CN220711640U - Waterproof microphone and electronic equipment - Google Patents
Waterproof microphone and electronic equipment Download PDFInfo
- Publication number
- CN220711640U CN220711640U CN202322061678.8U CN202322061678U CN220711640U CN 220711640 U CN220711640 U CN 220711640U CN 202322061678 U CN202322061678 U CN 202322061678U CN 220711640 U CN220711640 U CN 220711640U
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- waterproof
- microphone
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- sheet
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- 239000000758 substrate Substances 0.000 claims abstract description 39
- 125000006850 spacer group Chemical group 0.000 claims abstract description 23
- 238000004806 packaging method and process Methods 0.000 claims abstract description 4
- 238000000926 separation method Methods 0.000 claims abstract description 3
- 239000012528 membrane Substances 0.000 claims description 33
- 238000002955 isolation Methods 0.000 claims description 11
- 239000011521 glass Substances 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 230000007547 defect Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000004078 waterproofing Methods 0.000 description 2
- 206010063385 Intellectualisation Diseases 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002329 infrared spectrum Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 230000005236 sound signal Effects 0.000 description 1
- 238000002211 ultraviolet spectrum Methods 0.000 description 1
Abstract
The utility model provides a waterproof microphone and electronic equipment, wherein the waterproof microphone comprises a substrate, an acoustic hole arranged on the substrate and a shell which forms a packaging structure with the substrate; a first sunken groove is formed in one side, close to the shell, of the substrate, a waterproof film covering the sound hole is arranged in the first sunken groove, and a separation sheet covering the first sunken groove is arranged on the substrate; the spacer and the substrate form an accommodating space for accommodating the waterproof film. The utility model can realize reliable waterproof of microphone and reduce the rupture and pollution of waterproof film.
Description
Technical Field
The utility model relates to the technical field of electronic products, in particular to a waterproof microphone and electronic equipment.
Background
The English of MEMS is called Micro-Electro-Mechanical System, chinese is called Micro-electromechanical system, which refers to a high-tech device with a size of a few millimeters or less, and the internal structure of the device is generally in the order of micrometers or nanometers, so that the device is an independent intelligent system. MEMS technology has been widely used in the fields of electronics, medicine, industry, automotive and aerospace systems, etc. because of its advantages of miniaturization, intellectualization, high integration and mass production.
In electronic products, MEMS microphones have become the first choice of middle-high portable intelligent electronic devices, and in order to meet the higher and higher performance requirements of electronic products, the microphones are generally required to have waterproof and dustproof functions, and have the characteristics of high performance, light weight, high reliability and the like in severe environments.
However, the waterproof and dustproof scheme of the existing MEMS microphone is to paste a waterproof film outside the sound hole of the microphone, and the scheme is that the waterproof film is exposed at the bottom of the microphone, so that the waterproof film is easy to crack or pollute foreign matters and other defects in the product transferring or using process, the waterproof function of the product is influenced, and the reliability of the product is greatly reduced.
Disclosure of Invention
In view of the above problems, the present utility model aims to provide a waterproof microphone and a device, so as to solve the problems of easy rupture of a waterproof membrane, influence on the waterproof function of a product, and decrease of the reliability of the product in the existing microphone waterproof scheme.
The utility model provides a waterproof microphone, which comprises a substrate, an acoustic hole arranged on the substrate and a shell which forms a packaging structure with the substrate; a first sunken groove is formed in one side, close to the shell, of the substrate, a waterproof film covering the sound hole is arranged in the first sunken groove, and a separation sheet covering the first sunken groove is arranged on the substrate; the spacer and the substrate form an accommodating space for accommodating the waterproof film.
In addition, the optional structural feature is that a support table arranged around the sound holes is arranged in the first sinking groove; the edge of the waterproof film is stuck and fixed on the upper surface of the supporting table, or the waterproof film is limited at the inner side wall of the supporting table.
Furthermore, an optional feature is that the height of the support table is less than the depth of the first sink.
In addition, the optional structural feature is that the spacer is fixed on the base plate by adhesion, and the spacer is provided with a through hole; the position of the through hole corresponds to the waterproof membrane, and a gap exists between the isolation sheet and the upper surface of the waterproof membrane.
Furthermore, an optional structural feature is that the size of the waterproofing membrane is larger than the size of the sound hole; and the size of the first sinking groove is larger than that of the waterproof film; and the size of the spacing sheet is larger than that of the first sinking groove.
In addition, an optional structural feature is that the microphone further comprises a microphone chip arranged on the spacer; the microphone chip comprises an MEMS chip arranged to cover the through hole and an ASIC chip connected and conducted with the MEMS chip; the ASIC chip is conducted with the substrate through the electrical connection lines.
Furthermore, an optional structural feature is that the sound holes and the through holes are staggered with respect to each other in the direction perpendicular to the waterproofing membrane.
Furthermore, an optional structural feature is that the spacer is a steel or glass sheet.
In addition, an optional structural feature is that a second sink groove is provided on the substrate at a position surrounding the first sink groove; the spacing piece is limited in the second sinking groove.
Corresponding to the waterproof microphone, the utility model also provides electronic equipment comprising the waterproof microphone.
By using the waterproof microphone and the electronic equipment, the first sunk groove is formed in the upper part of the substrate, the waterproof film covering the sound hole is arranged in the first sunk groove, then the isolation sheet covering the first sunk groove is arranged on the substrate, and the accommodating space for accommodating the waterproof film is formed by the isolation sheet and the substrate, so that the waterproof microphone can be protected while the waterproof microphone is waterproof, and defects such as cracking, foreign matters and the like of the waterproof film are prevented.
Drawings
Other objects and attainments together with a more complete understanding of the utility model will become apparent and appreciated by referring to the following description taken in conjunction with the accompanying drawings. In the drawings:
fig. 1 is a schematic structural view of a waterproof microphone according to an embodiment of the present utility model;
fig. 2 is a schematic partial structure of a waterproof microphone according to a first embodiment of the present utility model;
fig. 3 is a schematic partial structure of a waterproof microphone according to a second embodiment of the present utility model.
Wherein reference numerals include: the substrate 1, the sound hole 11, the first sink 12, the second sink 13, the support table 2, the waterproof membrane 3, the spacer 4, the MEMS chip 5, the through hole 6, the housing 7, the ASIC chip 8, and the electrical connection line 9.
The same reference numerals will be used throughout the drawings to refer to similar or corresponding features or functions.
Detailed Description
In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more embodiments. It may be evident, however, that such embodiment(s) may be practiced without these specific details. In other instances, well-known structures and devices are shown in block diagram form in order to facilitate describing one or more embodiments.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.
In order to solve the problems that a waterproof film is easy to crack, the waterproof function of a product is affected, the reliability of the product is reduced and the like in the existing microphone waterproof scheme, the utility model provides a waterproof microphone and electronic equipment.
In order to describe the waterproof microphone and the electronic device in detail, specific embodiments of the present utility model will be described in detail with reference to the accompanying drawings.
Fig. 1 shows a schematic structure of a waterproof microphone according to an embodiment of the present utility model.
As shown in fig. 1, the waterproof microphone according to the present utility model includes: a substrate 1, an acoustic hole 11 provided on the substrate 1, and a housing 7 forming a package structure with the substrate 1; the waterproof membrane 3 covering the sound hole 11 is arranged in the first sinking groove 12, the isolation sheet 4 covering the first sinking groove 12 is arranged on the substrate 1, the isolation sheet 4 and the substrate 1 form an accommodating space for accommodating the waterproof membrane 3, the waterproof membrane 3 is accommodated in the accommodating space and is communicated with the outside through the sound hole 11, and the waterproof membrane 3 is not directly adhered to the outer surface of the sound hole 11, so that risks of breakage or damage and pollution of the waterproof membrane 3 by foreign matters and the like can be effectively reduced in the product using or transferring process.
Wherein, in order to simplify the installation of the waterproof membrane 3, a supporting table 2 arranged around the sound holes 11 can be arranged in the first sinking groove 12; the edge of the waterproof membrane 3 is stuck and fixed on the upper surface of the supporting table 2, or the waterproof membrane 3 is limited at the inner side wall of the supporting table 2. In addition, the waterproof membrane 3 and the support table 2 may be integrally formed to form a waterproof module, and then the waterproof module is directly assembled during the microphone assembling process, for example, the lower end of the support table 2 is adhered and fixed in the first sink 12, so as to improve the uniformity and qualification rate of the waterproof performance.
It is known that the waterproof membrane 3 is deformed to some extent when being impacted by external liquid or gas, so that in order to provide enough deformation space for the waterproof membrane 3, it is necessary to ensure that the height of the support table 2 is smaller than the depth of the first sink 12, or that a certain distance exists between the waterproof membrane 3 and the spacer 4 thereon and the bottom of the sink, and the position of the waterproof membrane 3 can be adjusted by the height of the support table 2.
In addition, in order to lock the position of the spacer 4 and simplify assembly, a second countersink 13 surrounding the first countersink 12 may be provided on the substrate 1, and the spacer 4 is limited in the second countersink 13.
In a specific embodiment of the present utility model, the spacer 4 is adhered and fixed on the substrate 1, the spacer 4 is provided with a through hole 6, the position of the through hole 6 corresponds to the waterproof membrane 3, and a gap exists between the spacer 4 and the upper surface of the waterproof membrane 3, so that the microphone chip on the spacer 4 can transmit sound signals or collect external environment signals through the through hole 6.
Further, the size of the waterproof membrane 3 is larger than that of the sound hole 11, so that the sound hole 11 is fully plugged; the size of the first sinking groove 12 is larger than that of the waterproof membrane 3, so that an accommodating space for the waterproof membrane 3 is formed; and, the size of the spacer 4 is greater than the size of the first sink 12, so as to form a support carrier for supporting the microphone chip, and the size of the specific waterproof membrane 3 can be flexibly set according to the sound hole 11 and the waterproof requirement of the product.
Specifically, the microphone chip is arranged on the upper surface of the isolation sheet 4, and comprises a MEMS chip 5 arranged to cover the through hole 6 and an ASIC chip 8 connected and conducted with the MEMS chip 5; the ASIC chip 8 is electrically connected to the substrate 1 via the electrical connection lines 9, and in the assembly process, the MEMS chip 5 and the ASIC chip 8 may be disposed on the spacer 4, or the MEMS chip 5 may be disposed on the spacer 4, and the ASIC chip 8 may be attached to the substrate 1 if space allows.
In addition, in order to prevent the influence of the air flow hedging on the waterproof membrane 3, the sound holes 11 and the through holes 6 may be distributed in a staggered manner in a direction perpendicular to the waterproof membrane 3.
The spacer 4 may be a steel sheet, a glass sheet, or the like.
Specifically, the structure shown in fig. 2 is a top view structure of the waterproof microphone with the case 7 and the microphone chip removed, and in the first embodiment, since the spacer 4 is made of a steel sheet, the structure below the steel sheet cannot be visually observed, and only the structure below the through hole 6 can be seen, the built-in waterproof film 3 cannot be detected during the assembly of the waterproof film 3.
Therefore, in the second embodiment shown in fig. 3, which is a top view structure of the waterproof microphone with the housing 7 and the microphone chip removed, the spacer 4 is made of a glass sheet, and the quartz glass has a small thermal expansion coefficient, and the maximum continuous operation temperature can reach 1100 ℃ or higher; in addition, the mechanical property is good, the hardness can reach seven Mohs, and the wear resistance is good; the waterproof membrane 3 has good optical performance, can transmit far ultraviolet spectrum and visible light and near infrared spectrum, and is convenient for assembly personnel to carry out optical inspection on the waterproof membrane 3. At this time, the transparent glass sheet is adopted to replace the steel sheet, the state of the inner waterproof film 3 can be clearly observed after the glass sheet is attached, the failure risk of the waterproof film 3 can be identified in advance, the product waterproof performance failure caused by the packaging problem is avoided, and the product waterproof reliability is greatly improved.
Corresponding to the waterproof microphone, the utility model also provides electronic equipment comprising the waterproof microphone.
It should be noted that, the embodiments of the electronic device may refer to the descriptions in the embodiments of the waterproof microphone, and are not described herein in detail.
According to the waterproof microphone and the electronic equipment, the first sunken groove which is sunken downwards is arranged at the upper part of the substrate, the waterproof film which covers the sound hole is arranged in the first sunken groove, then the isolation sheet which covers the first sunken groove is arranged on the substrate, and the accommodating space for accommodating the waterproof film is formed by the isolation sheet and the substrate; further, the spacer can be made of glass sheets, so that the failure risk of the waterproof film can be pre-checked in advance in the waterproof film mounting and glass sheet mounting procedures, the problem that the waterproof film in a non-through hole area cannot be checked is solved, and the waterproof reliability of a product is greatly improved.
The waterproof microphone and the electronic device according to the present utility model are described above by way of example with reference to the accompanying drawings. However, it will be appreciated by those skilled in the art that various modifications may be made to the waterproof microphone and electronic device as set forth above without departing from the spirit of the utility model. Accordingly, the scope of the utility model should be determined from the following claims.
Claims (10)
1. A waterproof microphone comprises a substrate, an acoustic hole arranged on the substrate and a shell which forms a packaging structure with the substrate; it is characterized in that the method comprises the steps of,
a first sunken groove is formed in one side, close to the shell, of the substrate, a waterproof film covering the sound hole is arranged in the first sunken groove, and a separation sheet covering the first sunken groove is arranged on the substrate;
the spacer and the substrate form an accommodating space for accommodating the waterproof film.
2. The waterproof microphone of claim 1, wherein the waterproof microphone comprises a waterproof layer,
a supporting table which is arranged around the sound hole is arranged in the first sinking groove;
the edge of the waterproof film is stuck and fixed on the upper surface of the supporting table, or the waterproof film is limited at the inner side wall of the supporting table.
3. The waterproof microphone of claim 2, wherein the waterproof microphone comprises a waterproof layer,
the height of the supporting table is smaller than the depth of the first sinking groove.
4. The waterproof microphone of claim 1, wherein the waterproof microphone comprises a waterproof layer,
the isolation sheet is stuck and fixed on the substrate, and a through hole is formed in the isolation sheet;
the through holes are positioned corresponding to the waterproof membrane, and a gap exists between the isolating sheet and the upper surface of the waterproof membrane.
5. The waterproof microphone of claim 1, wherein the waterproof microphone comprises a waterproof layer,
the size of the waterproof membrane is larger than the size of the sound hole; and, in addition, the processing unit,
the size of the first sinking groove is larger than that of the waterproof film; and, in addition, the processing unit,
the size of the isolation sheet is larger than that of the first sinking groove.
6. The waterproof microphone of claim 4, further comprising a microphone chip disposed on the spacer; wherein,
the microphone chip comprises an MEMS chip arranged to cover the through hole and an ASIC chip connected and conducted with the MEMS chip;
the ASIC chip is conducted with the substrate through an electrical connection wire.
7. The waterproof microphone of claim 4, wherein the waterproof microphone comprises a waterproof layer,
in the direction perpendicular to the waterproof membrane, the sound holes and the through holes are distributed in a staggered manner.
8. The waterproof microphone of claim 1, wherein the waterproof microphone comprises a waterproof layer,
the isolating sheet is a steel sheet or a glass sheet.
9. The waterproof microphone of claim 1, wherein the waterproof microphone comprises a waterproof layer,
a second sink groove is arranged on the substrate at a position surrounding the first sink groove;
the spacing piece is limited in the second sinking groove.
10. An electronic device comprising a waterproof microphone according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322061678.8U CN220711640U (en) | 2023-08-02 | 2023-08-02 | Waterproof microphone and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322061678.8U CN220711640U (en) | 2023-08-02 | 2023-08-02 | Waterproof microphone and electronic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220711640U true CN220711640U (en) | 2024-04-02 |
Family
ID=90450411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322061678.8U Active CN220711640U (en) | 2023-08-02 | 2023-08-02 | Waterproof microphone and electronic equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220711640U (en) |
-
2023
- 2023-08-02 CN CN202322061678.8U patent/CN220711640U/en active Active
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