
6. The microphone structure of claim 4, wherein a PCB is further fixed between the protective shell and the substrate, and a third sound hole is formed in the PCB and communicates the first sound hole with the first cavity.
7. The microphone structure of claim 1, wherein the shield shell comprises:
the protective shell side wall is fixed around the first sound hole, and the waterproof membrane is fixed with the protective shell side wall;
the protective shell baffle is fixed with the protective shell side wall and then forms the protective cavity, and the second sound hole is formed in the protective shell baffle.
8. The microphone structure of claim 1 wherein the waterproof membrane lies in a plane parallel to a radial direction of the first acoustic aperture.
9. The microphone structure of claim 1, wherein the material of the waterproof membrane is ePTFE.
10. An electronic device, characterized in that it comprises a microphone arrangement according to any of claims 1-9.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922235563.XU CN211089887U (en) | 2019-12-12 | 2019-12-12 | Microphone structure and electronic equipment |
| PCT/CN2019/129555 WO2021114427A1 (en) | 2019-12-12 | 2019-12-28 | Microphone structure and electronic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922235563.XU CN211089887U (en) | 2019-12-12 | 2019-12-12 | Microphone structure and electronic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211089887U true CN211089887U (en) | 2020-07-24 |
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ID=71624099
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922235563.XU Active CN211089887U (en) | 2019-12-12 | 2019-12-12 | Microphone structure and electronic equipment |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN211089887U (en) |
| WO (1) | WO2021114427A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113242500A (en) * | 2021-04-26 | 2021-08-10 | 歌尔微电子股份有限公司 | MEMS microphone and electronic equipment |
| CN113301485A (en) * | 2021-06-10 | 2021-08-24 | 南昌逸勤科技有限公司 | Microphone assembly and electronic equipment |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113825330B (en) * | 2021-06-21 | 2023-08-04 | 荣成歌尔微电子有限公司 | Waterproof module and electronic equipment |
| WO2023043596A1 (en) * | 2021-09-17 | 2023-03-23 | Invensense, Inc. | WATERPROOF MEMS PRESSURE SENSOR PACKAGE WITH A METAL LID AND AN EMBEDDED ePTFE FILTER AND PROCESS OF MAKING |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI113934B (en) * | 2002-10-24 | 2004-06-30 | Nokia Corp | Waterproof acoustic structure suitable for speaker function |
| CN201491214U (en) * | 2009-06-05 | 2010-05-26 | 瑞声声学科技(常州)有限公司 | Mems microphone |
| CN102395093A (en) * | 2011-10-31 | 2012-03-28 | 歌尔声学股份有限公司 | Silicic miniature microphone |
| CN106686505B (en) * | 2017-01-05 | 2020-05-05 | 惠州Tcl移动通信有限公司 | Waterproof acoustic device and electronic equipment |
-
2019
- 2019-12-12 CN CN201922235563.XU patent/CN211089887U/en active Active
- 2019-12-28 WO PCT/CN2019/129555 patent/WO2021114427A1/en active Application Filing
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113242500A (en) * | 2021-04-26 | 2021-08-10 | 歌尔微电子股份有限公司 | MEMS microphone and electronic equipment |
| CN113301485A (en) * | 2021-06-10 | 2021-08-24 | 南昌逸勤科技有限公司 | Microphone assembly and electronic equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021114427A1 (en) | 2021-06-17 |
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