Speaker and electronic device

Abstract

The application provides a loudspeaker and an electronic device. The loudspeaker is applied to the electronic device. The electronic device comprises a mounting surface. The loudspeaker comprises a flexible body part. The flexible body part is provided with a plurality of sound generating parts. A sealing part is formed between any adjacent sound generating parts. In the thickness direction of the flexible body part, the flexible body part is laminated on the mounting surface. The sealing part is fixedly attached to the mounting surface. A sealed sound cavity is formed between the sound generating part and the mounting surface. After the loudspeaker is powered on, the sound generating part is deformed in the thickness direction to push air to vibrate and form sound waves. The sound emitted by the loudspeaker can be almost losslessly heard by a user. The sound quality is good, and the front stage feeling is strong.

Description

Technical Field

[0001] This application relates to the field of loudspeaker technology, and more particularly to a loudspeaker and electronic device. Background Technology

[0002] Various electronic devices have become indispensable products in people's work and life. Electronic devices generally need to be equipped with speakers for user convenience.

[0003] However, in current electronic devices, when users listen to sound, the sound waves emitted by the speaker do not travel in the same direction as the user's ears, resulting in a lack of direct immersion. Summary of the Invention

[0004] This application provides a loudspeaker and an electronic device, wherein the sound waves of the loudspeaker propagate towards the user's ears, providing a strong sense of presence.

[0005] This application provides a loudspeaker for use in an electronic device, the electronic device including a mounting surface; the loudspeaker includes: a flexible body portion having multiple sound-emitting portions, with a sealing portion formed between any adjacent sound-emitting portions; the flexible body portion is stacked on the mounting surface along its thickness direction, the sealing portions are fitted and fixed to the mounting surface, and each sound-emitting portion is spaced apart from the mounting surface to form a sealed acoustic cavity. When the loudspeaker is powered on, the sound-emitting portions deform along their thickness direction to drive air vibration and generate sound waves.

[0006] In related technologies, the speaker outlets of electronic devices are located on the bezel, so the sound waves from the speaker are emitted towards the side of the electronic device. However, when users actually use electronic devices, their ears are usually directly facing the mounting surface of the display screen. That is, the user's ears and the direction of the emitted sound waves are completely opposite. Therefore, the sound quality from the speaker that the user hears is poor and lacks a sense of presence.

[0007] In this embodiment, the flexible body of the speaker is stacked on the mounting surface of the display screen. When the user uses the electronic device, their ear is facing the flexible body, that is, the user's ear is exactly in the direction of sound wave emission. Therefore, the sound emitted by the speaker can be heard by the user with almost no loss, resulting in better sound quality and a stronger sense of presence.

[0008] In some embodiments, multiple sound-emitting parts are arranged in M ​​rows, where M is a positive integer greater than or equal to 2; and / or, multiple sound-emitting parts are arranged in N columns, where N is a positive integer greater than or equal to 2. That is, the regular arrangement of multiple sound-emitting parts facilitates processing and increases space utilization, allowing more sound-emitting parts to be set on the flexible body. The more sound-emitting parts there are, the better the sound effect of the speaker.

[0009] In some embodiments, the loudspeaker further includes multiple connection terminals; each row of multiple sound-emitting parts is connected to one of the connection terminals; or, each column of multiple sound-emitting parts is connected to one connection terminal. Each row of sound-emitting parts is connected to one connection terminal, and each connection terminal can be controlled independently. Therefore, each row of sound-emitting parts can emit sound independently, and the phase of the electroacoustic signals between multiple rows of sound-emitting parts can be controlled to achieve directional control of the sound waves. Directional control of the sound waves can provide an immersive experience, such as achieving surround sound. The same principle applies to multiple columns of sound-emitting parts, and will not be elaborated further.

[0010] In some embodiments, the outer contour of the sound-emitting part has a regular shape, which facilitates processing and allows multiple sound-emitting parts to be regularly arranged on the flexible body part, as well as making the gap between adjacent sound-emitting parts controllable. This allows for the setting of a larger number of sound-emitting parts on the flexible body part, thereby increasing the sound output of the loudspeaker.

[0011] In some embodiments, in two adjacent sound-emitting parts, the edges of one sound-emitting part and the edges of the other sound-emitting part are parallel and spaced apart. A sealing portion is provided between any two adjacent sound-emitting parts. Because the edges of adjacent sound-emitting parts are parallel and spaced apart, the outer contour of the sealing portion between the edges of adjacent sound-emitting parts can be rectangular, and this sealing portion can be made very small. With the total area of ​​the flexible body portion remaining constant, reducing the area of ​​the sealing portion increases the area available for the sound-emitting parts, allowing for a greater number of sound-emitting parts to be provided on the flexible body portion, thereby increasing the sound output of the loudspeaker.

[0012] In some embodiments, the outer contour of the sound-emitting part is any one of a circle, ellipse, rectangle, or square. That is, the edge of the sound-emitting part is round or ellipse, which makes the connection between the sound-emitting part and the sealing part smooth. Therefore, the force is evenly distributed at all parts of the connection between the sound-emitting part and the sealing part, which can reduce the risk of the sealing part being pulled off the display surface when the sound-emitting part deforms. Rectangles and squares are more common shapes and are easier to process.

[0013] In some embodiments, the outer contour of the sound-emitting part is a regular hexagon, and the sound-emitting part includes six edges; one edge of the sound-emitting part is parallel to and spaced apart from the edges of adjacent sound-emitting parts. A sealing portion is provided between any two adjacent sound-emitting parts. Because the edges of two adjacent sound-emitting parts are parallel, the sealing portion between the edges of two adjacent sound-emitting parts can be rectangular, and this sealing portion can be made very small. With the total area of ​​the flexible body portion remaining constant, reducing the area of ​​the sealing portion increases the area available for the sound-emitting parts, allowing for a greater number of sound-emitting parts to be provided on the flexible body portion, thereby increasing the sound output of the loudspeaker.

[0014] In some embodiments, the plurality of sound-emitting parts include a first sound-emitting part and a second sound-emitting part, wherein the outer contour of the first sound-emitting part is a regular octagon and the outer contour of the second sound-emitting part is a square; the first sound-emitting part includes eight first edges and the second sound-emitting part includes four second edges; the plurality of first sound-emitting parts are arranged in an array, wherein the first edge of one of the first sound-emitting parts is parallel to the first edge of the adjacent first sound-emitting parts; the four first sound-emitting parts enclose a square space, and the second sound-emitting part is located within the square space; the second edge is parallel to the adjacent first edge.

[0015] In some embodiments, the plurality of sound-emitting parts include a first sound-emitting part and a second sound-emitting part. Along the thickness direction, the area of ​​the orthographic projection of the first sound-emitting part onto the mounting surface is larger than the area of ​​the orthographic projection of the second sound-emitting part onto the mounting surface. Therefore, when the speaker is powered on, the maximum deformation produced by the first sound-emitting part is greater than the maximum deformation produced by the second sound-emitting part, and the vibration frequency of the first sound-emitting part is lower than the vibration frequency of the second sound-emitting part. Thus, the first sound-emitting part can emit bass frequencies, and the second sound-emitting part can emit treble frequencies. That is, the first sound-emitting part can be a woofer, and the second sound-emitting part can be a tweeter; the tweeter and woofer can compensate for each other's frequency response deficiencies.

[0016] In some embodiments, the plurality of sound-emitting parts in each row include a first sound-emitting part and a second sound-emitting part, which are arranged alternately; and / or, the plurality of sound-emitting parts in each column include a first sound-emitting part and a second sound-emitting part, which are arranged alternately. This can further enhance the mutual compensation effect between the tweeter and the woofer.

[0017] In some embodiments, the flexible body portion includes a first electrode layer, a piezoelectric layer, and a second electrode layer, which are sequentially stacked and fixed along the thickness direction.

[0018] In some embodiments, the thickness of the flexible body portion is between 3 micrometers and 100 micrometers along the thickness direction. This relatively thin flexible body portion facilitates the design of thinner and lighter electronic devices.

[0019] The second aspect of this application provides an electronic device, including a mounting surface and a speaker as described in any of the first aspects of this application, with a flexible body portion fixed to the mounting surface.

[0020] In some embodiments, the electronic device includes a display screen, with the mounting surface being the display surface of the screen; the flexible body portion is light-transmitting.

[0021] In related technologies, the speaker outlets of mobile phones are all located on the bezel, so the sound waves from the speaker are emitted towards the side of the phone. However, when users actually use the phone, their ears are usually directly facing the display screen. This means the direction of the sound waves emitted is completely opposite to the user's ears. Therefore, the sound quality from the speaker that the user hears is poor and lacks a sense of presence.

[0022] In this embodiment, the mobile phone has a mounting surface, specifically, the mounting surface can be the display surface of the screen. The flexible body of the speaker is stacked on the display surface of the screen. When the user uses the phone, their ear is facing the flexible body, meaning their ear is positioned in the direction of sound wave emission. Therefore, the sound emitted by the speaker can be heard by the user with almost no loss, resulting in good sound quality and a strong sense of presence. Furthermore, the flexible body is translucent and will not affect the user's viewing of the content displayed on the screen.

[0023] In some embodiments, along the thickness direction, the area of ​​the orthographic projection of the flexible body part onto the mounting surface is S1, and the area of ​​the mounting surface is S2. S1 and S2 satisfy the following relationship: 0.1S2≤S1≤S2; multiple sound-emitting parts are evenly arranged on the flexible body part. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application or the background art, the accompanying drawings used in the embodiments of this application or the background art will be described below.

[0025] Figure 1 This is a schematic diagram of the structure of the mobile phone provided in the first state according to the embodiments of this application.

[0026] Figure 2 This is a schematic diagram of the structure of the mobile phone in the second state provided in the embodiment of this application.

[0027] Figure 3 This is a schematic diagram of the structure of the loudspeaker provided in the embodiment of this application.

[0028] Figure 4 yes Figure 3 The diagram shows a cross-sectional view of the speaker.

[0029] Figure 5 yes Figure 3 The diagram shows the internal structure of the loudspeaker.

[0030] Figure 6 This is a schematic diagram of the structure of a speaker applied to a mobile phone display screen according to an embodiment of this application.

[0031] Figure 7 This is a schematic diagram of the structure of a loudspeaker provided in another embodiment of this application.

[0032] Figure 8 yes Figure 2 The diagram shows the structure of the display surface of the mobile phone screen.

[0033] Figure 9 This is a schematic diagram of the structure of the first specific embodiment of the flexible body portion of the loudspeaker provided in this application.

[0034] Figure 10 This is a schematic diagram of the structure of a second specific embodiment of the flexible body portion of the loudspeaker provided in this application.

[0035] Figure 11 This is a schematic diagram of the structure of a third specific embodiment of the flexible body portion of the loudspeaker provided in this application.

[0036] Figure 12 yes Figure 11 A partially enlarged structural diagram of the flexible body shown.

[0037] Figure 13 This is a schematic diagram of the fourth specific embodiment of the flexible body portion of the loudspeaker provided in this application.

[0038] Figure 14 This is a schematic diagram of the fifth specific embodiment of the flexible body portion of the loudspeaker provided in this application.

[0039] Figure 15 This is a schematic diagram of the sixth specific embodiment of the flexible body of the loudspeaker provided in this application.

[0040] Figure 16 This is a structural schematic diagram of the seventh specific embodiment of the flexible body portion of the loudspeaker provided in this application.

[0041] Figure 17 This is a schematic diagram of the structure of the earphone provided in the embodiment of this application. Detailed Implementation

[0042] The embodiments of this application are described below with reference to the accompanying drawings.

[0043] Please see Figure 1 and Figure 2This application provides an electronic device, including but not limited to headphones, televisions, cellphones, notebook computers, tablet computers, personal digital assistants, wearable devices, video playback devices (such as large screens in cinemas), or in-vehicle devices. In this application embodiment, a foldable mobile phone is used as an example for illustration.

[0044] Please see Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the structure of the mobile phone 1000 provided in the embodiments of this application in the first state. Figure 2 This is a schematic diagram of the structure of the mobile phone 1000 provided in the second state according to the embodiment of this application. Figure 1 The phone 1000 shown is in a folded state. Figure 2 The mobile phone 1000 shown is in an unfolded state. Figure 2 The unfolding angle of the mobile phone 1000 shown is 180 degrees.

[0045] It should be noted that slight deviations are allowed in the angles illustrated in the embodiments of this application. For example, Figure 2 The 180-degree unfolding angle of the shown phone 1000 means that it can be exactly 180 degrees, or approximately 180 degrees, such as 170 degrees, 175 degrees, 185 degrees, and 190 degrees. The angles illustrated in the following text can be understood in the same way.

[0046] For ease of description, the width direction of mobile phone 1000 is defined as the X-axis direction, the length direction of mobile phone 1000 is defined as the Y-axis direction, and the thickness direction of mobile phone 1000 is defined as the Z-axis direction. The X-axis, Y-axis, and Z-axis directions are all perpendicular to each other.

[0047] The mobile phone 1000 includes a main body 200 and a display screen 300. The main body 200 includes a first housing 210, a second housing 220, a rotating mechanism 230, a battery (not shown), and a circuit board (not shown). The first housing 210 has a first mounting groove (not shown), and the second housing 220 has a second mounting groove (not shown). The first mounting groove and the second mounting groove communicate to form a mounting groove. The rotating mechanism 230 is mounted in the mounting groove and is fixedly connected to the first housing 210 and the second housing 220 to realize the rotational connection between the first housing 210 and the second housing 220. The first housing 210 and the second housing 220 can rotate relative to each other through the rotating mechanism 230, so that the main body 200 can switch between a folded state and an unfolded state.

[0048] In this embodiment, the rotating mechanism 230 is a hinge, connecting the first housing 210 and the second housing 220. It functions as a rotating structure between the first housing 210 and the second housing 220, enabling relative free rotation and relative folding of the two housings. In other embodiments, the rotating mechanism 230 can be any other rotating structure, as long as it allows for relative free rotation and relative folding of the first housing 210 and the second housing 220 without damaging the display screen 300.

[0049] In this embodiment, the display screen 300 is mounted on the main body 200. The display screen 300 is a flexible display screen 300, which can be bent and deformed. The display screen 300 includes a display surface 310 and a backlight surface, which are arranged opposite to each other. The display surface 310 is used to display text, images, and videos, etc. The side of the first housing 210 and the second housing 220 facing away from the display screen 300 is the outer surface of the mobile phone 1000, and the side that supports the display screen 300 is the inner side. In fact, the inner side of the first housing 210 and the second housing 220 is provided with a support part, and the display screen 300 is mounted on the support part.

[0050] In this embodiment, the number of batteries can be one or two, and the circuit board can include a main board and an auxiliary board. The battery is installed inside the first housing or the second housing, and the circuit board is installed inside the first housing or the second housing. The battery is electrically connected to the circuit board, and the circuit board is electrically connected to the display screen 300, so that the battery can power the display screen 300.

[0051] Please refer to Figure 3 and Figure 4 , Figure 3 This is a schematic diagram of the structure of the speaker 100 provided in the embodiment of this application. Figure 4 yes Figure 3 The diagram shows a cross-sectional view of the speaker 100. The mobile phone 1000 provided in this embodiment may further include a speaker 100, which is in the form of a thin film. The speaker 100 includes a flexible body portion 10 and a connecting terminal 20. The flexible body portion 10 is made of a flexible material, is deformable, and is translucent, with a transparency greater than 90%. The flexible body portion 10 can be any shape, such as square, rectangular, circular, or elliptical. Those skilled in the art can design it according to actual needs and the required installation location of the speaker 100; this application does not impose limitations on such designs.

[0052] The flexible body portion 10 includes a sealing portion 12 and a plurality of sound-emitting portions 11, with a sealing portion 12 between any two adjacent sound-emitting portions 11. Specifically, the flexible body portion 10 includes a first surface 101 and a second surface 102, which are arranged opposite to each other along the Z-axis. The sound-emitting portion 11 is formed by the first surface 101 being recessed towards the second surface 102, while the second surface 102 is convex away from the first surface 101. In other words, the thickness of the sound-emitting portion 11 and the sealing portion 12 is equal along the Z-axis, the sound-emitting portion 11 can be dome-shaped, and the sound-emitting portion 11 has a recessed portion 111. A sealing portion 12 is provided between any two adjacent sound-emitting portions 11, and the sealing portion 12 is an integral structure in the form of a honeycomb mesh.

[0053] Please refer to Figure 5 , Figure 5 yes Figure 3 The diagram shows the internal structure of the loudspeaker 100. The flexible body portion 10 includes a first electrode layer 14, a piezoelectric layer 16, and a second electrode layer 15, which are sequentially stacked and fixed along the Z-axis. The piezoelectric layer 16 can be made of a piezoelectric polymer film, specifically a polyvinylidene fluoride (PVDF) piezoelectric film. Furthermore, the thickness of the flexible body portion 10 along the Z-axis is between 3 micrometers and 100 micrometers; specifically, the thickness can be 3 micrometers, 10 micrometers, 20 micrometers, 30 micrometers, 40 micrometers, 50 micrometers, 60 micrometers, 70 micrometers, 80 micrometers, 90 micrometers, or 100 micrometers. As can be seen, the flexible body portion 10 is relatively thin. The connection terminal 20 includes an input terminal and an output terminal. One end of the input terminal is connected to the first electrode layer 14, and one end of the output terminal is connected to the second electrode layer 15.

[0054] Please refer to Figure 6 , Figure 6This is a schematic diagram of the speaker 100 provided in this application embodiment applied to the display screen 300 of a mobile phone 1000. In this embodiment, along the Z-axis direction, the flexible body portion 10 is stacked on the display surface 310 of the display screen 300. Specifically, the first surface 101 faces the display surface 310, and the sealing portion 12 is attached and fixed to the display surface 310. Specifically, the sealing portion 12 can be bonded to the display surface 310 using adhesive. Along the Z-axis direction, the sound-emitting portion 11 and the display surface 310 are spaced apart and form a sealed sound cavity 13. Specifically, the recessed portion 111 of the sound-emitting portion 11 faces the display surface 310, so that a sealed sound cavity 13 is formed between the sound-emitting portion 11 and the display surface 310. The input terminal passes through the edge gap of the second housing and enters the interior of the second housing, and the end of the input terminal away from the first electrode layer 14 is connected to the control chip integrated on the circuit board. The output terminal passes through the edge gap of the second housing and enters the interior of the second housing, and the end of the output terminal away from the second electrode layer 15 is connected to the control chip integrated on the circuit board. The control chip is used to power the speaker 100, and to control whether the speaker 100 emits sound and the volume, etc. The control chip may include a decoding chip, a power management chip, and a power amplifier, etc.

[0055] Because the flexible body 10 is thin, it has little impact on the thickness of the mobile phone 1000, which is beneficial to the thinner and lighter design of the mobile phone 1000.

[0056] In this embodiment, after the battery supplies power to the speaker 100 via the control chip, the sound-emitting part 11 will deform, tending to deform perpendicular to the Z-axis. However, since the sealing parts 12 surrounding the sound-emitting part 11 are all bonded to the display surface 310, the tendency of the sound-emitting part 11 to deform along the Z-axis will be converted. That is, after the flexible body part 10 is powered on, the sound-emitting part 11 itself can vibrate to drive the air to generate sound waves, and the propagation direction of the sound waves is basically parallel to the Z-axis. At this time, the sound-emitting part 11 moves up and down along the Z-axis to drive the air to vibrate and form sound waves.

[0057] In related technologies, the sound outlet of the speaker 100 in electronic devices such as mobile phones 1000 is located on the bezel, so the sound waves from the speaker 100 propagate towards the side of the mobile phone 1000. However, when a user actually uses the mobile phone 1000, their ear canal is usually facing the display surface 310 of the screen 300, so the sound field produced by the speaker lacks a frontal sense of presence. That is, the user's ear canal and the direction of sound wave propagation are completely misaligned. Therefore, the sound quality emitted by the speaker 100 heard by the user is poor, and there is no frontal sense of presence.

[0058] In this embodiment, the mobile phone 1000 has a mounting surface, specifically, the mounting surface can be the display surface 310 of the display screen 300. The flexible body portion 10 of the speaker 100 is stacked on the display surface 310 of the display screen 300. When the user uses the mobile phone 1000, their ear faces the flexible body portion 10, and the side of the flexible body portion 10 away from the display surface 310 faces the user's ear. That is, the direction of sound wave propagation is towards the user's ear canal. Therefore, the sound emitted by the speaker 100 can be heard by the user with almost no loss, resulting in good sound quality and a strong sense of presence. Furthermore, the flexible body portion 10 is translucent and will not affect the user's viewing of the content displayed on the display surface 310.

[0059] In this embodiment, after the flexible body portion 10 is stacked on the display surface 310, the area of ​​the orthographic projection of the flexible body portion 10 onto the display surface 310 along the Z-axis direction is S1, and the area of ​​the display surface 310 is S2. S1 and S2 satisfy the following relationship: 0.1S2≤S1≤S2; multiple sound-emitting portions 11 are evenly arranged on the flexible body portion 10. Specifically, S1 can be set to S2, that is, the flexible body portion 10 completely covers the display surface 310, thereby allowing the sound-emitting portions 11 to be evenly distributed on the entire display surface 310, increasing the number of sound-emitting portions 11 and further enhancing the sound quality of the speaker 100. In other embodiments, S1 can also be set to 0.1S2, S1 = 0.2S2, S1 = 0.3S2, S1 = 0.4S2, S1 = 0.5S2, S1 = 0.6S2, or S1 = 0.7S2, etc., and this application is not limited thereto.

[0060] Please continue to refer to this. Figure 4 In this embodiment, the multiple sound-emitting parts 11 are arranged in an array, specifically in M ​​rows, N columns, or M rows and N columns. Here, M is a positive integer greater than or equal to 2, and N is a positive integer greater than or equal to 2. In other embodiments, the multiple sound-emitting parts 11 may also be arranged in an unordered manner. Those skilled in the art can design according to actual needs, and this application does not impose any limitations.

[0061] In this embodiment, the multiple sound-emitting parts 11 are arranged in an array, that is, the multiple sound-emitting parts 11 are arranged regularly, which facilitates processing and increases space utilization, so that more sound-emitting parts 11 can be provided on the flexible body part 10. The more sound-emitting parts 11 there are, the better the sound effect of the speaker 100. In this embodiment, the speaker 100 may include only one connection terminal 20, which can control all the sound-emitting parts 11.

[0062] Please refer to Figure 7 , Figure 7This is a schematic diagram of the structure of a loudspeaker 100 provided in another embodiment of this application. In other embodiments, multiple sound-emitting parts 11 are arranged in an array, which also facilitates the control of multiple sound-emitting parts 11 in rows or columns. For example, when multiple sound-emitting parts 11 are arranged in N columns, or when multiple sound-emitting parts 11 are arranged in M ​​rows and N columns, each column of sound-emitting parts 11 is connected to a connection terminal 20, and each connection terminal 20 can be controlled individually. Therefore, each column of sound-emitting parts 11 can emit sound independently, and the phase of the electroacoustic signal can be controlled between multiple columns of sound-emitting parts 11, thereby realizing the directional control of the sound waves. The directional control of the sound waves can provide an immersive experience, such as achieving surround sound.

[0063] The ability to control the phase of electroacoustic signals among the multiple rows of sound-emitting sections 11 specifically means that the emission times of the multiple rows of sound-emitting sections 11 can be sequentially spaced at threshold time intervals. For example, one row of sound-emitting sections 11 can be controlled to emit sound every 1 millisecond. Specifically, after powering the first row of sound-emitting sections 11 through the connection terminal 20 connected to the first row of sound-emitting sections 11, power is supplied through the connection terminal 20 connected to the second row of sound-emitting sections 11 after a 1-millisecond interval, and then power is supplied through the connection terminal 20 connected to the third row of sound-emitting sections 11 after another 1-millisecond interval. This achieves that the first row of sound-emitting sections 11, the second row of sound-emitting sections 11, and the third row of sound-emitting sections 11 emit sound sequentially at 1-millisecond intervals. Of course, the interval time for each row of sound-emitting sections 11 to emit sound is only exemplary. In fact, those skilled in the art can set the interval time according to actual needs, such as setting the interval time to 0.5 milliseconds, 0.7 milliseconds, 0.9 milliseconds, or 1.1 milliseconds, etc., and this application is not limited to this.

[0064] The directional control of sound waves specifically refers to determining the sound emission sequence of the multi-line sound-emitting units 11 based on the positional relationship between the user's ear and the display surface 310 of the screen 300. For details, please refer to... Figure 8 , Figure 8 yes Figure 2 The diagram shows a schematic of the display surface 310 of the display screen 300 of the mobile phone 1000. The display surface 310 includes a central region 311, a first side region 312, and a second side region 313. Along the X-axis, the first side region 312, the central region 311, and the second side region 313 are arranged sequentially. Correspondingly, each of the central region 311, the first side region 312, and the second side region 313 has at least one row of sound-emitting parts 11. For example, assuming there are five rows of sound-emitting parts 11, the first and second rows of sound-emitting parts 11 are located in the first side region 312, the third row of sound-emitting parts 11 is located in the central region 311, and the fourth and fifth rows of sound-emitting parts 11 are located in the second side region 313. If the user's ear is close to the central region 311, the first and fifth rows of sound-emitting parts 11 will sound first, followed by the second and fourth rows of sound-emitting parts 11 after a 0.2-second interval, and finally the third row of sound-emitting parts 11 will sound.

[0065] In addition, the directionality of the sound waves can be adjusted according to the user's position to achieve a better acoustic experience. For example, if the user's ear moves from the central region 311 near the display surface 310 to the first side region 312 near the display surface 310, the fifth row of sound-emitting parts 11 to the first row of sound-emitting parts 11 can be controlled to emit sound sequentially.

[0066] The positional relationship between the user's ear and the display surface 310 can be determined by a distance sensor. Specifically, a distance sensor can be installed inside the first housing and / or the second housing. When the distance sensor detects that a user is approaching the display screen 300, it determines the distance of the user from various areas of the display surface 310. After sending the determined distances to the circuit board, the relevant control module on the circuit board can determine which area the user is closest to. For example, if it is determined that the user is closest to the first side area 312, then the fifth row of sound-emitting units 11 to the first row of sound-emitting units 11 can be controlled to emit sound sequentially.

[0067] In this embodiment, the sound-emitting part 11 has a regular shape. For example, the shape of the outer contour of the sound-emitting part 11 can be a circle, ellipse, square, rectangle, parallelogram, regular hexagon, or regular octagon, etc. It can be understood that the shape of the outer contour of the sound-emitting part 11 refers to the shape of the orthographic projection of the sound-emitting part 11 onto the mounting surface along the Z-axis direction.

[0068] The outer contour of the sound-emitting part 11 has a regular shape, which facilitates processing and allows multiple sound-emitting parts 11 to be regularly arranged on the flexible body part 10. It also makes the gap between adjacent sound-emitting parts 11 controllable, so that a larger number of sound-emitting parts 11 can be provided on the flexible body part 10, thereby increasing the sound output of the speaker 100.

[0069] In this embodiment, in two adjacent sound-emitting parts 11, the edges of one sound-emitting part 11 are parallel and spaced apart from the edges of the other sound-emitting part 11. A sealing part 12 is provided between any two adjacent sound-emitting parts 11. Because the edges of two adjacent sound-emitting parts 11 are parallel and spaced apart, the outer contour of the sealing part 12 between the edges of two adjacent sound-emitting parts 11 can be rectangular, and the sealing part 12 can be made very small. With the total area of ​​the flexible body part 10 remaining constant, reducing the area of ​​the sealing part 12 increases the area available for the sound-emitting parts 11, allowing for a greater number of sound-emitting parts 11 to be provided on the flexible body part 10, thereby increasing the sound output of the speaker 100.

[0070] In this embodiment, all sound-emitting parts 11 can be configured to have the same projected area on the display surface 310. Alternatively, multiple sound-emitting parts 11 can be configured, including a first sound-emitting part 30 and a second sound-emitting part 40, where the projected area of ​​the first sound-emitting part 30 on the display surface 310 is larger than that of the second sound-emitting part 40. Therefore, when the speaker 100 is powered on, the maximum deformation of the first sound-emitting part 30 is greater than that of the second sound-emitting part 40, and the vibration frequency of the first sound-emitting part 30 is lower than that of the second sound-emitting part 40. Thus, the first sound-emitting part 30 can emit bass frequencies, and the second sound-emitting part 40 can emit treble frequencies. In other words, the first sound-emitting part 30 can be a bass unit, and the second sound-emitting part 40 can be a treble unit; the treble and bass units can compensate for each other's frequency response deficiencies. For example, in a song played on a mobile phone, the singer's voice is in a high register, while the instrumental accompaniment is in a low register. In this case, the high-frequency unit can play the singer's voice, while the low-frequency unit can supplement the instrumental accompaniment, making the sound effect of the song better.

[0071] In this embodiment, the distance L between any two adjacent sound-emitting parts 11 satisfies the following condition: 10 micrometers ≤ L ≤ 10 millimeters. Figures 9 to 16 (As shown in the diagram). If L is less than 10 micrometers, the sealing portion 12 between two adjacent sound-emitting parts 11 may be too narrow, and the sealing portion 12 is used to bond and fix it to the display surface 310. If the sealing portion 12 is too narrow, the fixing force between the sealing portion 12 and the display surface 310 will be weak. When the sound-emitting part 11 vibrates, the sealing portion 12 may be pulled away from the display surface 310 by the sound-emitting part 11. If L is greater than 10 millimeters, the number of sound-emitting parts 11 will be too small. Therefore, by setting 10 micrometers ≤ L ≤ 10 millimeters, the sealing portion 12 between two adjacent sound-emitting parts 11 can be wide enough to provide sufficient fixing force between the sealing portion 12 and the display surface 310 to prevent the sealing portion 12 from separating from the display surface 310. At the same time, the number of sound-emitting parts 11 can be increased to improve the frontal presence of the speaker 100.

[0072] The following are some specific implementation methods of this embodiment.

[0073] Please refer to Figure 9 , Figure 9This is a schematic diagram of the structure of the flexible body portion 10 of the speaker 100 provided in this application embodiment, according to a first specific embodiment. In the first specific embodiment, the outer contour of the flexible body portion 10 is rectangular. The outer contour of the sound-emitting portion 11 is circular, and multiple sound-emitting portions 11 are arranged in M ​​rows and N columns. All other parts of the flexible body portion 10 except for the sound-emitting portions 11 are sealing portions 12. The sound-emitting portion 11 is circular, which facilitates processing. In addition, the circular shape of the sound-emitting portion 11, that is, the edge of the sound-emitting portion 11 is circular, makes the connection between the sound-emitting portion 11 and the sealing portion 12 smooth. Therefore, the force on each part at the connection between the sound-emitting portion 11 and the sealing portion 12 is balanced, which can reduce the risk that the sealing portion 12 will be pulled off the display surface 310 when the sound-emitting portion 11 deforms. In the first specific embodiment, the projected area of ​​all sound-emitting portions 11 on the display surface 310 can be set to be the same. In other specific embodiments, multiple sound-emitting parts 11 may be provided, including a first sound-emitting part 30 and a second sound-emitting part 40, wherein the area of ​​the first sound-emitting part 30 projected onto the display surface 310 is larger than the area of ​​the second sound-emitting part 40 projected onto the display surface 310.

[0074] Please refer to Figure 10 , Figure 10 This is a schematic diagram of a second specific embodiment of the flexible body portion 10 of the loudspeaker 100 provided in this application. In the second specific embodiment, the outer contour of the flexible body portion 10 is rectangular. The outer contour of the sound-emitting portion 11 is hexagonal, and multiple sound-emitting portions 11 are arranged in N columns. The sound-emitting portion 11 includes six edges; one edge of the sound-emitting portion 11 is parallel to the edge of the adjacent sound-emitting portion 11. A sealing portion 12 is provided between any two adjacent sound-emitting portions 11. Because the edges of two adjacent sound-emitting portions 11 are parallel, the outer contour of the sealing portion 12 between the edges of two adjacent sound-emitting portions 11 can be rectangular, and the sealing portion 12 can be set very small. With the total area of ​​the flexible body portion 10 remaining unchanged, the area of ​​the sealing portion 12 is reduced, thus increasing the area left for the sound-emitting portions 11, allowing more sound-emitting portions 11 to be provided on the flexible body portion 10, thereby increasing the sound emission effect of the loudspeaker 100. The distance between the edge of one of the sound-emitting parts 11 and the edge of the adjacent sound-emitting parts 11 can be between 1 mm and 10 mm, for example, it can be 1 mm, 3 mm, 5 mm, 7 mm, 9 mm or 10 mm, etc.

[0075] In a second embodiment, all sound-emitting parts 11 may have the same projected area on the display surface 310. In other embodiments, multiple sound-emitting parts 11 may be provided, including a first sound-emitting part 30 and a second sound-emitting part 40, wherein the projected area of ​​the first sound-emitting part 30 on the display surface 310 is larger than the projected area of ​​the second sound-emitting part 40 on the display surface 310.

[0076] Please refer to Figure 11 and Figure 12 , Figure 11 This is a schematic diagram of the third specific embodiment of the flexible body portion 10 of the speaker 100 provided in this application. Figure 12 yes Figure 11 The diagram shows a partially enlarged view of the flexible body portion 10. In the third embodiment, the plurality of sound-emitting portions 11 include a first sound-emitting portion 30 and a second sound-emitting portion 40.

[0077] The outer contour of the first sound-emitting part 30 is a regular octagon, and the outer contour of the second sound-emitting part 40 is a square. The first sound-emitting part 30 includes eight first edges 31, and the second sound-emitting part 40 includes four second edges 41. Multiple first sound-emitting parts 30 are arranged in an array, with the first edges 31 of one of the first sound-emitting parts 30 being parallel to each other. Four first sound-emitting parts 30 enclose a square space, and the second sound-emitting part 40 is located within this square space; its second edges 41 are parallel to the adjacent first edges 31. Multiple second sound-emitting parts 40 are also arranged in an array.

[0078] A sealing portion 12 is provided between any two adjacent first sound-emitting portions 30. Since the first edges 31 of adjacent first sound-emitting portions 30 are parallel, the outer contour of the sealing portion 12 between the first edges 31 of adjacent first sound-emitting portions 30 can be rectangular. A sealing portion 12 is also provided between a first sound-emitting portion 30 and an adjacent second sound-emitting portion 40. Since the first edge 31 of the first sound-emitting portion 30 and the second edge 41 of the adjacent second sound-emitting portion 40 are parallel, the outer contour of the sealing portion 12 between the first edge 31 of the first sound-emitting portion 30 and the second edge 41 of the adjacent second sound-emitting portion 40 can be rectangular. Therefore, both the sealing portion 12 between two adjacent first sound-emitting portions 30 and the sealing portion 12 between a first sound-emitting portion 30 and an adjacent second sound-emitting portion 40 can be made very small. With the total area of ​​the flexible body 10 remaining unchanged, the area of ​​the sealing part 12 is reduced, which increases the area left for the sound-emitting part 11, allowing more sound-emitting parts 11 to be provided on the flexible body 10, thereby increasing the sound output of the speaker 100.

[0079] Furthermore, along the Z-axis, the area of ​​the first sound-emitting part 30 projected onto the display surface 310 is larger than the area of ​​the second sound-emitting part 40 projected onto the display surface 310. Therefore, when the speaker 100 is powered on, the maximum deformation of the first sound-emitting part 30 is greater than the maximum deformation of the second sound-emitting part 40, and the vibration frequency of the first sound-emitting part 30 is lower than the vibration frequency of the second sound-emitting part 40. Thus, the first sound-emitting part 30 can emit bass frequencies, and the second sound-emitting part 40 can emit treble frequencies. In other words, the first sound-emitting part 30 can be a woofer, and the second sound-emitting part 40 can be a tweeter; the tweeter and woofer can compensate for each other's frequency response deficiencies.

[0080] In addition, in the third embodiment, the first sound-emitting part 30 and the second sound-emitting part 40 can be arranged alternately and at intervals, so that the tweeter and the woofer can better compensate for each other. That is, in the third embodiment, the flexible body part 10 can be provided with a larger number of sound-emitting parts 11, and the speaker 100 can achieve high and low frequency complementarity.

[0081] Please refer to Figure 13 , Figure 13 This is a schematic diagram of the fourth specific embodiment of the flexible body portion 10 of the loudspeaker 100 provided in this application. In the fourth specific embodiment, the outer contour of the sound-emitting portion 11 is square, and the plurality of sound-emitting portions 11 are arranged in M ​​rows and N columns.

[0082] Please refer to Figure 14 , Figure 14 This is a schematic diagram of the fifth specific embodiment of the flexible body portion 10 of the loudspeaker 100 provided in this application. In the fifth specific embodiment, the outer contour of the sound-emitting portion 11 is rectangular, and multiple sound-emitting portions 11 are arranged in M ​​rows and N columns.

[0083] Please refer to Figure 15 , Figure 15 This is a schematic diagram of the sixth specific embodiment of the flexible body portion 10 of the loudspeaker 100 provided in this application. In the sixth specific embodiment, the plurality of sound-emitting portions 11 include a first sound-emitting portion 30 and a second sound-emitting portion 40. The outer contour of the first sound-emitting portion 30 is rectangular, and the outer contour of the second sound-emitting portion 40 is square. The plurality of sound-emitting portions 11 are arranged in M ​​rows and N columns.

[0084] Each row of multiple sound-producing parts 11 includes a first sound-producing part 30 and a second sound-producing part 40, which are arranged alternately. That is, the first row can be the first sound-producing part 30, the second row can be the second sound-producing part 40, the third row can be the first sound-producing part 30, and the fourth row can be the second sound-producing part 40. The outer contour of the first sound-producing part 30 is larger than the outer contour of the second sound-producing part 40. The first sound-producing part 30 serves as a tweeter, and the second sound-producing part 40 serves as a woofer, which can achieve high and low frequency complementarity.

[0085] Of course, each column can also be configured with multiple sound-producing parts, including a first sound-producing part 30 and a second sound-producing part 40, with the first sound-producing part 30 and the second sound-producing part 40 arranged alternately. That is, the first column can be the first sound-producing part 30, the second column can be the second sound-producing part 40, the third column can be the first sound-producing part 30, and the fourth column can be the second sound-producing part 40.

[0086] Please refer to Figure 16 , Figure 16This is a structural schematic diagram of the seventh specific embodiment of the flexible body portion 10 of the loudspeaker 100 provided in this application.

[0087] The multiple sound-emitting parts 11 include a first sound-emitting part 30 and a second sound-emitting part 40. The outer contour of the first sound-emitting part 30 is rectangular, and the outer contour of the second sound-emitting part 40 is square. The outer contour of the first sound-emitting part 30 is larger than that of the second sound-emitting part 40. The first sound-emitting part 30 serves as a tweeter, and the second sound-emitting part 40 serves as a woofer, which can achieve high and low frequency complementarity.

[0088] Multiple sound-emitting units 11 are arranged in M ​​rows and N columns. Each row contains multiple sound-emitting units 11, including a first sound-emitting unit 30 and a second sound-emitting unit 40, which are arranged alternately. Each column contains multiple sound-emitting units 11, including a first sound-emitting unit 30 and a second sound-emitting unit 40, which are also arranged alternately. This arrangement allows for better mutual compensation between the tweeter and woofer.

[0089] Please refer to Figure 17 , Figure 17 This is a schematic diagram of the structure of the earphone 2000 provided in this application embodiment. In other embodiments, the electronic device can be an earphone 2000, which includes an earphone cable 2100 and an earpiece 2200. In this embodiment, the outer surface of the earpiece 2200 can be a mounting surface, and the flexible body portion 10 can be stacked on the outer surface of the earpiece 2200 to give the earphone 2000 better sound effects. When the earpiece 2200 is inserted into the user's ear, the sound-emitting part of the flexible body portion 10 faces the inside of the ear from the side away from the mounting surface. This makes the propagation direction of the sound waves from the speaker face the inside of the ear, increasing the sense of frontal presence.

[0090] The above are merely some embodiments and implementation methods of this application. The scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A loudspeaker, characterized in that, The loudspeaker is applied to an electronic device, the electronic device including a mounting surface; the loudspeaker includes: a flexible body portion, the flexible body portion forming a sealing portion and a plurality of sound-emitting portions, the sealing portion being provided between any adjacent sound-emitting portions; the flexible body portion is stacked on the mounting surface along the thickness direction of the flexible body portion, the sealing portion is fitted and fixed to the mounting surface, and a sealed acoustic cavity is formed between each sound-emitting portion and the mounting surface along the thickness direction of the loudspeaker; The flexible body portion includes a first surface and a second surface. Along the thickness direction of the flexible body portion, the first surface and the second surface are disposed opposite to each other. The sound-emitting portion is formed by the first surface being recessed towards the second surface and the second surface being protruding away from the first surface. The sealing portion is an integral structure. When the loudspeaker is powered on, the sound-emitting part deforms along the thickness direction to drive air vibration and generate sound waves.

2. The loudspeaker according to claim 1, characterized in that, The plurality of sound-producing parts are arranged in M ​​rows, where M is a positive integer greater than or equal to 2; and / or, the plurality of sound-producing parts are arranged in N columns, where N is a positive integer greater than or equal to 2.

3. The loudspeaker according to claim 2, characterized in that, The loudspeaker also includes a plurality of connection terminals; each row of the plurality of sound-emitting parts is connected to one of the connection terminals; or, each column of the plurality of sound-emitting parts is connected to one of the connection terminals.

4. The loudspeaker according to any one of claims 1 to 3, characterized in that, The outer contour of the sound-producing part has a regular shape.

5. The loudspeaker according to claim 4, characterized in that, The outer contour of the sound-producing part is any one of a circle, an ellipse, a rectangle with unequal adjacent sides, or a square.

6. The loudspeaker according to claim 4, characterized in that, In two adjacent vocal parts, the edges of one vocal part are parallel to and spaced apart from the edges of the other vocal part.

7. The loudspeaker according to claim 6, characterized in that, The outer contour of the sound-emitting part is a regular hexagon, and the sound-emitting part includes six edges; one of the edges of the sound-emitting part is parallel to and spaced apart from the edges of the adjacent sound-emitting parts.

8. The loudspeaker according to claim 6, characterized in that, The plurality of sound-emitting parts include a first sound-emitting part and a second sound-emitting part, wherein the outer contour of the first sound-emitting part is a regular octagon and the outer contour of the second sound-emitting part is a square; the first sound-emitting part includes eight first edges and the second sound-emitting part includes four second edges. Multiple first sound-emitting parts are arranged in an array, wherein the first edge of one of the first sound-emitting parts is parallel to and spaced apart from the first edge of the adjacent first sound-emitting parts; four first sound-emitting parts enclose a square space, and the second sound-emitting part is located within the square space; the second edge is parallel to the adjacent first edge.

9. The loudspeaker according to any one of claims 1 to 3, characterized in that, The plurality of sound-emitting parts include a first sound-emitting part and a second sound-emitting part, wherein, along the thickness direction, the area of ​​the orthographic projection of the first sound-emitting part onto the mounting surface is greater than the area of ​​the orthographic projection of the second sound-emitting part onto the mounting surface.

10. The loudspeaker according to claim 9, characterized in that, Each row has multiple sound-producing parts, including a first sound-producing part and a second sound-producing part, which are arranged alternately; and / or, each column has multiple sound-producing parts, including a first sound-producing part and a second sound-producing part, which are arranged alternately.

11. The loudspeaker according to any one of claims 1 to 3, characterized in that, The flexible body includes a first electrode layer, a piezoelectric layer, and a second electrode layer, which are sequentially stacked and fixed along the thickness direction.

12. The loudspeaker according to any one of claims 1 to 3, characterized in that, Along the thickness direction, the thickness of the flexible body portion is between 3 micrometers and 100 micrometers.

13. An electronic device, characterized in that, The device includes a mounting surface and a speaker as described in any one of claims 1 to 12, wherein the flexible body portion is fixed to the mounting surface.

14. The electronic device according to claim 13, characterized in that, The electronic device includes a display screen, and the mounting surface is the display surface of the display screen; the flexible body part is light-transmitting.

15. The electronic device according to claim 13, characterized in that, Along the thickness direction, the area of ​​the orthographic projection of the flexible body part onto the mounting surface is S1, and the area of ​​the mounting surface is S2. S1 and S2 satisfy the following relationship: 0.1S2≤S1≤S2; a plurality of the sound-emitting parts are evenly arranged on the flexible body part.

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