CN109104654A - A kind of microphone and mobile terminal - Google Patents
A kind of microphone and mobile terminal Download PDFInfo
- Publication number
- CN109104654A CN109104654A CN201810875988.4A CN201810875988A CN109104654A CN 109104654 A CN109104654 A CN 109104654A CN 201810875988 A CN201810875988 A CN 201810875988A CN 109104654 A CN109104654 A CN 109104654A
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- China
- Prior art keywords
- diaphragm
- backplane
- microphone
- circuit board
- printed circuit
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Classifications
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- 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
- H04R1/083—Special constructions of mouthpieces
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/03—Constructional features of telephone transmitters or receivers, e.g. telephone hand-sets
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Telephone Set Structure (AREA)
Abstract
The invention discloses a kind of microphones, it include: the first backplane, the second backplane, primary diaphragm, secondary diaphragm and printed circuit board, first backplane and the primary diaphragm constitute first capacitor structure, second backplane and the secondary diaphragm constitute the second capacitance structure, the amplitude range of the primary diaphragm and the amplitude range of middle low frequency sound signals match, the amplitude range of the secondary diaphragm and the amplitude range of high-frequency sound signal match, and the printed circuit board is electrically connected with the first capacitor structure and second capacitance structure respectively.In addition, invention additionally discloses a kind of mobile terminals.Microphone disclosed by the invention, mobile terminal, low frequency sound signals in being collected by first capacitor structure, by the second capacitance structure collect high-frequency sound signal, can simultaneously to it is low, in and high-frequency sound signal be collected, improve collect high-frequency sound signal effect.
Description
Technical field
The present invention relates to technical field of mobile terminals more particularly to a kind of microphones and mobile terminal.
Background technique
With the fast development of mobile terminal technology, the function that existing mobile terminal has is more and more.In numerous functions
In, mobile terminal becomes function practical in daily life by the various functions that microphone is realized.General microphone
It is diaphragm generation vibration under the action of sound wave, in microphone, so that the capacitance between diaphragm and backplane changes, leads
It causes to generate alternating current in load circuit, corresponding alternating voltage is generated from load circuit, realizes and converts voice signal
For electric signal.When existing microphone exists concurrently with basic, normal, high frequency voice signal, high-frequency sound signal can not be received
Collection, causes the collecting effect of high-frequency sound signal poor.As it can be seen that there are high-frequency sound signal collection effects for existing mobile terminal
Poor problem.
Summary of the invention
In view of this, the present invention proposes a kind of microphone and mobile terminal, to solve the above technical problems.
Firstly, to achieve the above object, the present invention proposes a kind of microphone, comprising:
First backplane, the second backplane, primary diaphragm, secondary diaphragm and printed circuit board, first backplane and described
One diaphragm constitutes first capacitor structure, and second backplane and the secondary diaphragm constitute the second capacitance structure, first film
The amplitude range of piece and the amplitude range of middle low frequency sound signals match, the amplitude range and high-frequency sound of the secondary diaphragm
The amplitude range of signal matches, and the printed circuit board is electric with the first capacitor structure and second capacitance structure respectively
Connection.
Optionally, the distance between the primary diaphragm and first backplane are greater than the secondary diaphragm and described second
The distance between backplane.
Optionally, second capacitance structure is fixed in the first capacitor structure.
Optionally, the printed circuit board includes chip, and the first capacitor structure and second capacitance structure are distinguished
It is connect with the chip.
Optionally, the first capacitor structure is electrically connected by spun gold with the chip, and second capacitance structure passes through
Flexible circuit board is electrically connected with the chip.
Optionally, the pedestal is arranged on the printed circuit board, the first capacitor structure and second capacitor
Structure setting is on the pedestal.
Optionally, first backplane, the first film are set gradually on side of the pedestal far from the printed circuit board
Piece, the second backplane and the secondary diaphragm, the cavity and the first backplane, primary diaphragm, the second backplane and the secondary diaphragm
Relatively.
Optionally, the primary diaphragm or the secondary diaphragm include diaphragm ontology and multiple support constructions, the support
Structure includes support portion and interconnecting piece, and the support portion is connect with the interconnecting piece, and the interconnecting piece and the diaphragm ontology connect
It connects, the support portion is fixed on the pedestal.
Optionally, the microphone further includes dust-proof layer, and the dust-proof layer covers the primary diaphragm and second film
Piece.
Further, to achieve the above object, it the present invention also provides a kind of mobile terminal, including shell and is mounted on described
Microphone in shell, the microphone are above-mentioned microphone.
Compared to the prior art, microphone proposed by the invention, including the first backplane, the second backplane, primary diaphragm,
Two diaphragms and printed circuit board, first backplane and the primary diaphragm constitute first capacitor structure, second backplane and
The secondary diaphragm constitutes the second capacitance structure, the amplitude range of the amplitude range of the primary diaphragm and middle low frequency sound signals
Match, the amplitude range of the secondary diaphragm and the amplitude range of high-frequency sound signal match, the printed circuit board point
It is not electrically connected with the first capacitor structure and second capacitance structure.In this way, in being collected by first capacitor structure
Low frequency sound signals, by the second capacitance structure collect high-frequency sound signal, can simultaneously to it is low, in and high-frequency sound signal into
Row is collected, and the effect for collecting high-frequency sound signal is improved.
Detailed description of the invention
Fig. 1 is the hardware structural diagram for realizing a kind of mobile terminal of each embodiment of the present invention；
Fig. 2 is a kind of communications network system architecture diagram provided in an embodiment of the present invention；
Fig. 3 is a kind of three-dimensional structure diagram of microphone provided in an embodiment of the present invention；
Fig. 4 is a kind of schematic diagram of capacitance structure provided in an embodiment of the present invention；
Fig. 5 is a kind of structure chart of microphone provided in an embodiment of the present invention；
Fig. 6 is a kind of top view of microphone provided in an embodiment of the present invention；
Fig. 7 is the diagrammatic cross-section of the A-A section of microphone shown in Fig. 6 provided in an embodiment of the present invention；
Fig. 8 is the structural schematic diagram of diaphragm provided in an embodiment of the present invention；
Fig. 9 is a kind of left view of microphone provided in an embodiment of the present invention；
Figure 10 is a kind of rearview of microphone provided in an embodiment of the present invention.
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific embodiment
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
In subsequent description, it is only using the suffix for indicating such as " module ", " component " or " unit " of element
Be conducive to explanation of the invention, itself there is no a specific meaning.Therefore, " module ", " component " or " unit " can mix
Ground uses.
Terminal can be implemented in a variety of manners.For example, terminal described in the present invention may include such as mobile phone, plate
Computer, laptop, palm PC, personal digital assistant (Personal Digital Assistant, PDA), portable
Media player (Portable Media Player, PMP), navigation device, wearable device, mobile terminal, pedometer etc. move
The fixed terminals such as dynamic terminal, and number TV, desktop computer.
It will be illustrated by taking mobile terminal as an example in subsequent descriptions, it will be appreciated by those skilled in the art that in addition to special
Except element for moving purpose, the construction of embodiment according to the present invention can also apply to the terminal of fixed type.
Referring to Fig. 1, a kind of hardware structural diagram of its mobile terminal of each embodiment to realize the present invention, the shifting
Dynamic terminal 100 may include: RF (Radio Frequency, radio frequency) unit 101, WiFi module 102, audio output unit
103, A/V (audio/video) input unit 104, sensor 105, display unit 106, user input unit 107, interface unit
108, the components such as memory 109, processor 110 and power supply 111, the number of the processor 110 are at least one.Ability
Field technique personnel are appreciated that mobile terminal structure shown in Fig. 1 does not constitute the restriction to mobile terminal, and mobile terminal can
To include perhaps combining certain components or different component layouts than illustrating more or fewer components.
It is specifically introduced below with reference to all parts of the Fig. 1 to mobile terminal:
Radio frequency unit 101 can be used for receiving and sending messages or communication process in, signal sends and receivees, specifically, by base station
Downlink information receive after, to processor 110 handle；In addition, the data of uplink are sent to base station.In general, radio frequency unit 101
Including but not limited to antenna, at least one amplifier, transceiver, coupler, low-noise amplifier, duplexer etc..In addition, penetrating
Frequency unit 101 can also be communicated with network and other equipment by wireless communication.Any communication can be used in above-mentioned wireless communication
Standard or agreement, including but not limited to GSM (Global System of Mobile communication, global system for mobile telecommunications
System), GPRS (General Packet Radio Service, general packet radio service), CDMA2000 (Code
Division Multiple Access 2000, CDMA 2000), WCDMA (Wideband Code Division
Multiple Access, wideband code division multiple access), TD-SCDMA (Time Division-Synchronous Code
Division Multiple Access, TD SDMA), FDD-LTE (Frequency Division
Duplexing-Long Term Evolution, frequency division duplex long term evolution) and TDD-LTE (Time Division
Duplexing-Long Term Evolution, time division duplex long term evolution) etc..
WiFi belongs to short range wireless transmission technology, and mobile terminal can help user to receive and dispatch electricity by WiFi module 102
Sub- mail, browsing webpage and access streaming video etc., it provides wireless broadband internet access for user.Although Fig. 1 shows
Go out WiFi module 102, but it is understood that, and it is not belonging to must be configured into for mobile terminal, it completely can be according to need
It to omit within the scope of not changing the essence of the invention.
Audio output unit 103 can be in call signal reception pattern, call mode, record mould in mobile terminal 100
When under the isotypes such as formula, speech recognition mode, broadcast reception mode, by radio frequency unit 101 or WiFi module 102 it is received or
The audio data stored in memory 109 is converted into audio signal and exports to be sound.Moreover, audio output unit 103
Audio output relevant to the specific function that mobile terminal 100 executes can also be provided (for example, call signal receives sound, disappears
Breath receives sound etc.).Audio output unit 103 may include loudspeaker, buzzer etc..
A/V input unit 104 is for receiving audio or video signal.A/V input unit 104 may include graphics processor
(Graphics Processing Unit, GPU) 1041 and microphone 1042, graphics processor 1041 is in video acquisition mode
Or the image data of the static images or video obtained in image capture mode by image capture apparatus (such as camera) carries out
Reason.Treated, and picture frame may be displayed on display unit 106.Through graphics processor 1041, treated that picture frame can be deposited
Storage is sent in memory 109 (or other storage mediums) or via radio frequency unit 101 or WiFi module 102.Mike
Wind 1042 can connect in telephone calling model, logging mode, speech recognition mode etc. operational mode via microphone 1042
Quiet down sound (audio data), and can be audio data by such acoustic processing.Audio that treated (voice) data can
To be converted to the format output that can be sent to mobile communication base station via radio frequency unit 101 in the case where telephone calling model.
Microphone 1042 can be implemented various types of noises elimination (or inhibition) algorithms and send and receive sound to eliminate (or inhibition)
The noise generated during frequency signal or interference.
Mobile terminal 100 further includes at least one sensor 105, such as optical sensor, motion sensor and other biographies
Sensor.Specifically, optical sensor includes ambient light sensor and proximity sensor, wherein ambient light sensor can be according to environment
The light and shade of light adjusts the brightness of display panel 1061, and proximity sensor can close when mobile terminal 100 is moved in one's ear
Display panel 1061 and/or backlight.As a kind of motion sensor, accelerometer sensor can detect in all directions (general
For three axis) size of acceleration, it can detect that size and the direction of gravity when static, can be used to identify the application of mobile phone posture
(such as horizontal/vertical screen switching, dependent game, magnetometer pose calibrating), Vibration identification correlation function (such as pedometer, percussion) etc.；
The fingerprint sensor that can also configure as mobile phone, pressure sensor, iris sensor, molecule sensor, gyroscope, barometer,
The other sensors such as hygrometer, thermometer, infrared sensor, details are not described herein.
Display unit 106 is for showing information input by user or being supplied to the information of user.Display unit 106 can wrap
Display panel 1061 is included, liquid crystal display (Liquid Crystal Display, LCD), Organic Light Emitting Diode can be used
Forms such as (Organic Light-Emitting Diode, OLED) configure display panel 1061.Display unit 106 can wrap
Include the first screen area and the second screen area.
User input unit 107 can be used for receiving the number or character information of input, and generate the use with mobile terminal
Family setting and the related key signals input of function control.Specifically, user input unit 107 may include touch panel 1071 with
And other input equipments 1072.Touch panel 1071, also referred to as touch screen collect the touch operation of user on it or nearby
(for example user uses any suitable objects or attachment such as finger, stylus on touch panel 1071 or in touch panel 1071
Neighbouring operation), and corresponding attachment device is driven according to preset formula.Touch panel 1071 may include touch detection
Two parts of device and touch controller.Wherein, the touch orientation of touch detecting apparatus detection user, and detect touch operation band
The signal come, transmits a signal to touch controller；Touch controller receives touch information from touch detecting apparatus, and by it
It is converted into contact coordinate, then gives processor 110, and order that processor 110 is sent can be received and executed.In addition, can
To realize touch panel 1071 using multiple types such as resistance-type, condenser type, infrared ray and surface acoustic waves.In addition to touch panel
1071, user input unit 107 can also include other input equipments 1072.Specifically, other input equipments 1072 can wrap
It includes but is not limited in physical keyboard, function key (such as volume control button, switch key etc.), trace ball, mouse, operating stick etc.
It is one or more, specifically herein without limitation.
Further, touch panel 1071 can cover display panel 1061, when touch panel 1071 detect on it or
After neighbouring touch operation, processor 110 is sent to determine the type of touch event, is followed by subsequent processing device 110 according to touch thing
The type of part provides corresponding visual output on display panel 1061.Although in Fig. 1, touch panel 1071 and display panel
1061 be the function that outputs and inputs of realizing mobile terminal as two independent components, but in certain embodiments, it can
The function that outputs and inputs of mobile terminal is realized so that touch panel 1071 and display panel 1061 is integrated, is not done herein specifically
It limits.
Interface unit 108 be used as at least one external device (ED) connect with mobile terminal 100 can by interface.For example,
External device (ED) may include wired or wireless headphone port, external power supply (or battery charger) port, wired or nothing
Line data port, memory card port, the port for connecting the device with identification module, audio input/output (I/O) end
Mouth, video i/o port, ear port etc..Interface unit 108 can be used for receiving the input from external device (ED) (for example, number
It is believed that breath, electric power etc.) and by least one element that the input received is transferred in mobile terminal 100 or can use
In transmitting data between mobile terminal 100 and external device (ED).
Memory 109 can be used for storing software program and various data.Memory 109 can mainly include storing program area
The storage data area and, wherein storing program area can (such as the sound of application program needed for storage program area, at least one function
Sound playing function, image player function etc.) etc.；Storage data area can store according to mobile phone use created data (such as
Audio data, phone directory etc.) etc..In addition, memory 109 may include high-speed random access memory, it can also include non-easy
The property lost memory, a for example, at least disk memory, flush memory device or other volatile solid-state parts.
Processor 110 is the control centre of mobile terminal, utilizes each of various interfaces and the entire mobile terminal of connection
A part by running or execute the software program and/or module that are stored in memory 109, and calls and is stored in storage
Data in device 109 execute the various functions and processing data of mobile terminal, to carry out integral monitoring to mobile terminal.Place
Managing device 110 may include at least one processing unit；Preferably, processor 110 can integrate application processor and modulation /demodulation processing
Device, wherein the main processing operation system of application processor, user interface and application program etc., modem processor is mainly located
Reason wireless communication.It is understood that above-mentioned modem processor can not also be integrated into processor 110.
Mobile terminal 100 can also include the power supply 111 (such as battery) powered to all parts, it is preferred that power supply 111
Can be logically contiguous by power-supply management system and processor 110, to realize management charging by power-supply management system, put
The functions such as electricity and power managed.
Although Fig. 1 is not shown, mobile terminal 100 can also be including bluetooth module etc., and details are not described herein.
Embodiment to facilitate the understanding of the present invention, the communications network system that mobile terminal of the invention is based below into
Row description.
Referring to Fig. 2, Fig. 2 is a kind of communications network system architecture diagram provided in an embodiment of the present invention, the communication network system
System is the LTE system of universal mobile communications technology, which includes UE (User Equipment, the use of successively communication connection
Family equipment) (the land Evolved UMTS Terrestrial Radio Access Network, evolved UMTS 201, E-UTRAN
Ground wireless access network) 202, EPC (Evolved Packet Core, evolved packet-based core networks) 203 and operator IP operation
204。
Specifically, UE201 can be above-mentioned mobile terminal 100, and details are not described herein again.
E-UTRAN202 includes eNodeB2021 and other eNodeB2022 etc..Wherein, eNodeB2021 can be by returning
Journey (backhaul) (such as X2 interface) is connect with other eNodeB2022, and eNodeB2021 is connected to EPC203,
ENodeB2021 can provide the access of UE201 to EPC203.
EPC203 may include MME (Mobility Management Entity, mobility management entity) 2031, HSS
(Home Subscriber Server, home subscriber server) 2032, other MME2033, SGW (Serving Gate Way,
Gateway) 2034, PGW (PDN Gate Way, grouped data network gateway) 2035 and PCRF (Policy and
Charging Rules Function, policy and rate functional entity) 2036 etc..Wherein, MME2031 be processing UE201 and
The control node of signaling, provides carrying and connection management between EPC203.HSS2032 is all to manage for providing some registers
Such as the function of home location register (not shown) etc, and preserves some related service features, data rates etc. and use
The dedicated information in family.All customer data can be sent by SGW2034, and PGW2035 can provide the IP of UE 201
Address distribution and other functions, PCRF2036 are strategy and the charging control strategic decision-making of business data flow and IP bearing resource
Point, it selects and provides available strategy and charging control decision with charge execution function unit (not shown) for strategy.
IP operation 204 may include internet, Intranet, IMS (IP Multimedia Subsystem, IP multimedia
System) or other IP operations etc..
Although above-mentioned be described by taking LTE system as an example, those skilled in the art should know the present invention is not only
Suitable for LTE system, be readily applicable to other wireless communication systems, such as GSM, CDMA2000, WCDMA, TD-SCDMA with
And the following new network system etc., herein without limitation.
Based on above-mentioned 100 hardware configuration of mobile terminal and communications network system, each embodiment of the present invention is proposed.
It is a kind of structure chart of microphone provided in an embodiment of the present invention refering to Fig. 3, Fig. 3.As shown in figure 3, microphone 300
It include: the first backplane, the second backplane, primary diaphragm, secondary diaphragm and printed circuit board 303, first backplane and described
One diaphragm constitutes first capacitor structure 301, and second backplane and the secondary diaphragm constitute the second capacitance structure 302, described
The amplitude range of primary diaphragm and the amplitude range of middle low frequency sound signals match, the amplitude range and height of the secondary diaphragm
The amplitude range of frequency voice signal matches, the printed circuit board 303 respectively with the first capacitor structure 301 and described
The electrical connection of two capacitance structures 302.
In the present embodiment, the first capacitor structure 301 and second capacitance structure 302 can turn voice signal
It is changed to electric signal, specifically, diaphragm is easily bent, backplane is thicker and porous than relatively thin.When voice signal, that is, sound wave causes air pressure
When variation, diaphragm can be bent with air pressure change, and backplane is remain stationary.Due to diaphragm flexes, can cause backplane and diaphragm it
Between electric capacitance change, so that electric signal can be converted to for the capacitance variations between diaphragm and backplane by drawing.
Referring to Fig. 4, Fig. 4 show the structural schematic diagram of capacitance structure.As shown in figure 4, capacitance structure 400 includes backplane
402 and diaphragm 401.Backplane 402 is thicker and porous, when voice signal, that is, sound wave causes air pressure change, when air flows through backplane, and back
Pole 402 is remain stationary, and diaphragm 401 can be bent with air pressure change, causes the capacitor quantitative change between backplane 402 and diaphragm 401
Change, so that electric signal can be converted to for the capacitance variations between diaphragm 401 and backplane 402 by drawing.First capacitor structure and the second electricity
The structure for holding structure and the structure of capacitance structure 400 shown in Fig. 4 are same or similar, and this will not be repeated here.
In the embodiment shown in fig. 3, due to the amplitude of the amplitude range of the primary diaphragm and middle low frequency sound signals
Range matches, and the amplitude range of the secondary diaphragm and the amplitude range of high-frequency sound signal match, therefore first capacitor knot
Structure collects middle low frequency sound signals, and the second capacitance structure collects high-frequency sound signal.
For example, the peak swing of primary diaphragm can be 0.15 millimeter, and the peak swing of secondary diaphragm can be
0.05 millimeter.
Optionally, the distance between the primary diaphragm and first backplane are greater than the secondary diaphragm and described second
The distance between backplane.
It is understood that the amplitude ratio that the relatively low voice signal of frequency generates diaphragm is larger, frequency is relatively high
Voice signal make diaphragm generate Amplitude Comparison it is small.By reducing the distance between diaphragm and backplane, diaphragm can be made
Amplitude reduce believe so that the capacitance structure that diaphragm and backplane are constituted can detecte the relatively high sound of frequency
Number.It is greater than between the secondary diaphragm and second backplane at a distance from the primary diaphragm is between first backplane
In the case where distance, changed by the sound wave that primary diaphragm can be collected into middle low frequency sound signals, it can be with by secondary diaphragm
It is collected into the sound wave variation of high-frequency sound signal, so that first capacitor structure collects middle low frequency sound signals, the second capacitive junctions
Structure collects high-frequency sound signal.
Optionally, second capacitance structure 302 is fixed in the first capacitor structure 301.
In this way, rational deployment rationally can be carried out to first capacitor structure and the second capacitance structure, space is saved.
Optionally, the printed circuit board 303 includes chip 3031, the first capacitor structure 301 and second electricity
Hold structure 302 to connect with the chip 3031 respectively.
In the present embodiment, chip 3031 can be by first capacitor structure 301 and the capacitance variations of the second capacitance structure 302
It is converted into electric signal.
Referring to Fig. 5, Fig. 5 show the structure chart of microphone provided in an embodiment of the present invention.As shown in figure 5, the first electricity
Hold structure 5021 to be electrically connected with chip 501, the electrical connection of more than 5022 chip 501 of the second capacitance structure, chip 501 and radio-frequency filter
503 electrical connections.The capacitance variations of first capacitor structure 5021 and the second capacitance structure 5022 can be converted into telecommunications by chip 501
Number, and electric signal is filtered by radio-frequency filter 503, the electric signal after filtering processing is inputted into reservoir and place
It manages device and carries out step control processing.
In this way, the capacitance variations of first capacitor structure and the second capacitance structure can will be converted into telecommunications by chip
Number, the collection of centering low frequency sound signals and high-frequency sound signal is completed, the efficiency for collecting voice signal is improved.
Optionally, the first capacitor structure 301 is electrically connected by spun gold with the chip 3031, second capacitive junctions
Structure 302 is electrically connected by flexible circuit board with the chip 3031.
In the present embodiment, the flexible circuit board is that have using polyimides or polyester film as one kind made of substrate
Height reliability, foldable printed circuit board have the characteristics that Distribution density is high, light-weight, thickness is thin, bending is good.It can be with
Understand, the material of spun gold is conductive metal material, such as copper, iron etc..
In this way, spun gold can be selected first capacitor structure and core according to the relative position of first capacitor structure and chip
Piece is electrically connected, according to the relative position of the second capacitance structure and chip, select flexible circuit board by the second capacitance structure with
Chip is electrically connected, and can save space with rational deployment.
Referring to Fig. 6, Fig. 6 show the top view of microphone provided in an embodiment of the present invention.As shown in fig. 6, microphone
600 include chip 601, first capacitor structure 602, spun gold 603, printed circuit board 604, flexible circuit board 605, the first spun gold
606 and second capacitance structure 607.Chip 601 is provided on printed circuit board 604, chip 601 passes sequentially through the first spun gold 606
And flexible circuit board 605 is electrically connected with the second capacitance structure, chip 601 is electrically connected by spun gold 603 with first capacitor structure 602
It connects.
Optionally, the microphone 300 further includes the pedestal equipped with cavity, and the pedestal is arranged in the printed circuit board
On 303, the first capacitor structure 301 and second capacitance structure 302 are arranged on the pedestal.
For example, referring to Fig. 7, Fig. 7 show the diagrammatic cross-section of the cross section A-A of microphone shown in fig. 6.Such as figure
Shown in 7, microphone 600 includes printed circuit board 604, chip 601, pedestal 608, the first backplane 6022, primary diaphragm 6021, the
Two backplanes 6072 and secondary diaphragm 6071.First backplane 6022 constitutes first capacitor structure 602, the second back with primary diaphragm 6021
Pole 6072 and secondary diaphragm 6071 constitute the second capacitance structure 607, and pedestal 608 has cavity 609.
In this way, voice signal can carry out causing into first capacitor structure and the second capacitance structure by the cavity of pedestal
Capacitance variations, according to the corresponding voice signal of electrical signal collection, improve so as to detect electric signal and collect voice signal
Accuracy.
Optionally, set gradually on the side of the pedestal 608 far from the printed circuit board first backplane 6022,
Primary diaphragm 6021, the second backplane 6072 and the secondary diaphragm 6071, the cavity 609 and the first backplane 6022, the first film
Piece 6021, the second backplane 6072 and the secondary diaphragm 6071 are opposite.
In this way, cavity and the first backplane 6022,6071 phase of primary diaphragm 6021, the second backplane 6072 and the secondary diaphragm
It is right, it can accurately cause primary diaphragm to generate amplitude with regard to secondary diaphragm convenient for sound wave, improve the accuracy for collecting voice signal.
Optionally, the primary diaphragm or the secondary diaphragm include diaphragm ontology and multiple support constructions, the support
Structure includes support portion and interconnecting piece, and the support portion is connect with the interconnecting piece, and the interconnecting piece and the diaphragm ontology connect
It connects, the support portion is fixed on the pedestal.
It is understood that multiple support constructions can be uniformly arranged in the edge of diaphragm ontology.In this way, if having list
A support construction damage, will not influence the vibrating effect of diaphragm.
For example, referring to Fig. 8, Fig. 8 is the structural schematic diagram for the diaphragm that the embodiment of the present invention improves.Diaphragm 800 wraps
Diaphragm ontology 801 and multiple support constructions 802 are included, the support construction 802 includes support portion 8022 and interconnecting piece 8021, described
Support portion 8022 is connect with the interconnecting piece 8021, and the interconnecting piece 8021 is connect with the diaphragm ontology 801, the support portion
8022 fixed settings are on the base.
In this way, diaphragm is arranged on the base by support portion, the reliability and physical life of diaphragm can be improved.
Referring to Fig. 9, Fig. 9 show the left view of microphone provided in an embodiment of the present invention.As shown in figure 9, microphone
900 include printed circuit board 901, chip 902, pedestal 903, first capacitor structure 904 and the second capacitance structure 905.Printing electricity
Chip 902 is provided on road plate 901, pedestal 903 is arranged on printed circuit board 901.First capacitor structure 904 is arranged in pedestal
On 903, the second capacitance structure 905 is arranged in first capacitor structure 904.
Referring to Fig. 10, Figure 10 show the rearview of microphone provided in an embodiment of the present invention.As shown in Figure 10, Mike
Wind 1000 includes printed circuit board 1001, chip 1002, pedestal 1003, first capacitor structure 1004 and the second capacitance structure
1005.Chip 1002 is provided on printed circuit board 1001, pedestal 1003 is arranged on printed circuit board 1001.First capacitor knot
Structure 1004 is arranged on pedestal 1003, and the second capacitance structure 1005 is arranged in first capacitor structure 1004.
Optionally, the microphone further includes dust-proof layer, and the dust-proof layer covers the primary diaphragm and second film
Piece.
In this way, can protect primary diaphragm and secondary diaphragm by dust-proof layer, damage of the dust to diaphragm, raising sound are reduced
Sound collecting effect.
In the present embodiment, can by first capacitor structure collect in, low frequency sound signals, pass through the second capacitance structure
Collect high-frequency sound signal, can simultaneously to it is low, in and high-frequency sound signal be collected, improve and collect high-frequency sound signal
Effect.
Referring to Fig. 1, mobile terminal 100 shown in FIG. 1 further includes shell and the Mike that is mounted in the shell
Wind, the microphone are microphone above-mentioned.
Optionally, the mobile terminal 100 may include mobile phone, tablet computer, camera, laptop computer and intelligence wearing
At least one of equipment.
Mobile terminal provided in an embodiment of the present invention includes microphone, the microphone include: the first backplane, the second backplane,
Primary diaphragm, secondary diaphragm and printed circuit board, first backplane and the primary diaphragm constitute first capacitor structure, described
Second backplane and the secondary diaphragm constitute the second capacitance structure, the amplitude range of the primary diaphragm and middle low frequency sound signals
Amplitude range match, the amplitude range of the secondary diaphragm and the amplitude range of high-frequency sound signal match, the print
Printed circuit board is electrically connected with the first capacitor structure and second capacitance structure respectively.In this way, first capacitor can be passed through
Structure collect in, low frequency sound signals, high-frequency sound signal is collected by the second capacitance structure, can simultaneously to it is low, in and it is high
Frequency voice signal is collected, and improves the effect for collecting high-frequency sound signal.
It should be noted that, in this document, the terms "include", "comprise" or its any other variant are intended to non-row
His property includes, so that the process, method, article or the device that include a series of elements not only include those elements, and
And further include other elements that are not explicitly listed, or further include for this process, method, article or device institute it is intrinsic
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including being somebody's turn to do
There is also other identical elements in the process, method of element, article or device.
The serial number of the above embodiments of the invention is only for description, does not represent the advantages or disadvantages of the embodiments.
Through the above description of the embodiments, those skilled in the art can be understood that above-described embodiment side
Method can be realized by means of software and necessary general hardware platform, naturally it is also possible to by hardware, but in many cases
The former is more preferably embodiment.Based on this understanding, technical solution of the present invention substantially in other words does the prior art
The part contributed out can be embodied in the form of software products, which is stored in a storage medium
In (such as ROM/RAM, magnetic disk, CD), including some instructions are used so that a terminal device (can be mobile phone, computer, clothes
Business device, air conditioner or the network equipment etc.) execute method described in each embodiment of the present invention.
The above is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (10)
1. a kind of microphone characterized by comprising
First backplane, the second backplane, primary diaphragm, secondary diaphragm and printed circuit board, first backplane and first film
Piece constitutes first capacitor structure, and second backplane and the secondary diaphragm constitute the second capacitance structure, the primary diaphragm
Amplitude range and the amplitude range of middle low frequency sound signals match, the amplitude range and high-frequency sound signal of the secondary diaphragm
Amplitude range match, the printed circuit board is electrically connected with the first capacitor structure and second capacitance structure respectively
It connects.
2. microphone as described in claim 1, which is characterized in that the distance between the primary diaphragm and first backplane
Greater than the distance between the secondary diaphragm and second backplane.
3. microphone as described in claim 1, which is characterized in that second capacitance structure is fixed at first electricity
Hold in structure.
4. microphone as described in claim 1, which is characterized in that the printed circuit board includes chip, the first capacitor
Structure is connect with the chip respectively with second capacitance structure.
5. microphone as claimed in claim 4, which is characterized in that the first capacitor structure passes through spun gold and chip electricity
Connection, second capacitance structure are electrically connected by flexible circuit board with the chip.
6. microphone as described in claim 1, which is characterized in that further include the pedestal equipped with cavity, the pedestal setting exists
On the printed circuit board, the first capacitor structure and second capacitance structure are arranged on the pedestal.
7. microphone as claimed in claim 6, which is characterized in that on side of the pedestal far from the printed circuit board according to
It is secondary that first backplane, primary diaphragm, the second backplane and the secondary diaphragm, the cavity and the first backplane, the first film are set
Piece, the second backplane and the secondary diaphragm are opposite.
8. microphone as claimed in claim 6, which is characterized in that the primary diaphragm or the secondary diaphragm include diaphragm sheet
Body and multiple support constructions, the support construction include support portion and interconnecting piece, and the support portion is connect with the interconnecting piece, institute
It states interconnecting piece to connect with the diaphragm ontology, the support portion is fixed on the pedestal.
9. microphone as claimed in claim 6, which is characterized in that further include dust-proof layer, the dust-proof layer covers described first
Diaphragm and the secondary diaphragm.
10. a kind of mobile terminal, which is characterized in that including shell and the microphone being mounted in the shell, the microphone
For microphone as claimed in any one of claims 1-9 wherein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810875988.4A CN109104654A (en) | 2018-08-03 | 2018-08-03 | A kind of microphone and mobile terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810875988.4A CN109104654A (en) | 2018-08-03 | 2018-08-03 | A kind of microphone and mobile terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109104654A true CN109104654A (en) | 2018-12-28 |
Family
ID=64848351
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810875988.4A Withdrawn CN109104654A (en) | 2018-08-03 | 2018-08-03 | A kind of microphone and mobile terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109104654A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102792715A (en) * | 2009-08-28 | 2012-11-21 | 美国亚德诺半导体公司 | Dual single-crystal backplate microphone system and method of fabricating same |
| CN102957992A (en) * | 2011-08-15 | 2013-03-06 | 哈曼国际工业有限公司 | Dual backplate microphone |
| CN105050013A (en) * | 2015-07-28 | 2015-11-11 | 瑞声声学科技(深圳)有限公司 | MEMS microphone and work control method of such MEMS microphone |
| CN107872760A (en) * | 2016-09-26 | 2018-04-03 | 思睿逻辑国际半导体有限公司 | MEMS device and method |
-
2018
- 2018-08-03 CN CN201810875988.4A patent/CN109104654A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102792715A (en) * | 2009-08-28 | 2012-11-21 | 美国亚德诺半导体公司 | Dual single-crystal backplate microphone system and method of fabricating same |
| CN102957992A (en) * | 2011-08-15 | 2013-03-06 | 哈曼国际工业有限公司 | Dual backplate microphone |
| CN105050013A (en) * | 2015-07-28 | 2015-11-11 | 瑞声声学科技(深圳)有限公司 | MEMS microphone and work control method of such MEMS microphone |
| CN107872760A (en) * | 2016-09-26 | 2018-04-03 | 思睿逻辑国际半导体有限公司 | MEMS device and method |
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Application publication date: 20181228 |