Electronic device

Abstract

The present application relates to the technical field of electronic products. Disclosed is an electronic device. The electronic device comprises a screen, a frame body, and a loudspeaker; the loudspeaker comprises a first part and a second part, the first part comprises a first diaphragm, and the second part comprises a second diaphragm; the arrangement direction of the first part and the second part is parallel to the screen; a first front cavity of the first diaphragm faces the screen, and the first front cavity is communicated with a first sound outlet hole; a second front cavity of the second diaphragm is away from the screen, and the second front cavity is communicated with a second sound outlet hole; the first sound outlet hole is formed in a gap position between the frame body and the screen, and the second sound outlet hole is formed in the frame body; in a first state, the first diaphragm and the second diaphragm vibrate in the same phase; and in a second state, the first diaphragm and the second diaphragm vibrate in the opposite phases.

Description

electronic devices

[0001] Cross-references

[0002] This application claims priority to the Chinese patent application filed with the China Patent Office on August 7, 2023, with application number 202310987978.0 and invention name “Electronic Device”. The entire contents of the application are incorporated by reference into this application. Technical Field

[0003] The present application belongs to the technical field of electronic products, and specifically relates to an electronic device. Background Art

[0004] The call function of an electronic device is its basic function. When a user holds the device to make a call, the sound of the electronic device will leak into the external environment, resulting in the leakage of the user's privacy.

[0005] To improve earpiece sound leakage, the current approach is to create a leak in the back of the earpiece, which is then superimposed in anti-phase with the sound waves from the front of the earpiece. However, the electronic devices provided by this solution cannot effectively account for the sound emission modes in different scenarios, and the driving method is not flexible enough.

[0006] Summary of the Invention

[0007] The purpose of the embodiments of the present application is to provide an electronic device that can solve the problem that electronic devices in related technologies cannot well take into account the sound emission methods of different scenarios and the driving method is not flexible enough when achieving sound leakage prevention.

[0008] In order to solve the above technical problems, this application is implemented as follows:

[0009] In a first aspect, an embodiment of the present application provides an electronic device, comprising: a screen, a frame, and a speaker, wherein the speaker comprises a first portion and a second portion, the first portion comprising a first diaphragm, and the second portion comprising a second diaphragm; the first portion and the second portion are arranged parallel to the screen;

[0010] The first front cavity of the first diaphragm faces the screen and is connected to the first sound outlet. The second front cavity of the second diaphragm faces away from the screen and is connected to the second sound outlet.

[0011] The first sound outlet is formed in the gap between the frame and the screen, and the second sound outlet is set on the frame;

[0012] In the first state, the first diaphragm and the second diaphragm vibrate in phase; in the second state, the first diaphragm and the second diaphragm vibrate in anti-phase.

[0013] In some embodiments, the second portion further includes: a third diaphragm, the third diaphragm being stacked with the second diaphragm in a thickness direction of the electronic device;

[0014] The third front cavity of the third diaphragm faces the screen, and the third front cavity is connected to the first sound outlet.

[0015] In some embodiments, in the third state, at least two of the first diaphragm, the second diaphragm, and the third diaphragm vibrate in phase;

[0016] In the fourth state, one of the first diaphragm, the second diaphragm, and the third diaphragm vibrates;

[0017] In another state, any one of the first diaphragm, the second diaphragm and the third diaphragm does not work, and the other two vibrate in anti-phase.

[0018] In an embodiment of the present application, an electronic device includes: a screen, a frame and a speaker, the speaker includes a first part and a second part, the first part includes a first diaphragm, and the second part includes a second diaphragm; the arrangement direction of the first part and the second part is parallel to the screen; wherein, the first front cavity of the first diaphragm faces the screen, and the first front cavity is connected to the first sound outlet; the second front cavity of the second diaphragm is away from the screen, and the second front cavity is connected to the second sound outlet; the first sound outlet is formed in the gap between the frame and the screen, and the second sound outlet is arranged at the top of the frame; in the first state, the first diaphragm and the second diaphragm vibrate in phase, which can improve the effect of the speaker when playing externally; in the second state, the first diaphragm and the second diaphragm vibrate in anti-phase, which can achieve the effect of preventing sound leakage during calls. In this way, the speaker can emit different sound waves according to the usage scenario and sound requirements of the electronic device. For example, when the electronic device is in the external speaker mode, the first diaphragm and the second diaphragm can be in the first state to achieve the best external speaker effect; when the electronic device is in the earpiece mode, the first diaphragm and the second diaphragm can be in the second state to avoid sound leakage during calls. This can take into account the sound generation methods of different scenarios and the driving method is more flexible. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] FIG1 is a schematic diagram showing one of two diaphragms placed front and back according to an embodiment of the present invention;

[0020] FIG2 is a second schematic diagram showing two diaphragms placed front and back according to an embodiment of the present invention;

[0021] FIG3 shows a schematic structural diagram of an electronic device according to an embodiment of the present invention;

[0022] FIG4 shows a second structural diagram of an electronic device according to an embodiment of the present invention;

[0023] FIG5 is a third schematic structural diagram of an electronic device according to an embodiment of the present invention;

[0024] FIG6 shows a fourth structural diagram of an electronic device according to an embodiment of the present invention;

[0025] FIG7 shows a fifth structural diagram of an electronic device according to an embodiment of the present invention;

[0026] FIG8 shows a sixth structural diagram of an electronic device according to an embodiment of the present invention;

[0027] FIG9 shows a seventh structural diagram of an electronic device according to an embodiment of the present invention;

[0028] FIG10 is a schematic structural diagram of a mainboard bracket according to an embodiment of the present invention;

[0029] FIG11 shows a second structural diagram of a motherboard bracket according to an embodiment of the present invention;

[0030] FIG12 shows one of the schematic diagrams of placement of three diaphragms according to an embodiment of the present invention;

[0031] FIG13 shows a second schematic diagram of the placement of three diaphragms according to an embodiment of the present invention;

[0032] FIG14 shows an eighth structural diagram of an electronic device according to an embodiment of the present invention.

[0033] FIG15 is a ninth structural diagram of an electronic device according to an embodiment of the present invention;

[0034] FIG16 shows one of the schematic diagrams of placement of four diaphragms according to an embodiment of the present invention;

[0035] FIG17 shows a second schematic diagram of the placement of four diaphragms according to an embodiment of the present invention;

[0036] FIG18 shows a third structural diagram of a mainboard bracket according to an embodiment of the present invention;

[0037] FIG19 is a tenth structural diagram of an electronic device according to an embodiment of the present invention;

[0038] FIG20 is a schematic structural diagram of an electronic device according to an embodiment of the present invention;

[0039] FIG. 21 shows a twelfth structural diagram of an electronic device according to an embodiment of the present invention.

[0040] Explanation of the accompanying drawings: 1-screen; 2-frame; 3-back cover; 4-mainboard bracket; 41-sound guide channel; 42-mounting hole; a1-first diaphragm; a2-second diaphragm; a3-third diaphragm; a4-fourth diaphragm; a11-first front cavity; a12-first rear cavity; a21-second front cavity; a22-second rear cavity; a31-third front cavity; a41-fourth front cavity; b1-first sound outlet; b2-second sound outlet; b3-third sound outlet; 5-mainboard; 6-foam; 7-cover. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0042] The terms "first," "second," and the like in the specification and claims of this application are used to distinguish similar objects and are not used to describe a particular order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate so that the embodiments of this application can be implemented in an order other than those illustrated or described herein. In addition, the term "and / or" in the specification and claims refers to at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0043] The control method provided in the embodiment of the present application is described in detail below through specific embodiments and their application scenarios in conjunction with the accompanying drawings.

[0044] Please refer to Figures 1 to 11. An embodiment of the present invention provides an electronic device, including: a screen 1, a frame 2 and a speaker, the speaker including a first part and a second part, the first part including a first diaphragm a1, and the second part including a second diaphragm a2; the arrangement direction of the first part and the second part is parallel to the screen 1; wherein, the first front cavity a11 of the first diaphragm a1 faces the screen 1, and the first front cavity a11 is connected to the first sound outlet b1; the second front cavity a21 of the second diaphragm a2 faces away from the screen 1, and the second front cavity a21 is connected to the second sound outlet b2.

[0045] As shown in Figure 3, the first sound hole b1 is formed in the gap between the frame 2 and the screen 1, and the second sound hole b2 is set on the frame 2; in the first state, the first diaphragm a1 and the second diaphragm a2 vibrate in phase; in the second state, the first diaphragm a1 and the second diaphragm a2 vibrate in anti-phase.

[0046] For example, referring to Figures 1 to 5, Figure 4 is a schematic diagram of the interior with the screen 1 hidden, and Figure 5 is a schematic diagram of the interior with the back cover 3 hidden. The first diaphragm a1 is placed in a forward orientation, and the second diaphragm a2 is placed in a reverse orientation. The first diaphragm a1 and the second diaphragm a2 are placed one in front of the other. The diaphragm with its front cavity facing the screen 1 is called a forward orientation, and the diaphragm with its front cavity facing away from the screen 1 and toward the back cover 3 is called a reverse orientation.

[0047] Specifically, the loudspeaker further includes: a first voice coil connected to a first diaphragm a1, a second voice coil connected to a second diaphragm a2, a first magnetic circuit assembly corresponding to the first diaphragm a1, and a second magnetic circuit assembly corresponding to the second diaphragm a2; wherein the magnetic circuit assembly provides a magnetic field for the energized voice coil, thereby driving the voice coil to move. When the magnetic circuit assembly drives the first and second voice coils to vibrate, it can drive the first and second diaphragms a1 and a2 to vibrate in phase or in opposite directions, thereby achieving sound wave transmission. Specifically, when the first and second magnetic circuit assemblies input currents in phase, the first diaphragm a1 and the second diaphragm a2 vibrate in phase; when the first and second magnetic circuit assemblies input currents in opposite phases, the first diaphragm a1 and the second diaphragm a2 vibrate in opposite phases.

[0048] It should be pointed out that since the matching structure between the voice coil, diaphragm and magnetic circuit components belongs to conventional structure, it is not introduced in detail here.

[0049] In the above embodiment, the speaker can emit different sound waves according to the usage scenario and sound requirements of the electronic device. For example, when the electronic device is in the external speaker mode, the first diaphragm a1 and the second diaphragm a2 can be in the first state to achieve a better external speaker effect; when the electronic device is in the earpiece mode, the first diaphragm a1 and the second diaphragm a2 can be in the second state to cancel each other out during air propagation to avoid sound leakage during calls. This can take into account the sound generation methods of different scenarios and the driving method is more flexible.

[0050] Referring to Figures 6, 10 and 11, in one embodiment, the electronic device also includes: a mainboard bracket 4, the mainboard bracket 4 is provided with a mounting hole 42, and the second diaphragm a2 is arranged in the mounting hole 42; a sound guide channel 41 is opened on the mainboard bracket 4, and the sound guide channel 41 connects the second sound outlet hole b2 and the second front cavity a21 of the second diaphragm a2.

[0051] In this embodiment, the mainboard bracket 4 is used to support the mainboard 5. By setting a sound guide channel 41 and a mounting hole 42 on the mainboard bracket 4, the sound waves generated by the second diaphragm a2 are guided to the second sound outlet b2 through the sound guide channel 41 and then propagated in the air.

[0052] Optionally, the first diaphragm a1 and the second diaphragm a2 each have an independent front cavity and rear cavity.

[0053] As an implementation method, the mainboard bracket 4 and the foam 6 form the second front cavity a21 of the second diaphragm a2, the cover plate 7 and the frame 2 form the second rear cavity a22 of the second diaphragm a2, and the cover plate 7 and the frame 2 are sealed by foam to prevent air leakage.

[0054] As an implementation method, the mainboard bracket 4 and the foam 6 are arranged to form the first front cavity a11 of the first diaphragm a1, the first rear cavity a12 of the first diaphragm a1 is sealed by the mainboard bracket 4, and the mainboard bracket 4 and the mainboard 5 are sealed by the foam 6 to prevent air leakage.

[0055] In the above embodiment, the combination of two diaphragm units is more conducive to saving space and volume compared to two separate speaker units; moreover, the two diaphragms can be driven and controlled by two independent controllers to work independently. In this way, the frequency response and phase of the two sound outlets are adjusted by the algorithm module to improve the sound leakage prevention effect. By placing the diaphragm forward or backward, the sound leakage prevention and sound enhancement functions of different stacking methods can be achieved to adapt to the sound emission methods of different scenarios. Moreover, the combination of dual diaphragms can effectively reduce the space in the Z direction (the thickness direction of the electronic device).

[0056] Exemplary application scenarios include: ① In the handset mode call scenario, the first diaphragm a1 emits a positive sound wave, and the second diaphragm a2 emits a sound wave in the opposite phase to the first diaphragm a1. In this way, phase cancellation can be achieved at a distant location, thereby preventing sound leakage and ensuring information security. ② In the external speaker scenario (music playback scenario), the two diaphragms can be controlled to emit sound in phase, so that the sound is superimposed and a high volume mode is achieved; ③ When the user needs to play at a low volume, the user can customize the vibration to turn off one location to achieve a power saving function.

[0057] 12 to 15 , based on the above embodiment, the second part further includes: a third diaphragm a3 , the third diaphragm a3 and the second diaphragm a2 being overlapped in the thickness direction of the electronic device;

[0058] The third front cavity a31 of the third diaphragm a3 faces the screen 1 , and the third front cavity a31 is connected to the first sound outlet b1 .

[0059] In the third state, at least two of the first diaphragm a1, the second diaphragm a2, and the third diaphragm a3 vibrate in phase;

[0060] In the fourth state, one of the first diaphragm a1, the second diaphragm a2, and the third diaphragm a3 vibrates;

[0061] In the fifth state, the first diaphragm a1 and the third diaphragm a3 vibrate in opposite phases, and the second diaphragm a2 does not work;

[0062] In the sixth state, the first diaphragm a1 and the second diaphragm a2 vibrate in opposite phases, and the third diaphragm a3 does not work;

[0063] In the seventh state, the second diaphragm a2 and the third diaphragm a3 vibrate in opposite phases, and the first diaphragm a1 does not work.

[0064] For example, referring to Figures 12 to 15, Figure 14 is an internal schematic diagram after hiding part of the screen 1, and Figure 15 is an internal schematic diagram after hiding the back cover 3. The first front cavity a11 of the first diaphragm a1 and the third front cavity a31 of the third diaphragm a3 are facing the screen 1, that is, the first diaphragm a1 and the third diaphragm a3 are placed forward, and the second front cavity a21 of the second diaphragm a2 is facing the back cover 3, that is, the second diaphragm a2 is placed in reverse.

[0065] In the above embodiment, a speaker unit includes three diaphragms, the first diaphragm a1 and the third diaphragm a3 emit sound through the first sound outlet b1 (the micro-gap formed between the frame 2 and the screen), and the second diaphragm a2 emits sound through the second sound outlet b2 located at the top of the frame 2. The three diaphragms are controlled separately and independently, so that the three diaphragms are in different states, which can be suitable for different application scenarios and are more flexible to drive.

[0066] For example, in a call scenario, the three diaphragms can be placed in the fifth, sixth or seventh state mentioned above to achieve the sound leakage prevention function; in the external speaker mode, different diaphragms can be selected to work according to sound requirements. For example, when a higher volume is required, the three diaphragms can be placed in the third state according to the required volume. When a lower volume is required, the three diaphragms can be controlled to be in the fourth state to save energy. Among them, the three diaphragms vibrate in phase to achieve the maximum volume, and the two diaphragms vibrate in phase to achieve a medium volume.

[0067] Moreover, by having three diaphragms vibrating in phase, a stereo effect can also be achieved.

[0068] In one embodiment, the second parts share a common rear cavity.

[0069] That is, the third diaphragm a3 and the second diaphragm a2 correspond to the same rear cavity, thus saving the space occupied by the speaker unit.

[0070] Optionally, the rear cavity of the third diaphragm a3 and the second diaphragm a2 is designed as a closed structure within the monomer, such as a cavity formed by a ring structure, combined with a foam seal. The mainboard bracket 4 and the mainboard 5 enclose the first rear cavity a12 of the first diaphragm a1, and the mainboard bracket 4 and the mainboard 5 are sealed with foam to prevent air leakage.

[0071] In one embodiment, the second part includes a second rear cavity a22 and a third rear cavity, the second rear cavity a22 corresponds to the second diaphragm a2, and the third rear cavity corresponds to the third diaphragm a3.

[0072] That is, the third diaphragm a3 and the second diaphragm a2 respectively correspond to an independent rear cavity.

[0073] Optionally, the mainboard bracket 4 and the foam 6 enclose a third rear cavity (not shown) for the third diaphragm a3, and the mainboard bracket 4 and the foam 6 enclose a second rear cavity a22 for the second diaphragm a2. The mainboard bracket 4 and the mainboard 5 enclose a first rear cavity a12 for the first diaphragm a1, and the mainboard bracket 4 and the mainboard 5 are sealed with foam 6 to prevent air leakage.

[0074] Referring to FIG. 16 to FIG. 21 , based on the above embodiment, the first part further includes: a fourth diaphragm a4 , a fourth diaphragm a5 overlapping the first diaphragm a1 in the thickness direction of the electronic device;

[0075] The fourth front cavity a41 of the fourth diaphragm a4 faces away from the screen 1 , and is communicated with the third sound outlet b3 .

[0076] In the eighth state, the first diaphragm a1 and the fourth diaphragm a4 vibrate in anti-phase, and the second diaphragm a2 and the third diaphragm a3 do not work;

[0077] In the ninth state, the second diaphragm a2 and the third diaphragm a3 vibrate in anti-phase, and the first diaphragm a1 and the fourth diaphragm a4 do not work;

[0078] In the tenth state, at least two of the first diaphragm a1, the second diaphragm a2, the third diaphragm a3, and the fourth diaphragm a4 vibrate in phase;

[0079] In the eleventh state, one of the first diaphragm a1, the second diaphragm a2, the third diaphragm a3, and the fourth diaphragm a4 vibrates.

[0080] For example, referring to Figures 16 to 17, the first front cavity a11 of the first diaphragm a1 and the third front cavity a31 of the third diaphragm a3 are facing the screen 1, that is, the first diaphragm a1 and the third diaphragm a3 are placed forward, and the second front cavity a21 of the second diaphragm a2 and the fourth front cavity a41 of the fourth diaphragm a4 are facing the back cover 3, that is, the second diaphragm a2 and the fourth diaphragm a4 are placed in reverse.

[0081] For example, as shown in Figures 20 and 21, the first diaphragm a1 and the third diaphragm a3 emit sound through the first sound hole b1 (the micro-gap formed between the frame 2 and the screen), the second diaphragm a2 emits sound through the second sound hole b2 located at the top of the frame 2, and the fourth diaphragm a4 emits sound through the third sound hole b3 opened on the back cover 3.

[0082] In the above embodiment, one speaker unit includes four diaphragms, and the four diaphragms are controlled separately and independently, so that the four diaphragms are in different states, which can be suitable for different application scenarios and drive more flexibly.

[0083] For example, in a call scenario, the four diaphragms can be placed in the eighth or ninth state to prevent sound leakage. In speaker mode, different diaphragms can be selected based on sound requirements. For example, when a higher volume is required, three diaphragms can be placed in the tenth state according to the required volume level. When a lower volume is required, the three diaphragms can be controlled to the eleventh state to save energy. In this case, the four diaphragms vibrate in phase, and the two diaphragms vibrate in phase, which can achieve three volume levels and also bring a stereo effect.

[0084] In one embodiment, the electronic device further includes: a back cover 3 , and the frame 2 is fixedly connected to the back cover 3 on a side away from the screen 1 ; wherein the third sound outlet b3 is provided on the back cover 3 .

[0085] For example, referring to FIG18 and FIG19 , the mainboard bracket 4 and the back cover 3 are both provided with third sound holes b3 at corresponding positions of the fourth diaphragm a4, and the sound waves emitted by the fourth diaphragm a4 are conducted into the air through the third sound holes b3.

[0086] In one embodiment, the first parts share a common rear cavity.

[0087] That is, the fourth diaphragm a4 and the first diaphragm a1 correspond to the same rear cavity, thereby saving space occupied by the speaker unit.

[0088] Optionally, a closed structure is designed inside the monomer of the rear cavity of the fourth diaphragm a4 and the first diaphragm a1, such as a cavity formed by an annular structure, which is sealed in combination with foam 6.

[0089] In one embodiment, the first part includes a first rear cavity a12 and a fourth rear cavity, the first rear cavity a12 corresponds to the first diaphragm a1, and the fourth rear cavity corresponds to the fourth diaphragm a4.

[0090] That is, the fourth diaphragm a4 and the first diaphragm a1 each have an independent rear cavity.

[0091] Optionally, the mainboard bracket 4 and the foam 6 are respectively used to surround and form the fourth diaphragm a4 and the first rear cavity a12 of the first diaphragm a1.

[0092] In one embodiment, the first portion and the second portion share a common rear cavity.

[0093] That is, the first diaphragm a1, the second diaphragm a2, the third diaphragm a3 and the fourth diaphragm a4 correspond to the same rear cavity, thereby saving space occupied by the speaker unit.

[0094] Optionally, a closed structure is designed inside the monomer for the rear cavities corresponding to the first diaphragm a1, the second diaphragm a2, the third diaphragm a3 and the fourth diaphragm a4. For example, a cavity is formed by enclosing a ring structure and sealed with foam 6; for example, a closed rear cavity is formed by enclosing a mainboard bracket 4, a mainboard 5, a speaker, a frame 2 and foam 6.

[0095] It should be noted that, in this article, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the statement "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element. In addition, it should be noted that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the opposite order according to the functions involved. For example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0096] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus the necessary general hardware platform, and of course can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present application, or the part that contributes to the relevant technology, can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk), and includes a number of instructions for enabling a terminal (which can be a mobile phone, computer, server, air conditioner, or network equipment, etc.) to execute the methods of each embodiment of the present application.

[0097] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms without departing from the purpose of this application and the scope of protection of the claims, all of which are within the protection of this application.

Claims

1. An electronic device, comprising: A screen, a frame and a speaker, wherein the speaker comprises a first part and a second part, the first part comprises a first diaphragm, and the second part comprises a second diaphragm; the arrangement direction of the first part and the second part is parallel to the screen; The first front cavity of the first diaphragm faces the screen, and the first front cavity is connected to the first sound outlet hole; the second front cavity of the second diaphragm faces away from the screen, and the second front cavity is connected to the second sound outlet hole; The first sound outlet hole is formed at a gap between the frame and the screen, and the second sound outlet hole is arranged on the frame; In a first state, the first diaphragm and the second diaphragm vibrate in phase; in a second state, the first diaphragm and the second diaphragm vibrate in anti-phase.

2. The electronic device according to claim 1, wherein: The second part further includes: a third diaphragm, the third diaphragm and the second diaphragm are overlapped in the thickness direction of the electronic device; The third front cavity of the third diaphragm faces the screen, and the third front cavity is connected to the first sound outlet hole.

3. The electronic device according to claim 2, wherein: In a third state, at least two of the first diaphragm, the second diaphragm and the third diaphragm vibrate in phase; In a fourth state, one of the first diaphragm, the second diaphragm and the third diaphragm vibrates; In another state, any one of the first diaphragm, the second diaphragm and the third diaphragm does not work, and the other two vibrate in anti-phase.

4. The electronic device according to any one of claims 2 or 3, wherein: In a fifth state, the first diaphragm and the third diaphragm vibrate in opposite phases, and the second diaphragm does not work; In a sixth state, the first diaphragm and the second diaphragm vibrate in opposite phases, and the third diaphragm does not work; In the seventh state, the second diaphragm and the third diaphragm vibrate in opposite phases, and the first diaphragm does not Work.

5. The electronic device according to claim 2, wherein: The first part further includes: a fourth diaphragm, the fourth diaphragm and the first diaphragm are overlapped in the thickness direction of the electronic device; The fourth front cavity of the fourth diaphragm faces away from the screen, and the fourth front cavity of the fourth diaphragm is connected to the third sound outlet hole.

6. The electronic device according to claim 5, wherein: In the eighth state, the first diaphragm and the fourth diaphragm vibrate in opposite phases, and the second diaphragm and the third diaphragm do not work; In a ninth state, the second diaphragm and the third diaphragm vibrate in anti-phase, and the first diaphragm and the fourth diaphragm do not work.

7. The electronic device according to claim 5, wherein: In a tenth state, at least two of the first diaphragm, the second diaphragm, the third diaphragm, and the fourth diaphragm vibrate in phase; In an eleventh state, one of the first diaphragm, the second diaphragm, the third diaphragm, and the fourth diaphragm vibrates.

8. The electronic device according to claim 5, wherein: The electronic device further comprises: a back cover, and the frame is fixedly connected to the back cover at a side away from the screen; wherein the third sound outlet is arranged on the back cover.

9. The electronic device according to claim 2 or 5, wherein: The electronic device further comprises: a mainboard bracket, the mainboard bracket is provided with a mounting hole, the second diaphragm is arranged in the mounting hole; the mainboard bracket is provided with a sound guide channel, the sound guide channel connects the second sound outlet hole and the second front cavity of the second diaphragm.

10. The electronic device according to claim 2 or 5, wherein: The second parts share a common rear cavity.

11. The electronic device according to claim 2 or 5, wherein: The second part includes a second rear cavity and a third rear cavity, the second rear cavity corresponds to the second diaphragm, and the third rear cavity corresponds to the third diaphragm.

12. The electronic device according to claim 5, wherein: The first parts share a common rear cavity.

13. The electronic device according to claim 5, wherein: The first part includes a first rear cavity and a fourth rear cavity, the first rear cavity corresponds to the first diaphragm, and the fourth rear cavity corresponds to the fourth diaphragm.

14. The electronic device according to claim 5, wherein: The first part and the second part share a back cavity.

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