CN109710210B - Sound pickup device and electronic apparatus - Google Patents
Sound pickup device and electronic apparatus Download PDFInfo
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- CN109710210B CN109710210B CN201811619016.5A CN201811619016A CN109710210B CN 109710210 B CN109710210 B CN 109710210B CN 201811619016 A CN201811619016 A CN 201811619016A CN 109710210 B CN109710210 B CN 109710210B
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Abstract
The embodiment of the invention relates to the technical field of electronic products, and discloses a sound pickup device and electronic equipment. In an embodiment of the present invention, a sound pickup apparatus includes: the display module comprises a display module, an adhesive coating and a back plate; the display module comprises a display body and a bracket which are integrated with a glass cover plate, and the adhesion coating comprises a charge retention coating which stores negative charges; the display body is positioned in the accommodating space of the bracket, the glass cover plate covers the opening of the accommodating space, the adhesion coating is coated on the non-display area of the glass cover plate and positioned in the accommodating space, the back plate is arranged on the inner wall of the bracket, faces the charge retention coating and has a preset distance with the charge retention coating; the adhesive coating and the back plate are respectively connected with a processing module of the electronic equipment. According to the embodiment of the invention, the shell of the electronic equipment does not need to be perforated for sound conduction, the appearance of the electronic equipment is improved, and the dust resistance of the electronic equipment is enhanced.
Description
Technical Field
The embodiment of the invention relates to the technical field of electronic products, in particular to a sound pickup device and electronic equipment.
Background
Electronic equipment such as mobile phones and tablet computers are widely applied to daily life of people, the electronic equipment provides multiple functions such as voice communication, screen watching and recording for people, the electronic equipment needs to pick up external sounds when realizing the functions, and a microphone is used for realizing the sound pickup function in the conventional electronic equipment. However, the inventors found that at least the following problems exist in the prior art: the microphone is adopted to pick up sound, a plurality of sound outlet holes need to be formed in a shell of the electronic equipment, so that the appearance of the whole electronic equipment is greatly hindered, the appearance of the electronic equipment is influenced, in the using process of the electronic equipment, the condition that the sound outlet holes are blocked by foreign matters (such as dust particles) often occurs, the sound picking up capability of the microphone is seriously influenced, and the dustproof capability is poor.
Disclosure of Invention
An object of embodiments of the present invention is to provide a sound pickup apparatus and an electronic device, so that a casing of the electronic device does not need to be perforated to guide sound, the appearance of the electronic device is improved, and the dust resistance of the electronic device is enhanced.
In order to solve the above technical problem, an embodiment of the present invention provides a sound pickup apparatus including: the display module comprises a display module, an adhesive coating and a back plate; the display module comprises a display body and a bracket which are integrated with a glass cover plate, and the adhesive coating at least comprises a charge retention coating which stores negative charges; the display body is positioned in the accommodating space of the bracket, the glass cover plate covers the opening of the accommodating space, the adhesion coating is coated on the non-display area of the glass cover plate and positioned in the accommodating space, the back plate is arranged on the inner wall of the bracket, and the back plate faces the charge retention coating and has a preset distance with the charge retention coating; the adhesive coating and the back plate are respectively connected to a processing module of the electronic equipment; the glass cover plate is used for generating vibration feedback to outside sound, and the charge resident coating and the back plate are used for converting the vibration feedback into an alternating current voltage signal and outputting the alternating current voltage signal to the processing module.
An embodiment of the present invention also provides an electronic device, including: a processing module, a shell and the sound pickup device; the sound pickup device is arranged on the shell, the adhesion coating and the back electrode plate in the sound pickup device are respectively connected to the processing module, and the charge residence coating is grounded.
Compared with the prior art, the embodiment of the invention provides a sound pickup device, which comprises a display module, an adhesive coating and a back plate, wherein the display module comprises a display body and a bracket which are integrated with a glass cover plate, and the adhesive coating at least comprises a charge retention coating which stores negative charges; the display body is positioned in the accommodating space of the bracket, the glass cover plate covers the opening of the accommodating space, the adhesion coating is coated on the non-display area of the glass cover plate and positioned in the accommodating space, the back plate is arranged on the inner wall of the bracket, faces the charge retention coating and has a preset distance with the charge retention coating; the charge retention coating and the back plate form a capacitor, and the adhesion coating and the back plate are respectively connected with a processing module of the electronic equipment; the glass cover plate is used for generating vibration feedback to external sound, the vibration feedback changes the distance between the charge retention coating and the back plate, and the capacitance formed by the charge retention coating and the back plate changes, as the charge number on the charge retention coating keeps constant, therefore, the change of the capacitance causes the change of the voltage between the charge retention coating and the back plate, so that the charge retention coating and the back plate convert the vibration feedback into an alternating current voltage signal and the alternating current voltage signal is output to the processing module to achieve the purpose of picking up the sound, that is, the present invention utilizes the existing display module in the electronic device, and the present invention replaces the microphone for picking up sound in the prior art, make electronic equipment's casing need not to carry out the trompil and lead the sound, promoted electronic equipment's outward appearance to electronic equipment's dust-resistant ability has been strengthened.
Additionally, the adhesion coating further comprises a conductive coating; the conductive coating is coated on the non-display area of the glass cover plate, and the charge-residing coating is coated on the conductive coating; the conductive coating is connected to the processing module. In this embodiment, the adhesion coating further includes a conductive coating applied to the non-display area of the glass cover plate, and the charge retention coating is applied to the conductive coating, so that the conductive coating can protect the charge retention coating to some extent to avoid charge loss and some unstable factors caused by connecting wires and the like, and improve the conductive effect of the charge retention coating.
In addition, the sound pickup device further comprises an elastic suspension assembly; the elastic suspension assembly is arranged between the glass cover plate and the side wall of the bracket. In this embodiment, set up the elasticity subassembly that hangs between the lateral wall of glass apron and support for become elastic connection by the stiff coupling between the lateral wall of glass apron and support, reduced the limited degree of glass apron vibration, make glass apron more easily by sound wave vibration, improved pickup sensitivity, make the quality of the sound of picking up higher.
In addition, an elastic suspension assembly is disposed between the glass cover plate corresponding to the adhesion coating and the side wall of the bracket. In the embodiment, the elastic wall hanging component is arranged on the corresponding area of the glass cover plate coated with the adhesive coating, so that the pertinence is strong and the space is saved.
Additionally, the resilient suspension assembly includes a plurality of resilient arms; one ends of the elastic arms are respectively connected to the plate edges of the glass cover plate, and the other ends of the elastic arms are respectively connected to the side wall of the support. In this embodiment, a specific structure of the elastic suspension assembly is provided.
In addition, an adhesion coating is located in a bottom sub-area of the non-display area. In the embodiment, the bottom subarea is closer to the mouth of a user when the user makes a call, so that the sound pickup precision is improved; however, the specific position of the adhesion coating in the non-display area is not limited in this embodiment, and the adhesion coating may be disposed according to actual needs, for example, the adhesion coating is located in the side sub-area or the top sub-area of the non-display area.
Drawings
One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the figures in which like reference numerals refer to similar elements and which are not to scale unless otherwise specified.
Fig. 1 is a schematic view of a sound pickup apparatus according to a first embodiment;
fig. 2 is a schematic sectional view of a sound pickup device according to a first embodiment;
fig. 3 is a schematic view of a sound pickup device according to a first embodiment mounted in a housing;
fig. 4 is a schematic diagram of a sound pickup apparatus according to a second embodiment;
fig. 5 is a schematic sectional view of a sound pickup device according to a second embodiment;
fig. 6 is a schematic front view of a sound pickup device according to a third embodiment;
fig. 7 is another schematic front view of a sound pickup apparatus according to a third embodiment;
fig. 8 is a schematic sectional view of a sound pickup device according to a third embodiment;
fig. 9 is a block schematic diagram of an electronic device according to a fourth embodiment;
fig. 10 is a detailed block schematic diagram of an electronic device according to a fourth embodiment;
fig. 11 is a schematic structural diagram of an electronic apparatus according to a fourth embodiment.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, it will be appreciated by those of ordinary skill in the art that numerous technical details are set forth in order to provide a better understanding of the present application in various embodiments of the present invention. However, the technical solution claimed in the present application can be implemented without these technical details and with various changes and modifications based on the following embodiments; the following embodiments are divided for convenience of description, and should not be construed as limiting the specific implementations of the present invention, and the embodiments may be combined with each other and used without contradiction.
A first embodiment of the present invention relates to an audio pickup apparatus, as shown in fig. 1 and 2, the audio pickup apparatus including: the display module, the back plate 1 and the adhesion coating; the display module comprises a display body 3 integrated with a glass cover plate 31 and a bracket 4, and the adhesive coating at least comprises a charge retention coating 21 storing negative charges.
In this embodiment, the display body 3 is located in the accommodating space of the bracket 4, the glass cover plate 31 covers the opening of the accommodating space, the adhesion coating is coated on the non-display area of the glass cover plate 31 and located in the accommodating space, the back plate 1 is arranged on the inner wall of the bracket 4, the back plate 1 faces the charge retention coating 21 and has a preset distance d with the charge retention coating 21, that is, an air gap is formed between the back plate 1 and the charge retention coating 21; the adhesive coating and the back plate 1 are respectively connected with a processing module of the electronic equipment.
In this embodiment, the glass cover plate 31 is configured to generate vibration feedback to external sound, that is, the sound wave induces the glass cover plate 31 to vibrate, and the vibration direction is perpendicular to the glass cover plate to vibrate back and forth, the vibration frequency is consistent with the sound frequency, the charge-retention coating 21 and the back plate 1 are configured to convert the vibration feedback into an ac voltage signal, thereby implementing conversion from the sound signal to an electrical signal, and is configured to output the ac voltage signal to the processing module, and the frequency of the ac voltage signal is consistent with the frequency of the sound wave, and the amplitude of the ac voltage signal is directly proportional to the magnitude of the sound.
Wherein, positive charges are stored on the back plate 1. The thickness of the adhesion coating can be designed according to actual needs.
In the present embodiment, during the sound transmission process, the sound causes the glass cover plate 31 to vibrate, and changes the distance between the charge retention coating 21 and the back plate 1, so that the capacitance formed by the charge retention coating 21 and the back plate 1 changes, and since the charge number Q on the charge retention coating 21 is always constant, it is derived from U ═ Q/C, and Δ U ═ Q/Δ C, that is, the voltage between the charge retention coating 21 and the back plate 1 changes, and finally the voltage is output in the form of an alternating voltage signal.
Compared with the prior art, the embodiment of the invention provides a sound pickup device, which comprises a display module, an adhesive coating and a back plate, wherein the display module comprises a display body and a bracket which are integrated with a glass cover plate, and the adhesive coating at least comprises a charge retention coating which stores negative charges; the display body is positioned in the accommodating space of the bracket, the glass cover plate covers the opening of the accommodating space, the adhesion coating is coated on the non-display area of the glass cover plate and positioned in the accommodating space, the back plate is arranged on the inner wall of the bracket, faces the charge retention coating and has a preset distance with the charge retention coating; the charge retention coating and the back plate form a capacitor, and the adhesion coating and the back plate are respectively connected with a processing module of the electronic equipment; the glass cover plate is used for generating vibration feedback to external sound, the vibration feedback changes the distance between the charge retention coating and the back plate, and the capacitance formed by the charge retention coating and the back plate changes, as the charge number on the charge retention coating keeps constant, therefore, the change of the capacitance causes the change of the voltage between the charge retention coating and the back plate, so that the charge retention coating and the back plate convert the vibration feedback into an alternating current voltage signal and the alternating current voltage signal is output to the processing module to achieve the purpose of picking up the sound, that is, the present invention utilizes the existing display module in the electronic device, and the present invention replaces the microphone for picking up sound in the prior art, the shell of the electronic equipment does not need to be perforated for sound conduction, the appearance of the electronic equipment is improved, and the dust resistance of the electronic equipment is enhanced (the frequency of cleaning the screen by a user is higher).
The following describes the implementation details of the sound pickup device of the present embodiment in detail, and the following is only provided for the convenience of understanding and is not necessary to implement the present embodiment.
In fact, in this embodiment, as shown in fig. 2, the display body 3 further includes a touch layer 32 attached on the glass cover plate 31, and a display screen 33 integrated with the glass cover plate 31, and the touch layer is insulated from the conductive coating.
In this embodiment, the preset distance d between the back plate 1 and the charge-retention coating 21 is greater than or equal to 0.05 mm and less than or equal to 1 mm, and the specific value of the preset distance d is not limited in this embodiment, as long as the purpose of sound pickup can be achieved, and the embodiment of the present invention is within the scope of the present invention.
Preferably, in the present embodiment, as shown in fig. 3, the adhesion coating is located in the bottom sub-area 311 of the non-display area, and since the bottom sub-area 211 is closer to the mouth of the user when the user makes a call, the accuracy of sound pickup is improved; however, the specific position of the adhesion coating in the non-display area is not limited in this embodiment, and the adhesion coating may be set according to actual needs, for example, the adhesion coating is located in the side sub-area or the top sub-area of the non-display area.
A second embodiment of the present invention relates to a sound pickup apparatus. The second embodiment is an improvement on the first embodiment, and the main improvements are as follows: in a second embodiment of the invention, as shown in fig. 4 and 5, the adhesion coating further comprises a conductive coating 22.
In the present embodiment, the conductive coating 22 is coated on the non-display area of the glass cover plate 31, and the charge retention coating 21 is coated on the conductive coating 22; the conductive coating 22 is connected to the process module.
Compared with the first embodiment, the adhesion coating further comprises a conductive coating coated on the non-display area of the glass cover plate, and the charge retention coating is coated on the conductive coating, so that the conductive coating can protect the charge retention coating to a certain extent to avoid charge loss and unstable factors caused by connecting wires and the like, and the conductive effect of the charge retention coating is improved.
A third embodiment of the present invention relates to a sound pickup apparatus. The third embodiment is improved on the basis of the second embodiment, and the main improvement lies in that: in the third embodiment of the present invention, as shown in fig. 6, the sound pickup apparatus further includes an elastic suspension assembly 5.
In the present embodiment, as shown in fig. 6, the elastic suspension unit 5 is provided between the glass cover plate 31 and the side wall of the holder 4.
Preferably, in the present embodiment, as shown in fig. 7 and 8, the elastic suspension assembly 5 is disposed between the glass cover plate 31 corresponding to the adhesion coating and the side wall of the bracket 4; that is, in the present embodiment, the elastic wall hanging component 5 is only disposed on the corresponding region of the glass cover plate 31 coated with the adhesion coating, so that the present embodiment has strong pertinence and saves space.
Optionally, in this embodiment, the elastic suspension assembly 5 further includes an inner connecting edge and an outer connecting edge, and two ends of each elastic arm 51 are respectively connected to the inner connecting edge and the outer connecting edge; when the glass cover plate is installed, the inner connecting edge is connected with the glass cover plate 31, and the outer connecting edge is connected with the side wall of the bracket 4; however, the present embodiment is not limited to this, and the connection manner of the elastic suspension element 5 and the bracket 4 is not limited at all, for example, the outer connecting edge of the elastic suspension element 5 may be integrated with the side wall of the bracket 4.
In one example, as shown in fig. 6 and 7, the resilient suspension assembly 5 includes a plurality of resilient arms 51; one ends of the elastic arms 51 are respectively connected with the plate edge of the glass cover plate 21, and the other ends of the elastic arms 51 are respectively connected with the side wall of the bracket 3; however, the present embodiment provides a specific structure of the elastic suspension assembly 5, and the present embodiment does not limit the shape and number of the elastic arms 51, the distance between the elastic arms 51, the length of the elastic arms 51, and the material of the elastic arms 51, and can be specifically configured according to the actual situation.
In a specific example, the elastic arm 51 is a monocrystalline silicon wafer, a spring, or a spring plate; however, the present embodiment is not limited to this, and the specific structure of the elastic arm 51 is not limited in any way.
In a specific example, as shown in fig. 6 and 7, the elastic arm 51 is an isosceles triangle, the top end of the isosceles triangle is fixed to the edge of the glass cover plate 31, and the bottom end of the isosceles triangle is fixed to the side wall of the bracket 3; in the embodiment, the elastic arm 51 is an isosceles triangle, so that the connection between the glass cover plate 31 and the bracket 4 is more stable, but in practice, the shape of the elastic arm 51 is not limited thereto, and for example, the elastic arm may be a rod, a net, or a spiral.
In fact, the embodiment of the present invention may be a modification of the first embodiment.
Compared with the first embodiment, the elastic suspension assembly is arranged between the glass cover plate and the side wall of the support, so that the hard connection between the glass cover plate and the side wall of the support is changed into elastic connection, the vibration limit degree of the glass cover plate is reduced, the glass cover plate is easily vibrated by sound waves, the pickup sensitivity is improved, and the quality of picked sound is higher.
A fourth embodiment of the present invention relates to an electronic apparatus, as shown in fig. 9, including: processing module 6, housing, and sound pickup device according to any one of the first to third embodiments.
In this embodiment, the sound pickup device is disposed on the housing, the adhesion coating 2 and the back plate 1 in the sound pickup device are respectively connected to the processing module 6, and the charge retention coating 21 is grounded.
In an example, when the electronic device is a mobile phone, the housing is a front housing, but in practice, the electronic device is not limited thereto, and the embodiment does not set any limitation on the housing.
Specifically, in the present embodiment, as shown in fig. 10, the processing module 6 includes a processor 61, a power management chip 62, a signal amplification unit 63, and a codec chip 64. The power management chip 62, the coding and decoding chip 64 and the display body 3 in the sound pickup device are connected to the processor 61; the adhesion coating 2 and the back plate 1 in the sound pickup module are respectively connected to a signal amplification unit 63, the signal amplification unit 63 is further connected to a power management chip 62 and a codec chip 64, and the signal amplification unit 63 is used for impedance matching and amplifying an alternating voltage signal. In this embodiment, a specific structural form of the processing module is provided.
Specifically, as shown in fig. 11, the signal amplifying unit 63 includes a field effect transistor FET 631 and a load impedance 632; the gate of the field effect transistor 631 is connected to the charge retention coating 21 and the back plate 1, and the source of the field effect transistor 631 is grounded; the drain of the field effect transistor 631 is connected to the codec chip 64 and one end of the load impedance 632, and the other end of the load impedance 632 is connected to the power management chip 62; the load impedance 632 is, for example, 2.2 kohm. In the present embodiment, a specific structural form of the signal amplifying unit 63 is provided.
Preferably, the signal amplifying unit 63 further includes a dc blocking capacitor 633; the drain of the field effect transistor 631 is connected to the signal codec chip 64 via a dc blocking capacitor 633. In this embodiment, the dc blocking capacitor 633 is added to prevent the dc signal from passing through as much as possible.
Compared with the prior art, the electronic equipment comprises the sound pickup device provided by the embodiment of the invention, the sound pickup device comprises the adhesion coating, the back plate and the same display module shared with the electronic equipment, the display module comprises a display body integrated with a glass cover plate and a bracket, and the adhesion coating at least comprises a charge retention coating stored with negative charges; the display body is positioned in the accommodating space of the bracket, the glass cover plate covers the opening of the accommodating space, the adhesion coating is coated on the non-display area of the glass cover plate and positioned in the accommodating space, the back plate is arranged on the inner wall of the bracket, faces the charge retention coating and has a preset distance with the charge retention coating; the charge retention coating and the back plate form a capacitor, and the adhesion coating and the back plate are respectively connected with a processing module of the electronic equipment; the glass cover plate is used for generating vibration feedback to external sound, the vibration feedback changes the distance between the charge retention coating and the back plate, and the capacitance formed by the charge retention coating and the back plate changes, as the charge number on the charge retention coating keeps constant, therefore, the change of the capacitance causes the change of the voltage between the charge retention coating and the back plate, so that the charge retention coating and the back plate convert the vibration feedback into an alternating current voltage signal and the alternating current voltage signal is output to the processing module to achieve the purpose of picking up the sound, that is, the present invention utilizes the existing display module in the electronic device, and the present invention replaces the microphone for picking up sound in the existing electronic device, make electronic equipment's casing need not to carry out the trompil and lead the sound, promoted electronic equipment's outward appearance to electronic equipment's dust-resistant ability has been strengthened.
It will be understood by those of ordinary skill in the art that the foregoing embodiments are specific examples for carrying out the invention, and that various changes in form and details may be made therein without departing from the spirit and scope of the invention in practice.
Claims (9)
1. A sound pickup apparatus, characterized by comprising: the display module comprises a display module, an adhesive coating and a back plate; the display module comprises a display body and a bracket which are integrated with a glass cover plate, and the adhesion coating comprises a charge retention coating and a conductive coating which store negative charges;
the display body is positioned in the accommodating space of the bracket, the glass cover plate covers the opening of the accommodating space, the adhesion coating is coated on the non-display area of the glass cover plate and positioned in the accommodating space, the charge retention coating is coated on the non-display area of the glass cover plate, and the conductive coating is coated on the charge retention coating; the back plate is arranged on the inner wall of the bracket, faces the charge retention coating and has a preset distance with the charge retention coating;
the adhesive coating and the back plate are respectively connected to a processing module of the electronic equipment;
the glass cover plate is used for generating vibration feedback to outside sound, and the charge resident coating and the back plate are used for converting the vibration feedback into an alternating current voltage signal and outputting the alternating current voltage signal to the processing module.
2. The sound pickup device as recited in claim 1 further comprising a resilient suspension assembly;
the elastic suspension assembly is arranged between the glass cover plate and the side wall of the bracket.
3. The sound pickup device as claimed in claim 2, wherein an elastic suspension member is provided between the glass cover plate corresponding to the adhesion coating and the side wall of the holder.
4. A sound pickup device as claimed in claim 2 or 3, wherein the resilient suspension assembly comprises a plurality of resilient arms;
one ends of the elastic arms are respectively connected to the plate edges of the glass cover plate, and the other ends of the elastic arms are respectively connected to the side wall of the support.
5. The sound pickup apparatus as claimed in claim 4, wherein the resilient arm is a single crystal silicon wafer, a spring, or a leaf spring.
6. The sound pickup device as recited in claim 1, wherein the adhesive coating is located in a bottom sub-area of the non-display area.
7. The sound pickup device according to claim 1, wherein the preset pitch d satisfies: d is more than or equal to 0.05 mm and less than or equal to 1 mm.
8. The sound pickup device as claimed in claim 1, wherein the display body further comprises a touch layer attached to the glass cover plate, a display screen integrated with the glass cover plate.
9. An electronic device, comprising: a processing module, a housing, a sound pickup device according to any one of claims 1 to 8;
the sound pickup device is disposed on the housing, and the charge retention coating is grounded.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811619016.5A CN109710210B (en) | 2018-12-28 | 2018-12-28 | Sound pickup device and electronic apparatus |
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| CN201811619016.5A CN109710210B (en) | 2018-12-28 | 2018-12-28 | Sound pickup device and electronic apparatus |
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| CN109710210A CN109710210A (en) | 2019-05-03 |
| CN109710210B true CN109710210B (en) | 2022-08-12 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202206540U (en) * | 2011-08-15 | 2012-04-25 | 潍坊东科电讯有限公司 | Microphone back plate with convenience in assembly |
| CN106658318A (en) * | 2017-01-20 | 2017-05-10 | 瑞声科技（南京）有限公司 | Vibration sound production system |
| CN206962880U (en) * | 2017-06-26 | 2018-02-02 | 维沃移动通信有限公司 | A kind of microphone and mobile terminal |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8199959B2 (en) * | 2005-04-22 | 2012-06-12 | Sharp Kabushiki Kaisha | Card-type device and method for manufacturing same |
| CN101076206B (en) * | 2007-06-16 | 2011-12-07 | 郑润远 | Capacity sound-transmitter vibration diaphragm and its capacity sound transmitter |
| KR102650130B1 (en) * | 2016-08-16 | 2024-03-22 | 삼성전자주식회사 | Electronic Device and Method for Controlling Display Using Piezoelectric Element |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202206540U (en) * | 2011-08-15 | 2012-04-25 | 潍坊东科电讯有限公司 | Microphone back plate with convenience in assembly |
| CN106658318A (en) * | 2017-01-20 | 2017-05-10 | 瑞声科技（南京）有限公司 | Vibration sound production system |
| CN206962880U (en) * | 2017-06-26 | 2018-02-02 | 维沃移动通信有限公司 | A kind of microphone and mobile terminal |
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