CN112134983A - Remote interference silencing method for mobile phone receiver and mobile phone with screen local sound - Google Patents

Abstract

A mobile phone receiver remote interference silencing method and a mobile phone with screen local sound belong to the field of electronic mechanical structures, and the core structure of the mobile phone receiver remote interference silencing method comprises the following steps: the mobile phone comprises a mobile phone screen component, a rear shell, an electronic mainboard, a loudspeaker, a microphone, a battery and an antenna; the method is characterized in that: the core component of the loudspeaker used at the receiver position of the mobile phone is a multi-vibration-point exciter, the local sound of the mobile phone screen adopts a loudspeaker sound wave interference remote silencing method, namely, a plurality of exciters with independent electrode leads arranged on the surface of the same support are attached to the mobile phone screen, the independent electrode leads are connected into respective audio driving circuits, and because the phase difference between the positive polarity audio signal and the negative polarity audio signal is opposite or 180 degrees, the distance from the loudspeaker is larger than the screen surface position of the loudspeaker in the relative long range of the mobile phone screen, and the independent electrode leads are connected into respective audio frequency which is short in full audio frequency or is divided by sections.

Description

Remote interference silencing method for mobile phone receiver and mobile phone with screen local sound

[ technical field ]

The invention belongs to the field of structures and electronic circuits; specifically, the method limits the sound area of the mobile phone screen by means of the interference of sound waves, limits the response area of the mobile phone screen to call vibration, and achieves the aim of personal call privacy.

[ background art ]

With the continuous development of the communication industry, the smart phone has an open operating system, hardware and software expandability and supports secondary development of third parties.

The smart phone can be regarded as a pocket computer. It has processor, memory, input and output equipment (keyboard, display screen, USB interface, earphone interface, camera head, etc.) and I/O channel. The handset communicates with the base station via an air interface protocol (e.g., GSM, CDMA, PHS, etc.), which may transmit both voice and data.

The main circuit board of the smart phone is the most important part in the smart phone, and is positioned inside the smart phone and connected with each part through data soft lines or contacts. The main circuit board can be said to be a core component of the mobile phone, which is responsible for inputting, outputting, processing, sending of mobile phone signals, and power supply, control and other work of the whole mobile phone. The design of different brands of smart phone circuit boards can be different, some smart phones only have one circuit board, and some smart phones have an auxiliary circuit board besides a main circuit. The secondary circuit board is generally connected with an interface, a camera and other accessories. All mounted on a main circuit board of the smart phone are surface mounted devices which are arranged very tightly, and main chips on the circuit board are welded on the circuit board in a BGA mode.

The circuit structure of the smart phone is that the circuit of the smart phone is the core of the smart phone and is responsible for power supply and control of the smart phone and realization of various functions of the smart phone. The circuit of smart mobile phone mainly includes: radio frequency circuits, voice circuits, processor and memory circuits, power and charging circuits, operating and on-screen display circuits, interface circuits, and other functional circuits (e.g., bluetooth, antenna, radio, sensor, vibrator, camera circuits, etc.).

The specific design process comprises the following steps:

the method comprises the following steps of determination of a mainboard scheme, determination of the appearance of the mobile phone, structural modeling, manufacture and appearance adjustment of an appearance hand plate, structural design optimization, structural review, verification of a large-structure hand plate and the like.

In addition, the method also comprises the following steps; the process comprises the steps of die inspection, item follow-up during die putting, die testing and changing, trial production and mass production.

The main board shielding case is an important part, and the shielding case is used for enclosing the receiving circuit, equipment or system and preventing the receiving circuit, the equipment or the system from being influenced by an external electromagnetic field. Because the shielding body can absorb energy to external interference electromagnetic waves and internal electromagnetic waves from wires, cables, components, circuits or systems and the like, when the frequency of the interference electromagnetic field is high, the eddy current generated in the metal material with low resistivity is utilized to form the effect of eliminating the external electromagnetic waves, thereby achieving the shielding effect. When the frequency of the interference electromagnetic wave is low, a material with high magnetic permeability is adopted, so that magnetic lines of force are limited in the shield body, and are prevented from being diffused to a shielded space. In some cases, if a good shielding effect is required for both high-frequency and low-frequency electromagnetic fields, different metal materials are often used to form the multilayer shield. The thickness of the zinc tin nickel alloy base is 0.2mm, and the thickness of the cover is 0.13 mm. Stainless steel cover plate 0.13mm cupronickel base thickness 0.2mm, lid 0.13mm, one-piece, two-piece, material: foreign white copper, stainless steel, ZSNH zinc tin nickel alloy, the sucking disc region of diameter 5mm should be designed in advance in shielding support focus department, and shielding lid louvre diameter 1 mm. In the process of main board pasting process, because the collision of the parts caused in the process of sucker transportation is avoided, the minimum gap of 0.3-0.4mm from the top of the shielding cover to the device is always required to be kept, and the thickness of the main board is inevitably increased!

Total thickness of the current master plate of about 3.5-3.8mm, distribution: PCB board 0.8mm thick, 2 layers of shielding lid 2x1.4mm thick 2.8mm thick, according to stacking order: the thickness of the mobile phone depends on 5 main factors: the display device comprises front surface glass, TP, a liquid crystal display, a battery, a mainboard and a rear cover; as for the current device case: the front surface glass (the shatterproof glass is additionally added with 0.4mm) is about 0.3-0.4mm, the TP (touch screen) is about 0.6mm, the liquid crystal screen is about 1.8mm (including the thickness of the Row IC, the OLED screen is about 0.6mm), the battery and the main board are about 3.5-3.8mm, and the rear cover is 1.0 mm; the sum of the total thickness of the two layers reaches 7.2-7.8 mm; the thickness of the current mobile phone is the common thickness, and the thickness limit of the current mobile phone adopting the OLED screen reaches about 6 mm!

Regarding the wireless charging technology of the mobile phone and the waterproof mobile phone with no hole: a large number of designs appear at home and abroad, and the electric meter has the following characteristics:

charm, non-porous concept mobile phone of VIVO:

charm "PPT" cell-phone was distributed in 1019 1 month 23 days, and charm has called a field line and has released the meeting, has pushed out a type Zero true no-hole cell-phone, and the title is the first true no-hole product of global. The day before the release of a new preemptive Vivo non-hole design. A new machine Zero created based on the same idea is created by a charm with little message in a direct online broadcast mode one day before a Vivo new APEX concept machine with a pore-free design is used in the news of the news.

The hole-free finger of the mobile phone does not form a hole on the screen, but means that the hole of the earphone, the charging data port, the solid key and other parts needing to be opened are eliminated. In the aspect of the outward appearance, this conceptual machine of charm has adopted the very similar comprehensive screen scheme with samsung, and the forehead chin constriction keeps the symmetry, and what openly carried on is a curved surface OLED screen, and 5.99 cun do not have the flexible full screen of bang, has built-in photoelectric screen fingerprint module simultaneously. Support screen sound production technique to carried on the screen fingerprint technique, the fuselage has adopted the design of Uniboy integral type, and the back material is pottery, and whole center fuses into an organic whole. The thickness of the device is approximately 7.8mm and the weight is maintained at about 180 g. The charm zero holeless cell phone is still a conceptual product that is not temporarily mass produced and sold. The charm family is very big this time, and the mouth that charges is also cancelled, and the substitution scheme is the wireless quick-charging technique that the charm family researched and developed, and maximum power can reach 18W, compares favourably wired quick-charging, and the charm family has still promoted special wireless charger for this reason, and the charm family president plum is that the time of work electric quantity still is full, does not worry the electric quantity problem evening, but heavy hand trip player, battery can persist the next day bright? In addition, the mobile phone also cancels a SIM card slot, realizes aerial card issuing through an eSIM technology, avoids the trouble of card changing, and can automatically switch operators by only easily operating on the mobile phone. At present, the link has already added support for this product, but if the mobile telecommunication user wants to use it normally, it may need to wait again. The configuration aspect adopts a cellcept 845 processor, the 10nm process is adopted, the Sony IMX380+ IMX350 double shot which is in one pulse with charm 16th is adopted, the IP68 is waterproof, the Linan indicates that the processor becomes the latest processor when the processor is listed later, the price and the listed time of the processor are not published in the release of the time, and the Linan also repeatedly emphasizes that the processor is a conceptual product. The mobile phone is small in size, has no hole, does not have SIM, and is charged wirelessly, although various high technologies are integrated, if the mobile phone cannot be used in mass production, the mobile phone can only fall under the name of the PPT mobile phone.

The front-end-free mobile phone of the vivo 'straight man' is released in 1019, 1 month and 23 days, and the first-style integrated 5G complete-function mobile phone APEX2019 which integrates a plurality of black technologies is released in the Beijing by the vivo. Before release, officers confirmed that APEX of this time spent much work on modeling. The design is based on the concept of 'water drop', and the design is like charm Zero published in advance, and the design is strived to achieve the effect of 'no hole' of the fuselage. However, unlike Zero using ceramic back, the front and back of APEX are integrally formed continuous curved glass (formed by hot bending and CNC engraving). In addition to a small microphone under the screen, it also removes the earpiece/speaker opening, the earpiece holes, the physical keys, the SIM card slot and the usual USB charging/data port. The 3.5mm jack and the sound producing part should be replaced by wireless, while the latter relies on the screen to achieve similar effects, as already existed in the first APEX/NEX generation. As for the physical keys, Vivo is replaced by capacitive touch technology in combination with pressure sensing technology. The pressure sensor can detect the force applied to the middle frame of the mobile phone by a user, and the capacitance module can determine the pressing position of the finger (the factory does not forget to add a linear motor to improve the feedback hand feeling). That is, APEX does not accidentally turn to eSIM without a SIM card slot. Finally, the implementation of the charging/data port is not as aggressive as charm. A MagPort magnetic suction port is arranged at the position below the APEX back cover, and charging and data transmission can be achieved through the MagPort magnetic suction port. It is worth mentioning that screen fingerprinting, where vivo has been strongly pushed forward, again reaches a new height on APEX 2019. The APEX of the prior generation has already displayed a half-screen large-area identification area (recently, the APEX is just taken out by other manufacturers for promotion), and the coverage is directly upgraded to the whole screen at this time. That is, you can enter a fingerprint or light a local unlock at any position on the screen (the corresponding area will be automatically lighted when the finger approaches). The double-finger recognition appearing on the APEX of the first generation also exists, and in addition, the factory also has the function of directly entering the app after pressing. Besides the above black technologies, the hardware configuration of the vivo APEX2019 is very strong, a high-pass cellcell 855 processor is carried, and a 12GB +512GB ultra-large storage combination is used as an auxiliary component, so that the existing invincible agent exists in the current Android smart phone world. The rear camera is 12MP +13MP, and no self-timer camera is confirmed. The net friends directly call the direct male mobile phone for the end! Although the vivo official does not disclose the time for mass production at the release meeting of APEX2019, from the situation that APEX is released first in the last year and then vivo puts part of the technology of APEX into NEX, today many black technologies on APEX2019 will be partially commercialized in a new NEX machine of the new type in this year, and therefore the situation is expected. Since the vivo can create APEX2019 supporting the 5G network, it is thought that many consumers also want to know when the vivo can produce other mobile phones supporting the 5G network, the vivo official expression shows that the first 5G pre-commercial terminal can be provided in 2019, and the large-scale commercial of the 5G mobile phone can be realized in 2020. The two kinds of non-porous mobile phones leading to the future trend are good in appearance, but how can the mobile phone be played during charging? This is really a hard wound. In summary, however, charm and vivo this time the emerging novelty does fill with various thoughts and leading-edge technologies that may provide a new direction of development for the current smartphone industry. For the editor himself, the fast production and distribution of these products is very desirable, and after all we have looked at the various bangs and drops.

The wireless charging technology of cell-phone divides into 3 major types: 1. alternating magnetic fields (i.e., electromagnetic induction: magnetic coupling and magnetic resonance); 2. electromagnetic fields (radio waves contain WiFi bands); 3. energy beams (ultrasound and focused light).

The electromagnetic induction charging base and the mobile phone terminal are respectively provided with a built-in coil, when the electromagnetic induction charging base and the mobile phone terminal are close to each other, the transmitting coil generates a certain current in the mobile phone receiving coil through electromagnetic induction based on alternating current with a certain frequency, so that point energy is transferred from the transmitting end to the receiving end, and the mobile phone is supplied with power from the charging base. Because the principle is simple and the manufacture is easy, and the promotion of manufacturers such as Texas instruments, Philips, Toshiba, Microsoft, Song-xia, Samsung, Sony and Highuagh-pass is the most popular mode in the market. However, wireless charging based on electromagnetic induction also has disadvantages, of which the transmission distance is severely limited, which is the most troublesome.

Magnetic resonance: the magnetic resonator is composed of a large inductance coil with a small capacitance connected in parallel or in series, and the same resonance frequency is a necessary condition for energy transfer. For example, two coils are used as a resonator, the transmitting end vibrates at a frequency of 10MHz to radiate an electromagnetic field to the surroundings, and the receiving end needs to vibrate at the same frequency of 10MHz to receive the transmitted energy. Compared with electromagnetic induction, the wireless charging mode based on magnetic resonance realizes long transmission distance and high-efficiency power supply and is a one-to-many power supply mode. However, because both are required to be at the same resonant frequency at the same time, circuit tuning is important, but not so easy.

Radio wave:

the principle is to convert the ambient electromagnetic waves into electric current and transmit the electric current through the circuit. The transmission distance of the wireless charging mode is more than 10 meters, the wireless charging mode is suitable for long-distance low-power charging, and automatic charging at any time and any place can be realized. However, for reasons of low conversion efficiency, the charging time will be relatively long if this is done.

WiFi wireless charging:

this charging system consists essentially of two components, one being a Wi-Fi access point (router) and the other being a custom charging sensor. It should be noted that, in this way, the conventional wireless router does not need to be replaced, and only a scheme such as software needs to be deployed, and the charging function can coexist with the internet access function without causing mutual influence. The charging device has the advantages that the charging device can be charged along with walking, is very convenient for users, and has the defects that the charging object is not easy to position, and the electric quantity is wasted.

Ultrasonic wireless charging: the principle is to use ultrasonic waves to transmit electricity over 15 feet (about 4.6 meters). Therefore, the user can hold the mobile phone to walk in the house while charging only by using the special wireless charging sleeve. The technology is very safe, the price of the receiver is low, the volume is small, and besides wireless charging, data transmission can be realized. However, the final product may not be as cost, power, speed, and safety as desired.

Focusing light: this is a new wireless charging technology "AutoCharge" developed by microsoft. AutoCharge is described as a technique to automatically locate and charge a desktop handset. The system comprises two modules, a monitoring module with an image processing function in the form of a camera and a charging module which focuses LED light by adopting UltraFire CREE XM-L T6. At that point, the charger will continue to rotate until an object is detected that looks like a smartphone, after which the smartphone will be remotely charged using the light beam generated by the solar power generation technology.

A screen sounding smart phone applies international leading screen sounding, namely 'piezoelectric driver technology' to a smart phone, so that the function of a receiver and an IPS high-definition screen are perfectly integrated, and a receiver sounding hole does not need to be formed in the front face of the smart phone. When the piezoelectric driver is electrified to work, the touch screen of the mobile phone generates vibration along with the piezoelectric driver, and then air is pushed to generate sound.

The screen sounding smart phone enables ears to be close to any position of a screen to hear high-quality sound, and therefore answering is facilitated and the conversation effect is clearer. The earphone structure is revolutionarily cancelled on the smart phone, and the full-mirror design is realized. And the waterproof and dustproof functions of the front side of the mobile phone can be realized. In 10 months 2014, Shenzhen Wanlida mobile communication Limited introduced a smart phone "Dada X6" which was the smart phone applying the "screen sounding technology" first in the world. The ears can hear ultra-clear sound when being close to any place of the mobile phone screen, the whole screen can talk, and the ears do not need to search for the earphones! The perfect and integrated smart phone is in the front, and rain, sweat and dust are difficult to enter. In 1 month 2017, SONY released 4K OLED TV, model A1. One of the selling points is screen sound (acoustic surface), which is simply to make the panel vibrate to emit sound waves. In addition, the positions of the pictures, characters and sounds are unified by analyzing the pictures and the sounds, and the experience of integrating the pictures and the sounds is created. Moreover, a subwoofer is hidden in the A1 television back panel, clear middle and high frequencies and low frequencies of surge can be brought to users, and the sound effect of A1 is layered. In 6 months in 2018, the vivo issues NEX, and a new high-end flagship product series of the vivo is started, and is also a commercial edition of the vivo APEX full-screen concept machine. The vivo NEX replaces the traditional earphone with the full-screen sounding technology, and drives the whole screen to sound through the micro-vibration unit. Bang-free, trompil-free, lift-up proactive, excellent ID design has led to countless concerns and discussions. Among the products released by these two companies,

the screen sounding principle is that a front screen and a structure are driven by an exciter (activator), the screen is used as a vibrating body, sound waves are generated by vibration and then transmitted to human ears. The overall structure can be illustrated by the following figures: first we look at the exciter. At present, screen sounding exciters on mobile phones mainly have two types: piezoelectric ceramic unit actuators and micro-vibration unit actuators. The following are described respectively: the piezoelectric ceramic unit exciter is firstly used on a Sharpu AQUOS Crystal mobile phone, but the bone conduction technology is advertised at the time, and the millet MIX makes the screen sound really enter the visual field of the public. Multiple layers of piezoceramic wafers are attached to a thin metal sheet, called a diaphragm. The alternating voltage is applied to the vibrating membrane, and the load structure is driven to vibrate and sound by continuous up-and-down bending along with the change of the voltage. The principle of the micro-vibration unit exciter, which can be called a linear vibrator, is close to that of a linear motor, and the micro-vibration unit exciter generate a force field by utilizing the interaction of an electric field and a magnetic field. We take the example of a vivo NEX, where the micro-vibrating element is comparable in size to a conventional handset, and is not much thicker than the piezoelectric ceramic element. The attaching position is also on the middle frame and is not directly attached to the back of the screen. The low frequency performance of piezo ceramic actuators is poor. And the micro-vibration unit, from the device, the frequency response range in the voice range is relatively balanced and flat, even close to the performance of a conventional receiver, so that the screen sounding design is possible to obtain good hearing. The piezoelectric ceramic exciter has the defects of low frequency, and needs to be improved in monomer technology, such as lamination technology, sintering process and the like, which is not described in detail herein. After analyzing the exciter unit, we look back at the overall structure. The exciter is not referred to as an "earpiece" or "receiver" because from this name, it is known that it functions to excite other structures to produce vibrations to produce a sound. The micro-vibration unit excites the middle frame to drive the screen (and other structures) to vibrate, and therefore acoustic signals are generated. Then, how do the acoustic signal behave? In summary, under the situation that the mobile phone is integrated with more and more functions and the internal space is limited, the trend that the components can be reduced, multitask and even deformed is about to be achieved.

[ summary of the invention ]

The defects of the current mobile phone piezoelectric ceramic horn (receiver) sound wave conduction are as follows:

at present, piezoelectric ceramic horns are directly attached to a glass panel of a mobile phone in a back-to-back mode, and 2-face electrodes of piezoelectric ceramic are directly driven by simplified audio signals, so that sound waves are transmitted to the whole screen of the mobile phone without limitation, and the requirement for privacy of personal communication cannot be met in the whole area of response of communication vibration.

The purpose of the invention is as follows:

the response area of the mobile phone screen call vibration is limited, and the aim of personal call privacy is fulfilled.

The invention is characterized in that: the method limits the sound area of the mobile phone screen by means of the interference of sound waves, and has the advantages of simple conception, no increase of cost and reliable process operation.

Remote interference silencing method for mobile phone receiver and mobile phone with remote interference silencing method

The specific implementation mode is as follows:

the invention relates to a remote interference silencing method for a mobile phone receiver, which comprises the following steps: the core structure of the corresponding mobile phone comprises: the mobile phone comprises a mobile phone screen component, a rear shell, an electronic mainboard, a loudspeaker, a microphone, a battery and an antenna; the invention is characterized in that: the core components of the loudspeaker used at the receiver position of the mobile phone are a multi-vibration-point exciter, and the core structure mainly comprises an exciter (an exciter: two types, namely a piezoelectric ceramic unit exciter and a micro-vibration unit exciter), a bracket, an electrode lead and the like.

The invention has the structural characteristics that: multiple actuators, each with its own separate electrode lead, are mounted on the surface of the same support. The position distribution of the exciters is in an array mode (in a row mode and a column mode), a radial mode (in an arc mode and a ring mode), or an annular exciter mode (at least 1 exciter is processed into an annular shape, and the characteristic that the superposition of sound waves at the long-range screen position is cancelled by utilizing the superposition interference of the ring exciter and the exciters in the ring is adopted).

The working principle of the mobile phone screen local tone of the invention is as follows: the application of the horn sound wave interference remote silencing method comprises the following steps: attaching a plurality of exciters with independent electrode leads, which are arranged on the surface of the same support, to a mobile phone screen, and driving the front screen to serve as a vibrating body; when a part of the electrode leads are connected with positive polarity audio signals and the other part of the electrode leads are connected with negative polarity audio signals, the phase difference is 180 degrees, and the synthesis of vibration is in a mutual reduction state (equivalent to a wave interference destructive state) at the position of the relative long-distance transmission of a mobile phone screen (the distance from a loudspeaker is larger than the screen surface position of the loudspeaker), so that the vibration amplitude is sharply reduced at the position far away from the loudspeaker, along with the distance, and the sound production of the screen is only limited at the position near the loudspeaker.

The individual electrode leads are switched into the respective audio frequencies either full tone short or segmented.

To obtain better vibration cancellation effects: the audio is divided into a plurality of frequency bins in an electronic process: namely a high frequency section, a middle frequency section and a bottom frequency section; each frequency section is sounded by more than 2 independent exciters, and the electrode leads are respectively connected with the negative polarity audio signal and the positive polarity audio signal at the same time, so that the effect is better because the audio frequency of each section is relatively single.

The invention obtains a mobile phone with screen local tone, and the core structure of the mobile phone comprises: the mobile phone comprises a mobile phone screen component, a rear shell, an electronic mainboard, a loudspeaker, a microphone, a battery and an antenna; the method is characterized in that: the core component of the loudspeaker used at the receiver position of the mobile phone is a multipoint independently driven exciter, the connection with the audio circuit of the mainboard is independently connected, and a mobile phone receiver remote interference silencing method is adopted in the audio driving mode.

Further: one part of the electrode leads of the exciter is connected with audio signals with positive polarity, and the other part of the electrode leads of the exciter is connected with audio signals with negative polarity; the number of actuators of (2) to (100): wherein the number of exciters accessing the positive polarity signal is 1-99.

Further: when the mobile phone is played as a mobile phone sound: the electrode leads of all the exciters are connected with audio signals with the same polarity, so that all audio signals are superposed and played outwards together.

Further: the plurality of exciters belong to a single bracket or are independent brackets, the independent brackets are equivalent to a plurality of independent receiver horns, and the remote silencing effect of the plurality of exciters on 1 single bracket is also achieved by utilizing the modulation of the invention with opposite phases or 180-degree phase difference; the phase difference does not require exactly 180 degrees, allowing an error range of 180+/-70 degrees with little difference in effect.

The invention has the advantages of obviously reducing the generation area of the screen and well meeting the requirement of private conversation occasions.

[ description of the drawings ]

FIG. 1 is a schematic view of a remote silencing speaker

Fig. 2 is a schematic structural diagram of a mobile phone with a remote acoustic interference sound-deadening speaker (receiver)

Description of reference numerals:

1 exciter

2 support

3 electrode lead

4 mobile phone screen

5 mainboard contains audio drive circuit

6 cell

7 pick-up head

8 rear shell

9 remote silencing loudspeaker

10 screen silencing position

20 support

22 exciter

23 exciter

24 actuator

25 exciter

[ examples of embodiment ]

The invention is further described in the following preferred embodiments with reference to the accompanying drawings in which:

as shown in fig. 1 and 2:

in fig. 1 and 2, the remote silencing horn is constructed in 3 types, and a plurality of exciters (1) are arranged on the surface of the same bracket (2), and each exciter has an independent electrode lead (3): one is that the positions of the exciters on the surface of the bracket (2) are distributed in an array, such as the arrangement of 2 exciters (1); the other is that the positions of the exciters on the surface of the bracket (20) are distributed in a ring radial mode as follows: arrangement of exciters (22), (23), (24), (25); the third is a ring exciter type (not shown).

In fig. 1, the electrode leads (3) of 2 actuators (1) are respectively connected with audio signals with positive polarity and negative polarity, and the screen position far away from the loudspeaker is under the condition of common modulation of the 2 actuators (1), and the 2 distances are not greatly different, so that the vibration cancellation trend is presented.

For the multi-exciter case of the lower diagram in fig. 1: 3 pairs of matches can be selected, the handset circuit divides the audio into a plurality of 3 frequency bands: namely a high frequency section, a middle frequency section and a bottom frequency section; more than 2 exciters are connected into each frequency section, and the corresponding electrode leads are respectively connected with the negative polarity audio signal and the positive polarity audio signal at the same time, so that the effect is better because the audio frequency of each section is relatively single.

In fig. 2 and 1, the remote silencing loudspeaker (9) is attached to the back of the mobile phone screen (4) to drive the screen in front to vibrate, so as to complete the sound reproduction function. The rear shell (8) and the rear shell enclose the inner space of the whole mobile phone, and the battery (6) and the camera (7) are included to burden the operation of the whole mobile phone; after the independent electrode leads are connected to the audio driving circuits (5) contained in the respective main boards, when one part of the electrode leads are connected to positive polarity audio signals and the other part of the electrode leads are connected to negative polarity audio signals, because the phases of the positive polarity audio signals and the negative polarity audio signals are opposite or differ by 180 degrees, at the position of the mobile phone screen where the relative long distance (the distance from the loudspeaker is larger than the screen surface position of the loudspeaker scale) is transmitted, the synthesis of vibration is in a mutual reduction state (equivalent to a wave interference cancellation state), such as: the screen silencing position (10). Thus, at a position far from the screen where the horn is placed, the amplitude of the vibration sharply decreases with distance, and the sound emission from the screen is limited only to a position near the placed horn.

Other parts of the mobile phone are not related to the invention, are not shown, and other functional connections in the mobile phone belong to known technologies.

Claims (5)

1. A mobile phone receiver remote interference silencing method comprises the following core structures: the mobile phone comprises a mobile phone screen component, a rear shell, an electronic mainboard, a loudspeaker, a microphone, a battery and an antenna; the method is characterized in that: the core component of a loudspeaker used at the position of a receiver of the mobile phone is a multi-vibration-point exciter, and a plurality of independent exciters are arranged on the surface of the same support, and each exciter is provided with an independent electrode lead wire; the position distribution of the exciters is in an array type arrangement mode, a radial type arrangement mode or an annular arrangement mode, at least 1 exciter is processed into an annular shape in the annular arrangement mode, and at least 1 independent exciter is arranged in the ring; the working principle of the local sound of the mobile phone screen is as follows: the application of a horn sound wave interference remote silencing method is adopted: attaching a plurality of exciters with independent electrode leads arranged on the surface of the same support to a mobile phone screen, and driving the front screen to use the screen as a vibrating body; when one part of the electrode leads are connected with positive polarity audio signals and the other part of the electrode leads are connected with negative polarity audio signals, because the phases of the positive polarity audio signals and the negative polarity audio signals are opposite or differ by 180 degrees, the distance from the loudspeaker to the screen surface position with the size larger than that of the loudspeaker is in a mutual reduction state at the transmission position in the relative long range of the mobile phone screen, so that the vibration amplitude is sharply reduced along with the distance at the position far away from the loudspeaker placed on the screen, and the sounding of the screen is only limited at the position near the loudspeaker placed on the screen; the individual electrode leads are switched into the respective audio frequencies either full tone short or segmented.

2. The mobile phone with screen local sound, its core structure includes: the mobile phone comprises a mobile phone screen component, a rear shell, an electronic mainboard, a loudspeaker, a microphone, a battery and an antenna; the method is characterized in that: the core component of the loudspeaker used at the receiver position of the mobile phone is a multipoint independently driven exciter, the connection with the audio circuit of the mainboard is independently connected, and a mobile phone receiver remote interference silencing method is adopted in the audio driving mode.

3. The number of actuators according to claim 1 for remote interference cancellation of handsets, wherein: one part of the electrode leads is connected with audio signals with positive polarity, while the other part of the electrode leads is connected with audio signals with negative polarity, the number of the exciters is 2-100: wherein the number of exciters accessing the positive polarity signal is 1-99.

4. The multi-vibration exciter of claim 1, further comprising: the plurality of exciters belong to a single bracket or are independent brackets, the independent brackets are equivalent to a plurality of independent receiver horns, and the remote silencing effect of the plurality of exciters on 1 single bracket is also achieved by utilizing the phase reversal or modulation with the phase difference of 180 degrees; the phase difference does not require the exact 180 degrees, allowing a 180+/-70 degree error range with little difference in effect.

5. The method of claim 1 wherein the individual electrode leads are connected to respective audio frequencies that are short in full audio frequency or divided in segments, wherein: to obtain better vibration cancellation effects: the audio is divided into a plurality of frequency bins in an electronic process: namely a high frequency section, a middle frequency section and a bottom frequency section; each frequency section is sounded by more than 2 independent exciters, and the electrode lead is also respectively connected with a negative polarity audio signal and a positive polarity audio signal at the same time, because the audio frequency of each section is relatively single, the effect is better.

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