CN107645899A - Electrostatic protection apparatus and electronic equipment - Google Patents
Electrostatic protection apparatus and electronic equipment Download PDFInfo
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- CN107645899A CN107645899A CN201710775702.0A CN201710775702A CN107645899A CN 107645899 A CN107645899 A CN 107645899A CN 201710775702 A CN201710775702 A CN 201710775702A CN 107645899 A CN107645899 A CN 107645899A
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Abstract
The embodiment of the present application discloses a kind of electrostatic protection apparatus and electronic equipment, and the electrostatic protection apparatus includes front end interface, static leakage circuit and back-end circuit；Static leakage circuit is between front end interface and back-end circuit, and one end of static leakage circuit is connected with front end interface, the connection of the other end and back-end circuit；Static leakage circuit includes RC filter circuits, for being released to the electrostatic induced current that front end interface transmits.The program can increase the electrostatic leakage ability of electronic equipment, reduce infringement and interference of the electrostatic to back-end circuit, effective electrostatic protection is provided for electronic equipment.
Description
Technical field
The application is related to field of terminal technology, and in particular to a kind of electrostatic protection apparatus and electronic equipment.
Background technology
Static discharge (Electro Static Discharge, ESD) is a natural phenomena very common in life, no
Surface may all accumulate a certain amount of electric charge when jljl material contacts with each other, and when running into other objects, there may be up to ten
Several kilovolts of static discharge voltage.Electronic equipment all can suffer from the infringement of this electromagnetic energy.With current microelectronics member device
The extensive use of part, ESD problems are also more paid attention to.
The electronic equipment such as mobile phone, notebook computer, tablet personal computer is all a very accurate electronic equipment at present.Example
Such as, present mobile phone is more and more compact thin, the integrated level of internal electronic component also more and more higher.Used in electronic equipment
Cheng Zhong, static discharge can damage or disturb some circuits such as radio circuit etc. in electronic equipment, influence the normal of electronic equipment
Work.
The content of the invention
The embodiment of the present application provides a kind of electrostatic protection apparatus and electronic equipment, can be provided for electronic equipment effective quiet
Electricity protection.
In a first aspect, the embodiment of the present application provides a kind of electrostatic protection apparatus, including：Front end interface, static leakage circuit
And back-end circuit；
The static leakage circuit between the front end interface and the back-end circuit, the static leakage circuit
One end is connected with the front end interface, the other end is connected with the back-end circuit；
The static leakage circuit includes the static leakage circuit being made up of RC filter circuits, for the front end interface
The electrostatic induced current of transmission is released.
Second aspect, the embodiment of the present application additionally provide a kind of radio circuit, including RF transceiver, radio frequency switching circuit
Chip, antenna and static leakage circuit；The RF transceiver, radio frequency switching circuit chip, static leakage circuit and day
Line is sequentially connected；The static leakage circuit includes RC filter circuits, and the electrostatic induced current for being transmitted to the front end interface enters
Row is released.
The third aspect, the embodiment of the present application additionally provide a kind of electronic equipment, including screen, housing and electrostatic protection dress
Put, the screen and the electrostatic protection apparatus are arranged on the enclosure interior, and the electrostatic protection apparatus is that the application is real
The electrostatic protection apparatus of any offer of example is provided.
The embodiment of the present application can be by being carried out by the static leakage circuit that RC filter circuits form to the electric current in transmission
Electrostatic leakage, the electrostatic leakage ability of electronic equipment can be increased, reduce infringement and interference of the electrostatic to back-end circuit, for electricity
Sub- equipment provides effective electrostatic protection, improves the stability of electronic equipment.
Brief description of the drawings
In order to illustrate more clearly of the technical scheme in the embodiment of the present application, make required in being described below to embodiment
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present application, for
For those skilled in the art, on the premise of not paying creative work, it can also be obtained according to these accompanying drawings other attached
Figure.
Fig. 1 is the structural representation for a kind of electronic equipment that the embodiment of the present application provides.
Fig. 2 is the structural representation for another electronic equipment that the embodiment of the present application provides.
Fig. 3 is the structural representation for another electronic equipment that the embodiment of the present application provides.
Fig. 4 is the structural representation for another electronic equipment that the embodiment of the present application provides.
Fig. 5 is the first structural representation for the electrostatic protection apparatus that the embodiment of the present application provides.
Fig. 6 is second of structural representation of the electrostatic protection apparatus that the embodiment of the present application provides.
Fig. 7 is the third structural representation for the electrostatic protection apparatus that the embodiment of the present application provides.
Fig. 8 is the 4th kind of structural representation of the electrostatic protection apparatus that the embodiment of the present application provides.
Fig. 9 is the 5th kind of structural representation of the electrostatic protection apparatus that the embodiment of the present application provides.
Figure 10 is the first structural representation for the radio circuit that the embodiment of the present application provides.
Figure 11 is second of structural representation of the radio circuit that the embodiment of the present application provides.
Figure 12 is the structural representation for another electronic equipment that the embodiment of the present application provides.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present application, the technical scheme in the embodiment of the present application is carried out clear, complete
Site preparation describes.Obviously, described embodiment is only some embodiments of the present application, rather than whole embodiments.It is based on
Embodiment in the application, the every other implementation that those skilled in the art are obtained under the premise of creative work is not made
Example, belong to the scope of the application protection.
In the description of the present application, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer ", " up time
The orientation or position relationship of the instruction such as pin ", " counterclockwise " are based on orientation shown in the drawings or position relationship, are for only for ease of
Describe the application and simplify to describe, rather than indicate or imply that signified device or element must have specific orientation, Yi Te
Fixed azimuth configuration and operation, therefore it is not intended that limitation to the application.In addition, term " first ", " second " are only used for
Purpose is described, and it is not intended that instruction or hint relative importance or the implicit quantity for indicating indicated technical characteristic.
Thus, " first " is defined, the feature of " second " can be expressed or implicitly includes one or more feature.
In the description of the present application, " multiple " are meant that two or more, unless otherwise specifically defined.
, it is necessary to illustrate in the description of the present application, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
To be mechanical connection or electrical connection or can mutually communicate；Can be joined directly together, can also be by between intermediary
Connect connected, can be connection or the interaction relationship of two elements of two element internals.For the ordinary skill of this area
For personnel, the concrete meaning of above-mentioned term in this application can be understood as the case may be.
In this application, unless otherwise clearly defined and limited, fisrt feature second feature it " on " or it " under "
Can directly it be contacted including the first and second features, it is not directly to contact but pass through it that can also include the first and second features
Between other characterisation contact.Moreover, fisrt feature second feature " on ", " top " and " above " to include first special
Sign is directly over second feature and oblique upper, or is merely representative of fisrt feature level height and is higher than second feature.Fisrt feature exists
Second feature " under ", " lower section " and " following " fisrt feature that includes are immediately below second feature and obliquely downward, or be merely representative of
Fisrt feature level height is less than second feature.
Following disclosure provides many different embodiments or example is used for realizing the different structure of the application.In order to
Simplify disclosure herein, hereinafter the part and setting of specific examples are described.Certainly, they are only example, and
And purpose does not lie in limitation the application.In addition, the application can in different examples repeat reference numerals and/or reference letter,
This repetition is for purposes of simplicity and clarity, between itself not indicating discussed various embodiments and/or setting
Relation.In addition, this application provides various specific techniques and material examples, but those of ordinary skill in the art can be with
Recognize the application of other techniques and/or the use of other materials.
The embodiment of the present application provides a kind of electronic equipment.The electronic equipment can be the equipment such as smart mobile phone, tablet personal computer.
With reference to figure 1, electronic equipment 100 includes cover plate 101, display screen 102, circuit board 103 and housing 104.
Wherein, cover plate 101 is installed on display screen 102, to cover display screen 102.Cover plate 101 can be transparent glass cover
Plate.In certain embodiments, cover plate 101 can be with glass cover-plates made of material such as sapphires.
Display screen 102 is arranged on housing 104, to form the display surface of electronic equipment 100.Display screen 102 can include
Viewing area 102A, non-display area 102B and non-display area 102C.Viewing area 102A is used for display image, text etc.
Information.Non-display area 102B not display informations.Non-display area 102B bottom can set fingerprint module, touch-control circuit etc.
Functional unit.Non-display area 102C bottom can set the devices such as light proximity transducer, front camera, receiver.
Circuit board 103 is arranged on inside housing 104.Circuit board 103 can be the mainboard of electronic equipment 100.Circuit board 103
On can be integrated with the functional units such as camera, light proximity transducer and processor.Meanwhile display screen 102 can electrically connect
To circuit board 103.For example the position corresponding with non-display area 102C of circuit board 103 is integrated with camera, light proximity transducer
Deng.
In certain embodiments, radio frequency (RF, Radio Frequency) circuit is provided with circuit board 103.Radio circuit
Wireless network and the network equipment (for example, server, base station etc.) or other electronic equipments (for example, smart mobile phone etc.) can be passed through
Communication, with the information transmit-receive completed and between the network equipment or other electronic equipments.
In certain embodiments, as shown in Fig. 2 the electronic equipment also comprising rear camera 105, flash lamp 106 and
Antenna 107.Wherein, the camera 105 can be single camera, such as respectively 16,000,000 pixel wide-angle cameras or 2000
Ten thousand pixel focal length cameras.Can be with shooting image by the electronic equipment of camera 105.In certain embodiments, this rearmounted is taken the photograph
As first 105 can also be dual camera, such as wide-angle camera and focal length camera.
Wherein, antenna 107 can be connected with the radio circuit on circuit board 103, for transceiving radio frequency signal.
In certain embodiments, as shown in figure 3, the electronic equipment also includes：Neck 108, the screen locking button 109 of SIM card
Etc..Neck 108 is used to place SIM card, and is electrically connected by the shell fragment in neck 108 with circuit board 103；The neck 108
It is arranged on screen locking button 109 in housing 104.Screen locking button 109 be used for realize that display screen 102 is locked and unlocked, such as, when with
When screen locking button 109 is pressed at family, the locking of display screen 102 is extinguished.
In certain embodiments, as shown in figure 4, the electronic equipment also includes：Be additionally arranged at usb 1 10 in housing,
COBBAIF 111, the first volume adjusting key 112 and the second volume adjusting key 113.
In certain embodiments, with reference to figure 5 to Fig. 7, Fig. 5 is a kind of electrostatic protection apparatus that the embodiment of the present application provides
200 structural representation, the electrostatic protection apparatus 200 include：Front end interface 210, static leakage circuit 220 and rear end electricity
Road 230.
Wherein, static leakage circuit 220 is between front end interface 210 and back-end circuit 220, static leakage circuit 220
One end be connected with front end interface 210, the other end and back-end circuit 230 connect.
With reference to figure 6, static leakage circuit 220 is made up of RC filter circuits, for the electrostatic electricity transmitted to front end interface 210
Stream is released.
Wherein, front end interface 210 is the interface device that electrostatic is introduced on electronic equipment, such as, front end interface 210 can wrap
Include：Antenna 107, usb 1 10, COBBAIF 111, the first volume adjusting key 112, the second volume adjusting key 113, neck 108
Shell fragment, screen locking key 109, camera 105 etc..
Back-end circuit 230 is to need by the circuit of electrostatic protection, such as, rf processing circuitry, display driving can be included
Circuit, finger prints processing circuit etc., the back-end circuit 230 can also include needing by element of electrostatic protection etc..
The static leakage circuit 220 can include being serially connected by some electric capacity 221A and resistance 221B, in parallel or string
The RC filter circuits 221 composed in parallel, wherein, RC filter circuits 221 can use single order or multistage RC filter circuits 221, with
Electrostatic induced current is discharged or released.
In certain embodiments, at least one RC filter circuits 221, the RC are included with reference to figure 7, static leakage circuit 220
Filter circuit 221 includes electric capacity 221A and resistance 221B, wherein：Resistance 221B be connected serially to the front end interface 210 with it is described after
Between terminal circuit 230；Electric capacity 221A one end is connected between the resistance 221B and the back end interface, the electric capacity 221A's
The other end is grounded.
In order to which electrostatic induced current caused by electrostatic interference is filtered, and retain operating current, the filtering of static leakage circuit 220
Frequency range does not include the working frequency range of the back-end circuit 230.Moreover, in order to ensure to filter out the effect of electrostatic induced current, electrostatic leakage
The filtering frequency range of circuit 220 need to be in the frequency range of caused electrostatic induced current.
It should be understood that the RC filter circuits 221 employed in the application, except Fig. 6 used by single order RC filtered electricals
Beyond road 221, it can also be serially connected using other by some electric capacity 221A and resistance 221B, in parallel or connection in series-parallel forms
Single order or multistage RC filter circuits 221, to meet the electrostatic leakage demand in different circuits.
Electrostatic protection apparatus 200 shown in Fig. 7 can be by the RC filter circuits 221 in static leakage circuit 220 by before
The electrostatic induced current that end interface 210 transmits is released, and prevents impact and interference of the electrostatic induced current to back-end circuit 230, Ke Yiwei
Electronic equipment provides effective electrostatic protection so that the stability of electronic equipment is stronger.In addition, made using RC filter circuits 221
For static leakage circuit 220, simple in construction, cost of implementation is relatively low.
In certain embodiments, Transient Suppression Diode 222 is also included with reference to figure 8, static leakage circuit 220.Transient state presses down
Diode 222 (Transient Voltage Suppressor, TVS) processed is a kind of high-effect protector of diode
Part.When the two poles of the earth of TVS diode are by reverse transient state high energy impact events, it can with the speed of 10 minus 12 power second-time,
The high impedance of its two interpolar is changed into Low ESR, up to thousands of watts of surge power is absorbed, makes the voltage clamp of two interpolars in one
Individual predetermined value, the precision components in electronic circuit are effectively protected, from the damage of various surge pulses.The embodiment of the present application
In extremely low-impedance characteristic can be presented under instant high-voltage using TVS pipe electrostatic pulse electric current is released, reach guarantor
The infringement that shield back-end circuit 230 is impacted from instantaneous large-current.In certain embodiments, Transient Suppression Diode can be bipolar
Type Transient Suppression Diode.
In fig. 8, one end of Transient Suppression Diode 222 simultaneously with the front end interface 210, the RC filter circuits
221 connections, the other end ground connection of the Transient Suppression Diode 222.Specifically, the one end of Transient Suppression Diode 222 simultaneously with
Resistance 221B and electric capacity 221A connections in RC filter circuits 221, the electrostatic induced current that front end interface 210 transmits is let out
Put.
Equally, in order to which electrostatic induced current caused by electrostatic interference is filtered, and operating current, static leakage circuit 220 are retained
Filtering frequency range do not include the back-end circuit 230 working frequency range.Moreover, in order to ensure to filter out the effect of electrostatic induced current, it is quiet
The filtering frequency range of electric leadage circuit 220 need to be in the frequency range of caused electrostatic induced current.
Transmitted by front end interface 210 to the electrostatic induced current of back-end circuit 230, the electrostatic exported from front end interface 210
Electric current can first pass through the Transient Suppression Diode 222 of ground connection, and now, Transient Suppression Diode 222 is released to electrostatic induced current,
Residual statics electric current is obtained, and residual statics electric current is transferred to RC filter circuits 221.Then, RC filter circuits 221 can be to surplus
Remaining electrostatic induced current is released again, so as to which after electrostatic induced current twice is released, back-end circuit 230 can obtain electrostatic electricity
Flow less operating current.
Electrostatic protection apparatus shown in Fig. 8 can by the Transient Suppression Diode 222 in static leakage circuit 220 and
RC filter circuits 221, by electrostatic induced current that front end interface 210 transmits carry out it is secondary release, prevent electrostatic induced current to back-end circuit
230 impact and interference, effective electrostatic protection can be provided for electronic equipment, further such that the stability of electronic equipment is more
By force.
In certain embodiments, with reference to figure 9, one end of Transient Suppression Diode 222 simultaneously with RC filter circuits 221, after
Terminal circuit 230 connects, the other end ground connection of Transient Suppression Diode 222.Specifically, the one end of Transient Suppression Diode 222 connects
Between resistance 221B into back-end circuit 230 and RC filter circuits 221, electrostatic induced current that front end interface 210 is transmitted
Released.
Equally, in order to which electrostatic induced current caused by electrostatic interference is filtered, and operating current, static leakage circuit 220 are retained
Filtering frequency range do not include the back-end circuit 230 working frequency range.Moreover, in order to ensure to filter out the effect of electrostatic induced current, it is quiet
The filtering frequency range of electric leadage circuit 220 need to be in the frequency range of caused electrostatic induced current.
Transmitted by front end interface 210 to the electrostatic induced current of back-end circuit 230, the electrostatic exported from front end interface 210
Electric current can first pass through the RC filter circuits 221 of ground connection, and now, RC filter circuits 221 are released to electrostatic induced current, obtain residue
Electrostatic induced current, and residual statics electric current is transferred to Transient Suppression Diode 222.Then, Transient Suppression Diode 222 can be to surplus
Remaining electrostatic induced current is released again, so as to which after electrostatic induced current twice is released, back-end circuit 230 can obtain electrostatic electricity
Flow less operating current.
Electrostatic protection apparatus shown in Fig. 9 can by the Transient Suppression Diode 222 in static leakage circuit 220 and
RC filter circuits 221, by electrostatic induced current that front end interface 210 transmits carry out it is secondary release, prevent electrostatic induced current to back-end circuit
230 impact and interference, effective electrostatic protection can be provided for electronic equipment, further such that the stability of electronic equipment is more
By force.
In one embodiment, as shown in Figure 10, radio circuit 300 includes RF transceiver 31, power amplification unit 32, filter
Ripple unit 33, radio frequency switching circuit chip 34, static leakage circuit 220 and antenna 35.Wherein, power amplification unit 33, filter
Ripple unit 33, radio frequency switching circuit chip 34, static leakage circuit 220 and antenna 35 are sequentially connected.Wherein, before antenna 35 is
End interface；Either circuit in RF transceiver 31, power amplification unit 32, filter unit 33 and radio frequency switching circuit chip 34
Or unit can be back-end circuit.
RF transceiver 31 has emission port TX and receiving port RX.Emission port TX be used for launch radiofrequency signal (
Row signal), receiving port RX is used to receive radiofrequency signal (downstream signal).Emission port TX and the power of RF transceiver 31 are put
Big unit 33 is connected, and receiving port RX is connected with filter unit 33.
Power amplification unit 33 is used to be amplified the upward signal that RF transceiver 31 is launched, and will be upper after amplification
Row signal is sent to filter unit 33.
Filter unit 33 is used to be filtered the upward signal that RF transceiver 31 is launched, and by filtered up letter
Number it is sent to antenna 35.Filter unit 33 be additionally operable to antenna 35 receive downstream signal be filtered, and will be filtered under
Row signal is sent to RF transceiver 31.
Radio frequency switching circuit chip 34 is used for the communications band being selectively turned between RF transceiver 31 and antenna 35.Penetrate
The detailed construction and function of frequency circuit switch chip 34 will hereinafter be described.
Antenna 35 is used to the upward signal that RF transceiver 31 is sent being transmitted into the external world, or receives radio frequency letter from the external world
Number, and the downstream signal received is sent to RF transceiver 31.
Static leakage circuit 220 includes at least one RC filter circuits, and the RC filter circuits include electric capacity and resistance, the electricity
Resistance is connected serially between radio frequency switching circuit chip 34 and antenna 35, and the electrostatic induced current for being transmitted to the front end interface is let out
Put.
In order to which electrostatic induced current caused by electrostatic interference is filtered, and retain operating current, the filtering of static leakage circuit 220
Frequency range does not include the working frequency range of the back-end circuit, i.e. radio frequency switching circuit chip 34, RF transceiver 31, power amplification list
Member 32, the working frequency range of filter unit 33.Moreover, in order to ensure to filter out the effect of electrostatic induced current, the filter of static leakage circuit 220
Wave frequency section need to be in the frequency range of caused electrostatic induced current.
In addition to the single order RC filter circuits of use, can also mutually it be gone here and there by some electric capacity and resistance using other
Connection, the single order of in parallel or connection in series-parallel composition or multistage RC filter circuits, to meet the electrostatic leakage demand in different circuits.
In one embodiment, with reference to figure 11, Figure 11 is the structural representation of radio circuit 300.Wherein, RF transceiver 31
Including 9 radio-frequency transmissions ports a1, a2, a3, a4, a5, a6, a7, a8, a9, and 9 radio frequency reception port b1, b2, b3, b4,
b5、b6、b7、b8、b9。
Wherein, a1, a2, a3 are high-frequency emission port, for launch high frequency radio signals (for example, band7, band40,
The radiofrequency signal of the frequency ranges such as band41).B1, b2, b3 are high-frequency reception port, for receiving high frequency radio signals.a4、a5、a6
For intermediate frequency emission port, for emission medium-frequency radiofrequency signal (for example, radiofrequency signal of the frequency range such as band1, band2, band3).
B4, b5, b6 are medium frequency reception port, for receiving intermediate frequency radiofrequency signal.A7, a8, a9 are low frequencies port, low for launching
Frequency radiofrequency signal (for example, radiofrequency signal of the frequency range such as band8, band12, band20).B7, b8, b9 are low frequency reception port,
For receiving low frequency radio frequency signal.
It should be noted that above-described embodiment is only with the high frequency port of RF transceiver 31, intermediate frequency port, low frequency port point
It Bao Kuo not illustrated exemplified by 3 radio-frequency transmissions ports and 3 radio frequency reception ports.In some other embodiment, front end
Mouth, intermediate frequency port, low frequency port can also include the radio-frequency transmissions port and radio frequency reception port of other quantity respectively.It need to only expire
Each included radio-frequency transmissions port is identical with the quantity of radio frequency reception port for sufficient high frequency port, intermediate frequency port, low frequency port
And more than 1.
Power amplification unit 32 includes 9 amplifiers 321,322,323,324,325,326,327,328,329.Wherein,
Amplifier 321,322,323,324,325,326,327,328,329 respectively the radio-frequency transmissions port a1 with RF transceiver 31,
A2, a3, a4, a5, a6, a7, a8, a9 are connected.
Filter unit 33 includes 9 duplexers 331,332,333,334,335,336,337,338,339.Wherein, it is duplexing
Device 331,332,333,334,335,336,337,338,339 respectively with amplifier 221,222,223,224,225,226,227,
228th, 229 connection.Also, duplexer 321,322,323,324,325,326,327,328,329 respectively with RF transceiver 31
Radio frequency reception port b1, b2, b3, b4, b5, b6, b7, b8, b9 connection.
Radio frequency switching circuit chip 34 includes first switch 341, the switch of second switch the 342, the 3rd 343, switch module 246
And first combiner 344, the second combiner 345.
Wherein, first switch 341, the output end of second switch 342 are connected to switch module 346.3rd switch 343 it is defeated
Go out the first input end that end is connected to the second combiner 345.
First switch 341, the switch of second switch the 342, the 3rd 343 are single pole multiple throw.For example, first switch 341
Including 3 sub- input port c1, c2, c3, second switch 342 includes 3 sub- input port c4, c5, c6, the bag of the 3rd switch 343
Include 3 sub- input port c7, c8, c9.Wherein, sub- input port c1, c2, c3, c4, c5, c6, c7, c8, c9 respectively with duplexer
331st, 332,333,334,335,336,337,338,339 connection.
Switch module 346 has 3 inputs P1, P2, P3 and 3 output ends Q1, Q2, Q3.Wherein, input P1 with
The output end connection of switch 341.Input P2 is connected with the output end of switch 342.Input P3 is defeated with the first combiner 344
Go out end connection.Output end Q1 is connected with the first input end of combiner 344.Output end Q2 and combiner 344 the second input
Connection.Output end Q3 is connected with the second input of the second combiner 345.
Wherein, the first combiner 344, the second combiner 345 are all dual-frequency channel merger.The output end of second combiner 345
It is connected to antenna 35.
The RC filter circuits 221 include electric capacity and resistance, the resistant series to radio frequency switching circuit chip 34 and antenna 35
Between, the electrostatic induced current for being transmitted to the antenna 35 is released.
Wherein, resistance 221B is connected serially between antenna 35 and radio frequency switching circuit chip 34；Electric capacity 221A one end connects
It is connected between the resistance 221B and the radio frequency switching circuit chip 34, electric capacity 221A other end ground connection.
In addition to the single order RC filter circuits 221 of use, other can also be used mutual by some electric capacity and resistance
The single order or multistage RC filter circuits 221 of series, parallel or connection in series-parallel composition, to meet the electrostatic leakage need in different circuits
Ask.
In order to which electrostatic induced current caused by electrostatic interference is filtered, and retain operating current, the filtering of static leakage circuit 220
Frequency range does not include the working frequency range of the back-end circuit, i.e. radio frequency switching circuit chip 34, RF transceiver 31, power amplification list
Member 32, the working frequency range of filter unit 33.Moreover, in order to ensure to filter out the effect of electrostatic induced current, the filter of static leakage circuit 220
Wave frequency section need to be in the frequency range of caused electrostatic induced current.
The radio circuit 300 can be transmitted antenna 35 by the RC filter circuits 221 in static leakage circuit 220 quiet
Electric current is released, and prevents electrostatic induced current to back-end circuit, i.e. radio frequency switching circuit chip 34, RF transceiver 31, power
The impact and interference of amplifying unit 32, filter unit 33, effective electrostatic protection can be provided for electronic equipment so that electronics is set
Standby stability is stronger, so as to protect the normal work of back-end circuit.
Radio circuit 300 in the embodiment of the present application can be released and suppressed to electrostatic pulse electric current, enhance electricity
The electrostatic leakage and rejection ability of sub- equipment, impact and interference of the electrostatic induced current to radio circuit can be prevented, can be electronics
Equipment provides effective electrostatic protection so that the stability of electronic equipment is stronger.
The embodiment of the present application also provides a kind of electronic equipment, including screen, housing and electrostatic protection apparatus, screen and
Electrostatic protection apparatus is arranged on enclosure interior, and electrostatic protection apparatus is the electrostatic protection apparatus of any offer of the embodiment of the present application
200。
With reference to figure 12, Figure 12 is the another structural representation for the electronic equipment 100 that the embodiment of the present application provides.Electronic equipment
100 include antenna assembly 10, memory 20, display unit 30, power supply 40, processor 50 and sensor assembly 60.This area
Technical staff is appreciated that the structure of the electronic equipment 100 shown in Figure 10 does not form the restriction to electronic equipment 100.Electricity
Sub- equipment 100 can be included than illustrating more or less parts, either combine some parts or different parts arrangement.
Wherein, antenna assembly 10 can pass through wireless network and the network equipment (for example, server) or other electronic equipments
(for example, smart mobile phone) communicates, completion and the information transmit-receive between the network equipment or other electronic equipments.Wherein, antenna assembly
10 can include the electrostatic protection apparatus 200 of any offer of the embodiment of the present application.
Memory 20 can be used for storage application program and data.Include in the application program that memory 20 stores executable
Program code.Application program can form various functions module.Processor 50 is stored in the application journey of memory 20 by operation
Sequence, so as to perform various function application and data processing.
Display unit 30 can be used for display by user is input to the information of electronic equipment 100 or is supplied to user information with
And the various graphical user interface of electronic equipment 100.These graphical user interface can by figure, text, icon, video and its
It is combined to form.Display unit 30 may include display panel.
The all parts that power supply 40 is used for electron equipment 100 are powered.In certain embodiments, power supply 40 can pass through electricity
Management system and processor 50 are logically contiguous, so as to realize management charging, electric discharge and power consumption pipe by power-supply management system
The functions such as reason.
Processor 50 is the control centre of electronic equipment 100.Processor 50 is entirely electric using various interfaces and connection
The various pieces of sub- equipment 100, by running or performing the application program being stored in memory 20, and call and be stored in
Data in reservoir 20, the various functions and processing data of electronic equipment 100 are performed, so as to carry out entirety to electronic equipment 100
Monitoring.
Sensor assembly 60 is used to sense outer signals, such as optical signal, sensor 60 can include light proximity transducer,
Ambient light sensor etc..
In addition, electronic equipment 100 can also include camera module, bluetooth module etc., will not be repeated here.
It when it is implemented, above modules can be realized as independent entity, can also be combined, be made
Realized for same or several entities, the specific implementation of above modules can be found in embodiment of the method above, herein not
Repeat again.
A kind of electrostatic protection apparatus and electronic equipment provided above the embodiment of the present application is described in detail, and its is each
Functional module can be integrated in a process chip or modules are individually physically present, can also be two or two
It is individual to be integrated in upper module in a module.Above-mentioned integrated module can both be realized in the form of hardware, can also use
The form of software function module is realized.Specific case used herein is explained the principle and embodiment of the application
State, the explanation of above example is only intended to help and understands the present processes and its core concept；Meanwhile for this area
Technical staff, according to the thought of the application, there will be changes in specific embodiments and applications, in summary,
This specification content should not be construed as the limitation to the application.
Claims (11)
- A kind of 1. electrostatic protection apparatus, it is characterised in that including：Front end interface, static leakage circuit and back-end circuit；The static leakage circuit is between the front end interface and the back-end circuit, one end of the static leakage circuit It is connected with the front end interface, the other end is connected with the back-end circuit；The static leakage circuit includes RC filter circuits, and the electrostatic induced current for being transmitted to the front end interface is released.
- 2. electrostatic protection apparatus as claimed in claim 1, it is characterised in that the static leakage circuit includes at least one RC Filter circuit, the RC filter circuits include electric capacity and resistance, wherein：The resistant series are between the front end interface and the back-end circuit；Described electric capacity one end is connected between the resistance and the front end interface, the other end ground connection of the electric capacity.
- 3. electrostatic protection apparatus as claimed in claim 1 or 2, it is characterised in that the filtering frequency range of the static leakage circuit Working frequency range not comprising the back-end circuit.
- 4. electrostatic protection apparatus as claimed in claim 3, it is characterised in that the static leakage circuit also includes transient state and suppressed Diode, one end of the Transient Suppression Diode are connected with the front end interface, the RC filter circuits simultaneously, the transient state Suppress the other end ground connection of diode.
- 5. electrostatic protection apparatus as claimed in claim 3, it is characterised in that the static leakage circuit also includes transient state and suppressed Diode, one end of the Transient Suppression Diode are connected with the RC filter circuits, the back-end circuit simultaneously, the transient state Suppress the other end ground connection of diode.
- 6. the electrostatic protection apparatus as described in claim 4 or 5, it is characterised in that the Transient Suppression Diode is ambipolar Transient Suppression Diode.
- 7. electrostatic protection apparatus as claimed in claim 1 or 2, it is characterised in that the back-end circuit includes radio frequency processing electricity Road.
- 8. electrostatic protection apparatus as claimed in claim 1 or 2, it is characterised in that the front end interface includes：Antenna, USB connect The shell fragment of mouth, COBBAIF or SIM card.
- 9. a kind of radio circuit, it is characterised in that let out including RF transceiver, radio frequency switching circuit chip, antenna and electrostatic Electric discharge road；The RF transceiver, radio frequency switching circuit chip, static leakage circuit and antenna are sequentially connected；The electrostatic Leadage circuit includes RC filter circuits, and the electrostatic induced current for being transmitted to the front end interface is released.
- 10. radio circuit as claimed in claim 9, it is characterised in that the radio frequency switching circuit chip include first switch, Second switch, the 3rd switch, the first combiner and the second combiner, the first switch, second switch, third switch can divide Shu Chu not high-frequency signal, intermediate-freuqncy signal, low frequency signal；The first switch, second switch are alternative to connect first combiner, to realize high-frequency signal and intermediate-freuqncy signal Carrier aggregation；Alternative connection second combiner of the first switch, the 3rd switch, to realize high-frequency signal and low frequency signal Carrier aggregation；Alternative connection second combiner of the second switch, the 3rd switch, to realize intermediate-freuqncy signal and low frequency signal Carrier aggregation；The first switch, second switch are alternative to connect first combiner, and the 3rd switch, described first Combiner is alternative to connect second combiner, to realize high-frequency signal, intermediate-freuqncy signal, low frequency signal carrier aggregation.
- 11. a kind of electronic equipment, it is characterised in that including screen, housing and electrostatic protection apparatus, the screen and described Electrostatic protection apparatus is arranged on the enclosure interior, and the electrostatic protection apparatus is quiet as described in claim any one of 1-8 Electric protector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710775702.0A CN107645899A (en) | 2017-08-31 | 2017-08-31 | Electrostatic protection apparatus and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710775702.0A CN107645899A (en) | 2017-08-31 | 2017-08-31 | Electrostatic protection apparatus and electronic equipment |
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| CN107645899A true CN107645899A (en) | 2018-01-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710775702.0A Pending CN107645899A (en) | 2017-08-31 | 2017-08-31 | Electrostatic protection apparatus and electronic equipment |
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| CN (1) | CN107645899A (en) |
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| CN109640515A (en) * | 2019-01-28 | 2019-04-16 | 晶晨半导体（深圳）有限公司 | A kind of printed circuit board structure |
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| CN110825682A (en) * | 2019-11-05 | 2020-02-21 | 维沃移动通信有限公司 | USB control method and electronic equipment |
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