CN210670544U

CN210670544U - Screen vibration sound production device and electronic equipment

Info

Publication number: CN210670544U
Application number: CN201921886698.6U
Authority: CN
Inventors: 季春炜; 熊蕾; 刘建伟
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2019-11-04
Filing date: 2019-11-04
Publication date: 2020-06-02
Anticipated expiration: 2029-11-04

Abstract

The utility model provides a screen vibration sound generating mechanism and electronic equipment relates to mobile terminal technical field. The screen vibration sound production device comprises a vibration assembly and a driving assembly, wherein the vibration assembly comprises a screen, a fixing plate and a cylindrical support column, the screen and the fixing plate are oppositely arranged, and two ends of the cylindrical support column are respectively connected with the screen and the fixing plate; the driving assembly is positioned in the cylindrical supporting column and used for controlling the screen to vibrate and sound. Through set up drive assembly between screen and fixed plate, drive assembly can control the screen vibration sound production. The tube-shape support column can provide certain damping to the screen, restrain the regional vibration with the tube-shape support column contact on the screen, drive assembly is located inside the tube-shape support column, the tube-shape support column can play the effect of isolation to the propagation of vibration, weakens the vibration that is located the regional outside the tube-shape support column on the screen, and the regional sound production that still can normally vibrate that is located the tube-shape support column on the screen to avoid the vibration of too big region on the screen, make the sound more concentrated.

Description

Screen vibration sound production device and electronic equipment

Technical Field

The present disclosure relates to the field of mobile terminal technologies, and in particular, to a screen vibration sound generating apparatus and an electronic device.

Background

Sound generators are important electroacoustic transducing elements in electronic devices for converting current signals into sound.

On electronic equipment such as a mobile phone, a relatively common sound generating device adopts the principle that a vibrating diaphragm pushes air to vibrate and generate sound. However, with the rapid development of electronic products, a sound generating device with another structure, namely a screen vibration sound generating device, is also available on electronic equipment. The screen vibration sound production device realizes sound production by controlling the screen to vibrate. However, compared with a traditional earphone, the current screen vibration sound production device has poor privacy.

Disclosure of Invention

The embodiment of the disclosure provides a screen vibration sound production device and an electronic device, which can improve privacy.

The technical scheme is as follows:

in one aspect, an embodiment of the present disclosure provides a screen vibration sound generating apparatus, including:

the vibration assembly comprises a screen, a fixed plate and a cylindrical support column, the screen and the fixed plate are oppositely arranged, the cylindrical support column is positioned between the screen and the fixed plate, and two ends of the cylindrical support column are respectively connected with the screen and the fixed plate;

and the driving component is used for controlling the screen to vibrate and sound, and is positioned in the cylindrical supporting column.

In one possible implementation manner of the embodiment of the present disclosure, the cross section of the cylindrical support column is circular or polygonal.

In one possible implementation of the embodiment of the present disclosure, the cylindrical support column is a rubber structural member.

In one possible implementation of the embodiment of the present disclosure, the driving assembly includes a coil and a magnetic member, an axis of the coil is perpendicular to the screen, one of the coil and the magnetic member is located on the screen, and the other of the coil and the magnetic member is located on the fixing plate, the magnetic member includes at least a first portion located inside the coil and a second portion located outside the coil in a direction perpendicular to the axis, and a magnetic field passing through the coil is provided between the first portion and the second portion.

In one possible implementation of the embodiment of the present disclosure, the first portion includes a plurality of first magnets distributed around the axis, the second portion includes a plurality of second magnets distributed around the axis, a first magnetic pole of the first magnet faces the second magnet, a second magnetic pole of the second magnet faces the first magnet, one of the first magnetic pole and the second magnetic pole is an S pole, and the other of the first magnetic pole and the second magnetic pole is an N pole.

In a possible implementation manner of the embodiment of the present disclosure, the magnetic member further includes a mounting seat, the mounting seat includes a first boss and a second boss surrounding the first boss in an annular shape, the first boss has an outer side wall opposite to the second boss, the second boss has an inner side wall opposite to the first boss, the plurality of first magnets are mounted on the outer side wall, and the plurality of second magnets are located on the inner side wall.

In a possible implementation manner of the embodiment of the present disclosure, the outer sidewall has a plurality of first slots for mounting the plurality of first magnets, and the inner sidewall has a plurality of second slots for mounting the plurality of second magnets.

In one possible implementation of the embodiment of the present disclosure, the first magnet is a tile-shaped magnet or a rectangular parallelepiped-shaped magnet, and the second magnet is a tile-shaped magnet or a rectangular parallelepiped-shaped magnet.

In one possible implementation of the disclosed embodiment, an orthographic projection of the coil on a plane perpendicular to the axis is circular or polygonal.

In one possible implementation of the embodiment of the present disclosure, one of the coil and the magnetic member is bonded to the screen.

In one possible implementation of the embodiment of the present disclosure, the driving component includes a piezoelectric ceramic plate or a linear vibrator.

On the other hand, the embodiment of the present disclosure further provides an electronic device, which includes any one of the screen vibration sound generating devices described in the previous aspect.

In a possible implementation manner of the embodiment of the present disclosure, the electronic device includes a frame for defining an internal space of the electronic device, the screen vibration sound generating device is located in the internal space, and the fixing plate is connected to the frame.

The beneficial effects brought by the technical scheme provided by the embodiment of the disclosure at least comprise: through set up drive assembly between screen and fixed plate, drive assembly can control the screen vibration sound production. Through set up the tube-shape support column between screen and fixed plate, drive assembly is located the tube-shape support column, the both ends of tube-shape support column are connected with screen and fixed plate respectively, consequently, the tube-shape support column can provide certain damping to the screen, the regional vibration with the contact of tube-shape support column on the suppression screen, because drive assembly is located inside the tube-shape support column, consequently, the tube-shape support column can play the effect of isolation to the propagation of vibration, weaken the vibration that is located the region outside the tube-shape support column on the screen, and the region that is located the tube-shape support column on the screen still can normally vibrate the sound production, thereby avoid the vibration of too big region on the screen, make the sound more concentrated, the.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.

Fig. 1 is a partial structural schematic view of a screen vibration sound generating device in the related art;

fig. 2 is a schematic partial structure diagram of a screen vibration sound generating device provided in an embodiment of the present disclosure;

fig. 3 is a partial schematic structural view of another screen vibration sound generating device provided in the embodiment of the present disclosure;

fig. 4 is a schematic structural diagram of a magnetic member according to an embodiment of the present disclosure;

fig. 5 is a schematic partial structure diagram of an electronic device according to an embodiment of the present disclosure.

Detailed Description

To make the objects, technical solutions and advantages of the present disclosure more apparent, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

Fig. 1 is a partial structural schematic diagram of a screen vibration sound generating device in the related art. Screen vibration sound generators are generally provided in various electronic devices, such as mobile phones. As shown in fig. 1, the screen vibration sound generating device includes a vibration assembly 10 and a driving assembly 20, and the vibration assembly 10 includes a screen 11 and a fixing plate 12 which are oppositely disposed.

The driving assembly 20 is located between the screen 11 and the fixing plate 12, and the driving assembly 20 is in contact with the screen 11. The driving assembly 20 may control the screen 11 to vibrate and sound. Taking a mobile phone as an example, when the driving component 20 controls the screen 11 to vibrate, the driving component may cause the vibration of a larger area on the screen 11, or even cause the vibration of the whole screen 11, or even the vibration of the whole mobile phone, which causes the emitted sound to be too divergent and poor in directivity, so that people around the user may hear the emitted sound, and the privacy is poor.

Fig. 2 is a schematic partial structure diagram of a screen vibration sound generating device according to an embodiment of the present disclosure. As shown in fig. 2, the screen vibration sound generating apparatus includes a vibration assembly 10 and a driving assembly 20.

The vibration assembly 10 includes a screen 11, a fixing plate 12 and a cylindrical support column 13, the screen 11 and the fixing plate 12 are oppositely arranged, the cylindrical support column 13 is located between the screen 11 and the fixing plate 12, and two ends of the cylindrical support column 13 are respectively connected with the screen 11 and the fixing plate 12. The drive assembly 20 is located within the cylindrical support column 13. The driving assembly 20 is used for controlling the screen 11 to vibrate and sound.

Exemplarily, the screen 11 may be an OLED (Organic Light-Emitting Diode) display screen. The OLED display panel has certain flexibility, and can well vibrate under the action of the driving assembly 20 without being easily damaged. The OLED Display is only an example of the screen 11 and is not intended to limit the screen 11, and in other possible implementations, the screen 11 may also be other types of Display screens, such as an LCD (Liquid Crystal Display).

Through set up drive assembly between screen and fixed plate, drive assembly can control the screen vibration sound production. Through set up the tube-shape support column between screen and fixed plate, drive assembly is located the tube-shape support column, the both ends of tube-shape support column are connected with screen and fixed plate respectively, consequently, the tube-shape support column can provide certain damping to the screen, the regional vibration with the contact of tube-shape support column on the suppression screen, because drive assembly is located inside the tube-shape support column, consequently, the tube-shape support column can play the effect of isolation to the propagation of vibration, weaken the vibration that is located the region outside the tube-shape support column on the screen, and the region that is located the tube-shape support column on the screen still can normally vibrate the sound production, thereby avoid the vibration of too big region on the screen, make the sound more concentrated, the.

Alternatively, the cylindrical support column 13 may be a rubber structural member. The rubber structural part has certain flexibility, and the hardness of the rubber is easy to control. The greater the hardness of the cylindrical support columns 13, the greater the ability to isolate vibrations, and the more the vibrations in the region of the screen 11 located outside the cylindrical support columns 13 can be reduced, but vibrations in the region of the screen 11 located inside the cylindrical support columns 13 can also be affected, and sound production can also be affected. By selecting rubber with proper hardness to manufacture the cylindrical supporting column 13, the cylindrical supporting column 13 can be guaranteed to have a good vibration isolation effect, and meanwhile, the area, located within the cylindrical supporting column 13, on the screen 11 can normally vibrate. Illustratively, the cylindrical supporting column 13 with proper hardness can be selected through testing. The size of the vibration region on the screen 11 can be controlled by changing the size of the area surrounded by the cylindrical supporting columns 13 on the screen 11.

Illustratively, the cylindrical support columns 13 may be thermoplastic polyurethane elastomer rubber Thermoplastic Polyurethanes (TPU) structural members. The rubber has wide hardness range, products with different hardness can be obtained by changing the proportion of each reaction component in the process of preparing TPU, and the products still keep good elasticity and wear resistance along with the increase of the hardness.

Alternatively, the cylindrical support column 13 may be circular or polygonal in cross-section. In this embodiment, the cross section of the cylindrical support column 13 is circular, the area defined by the circular cylindrical support column 13 on the screen 11 is circular, the circular area is more symmetrical when vibrating, and the sound production effect is better.

In one possible implementation, the driving assembly 20 may include a piezoelectric ceramic plate or a linear vibrator. The piezoelectric ceramic piece is an electronic element and comprises two electrodes and a piezoelectric ceramic medium clamped between the two electrodes. When alternating-current audio signals are connected to the two electrodes, the piezoelectric ceramic sheet can vibrate at different intensities and frequencies according to signals with different sizes and frequencies, and therefore the screen can be driven to vibrate and sound. The linear vibrator, also called micro-vibration unit, has a principle similar to that of a linear motor, and generates a force field to vibrate by utilizing the interaction between an electric field and a magnetic field, thereby driving a screen to vibrate and sound.

Fig. 3 is a partial structural schematic diagram of another screen vibration sound generating device provided in the embodiment of the present disclosure. As shown in fig. 3, the driving assembly 20 of the screen vibration sound generating device may include a coil 21 and a magnetic member 22. The axis m of the coil 21 is perpendicular to the screen 11, the coil 21 is positioned on the screen 11, and the magnetic member 22 is positioned on the fixing plate 12. The magnetic member 22 includes at least a first portion 221 located inside the coil 21 and a second portion 222 located outside the coil 21 in a direction perpendicular to the axis m, with a magnetic field passing through the coil 21 between the first portion 221 and the second portion 222. In fig. 3, the magnetic field between the first portion 221 and the second portion 222 is approximately perpendicular to the axis m of the coil 21.

In another possible implementation, the magnetic element 22 may be located on the screen 11, and the coil 21 may be located on the fixing plate 12.

By arranging the coil and the magnetic piece, the first part of the magnetic piece is positioned in the coil, the second part of the magnetic piece is positioned outside the coil in the direction perpendicular to the axis of the coil, a magnetic field penetrating through the coil is arranged between the first part and the second part, so when alternating current is introduced into the coil, the coil can excite the magnetic field, the magnetic field excited by the coil interacts with the magnetic field of the magnetic piece, and the coil and the magnetic piece generate relative reciprocating motion.

The number of turns of the coil 21 and the magnetic induction intensity of the magnetic field affect the vibration of the screen 11, and the number of turns of the coil 21 and the magnetic induction intensity of the magnetic field are all in positive correlation with the amplitude of the screen 11 under the condition that the alternating current is the same. Therefore, the sound production of the screen 11 can meet the design requirements by selecting the coil 21 with proper turns and the magnetic member 22 with proper magnetic induction intensity, and the selection can be specifically carried out by adopting a test mode. In addition, the intensity of the alternating current also affects the amplitude of the screen 11. The frequency of the alternating current affects the frequency at which the screen 11 vibrates. In the case where the structure of the screen vibration sound generating apparatus is determined, the amplitude and vibration frequency of the screen 11 can be changed by changing the intensity and frequency of the alternating current supplied to the coil 21, thereby changing the loudness and frequency of the sound.

Alternatively, the orthographic projection of the coil 21 on a plane perpendicular to the axis m may be circular or polygonal. In the present embodiment, the orthogonal projection of the coil 21 on the plane perpendicular to the axis m is circular.

In the screen vibration sound generating device shown in fig. 3, the coil 21 is located on the screen 11, and the coil 21 can be bonded to the screen 11, so that the mounting by bonding is simpler. If the magnetic member 22 is located on the screen 11, the magnetic member 22 may be connected to the screen 11 by adhesion.

As shown in fig. 3, the driving assembly 20 may further include a coil holder 201, and the coil 21 may be wound on the coil holder 201. The coil holder 201 may facilitate mounting of the coil 21 to the screen 11 or the fixing plate 12. The coil base 201 may be cylindrical, and both ends of the coil base 201 may be open, or one end of the coil base 201 may be open and the other end may be closed. As shown in fig. 3, one end of the coil holder 201 is closed, and the closed end of the coil holder 201 is attached to the screen 11, so that the contact area between the coil holder 201 and the screen 11 can be increased, and the connection between the coil holder 201 and the screen 11 is firmer. The coil holder 201 may be bonded to the screen 11. Alternatively, screws may be used to connect the coil holder 201 to the screen.

The orthographic projection of magnetic member 22 on a plane perpendicular to axis m may also be circular or polygonal. In this embodiment, the coil 21 is located on the screen 11, the magnetic member 22 is located on the fixing plate 12, and the cylindrical supporting column 13, the coil 21, and the magnetic member 22 may be coaxially arranged, so that the vibration area defined on the screen 11 is circular, and the acting force of the coil 21 on the vibration area of the screen 11 is more symmetrical and uniform, so that the sound production effect is better.

Fig. 4 is a schematic structural diagram of a magnetic member according to an embodiment of the present disclosure. As shown in fig. 4, the first part 221 may include a plurality of first magnets 2221 distributed about the axis m, and the second part 222 may include a plurality of second magnets 2222 distributed about the axis m, a first magnetic pole of the first magnets 2221 facing the second magnets 2222, and a second magnetic pole of the second magnets 2222 facing the first magnets 2221. Wherein one of the first magnetic pole and the second magnetic pole is an S pole, and the other of the first magnetic pole and the second magnetic pole is an N pole. By arranging the first and

second magnets

2221 and 2222 in this manner, a magnetic field can be formed between the first and

second portions

221 and 222 approximately in the radial direction of the coil 21, enabling the coil 21 to be moved in the axial direction of the coil 21 by the action of ampere force when the coil 21 is energized. The arrangement of the first and

second magnets

2221 and 2222 makes the coil 21 more balanced and move more smoothly when the coil 21 is energized, and the coil 21 can move back and forth along its axis smoothly by inputting ac power to drive the screen 11 to vibrate and generate sound.

The present disclosure does not limit the specific polarities of the first and second magnetic poles. The first magnetic pole is an S pole and the second magnetic pole is an N pole, or the first magnetic pole is an N pole and the second magnetic pole is an S pole. The first magnetic pole and the second magnetic pole have opposite polarities. As an example, in fig. 4, a surface of the first magnetic body 2221 facing the second magnetic body 2222 is an N pole, and a surface of the second magnetic body 2222 facing the first magnetic body 2221 is an S pole.

The plurality of first magnets 2221 may be distributed at equal angular intervals, and the plurality of second magnets 2222 may also be distributed at equal angular intervals. The number of first magnets 2221 and the number of second magnets 2222 may be the same or different, and the size of a single first magnet 2221 and the size of a single second magnet 2222 may be the same or different.

Alternatively, the first magnetic body 2221 is a tile-shaped magnet or a rectangular parallelepiped-shaped magnet, and the second magnetic body 2222 is a tile-shaped magnet or a rectangular parallelepiped-shaped magnet. For example, as shown in fig. 4, the first and

second magnets

2221 and 2222 are tile-shaped magnets having an arc such that the magnetic field between the first and

second portions

221 and 222 can be in a radial direction of the coil 21. The radius of the first magnet 2221 may be the same as the radius of the circumference where the plurality of first magnets 2221 are located, and the radius of the second magnet 2222 may be the same as the radius of the circumference where the plurality of second magnets 2222 are located.

As shown in fig. 4, the magnetic member 22 may further include a mount 223. The mount 223 includes a first boss 2231 and a second boss 2232 annularly surrounding the first boss 2231, the first boss 2231 having an outer side wall opposite to the second boss 2232, the second boss 2232 having an inner side wall opposite to the first boss 2231, a plurality of first magnets 2221 mounted on the outer side wall of the first boss 2231, and a plurality of second magnets 2222 located on the inner side wall of the second boss 2232. The mount 223 may facilitate the mounting of the first and

second magnets

2221 and 2222.

Alternatively, the mounting seat 223 may be a metal or non-metal structure.

As shown in fig. 4, the first boss 2231 may have a plurality of first slots 223a on an outer side wall thereof for mounting the plurality of first magnets 2221, and the second boss 2232 may have a plurality of second slots 223b on an inner side wall thereof for mounting the plurality of second magnets 2222. Through setting up first slot 223a, can directly install first magnet 2221 inserts in first slot 223a, through setting up second slot 223b, can directly install second magnet 2222 inserts in second slot 223b, simple to operate is difficult to not hard up.

For example, in the mount 223 shown in fig. 4, the first boss 2231 has a cylindrical shape, and the second boss 2232 has a cylindrical shape. In another possible implementation, the first bosses 2231 may have a prism shape, and the second bosses 2232 may have a polygonal cross-section, such as a regular hexagon.

Fig. 5 is a schematic partial structure diagram of an electronic device according to an embodiment of the present disclosure. As shown in fig. 5, the electronic device includes the screen vibration sound generating apparatus shown in fig. 2 or 3. The electronic device may be, but is not limited to, a mobile phone, a tablet computer.

Through set up drive assembly between screen and fixed plate, drive assembly can control the screen vibration sound production. Through set up the tube-shape support column between screen and fixed plate, drive assembly is located the tube-shape support column, and the both ends of tube-shape support column are connected with screen and fixed plate respectively, therefore the tube-shape support column can provide certain damping to the screen, and the isolation vibration for the region that lies in the tube-shape support column on the screen can normally vibrate the sound production, weakens the vibration that lies in the region outside the tube-shape support column, avoids the vibration of too big region on the screen, makes the sound more concentrated.

As shown in fig. 5, the electronic device may include a bezel 30, the bezel 30 may define an inner space of the electronic device, the screen vibration sound generating device may be located in the inner space, and the fixing plate 12 may be connected to the bezel 30. Conventional electronic devices, such as mobile phones, tablet computers, and the like, generally include a bezel 30, and an inner space can accommodate various components including a screen-vibrating sound generating device. The fixing plate 12 is coupled to the bezel 30 so that the driving assembly 20 is sandwiched between the screen 11 and the fixing plate 12, enabling the screen 11 to normally vibrate. The fastening plate 12 and the frame 30 may be an integral structure.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A screen vibration sound production device is characterized by comprising

The vibration assembly (10) comprises a screen (11), a fixing plate (12) and a cylindrical support column (13), the screen (11) and the fixing plate (12) are oppositely arranged, the cylindrical support column (13) is located between the screen (11) and the fixing plate (12), and two ends of the cylindrical support column (13) are respectively connected with the screen (11) and the fixing plate (12);

and the driving component (20) is used for controlling the screen (11) to vibrate and sound, and the driving component (20) is positioned in the cylindrical supporting column (13).

2. A screen vibration sound generating device as defined in claim 1, wherein the cylindrical support column (13) is circular or polygonal in cross-section.

3. A screen vibration sound generating device according to claim 1, wherein the cylindrical support column (13) is a rubber structural member.

4. A screen vibration sound generating device according to any one of claims 1 to 3, wherein said driving assembly (20) comprises a coil (21) and a magnetic member (22), an axis (m) of said coil (21) being perpendicular to said screen (11), one of said coil (21) and said magnetic member (22) being located on said screen (11), the other of said coil (21) and said magnetic member (22) being located on said fixing plate (12), said magnetic member (22) comprising at least a first portion (221) located inside said coil (21) and a second portion (222) located outside said coil (21) in a direction perpendicular to said axis (m), a magnetic field passing through said coil (21) being provided between said first portion (221) and said second portion (222).

5. The screen vibration sound generating device according to claim 4, wherein the first part (221) includes a plurality of first magnets (2221) distributed around the axis (m), the second part (222) includes a plurality of second magnets (2222) distributed around the axis (m), a first magnetic pole of the first magnets (2221) faces the second magnets (2222), a second magnetic pole of the second magnets (2222) faces the first magnets (2221), one of the first magnetic pole and the second magnetic pole is an S pole, and the other of the first magnetic pole and the second magnetic pole is an N pole.

6. The screen vibrating sound device of claim 5, wherein the magnetic member (22) further comprises a mount (223), the mount (223) comprising a first boss (2231) and a second boss (2232) annularly surrounding the first boss (2231), the first boss (2231) having an outer side wall opposite the second boss (2232), the second boss (2232) having an inner side wall opposite the first boss (2231), the plurality of first magnets (2221) being mounted on the outer side wall, the plurality of second magnets (2222) being located on the inner side wall.

7. The screen vibration sound generating apparatus according to claim 6, wherein the outer side wall has a plurality of first slots (223a) for mounting the plurality of first magnets (2221), and the inner side wall has a plurality of second slots (223b) for mounting the plurality of second magnets (2222).

8. The screen vibration sound generating apparatus according to claim 5, wherein the first magnet (2221) is a tile-shaped magnet or a rectangular parallelepiped-shaped magnet, and the second magnet (2222) is a tile-shaped magnet or a rectangular parallelepiped-shaped magnet.

9. The screen vibration sound production device according to claim 4, wherein an orthographic projection of the coil (21) on a plane perpendicular to the axis (m) is circular or polygonal.

10. A screen vibration sound generating device according to claim 4, wherein one of said coil (21) and said magnetic member (22) is bonded to said screen (11).

11. A screen vibrating sound emitting device according to any one of claims 1 to 3, wherein the driving assembly (20) comprises a piezoelectric ceramic plate or a linear vibrator.

12. An electronic device comprising the screen vibration sound emission device according to any one of claims 1 to 11.

13. The electronic device of claim 12, wherein the electronic device comprises a bezel (30) defining an interior space of the electronic device, wherein the screen vibration sound generating device is located in the interior space, and wherein the fixing plate (12) is connected to the bezel (30).