WO2022143485A1

WO2022143485A1 - Electronic device

Info

Publication number: WO2022143485A1
Application number: PCT/CN2021/141479
Authority: WO
Inventors: 郑宁杰; 李伟
Original assignee: 维沃移动通信有限公司
Priority date: 2020-12-30
Filing date: 2021-12-27
Publication date: 2022-07-07
Also published as: CN112788163B; CN112788163A

Abstract

The present application relates to the technical field of communication devices and discloses an electronic device. The electronic device comprises a display module, a housing, and at least two ultrasonic vibrators; the display module comprises a display surface and a support surface which are distributed oppositely; the housing is connected to the display module; the housing and the display module define an accommodation space; the support surface faces the housing; the at least two ultrasonic vibrators are provided in the accommodation space, and both are attached to the support surface; each ultrasonic vibrator is distributed opposite to a sub-area in a center area of the display surface; and under the condition that the at least two ultrasonic vibrators output at least two ultrasonic waves by means of at least two sub-areas, the at least two ultrasonic waves are demodulated to form target audible sound waves at a target position.

Description

Electronic equipment

cross reference

The present invention claims the priority of the Chinese patent application with the application number 202011622382.3 and the invention name "Electronic Device" filed with the China Patent Office on December 30, 2020, the entire contents of which are incorporated herein by reference.

technical field

The present application belongs to the technical field of communication devices, and in particular relates to an electronic device.

Background technique

With the rapid development of electronic devices, the applications of electronic devices are becoming more and more extensive, and electronic devices such as mobile phones and tablet computers play more and more roles in people's work, life, and entertainment.

In the related art, an ultrasonic transmitter is arranged inside the electronic device, and the ultrasonic transmitter emits two beams of ultrasonic waves, which are demodulated in the air. Directivity, and then realize the directional delivery of sound.

In the process of realizing the invention of the present invention, the inventor found that the related technology has the following problems. A sound guide hole or sound guide channel needs to be opened on the shell of the electronic device, and the ultrasonic wave emitted by the ultrasonic transmitter is transmitted to the sound guide hole or sound guide channel through the sound guide hole or sound guide channel. Outside the electronic equipment, the sound guide holes or sound guide channels destroy the integrity of the shell of the electronic equipment, making the appearance of the electronic equipment less consistent, and occupying the display area of the display module. Water and dust resistance are poor, resulting in poor reliability of electronic equipment.

SUMMARY OF THE INVENTION

The purpose of the embodiments of the present application is to provide an electronic device that can solve the problem of low reliability of the electronic device.

In order to solve the above technical problems, this application is implemented as follows:

The embodiment of the present application provides an electronic device, including:

a display module, the display module includes a display surface and a support surface distributed in opposite directions;

a casing, the casing is connected with the display module, the casing and the display module enclose a accommodating space, and the supporting surface faces the casing;

At least two ultrasonic vibrators, the at least two ultrasonic vibrators are arranged in the accommodating space, and the at least two ultrasonic vibrators are attached to the support surface, each of the ultrasonic vibrators and the relative distribution of a sub-area in the central area in the display surface;

In the case where the at least two ultrasonic vibrators output at least two ultrasonic waves through at least two of the sub-regions, the at least two ultrasonic waves are demodulated to form target audible sound waves at the target location.

In the embodiment of the present application, the ultrasonic vibrator pushes the display module to vibrate to emit ultrasonic waves, and at least two ultrasonic vibrators emit at least two series of ultrasonic waves, and the two series of ultrasonic waves propagate in the same direction. When demodulating the difference frequency sound wave, the generated difference frequency sound wave is audible to the human ear, and the difference frequency sound wave has high directivity, so that the sound propagates to the designated area, and other areas are not easy to hear. In this solution, the ultrasonic vibrator pushes the display module to vibrate and emit ultrasonic waves. At this time, the display module is equivalent to a diaphragm, and the ultrasonic waves emitted by the display module are directly transmitted to the outside of the electronic device, so that there is no need to provide a guide on the shell of the electronic device. Sound holes or sound guide channels, thereby reducing the number of openings in the casing, thereby improving the integrity and appearance consistency of the casing, so that the appearance performance of the casing is better, and the display area of the display module is further increased. . At the same time, the number of openings of the casing is reduced, and the water vapor and dust in the environment can be effectively relieved from entering the casing, thereby improving the waterproof performance and dustproof performance of the electronic device, thereby improving the reliability of the electronic device.

Description of drawings

1 is an exploded view of a first electronic device disclosed in an embodiment of the present application;

2 is a cross-sectional view of a first electronic device disclosed in an embodiment of the present application;

Fig. 3 is the partial sectional view of Fig. 2;

4 is a schematic structural diagram of some components of the first electronic device disclosed in the embodiment of the present application;

5 is a schematic structural diagram of a casing in the first electronic device disclosed in the embodiment of the present application;

6 and 7 are schematic structural diagrams of a first circuit board in the first electronic device disclosed in the embodiments of the present application;

8 is a schematic structural diagram of an ultrasonic vibrator in the first electronic device disclosed in the embodiment of the present application;

9 is an exploded view of a second electronic device disclosed in an embodiment of the present application;

FIG. 10 is a schematic structural diagram of some components of the second electronic device disclosed in the embodiment of the present application;

11 is a schematic structural diagram of a casing in the second electronic device disclosed in the embodiment of the present application;

12 is an exploded view of the third electronic device disclosed in the embodiment of the present application;

13 is a schematic structural diagram of some components of a third electronic device disclosed in an embodiment of the present application;

Figure 14 is a partial cross-sectional view of Figures 10 and 13;

15 is a schematic structural diagram of an ultrasonic vibrator in the second electronic device or the third electronic device disclosed in the embodiment of the present application;

FIG. 16 is a block diagram of audio signal modulation and demodulation of the electronic device disclosed in the embodiment of the present application.

Description of reference numbers:

100-Display module,

200-shell, 201-first installation area, 202-second installation area, 203-third installation area, 204-fourth installation area, 210-through hole, 220-first avoidance groove, 230-second avoidance groove, 240-second connecting hole, 250-second positioning part, 260-separating protrusion, 270-first structure, 280-plate structure,

300-ultrasonic vibrator, 310-second electrical connector, 320-first connection hole, 330-first positioning part,

400-first circuit board, 410-first electrical connector, 430-third circuit board, 440-fourth circuit board,

500-reinforcing board,

610-second circuit board, 620-circuit board bracket, 630-fourth functional device,

710-First functional device, 720-Second functional device, 730-Third functional device, 740-Assembly gap,

800-Connector.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

The terms "first", "second" and the like in the description and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It is to be understood that data so used may be interchanged under appropriate circumstances so that embodiments of the application can be practiced in sequences other than those illustrated or described herein. In addition, "and/or" in the description and claims indicates at least one of the connected objects, and the character "/" generally indicates that the associated objects are in an "or" relationship.

The electronic device provided by the embodiments of the present application will be described in detail below through specific embodiments and application scenarios with reference to the accompanying drawings.

Referring to FIGS. 1 to 16 , an embodiment of the present application discloses an electronic device. The disclosed electronic device includes a display module 100 , a housing 200 and at least two ultrasonic vibrators 300 .

The display module 100 is used for displaying display information such as pictures, texts or videos of the electronic device. The display module 100 includes a display surface and a support surface disposed opposite to each other, the display surface is exposed, and display information is displayed on the display surface.

The housing 200 provides an installation basis for the display module 100 and other components of the electronic device. The casing 200 is connected to the display module 100 , and the casing 200 and the display module 100 are enclosed to form an accommodation space 210 , and the supporting surface faces the casing 200 .

At least two ultrasonic vibrators 300 are disposed in the accommodating space 210, and are attached to the support surface, and each ultrasonic vibrator 300 is distributed relative to a sub-area in the central area of the display surface. The ultrasonic vibrator 300 pushes the display module 100 to vibrate and emit sound. At this time, the display module 100 is equivalent to a diaphragm, and the display module 100 vibrates, so that the screen of the electronic device can emit sound.

In the case where the at least two ultrasonic vibrators 300 output at least two ultrasonic waves through at least two sub-regions, the at least two ultrasonic waves are demodulated to form target audible sound waves at the target position.

In the specific operation process, the electronics are provided with a signal processor and a power amplifier. The signal processor can modulate the audio signal of the electronic device into at least two ultrasonic carrier signals. After the at least two ultrasonic carrier signals are amplified by the power amplifier, at least two ultrasonic carrier signals are obtained. At least two excitation signals are applied to at least two ultrasonic vibrators 300, and at least two ultrasonic vibrators 300 push the display module 100 to vibrate to excite at least two ultrasonic waves. The nonlinear demodulation effect of at least two ultrasonic waves forms audible sound waves. By reasonably selecting the frequencies of the at least two ultrasonic waves, the difference frequency sound waves of the at least two ultrasonic waves are audible sound waves.

For example, the frequency of one of the ultrasonic waves can be f1, and the frequency of the other ultrasonic wave can be f2. Due to the nonlinear interaction of air, the two ultrasonic waves are demodulated as f1, f2, f1+f2, f1-f2, 2f1, 2f2, etc. Multiple beams of sound waves, wherein f1-f2 are the difference frequency sound waves. Reasonable selection of the frequencies of f1 and f2 can make f1-f2 audible sound waves, for example, f1=31kHz, f2=30kHz, f1-f2=1kHz, and sound waves with a frequency of 1kHz belong to audible sound waves. Optionally, the at least two ultrasonic vibrators 300 may be speakers or receivers, which are not limited herein.

In the above-mentioned embodiment, the user can adjust the sounding directions of the at least two ultrasonic vibrators 300 so that the sounding directions of the at least two ultrasonic vibrators 300 are directed toward the user, and the electronic device can use the sound emitted by the at least two ultrasonic vibrators 300. Directly propagates to the location of the user, the sound is not easily transmitted to the surrounding environment, avoids affecting the surrounding environment, and thus not easy to affect others, so that the sound emitted by the electronic device can be directionally projected to the designated location.

In the embodiment disclosed in the present application, the ultrasonic vibrator 300 pushes the display module 100 to vibrate and emit ultrasonic waves. At this time, the display module 100 is equivalent to a diaphragm. At this time, the electronic device uses the display module 100 to emit sound. The ultrasonic waves emitted by the display module 100 can be directly transmitted to the outside of the electronic device, so that there is no need to provide sound guide holes or sound guide channels on the housing 200 of the electronic device, thereby reducing the number of openings in the housing, thereby improving the housing. The integrity and appearance consistency of the casing 200 are improved, so that the appearance performance of the casing 200 is better, and the display area of the display module can be increased, thereby improving the user experience. At the same time, the number of openings of the casing is reduced, and the water vapor and dust in the environment can be effectively relieved from entering the casing, thereby improving the waterproof performance and dustproof performance of the electronic device, thereby improving the safety and reliability of the electronic device. .

In addition, each ultrasonic vibrator 300 is relatively distributed with a sub-area in the central area of the display surface. At this time, the ultrasonic vibrator 300 is set close to the central area of the display module 100. Therefore, when the user holds the vertical or horizontal direction When using an electronic device, it is difficult for the user's fingers to press on the area corresponding to the ultrasonic vibrator 300 , so that it is not easy to affect the vibration and sound of the screen, thereby improving the sound performance of the display module 100 of the electronic device.

The casing 200 has various structures. Please refer to FIG. 1 . The casing 200 may include a first structural member 270 and a plate-like structural member 280 , and the plate-like structural member 280 and the display module 100 are distributed on the first structural member 270 . At this time, the display module 100 and the first structural member 270 can be enclosed to form the accommodating space 210 . Optionally, the first structural member 270 may be a main upper cover or a middle frame, and the plate-shaped structural member 280 may be a rear cover of the electronic device. The casing 200 has a simple structure and is convenient to manufacture.

In order to reduce the thickness of the electronic device, in another optional embodiment, the first structural member 270 is provided with a through hole 210 at a position corresponding to the sub-region, and the first structural member 270 and the display module 100 can be enclosed An accommodating space 210 is formed, and at least parts of the at least two ultrasonic vibrators 300 are located in the through hole 210 . In this solution, the at least two ultrasonic vibrators 300 are hidden in the through holes 210 , so that the stacking thickness of the at least two ultrasonic vibrators 300 , the display module 100 and the casing 200 is small, thereby reducing the thickness of the electronic device. In addition, the ultrasonic vibrator 300 is located in the through hole 210 , which also makes it difficult for the ultrasonic vibrator 300 to interfere with other components of the electronic device during the vibration process, thereby improving the reliability of the electronic device.

In another optional embodiment, the number of the through holes 210 may be at least two, the at least two through holes 210 may be arranged at intervals, and the at least two ultrasonic vibrators 300 may be arranged in a one-to-one correspondence with the at least two through holes 210 . In this solution, each ultrasonic vibrator 300 corresponds to a through hole 210, and at this time, at least two ultrasonic vibrators 300 are isolated by the through hole 210, so that the two ultrasonic vibrators 300 are far apart, thereby causing the at least two ultrasonic vibrators to vibrate In the process of vibration, the device 300 is not easy to cause mutual influence, thereby improving the sound production performance of the electronic device.

Further, there is a gap between the inner side surface of the through hole 210 and the outer side surface of the ultrasonic vibrator 300 . That is to say, in the axial direction of the through hole 210 , the projected contour of the ultrasonic vibrator 300 may be located within the projected contour of the through hole 210 . At this time, the ultrasonic vibrator 300 is not likely to collide with the inner side of the through hole 210 . , thereby improving the safety and reliability of electronic equipment.

Optionally, the gap between the inner side surface of the through hole 210 and the outer side surface of the ultrasonic vibrator may range from 0.1 mm to 1 mm.

In another optional embodiment, the electronic device disclosed in this application may further include a first circuit board 400, and the first circuit board 400 may be disposed between the first structural member 270 and the plate-shaped structural member 280. The circuit board 400 is provided with a first electrical connector 410 . The ultrasonic vibrator 300 is provided with a second electrical connector 310 , and the first circuit board 400 is electrically connected to the ultrasonic vibrator 300 through the first electrical connector 410 and the second electrical connector 310 . The first structure member 270 may be provided with a first avoidance groove 220, the first avoidance groove 220 is communicated with the accommodating space 210, and at least a part of the second electrical connector 310 is located in the first avoidance groove 220. In this solution, the ultrasonic vibration At least part of the second electrical connector 310 of the connector 300 is hidden in the first escape groove 220 , so that the stacking thickness of the second electrical connector 310 and the housing 200 is small, thereby further reducing the thickness of the electronic device.

Further, the first structure member 270 may also be provided with a second avoidance groove 230 , the first avoidance groove 220 may be formed on the bottom wall of the second avoidance groove 230 , and at least a part of the first circuit board 400 is located in the second avoidance groove 230 . This solution reduces the stacking height of the first circuit board 400 and the first structural member 270, thereby reducing the thickness of the electronic device, further improving the lightness and thinness of the electronic device, and improving the user experience.

In the above embodiment, the first circuit board 400 may be a flexible circuit board, and the flexible circuit board can be bent, so as to facilitate the electrical connection of two electronic components that are not on the same plane. However, the flexible circuit board is relatively soft, and when the flexible circuit board is bent, it is easy to cause the connection between the flexible circuit board and the second electrical connector 310 to be pulled, thereby causing the connection between the second electrical connector 310 and the flexible circuit board to be broken. This further causes the second electrical connector 310 to fall off from the flexible circuit board.

Based on this, in another optional embodiment, the electronic device disclosed in the present application may further include a reinforcing plate 500 , and the reinforcing plate 500 may be disposed on the side of the first circuit board 400 away from the second electrical connector 310 , the reinforcing plates 500 may be distributed corresponding to the second electrical connectors 310 . In this solution, the reinforcing plate 500 can enhance the rigidity of the area of the first circuit board 400 opposite to the second electrical connector 310, thereby preventing bending, thereby preventing the second electrical connector 310 from falling off the flexible circuit board.

Optionally, the first electrical connector 410 and the second electrical connector 310 may be board-to-board connectors, and the first electrical connector 410 and the second electrical connector 310 may also be conductive elastic sheets. Of course, the first electrical connection The connector 410 and the second electrical connector 310 may also have other structures, which are not limited herein.

In another optional embodiment, the electronic device disclosed in this application may further include a first functional device 710, the first structural member 270 and the plate-shaped structural member 280 may enclose a first accommodating cavity, and the first functional device 710 may be disposed in the first accommodating cavity, and the ultrasonic vibrator 300 may be located between the display module 100 and the first functional device 710 . In this solution, the ultrasonic vibrator 300 is located between the display module 100 and the first functional device 710 , so that the first functional device 710 does not need to avoid the ultrasonic vibrator 300 , thereby making the structure of the first functional device 710 complete and not easily affected The function of the first functional device 710 . Optionally, the first functional device 710 may be a battery. Of course, the first functional device 710 may also be other functional devices, which is not limited herein.

In the above embodiment, the ultrasonic vibrator 300 may be a piezoelectric ceramic exciter, and the thickness of the piezoelectric ceramic exciter is relatively small, so that the overall thickness of the electronic device is relatively small.

In another optional embodiment, the electronic device disclosed in this application may further include a second functional device 720 and a third functional device 730, and the first structural member 270 and the plate-shaped structural member 280 may be enclosed to form a second accommodating device cavity. The display module 100 and the first structural member 270 can be enclosed to form an accommodating space 210, the second functional device 720 and the third functional device 730 can both be disposed in the second accommodating cavity, and the second functional device 720 and the third functional device There is an assembly gap 740 between 730 . The assembly gap 740 is communicated with the accommodating space 210 , at least two ultrasonic vibrators 300 are distributed at intervals, and each ultrasonic vibrator 300 is at least partially located in the assembly gap 740 . In this solution, the ultrasonic vibrator 300 can be at least partially hidden in the assembly gap 740 formed by the first functional device 710 and the second functional device 720, thereby reducing the size of the first functional device 710 and the second functional device 720 and the ultrasonic vibrator. 300 stack height, which in turn reduces the thickness of the electronic device. Optionally, the second functional device 720 and the third functional device 730 may be homogeneous batteries, so that the battery of the electronic device has a larger capacity, thereby improving the battery life of the electronic device. Of course, the second functional device 720 and the third functional device 730 can also be other functional devices, which are not limited herein.

In the above embodiment, the ultrasonic vibrator 300 may be a micro-vibration unit exciter, and the thickness of the micro-vibration unit exciter is relatively large, so the thickness of the entire electronic device is not affected by this method.

In the above embodiment, the ultrasonic vibrator 300 drives the display module 100 to vibrate, which easily causes the position of the ultrasonic vibrator 300 to change, thereby making the electronic device less reliable. Based on this, in another optional embodiment, the ultrasonic vibrator 300 may be provided with a first connection hole 320, the first structural member 270 may be provided with a second connection hole 240, and the connection member 800 may be connected through the first connection The hole 320 and the second connection hole 240 connect the ultrasonic vibrator 300 and the first structural member 270 .

In this solution, the ultrasonic vibrator 300 can be fixed on the first structural member 270 through the connecting member 800, so that the display module 100 is not likely to cause displacement of the ultrasonic vibrator 300 during the vibration process, thereby improving the reliability of the electronic device sex.

Optionally, the connector 800 may be a rivet, a bolt or other components, and of course, the connector 800 may also be of other structures, which are not limited herein.

In order to improve the installation accuracy of the ultrasonic vibrator 300 , in another optional embodiment, the ultrasonic vibrator 300 may be provided with a first positioning portion 330 , and the first structural member 270 may be provided with a second positioning portion 250 . The ultrasonic vibrator 300 is positioned and matched with the first structural member 270 through the first positioning portion 330 and the second positioning portion 250 . This solution can improve the installation accuracy of the ultrasonic vibrator 300, thereby improving the assembly accuracy of the electronic device.

Optionally, one of the first positioning portion 330 and the second positioning portion 250 may be a positioning protrusion, the other may be a positioning groove, and the positioning protrusion may be located in the positioning groove, thereby realizing an ultrasonic vibrator. 300 cooperates with the positioning of the first structural member 270 . Alternatively, both the first positioning portion 330 and the second positioning portion 250 are positioning holes, and positioning pins are inserted into the first positioning portion 330 and the second positioning portion 250 .

In order to further improve the sound performance of electronic equipment. In another optional embodiment, a side surface of the first structural member 270 away from the display module 100 may have a first installation area 201 , a second installation area 202 and a third installation area 203 . The second installation area 202 corresponds to at least a part of the central area, and the second installation area 202 may be located between the first installation area 201 and the third installation area 203 . At least two ultrasonic vibrators 300 may be located within the second mounting area 202 . That is, the first mounting area 201 and the third mounting area 203 are located at the edge positions of the electronic device, and the second mounting area 202 is located at the central area of the electronic device.

The electronic device disclosed in the present application may further include a second circuit board 610 and a fourth functional device 630 . The second circuit board 610 may be disposed in the first mounting area 201 and the fourth functional device 630 may be disposed in the third mounting area 203 . In this solution, the second circuit board 610 and the fourth functional device 630 are installed at the edge of the electronic device, and the fourth functional device 630 is installed in the central area of the electronic device, so that the installation position of the ultrasonic vibrator 300 is closer to the center of the electronic device. Therefore, it is not easy for the user's finger to press on the area corresponding to the ultrasonic vibrator 300 , so that it is not easy to affect the vibration and sound of the screen, thereby improving the sound-producing performance of the electronic device.

Optionally, the second circuit board 610 may be the main board of the electronic device, of course, the second circuit board 610 may also be the sub-board of the electronic device, which is not limited herein. The fourth functional device 630 may be an earphone socket assembly or a charging socket assembly of an electronic device, and the specific type of the fourth functional device 630 is not limited herein.

In another optional embodiment, the electronic device disclosed in this application may further include a third circuit board 430 , and both the ultrasonic vibrator 300 and the fourth functional device 630 may pass through the third circuit board 430 and the second circuit board 610 electrical connection. In this solution, the ultrasonic vibrator 300 and the fourth functional device 630 are electrically connected to the second circuit board 610 using the same circuit board, thereby simplifying the structure of the electronic device and reducing the manufacturing cost of the electronic device.

In another optional embodiment, a side surface of the first structural member 270 away from the display module 100 may further have a fourth installation area 204, and the fourth installation area 204 may be located between the first installation area 201 and the third installation area between the areas 203 , and the first installation area 201 can communicate with the third installation area 203 through the fourth installation area 204 . The fourth mounting area 204 may be arranged side by side with the second mounting area 202 .

The second circuit board 610 may be disposed in the first mounting area 201 and the fourth mounting area 204 , and the fourth functional device 630 may be disposed in the third mounting area 203 .

In this solution, both the first mounting area 201 and the fourth mounting area 204 can be used to mount the second circuit board 610, so that the size of the second circuit board 610 can be set larger, thereby effectively increasing the size of the second circuit board The effective installation area of the 610 can further increase the number of electronic components on the second circuit board 610, thereby enabling the electronic device to integrate more functionalities.

In another optional embodiment, the electronic device disclosed in this application may further include a fourth circuit board 440 , and the ultrasonic vibrator 300 may be electrically connected to the second circuit board 610 through the fourth circuit board 440 , and the fourth functional device 630 It may be electrically connected with the second circuit board 610 . In this solution, since the first mounting area 201 can communicate with the third mounting area 203 through the fourth mounting area 204, the fourth functional device 630 can be close to the second circuit board 610, and the fourth functional device 630 can be connected to the third mounting area 203. The two circuit boards 610 do not need to be additionally provided with other electrical connection components, thus making the structure of the electronic device simple.

In addition, the fourth circuit board 440 is only used for electrical connection between the ultrasonic vibrator 300 and the second circuit board 610 , so the structure of the fourth circuit board 440 can be relatively simple, thereby reducing the manufacturing cost of the electronic device.

The first circuit board 400 , the third circuit board 430 and the fourth circuit board 440 in the above embodiments are the same components in different embodiments.

Optionally, at least two separation protrusions 260 may be provided on a surface of the first structural member 270 on a side away from the display module 100 , and the at least two separation protrusions 260 separate the surface of the first structural member 270 into a first installation area. 201 , a second installation area 202 and a third installation area 203 . In this solution, the separating protrusions 260 can separate obvious installation areas on the first structural member 270 , so that the components of the electronic device are less likely to interfere during installation, thereby improving the assembly accuracy of the electronic device.

In another optional embodiment, the electronic device disclosed in the present application may further include a circuit board support 620, the circuit board support 620 is attached to the second circuit board 610, and the second circuit board 610 may be located on the circuit board support 620 and the first structural member 270 . In this solution, the circuit board bracket 620 can improve the rigidity of the second circuit board 610, thereby preventing the second circuit board 610 from being broken during disassembly or installation, thereby improving the safety and reliability of the electronic device.

In another optional embodiment, the fourth functional device 630 may be a speaker or a speaker. In this solution, the speaker or speaker can directly emit audible sound. At this time, the audible sound emitted by the speaker or speaker has no directivity, so the sound of the electronic device can be released. At this time, the electronic device can emit directional sound. Listening to the sound, non-directional audible sound can also be emitted, so that the audio playback effect of the electronic device can be improved.

The electronic devices disclosed in the embodiments of the present invention may be smart phones, tablet computers, e-book readers, wearable devices (such as smart watches), electronic game consoles, and other devices. The embodiments of the present invention do not limit the specific types of electronic devices.

The embodiments of the present application have been described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific embodiments, which are merely illustrative rather than restrictive. Under the inspiration of this application, without departing from the scope of protection of the purpose of this application and the claims, many forms can be made, which all fall within the protection of this application.

Claims

An electronic device comprising:

A display module (100), the display module (100) includes a display surface and a support surface distributed in opposite directions;

A casing (200), the casing (200) is connected with the display module (100), the casing (200) and the display module (100) enclose a accommodating space, the supporting surface towards the housing (200);

at least two ultrasonic vibrators (300), the at least two ultrasonic vibrators (300) are arranged in the accommodating space, and the at least two ultrasonic vibrators (300) are attached to the support surface, Each of the ultrasonic vibrators (300) is relatively distributed with a sub-area in the central area of the display surface;

In the case where the at least two ultrasonic vibrators (300) output at least two ultrasonic waves through at least two of the sub-regions, the at least two ultrasonic waves are demodulated to form target audible sound waves at the target location.
The electronic device according to claim 1, wherein the housing (200) comprises a first structural member (270) and a plate-like structural member (280), the plate-like structural member (280) and the display module The groups (100) are respectively disposed on both sides of the first structural member (270), and the display module (100) and the first structural member (270) are enclosed to form the accommodating space.
The electronic device according to claim 2, wherein the first structural member (270) is provided with a through hole (210) at a position corresponding to the sub-region, and the first structural member (270) is connected to the The display module (100) is enclosed to form the accommodating space, and at least parts of at least two of the ultrasonic vibrators (300) are located in the through hole (210).
The electronic device according to claim 3, wherein the number of the through holes (210) is at least two, at least two of the through holes (210) are arranged at intervals, and at least two of the ultrasonic vibrators (300) They are arranged in a one-to-one correspondence with at least two through holes (210).
The electronic device according to claim 3 or 4, wherein there is a gap between the inner side surface of the through hole (210) and the outer side surface of the ultrasonic vibrator (300).
The electronic device according to claim 2, wherein the electronic device further comprises a first circuit board (400), the first circuit board (400) being disposed on the first structural member (270) and the board Between the structural members (280), the first circuit board (400) is provided with a first electrical connector (410);

The first structural member (270) is provided with a first escape groove (220), the first escape groove (220) is communicated with the accommodation space, and the ultrasonic vibrator (300) is provided with a second electrical connection a connector (310), at least a part of the second electrical connector (310) is located in the first escape groove (220), and the first circuit board (400) and the ultrasonic vibrator (300) pass through The first electrical connector (410) and the second electrical connector (310) are electrically connected.
The electronic device according to claim 6, wherein the first structure member (270) is further provided with a second escape groove (230), and the first escape groove (220) is opened in the second escape groove ( 230), at least part of the first circuit board (400) is located in the second escape groove (230).
The electronic device according to claim 6 or 7, wherein the first circuit board (400) is a flexible circuit board, the electronic device further comprises a reinforcing plate (500), and the reinforcing plate (500) is provided with On the side of the first circuit board (400) facing away from the second electrical connector (310), the reinforcing plates (500) are distributed correspondingly to the second electrical connector (310).
The electronic device according to claim 2, wherein the electronic device further comprises a first functional device (710), and the first structural member (270) and the plate-shaped structural member (280) are enclosed to form a first functional device (710). an accommodating cavity, the first functional device (710) is arranged in the first accommodating cavity, and the ultrasonic vibrator (300) is located between the display module (100) and the first functional device (710) between.
The electronic device according to claim 2, wherein the electronic device further comprises a second functional device (720) and a third functional device (730), the first structural member (270) and the plate-shaped structural member (280) enclosing a second accommodating cavity, the second functional device (720) and the third functional device (730) are both disposed in the second accommodating cavity, and the second functional device (720) ) and the third functional device (730) with an assembly gap (740), the assembly gap (740) communicates with the accommodating space, the at least two ultrasonic vibrators (300) are spaced apart, and Each of the ultrasonic vibrators (300) is located at least partially within the assembly gap (740).
The electronic device according to claim 2, wherein the ultrasonic vibrator (300) is provided with a first connection hole (320), and the first structural member (270) is provided with a second connection hole (240) for connecting A piece (800) connects the ultrasonic vibrator (300) and the housing (200) through the first connection hole (320) and the second connection hole (240).
The electronic device according to claim 11, wherein the ultrasonic vibrator (300) is provided with a first positioning portion (330), and the first structural member (270) is provided with a second positioning portion (250), so The ultrasonic vibrator (300) is positioned and matched with the first structural member (270) through the first positioning portion (330) and the second positioning portion (250).
The electronic device according to claim 2, wherein a side surface of the first structural member (270) facing away from the display module (100) has a first mounting area (201) and a second mounting area (202) and a third installation area (203), the second installation area (202) corresponds to at least part of the central area, and the second installation area (202) is located between the first installation area (201) and the Between the third installation areas (203), at least two of the ultrasonic vibrators (300) are located in the second installation area (202);

The electronic device further includes a second circuit board (610) and a fourth functional device (630), the second circuit board (610) is disposed in the first mounting area (201), and the fourth functional device (630) 630) is arranged in the third installation area (203).
The electronic device according to claim 13, wherein the electronic device further comprises a third circuit board (430), and both the ultrasonic vibrator (300) and the fourth functional device (630) pass through the third circuit board (430) The circuit board (430) is electrically connected to the second circuit board (610).
The electronic device according to claim 13, wherein a side surface of the first structural member (270) (200) facing away from the display module (100) further has a fourth mounting area (204), the first Four installation areas (204) are located between the first installation area (201) and the third installation area (203), and the first installation area (201) passes through the fourth installation area (204) and the The third installation area (203) is communicated, and the fourth installation area (204) is arranged side by side with the second installation area (202);

The second circuit board (610) is arranged in the first installation area (201) and the fourth installation area (204), and the fourth functional device (630) is arranged in the third installation area ( 203).
The electronic device according to claim 15, wherein the electronic device further comprises a fourth circuit board (440), and the ultrasonic vibrator (300) communicates with the second circuit through the fourth circuit board (440) The board (610) is electrically connected, and the fourth functional device (630) is electrically connected with the second circuit board (610).
The electronic device according to claim 14, wherein at least two separation protrusions (260) are provided on a side surface of the first structural member (270) facing away from the display module (100), the at least two separation protrusions (260) A plurality of separating protrusions (260) separate the surface of the first structural member (270) into the first installation area (201), the second installation area (202) and the third installation area (203) .
The electronic device according to claim 14, wherein the electronic device further comprises a circuit board bracket (620), the circuit board bracket (620) is attached to the second circuit board (610), the first Two circuit boards (610) are located between the circuit board support (620) and the first structural member (200).
The electronic device according to claim 13, wherein the fourth functional device (630) is a speaker or a horn.
The electronic device according to claim 1, wherein the ultrasonic vibrator (300) is a piezoelectric ceramic exciter; or,

The ultrasonic vibrator (300) is a micro-vibration unit exciter.