Audio and video playing device

Abstract

The present disclosure provides an audio and video playing device, comprising: a display substrate (1) and a loudspeaker unit (2). The display substrate (1) comprises a display side (S1) and a back side (S2) opposite the display side (S1), wherein the display side (S1) comprises a display area (AA) and an edge area (FA) surrounding the display area (AA). The loudspeaker unit (2) is arranged on the display substrate (1) and located in the edge area (FA) of the display side (S1), helping to improve the sound production efficiency of the audio and video playing device.

Description

Audio and video playback device Technical Field

[0001] The present disclosure relates to the technical field of audio and video equipment, and in particular to an audio and video playback device. Background Art

[0002] Currently, the speakers of audio and video playback devices, such as mobile phones, are located on the back of the display screen (the side facing away from the display screen). The sound waves emitted by the speakers must pass through multiple membrane layers of the display screen before they can be received by the user. This results in low sound wave propagation efficiency, especially for mid- and high-frequency sound waves, which suffer significant losses during propagation due to their short wavelengths. To improve sound wave propagation efficiency, speaker holes are often provided in the housing of the audio and video playback device to allow more sound waves to propagate from within the device. However, these holes in the housing of the audio and video playback device are detrimental to the overall aesthetics and are not conducive to improving waterproof and dustproof performance.

[0003] Summary of the Invention

[0004] The present disclosure provides an audio and video playback device, which is used to improve the sound production efficiency of the audio and video playback device.

[0005] In a first aspect of the present disclosure, there is provided an audio and video playback device, comprising:

[0006] Display substrate; the display substrate includes a display side and a back side opposite to the display side; the display side includes a display area and an edge area surrounding the display area;

[0007] The speaker unit is arranged on the display substrate and is located in the edge area of ​​the display side.

[0008] In the audio and video playback device provided in the present disclosure, the display substrate includes an array substrate; the array substrate includes:

[0009] substrate;

[0010] The driving circuit layer is located on one side of the substrate; the driving circuit layer is located within the display area; the speaker unit and the driving circuit layer are located on the same side of the substrate.

[0011] In the audio and video playback device provided by the present disclosure, the speaker unit is electrically connected to the driving circuit layer.

[0012] In the audio and video playback device provided in the present disclosure, the speaker unit includes:

[0013] a first electrode, located on the display substrate and in direct contact with the display substrate;

[0014] a piezoelectric layer, located on a side of the bottom electrode facing away from the display substrate;

[0015] The second electrode is located on the side of the piezoelectric layer facing away from the first electrode

[0016] In the audio and video playback device provided by the present disclosure, a vibration cavity is provided on the side of the substrate facing away from the speaker unit; one vibration cavity corresponds to one speaker unit; the orthographic projection of the speaker unit on the substrate at least partially overlaps with the corresponding vibration cavity.

[0017] In the audio and video playback device provided by the present disclosure, the first electrode and the first conductive layer in the driving circuit layer are located on the same layer; the second electrode and the second conductive layer in the driving circuit layer are located on the same layer.

[0018] In the audio and video playback device provided by the present disclosure, the first electrode is electrically connected to the driving circuit layer via a first trace located on the same layer as the first conductive layer;

[0019] The second electrode is electrically connected to the driving circuit layer through a second wiring located in the same layer as the second conductive layer.

[0020] In the audio and video playback device provided by the present disclosure, the speaker unit is a piezoelectric speaker; the piezoelectric speaker is bonded to the display substrate via an adhesive layer located between the piezoelectric speaker and the display substrate.

[0021] In the audio and video playback device provided by the present disclosure, the piezoelectric speaker includes connecting pins; the connecting pins are used for welding leads, and the piezoelectric speaker is electrically connected to the driving circuit layer through the leads.

[0022] In the audio and video playback device provided by the present disclosure, at least one speaker array is provided in the edge area; a speaker array includes at least one column of speaker units.

[0023] In the audio and video playback device provided in the present disclosure, the edge region of the display substrate includes a first side and a second side that are opposite to each other;

[0024] A first speaker array and a second speaker array are provided in the edge area;

[0025] The first speaker array is located on the first side, and the column direction of the first speaker array is the same as the extension direction of the first side;

[0026] The second speaker array is located on the second side, and the column direction of the second speaker array is the same as the extension direction of the second side.

[0027] In the audio and video playback device provided by the present disclosure, the arrangement of the speaker units in the first speaker array is the same as the arrangement of the speaker units in the second speaker array.

[0028] In the audio and video playback device provided in the present disclosure, the edge region of the display substrate further includes a third side; the third side is located between the first side and the second side;

[0029] A third speaker array is further provided in the edge area; the third speaker array is located on the third side, and the column direction of the third speaker array is the same as the extension direction of the third side.

[0030] In the audio and video playback device provided in the present disclosure, the edge region of the display substrate further includes a fourth side; the fourth side is located between the first side and the second side and is opposite to the third side;

[0031] A fourth speaker array is further provided in the edge area; the fourth speaker array is located on the fourth side, and the column direction of the fourth speaker array is the same as the extension direction of the fourth side.

[0032] In the audio and video playback device provided by the present disclosure, the arrangement of the speaker units in the third speaker array is the same as the arrangement of the speaker units in the fourth speaker array.

[0033] In the audio and video playback device provided by the present disclosure, a speaker array only includes a plurality of speaker units arranged in a row;

[0034] In the same loudspeaker array, the distance d between two adjacent loudspeaker units satisfies:

[0035] Here, c represents the speed of sound in a set environment, and f represents the set frequency within the sound frequency band of the speaker array.

[0036] In the audio and video playback device provided by the present disclosure, the size of a single side of the orthographic projection of a speaker unit on the display substrate is 50 μm to 5000 μm.

[0037] The beneficial effects of the present disclosure are as follows:

[0038] The present disclosure provides an audio and video playback device, comprising: a display substrate and a speaker unit. The display substrate comprises a display side and a back side opposite to the display side; the display side comprises a display area and an edge area surrounding the display area. The speaker unit is arranged on the display substrate and is located in the edge area of ​​the display side. When playing audio and video, the speaker unit can emit sound directly from the display side of the display substrate. Most of the sound waves emitted by the speaker unit do not need to penetrate the membrane layer of the display substrate when being received by the user, which is beneficial to improving the transmission efficiency of the sound waves, thereby reducing the number of holes opened in the outer shell of the audio and video playback device, and improving the waterproof and dustproof performance and overall aesthetics of the audio and video playback device. In addition, in the embodiment of the present disclosure, the speaker unit is directly arranged on the display substrate, and the speaker unit is supported by the display substrate, which can reduce the components arranged inside the audio and video playback device for supporting the speaker unit, and simplify the structure and volume of the audio and video playback device. The speaker unit is arranged within the edge area of ​​the display substrate, and can also avoid occupying the space used to set the pixel unit in the display area, which is beneficial to ensuring the resolution of the display substrate. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the following briefly introduces the drawings required for use in the embodiments of the present disclosure. Obviously, the drawings introduced below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0040] FIG1 is a schematic diagram of a cross-sectional structure of an audio and video playback device according to an embodiment of the present disclosure;

[0041] FIG2 is a second schematic cross-sectional structural diagram of the audio and video playback device provided by an embodiment of the present disclosure;

[0042] FIG3 is a third schematic diagram of the cross-sectional structure of the audio and video playback device provided in an embodiment of the present disclosure;

[0043] FIG4 is a fourth schematic cross-sectional structural diagram of the audio and video playback device provided in an embodiment of the present disclosure;

[0044] FIG5 is a fifth schematic diagram of the cross-sectional structure of the audio and video playback device provided in an embodiment of the present disclosure;

[0045] FIG6 is a sixth schematic diagram of the cross-sectional structure of the audio and video playback device provided in an embodiment of the present disclosure;

[0046] FIG7 is a schematic structural diagram of a linear speaker array provided in an embodiment of the present disclosure;

[0047] FIG8 is a beam directivity diagram of a linear speaker array with different numbers of speaker units provided by an embodiment of the present disclosure;

[0048] FIG9 is a beam directivity diagram of a linear speaker array having speaker units of different spacings provided by an embodiment of the present disclosure;

[0049] FIG10 is a beam directivity diagram of the same linear speaker array at different sound frequencies provided by an embodiment of the present disclosure;

[0050] FIG11a is a schematic diagram of a top view of a display substrate provided in an embodiment of the present disclosure;

[0051] FIG11 b is a second schematic diagram of a top view of a display substrate provided in an embodiment of the present disclosure;

[0052] FIG11c is a third schematic diagram of a top view of a display substrate provided in an embodiment of the present disclosure;

[0053] FIG11d is a fourth schematic diagram of a top view of a display substrate provided in an embodiment of the present disclosure;

[0054] FIG12 is a fifth schematic diagram of a top view of a display substrate provided in an embodiment of the present disclosure;

[0055] FIG13 is a sixth schematic diagram of a top view of a display substrate provided in an embodiment of the present disclosure;

[0056] FIG14 is a seventh schematic diagram of the top view structure of the display substrate provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0057] In order to make the above-mentioned purposes, features and advantages of the present disclosure more obvious and easy to understand, the present disclosure will be further described below with reference to the accompanying drawings and examples. However, the example embodiments can be implemented in various forms and should not be understood as being limited to the embodiments set forth herein; on the contrary, these embodiments are provided to make the present disclosure more comprehensive and complete, and to fully convey the concepts of the example embodiments to those skilled in the art. The same figure marks in the figures represent the same or similar structures, and their repeated descriptions will be omitted. The words expressing position and direction described in the present disclosure are all explained using the accompanying drawings as examples, but changes can be made as needed, and all changes are included in the scope of protection of the present disclosure. The drawings of the present disclosure are only used to illustrate relative position relationships and do not represent true proportions.

[0058] Currently, the speakers of audio and video playback devices, such as mobile phones, are located on the back of the display screen (the side facing away from the display screen). The sound waves emitted by the speakers must pass through multiple membrane layers of the display screen before they can be received by the user. This results in low sound wave propagation efficiency, especially for mid- and high-frequency sound waves, which suffer significant losses during propagation due to their short wavelengths. To improve sound wave propagation efficiency, speaker holes are often provided in the housing of the audio and video playback device to allow more sound waves to propagate from within the device. However, these holes in the housing of the audio and video playback device are detrimental to the overall aesthetics and are not conducive to improving waterproof and dustproof performance.

[0059] The present disclosure provides an audio and video playback device to solve the above problems.

[0060] FIG1 is a schematic diagram of a cross-sectional structure of an audio and video playback device according to an embodiment of the present disclosure.

[0061] In the embodiment of the present disclosure, the audio and video playback device includes: a display substrate 1 and a speaker unit 2.

[0062] The display substrate 1 includes a display side S1 and a back side S2 opposite to the display side. The display side of the display substrate 1 is divided into a display area AA and an edge area FA surrounding the display area AA. In a specific implementation, a plurality of pixel units are provided in the display area of ​​the display side S1 of the display substrate, and images are displayed by emitting light through the plurality of pixel units. The edge area of ​​the display substrate is usually used to bind the driver chip and to set signal connection lines for connecting the pixel unit and the driver chip, etc., which are not limited here. The shape of the display substrate 1 is adapted to the shape of the audio and video playback device. Normally, the display substrate 1 can be set to a rectangle, square, etc. When applied to a special-shaped device, the display substrate can also be set to a special shape such as a circle.

[0063] The speaker unit 2 is disposed on the display substrate 1 and is located within the edge region FA of the display side S1 of the display substrate. FIG1 only illustrates the speaker unit 2 disposed within the edge region FA on one side of the display substrate 1. In a specific implementation, the edge region FA may be disposed around the display area AA. The number of speaker units 2 may be more than one and distributed within the edge region FA, and this is not limited herein.

[0064] In the embodiment of the present disclosure, the speaker unit 2 is directly arranged on the display substrate 1 and is located on the display side S1 of the display substrate. When playing audio and video, the speaker unit 2 can emit sound directly from the display side S1 of the display substrate. Most of the sound waves emitted by the speaker unit 2 do not need to penetrate the membrane layer of the display substrate when being received by the user, which is beneficial to improving the transmission efficiency of the sound waves, thereby reducing the number of holes opened in the outer shell of the audio and video playback device, and improving the waterproof and dustproof performance and overall aesthetics of the audio and video playback device. In addition, in the embodiment of the present disclosure, the speaker unit 2 is directly arranged on the display substrate 1, and the speaker unit 2 is supported by the display substrate 1, which can reduce the components arranged inside the audio and video playback device for supporting the speaker unit 2, simplifying the structure and volume of the audio and video playback device. The speaker unit 2 is arranged within the edge area FA of the display substrate 1, and can also avoid occupying the space used to set the pixel unit in the display area AA, which is beneficial to ensuring the resolution of the display substrate.

[0065] In some embodiments, the unilateral size of the orthographic projection of a speaker unit 2 on the display substrate 1 is 50 μm to 5000 μm. The speaker is relatively small, which can avoid increasing the frame size of the audio and video playback device. The unilateral size of the orthographic projection of the speaker unit 2 on the display substrate 1 specifically refers to the maximum size of a single side of the orthographic projection of the speaker unit 2 on the display substrate 1. For example, when the orthographic projection of the speaker unit 2 on the display substrate 1 is circular, the unilateral size is the diameter of the circle. When the orthographic projection of the speaker unit 2 on the display substrate 1 is rectangular or square, the unilateral size is the length of the diagonal of the rectangle or square. The orthographic projection of the speaker unit 2 on the display substrate 1 is similar to this and is not further described here.

[0066] Specifically, the specific size of the single side of the orthographic projection of the speaker unit 2 on the display substrate 1 can be set according to the specific type of the audio and video playback device. For example, the audio and video playback device provided in the embodiment of the present disclosure can be specifically a smart watch, a mobile phone, a laptop computer, a television, etc. For different audio and video playback devices, the border of the audio and video playback device has different widths. The border of the audio and video playback device is usually a shell set in the edge area around the audio and video playback device, which is used to protect the display substrate and other components inside the audio and video playback device. It is usually not used for image display. The edge area of ​​the display substrate is correspondingly set within the border of the audio and video playback device. For example, for small-screen audio and video playback devices such as smart watches and mobile phones, the width of the frame is narrow and the requirements for sound intensity are low. The speaker unit 2 can be set to have a smaller size to reduce the width of the edge area of ​​the display substrate, thereby adapting to the frame width of the audio and video playback device. For example, the single-sided size of the orthographic projection of the speaker unit 2 on the display substrate 1 can be set to 50μm to 1000μm, for example, 100μm, which is not limited here; for large-screen audio and video playback devices such as laptops and televisions, the width of the frame is wide and the requirements for sound intensity are high. The speaker unit 2 can be set to have a larger size to increase the sound power and adapt to the frame width of the audio and video playback device. For example, the single-sided size of the orthographic projection of the speaker unit 2 on the display substrate 1 can be set to 3000μm to 5000μm, for example, 4000μm, which is not limited here. In specific implementation, the narrow frame design is achieved by setting the size of the speaker unit 2 to adapt to the frame width of the audio and video playback device.

[0067] FIG2 is a second schematic diagram of the cross-sectional structure of the audio and video playback device provided in an embodiment of the present disclosure.

[0068] In some embodiments, as shown in FIG. 2 , the display substrate 1 includes an array substrate 11 and a light emitting unit 12 disposed on the array substrate.

[0069] The array substrate 11 includes a substrate 111 and a driving circuit layer 112 disposed on the substrate.

[0070] The substrate 111 is located at the bottom of the display substrate 1 and is used to support and carry other film layers of the display substrate. The shape of the substrate 111 is adapted to the overall shape of the display substrate. The substrate 111 includes a display area AA and an edge area FA of the display substrate. The substrate 111 can be made of an insulating material and can be made into a single-layer structure or a stacked structure of multiple film layers, which is not limited here. In some embodiments, the substrate 111 can be made of a rigid material to form a rigid display substrate. In some embodiments, the substrate 111 can be made of a flexible material to form a flexible display substrate, which is not limited here. Since the display substrate requires a high-temperature process during the production process, in the specific implementation, the material of the substrate can be a high-temperature resistant material, such as high-temperature glass. The thickness of the high-temperature glass can be set to 500μm to 1000μm, for example, 800μm, and its maximum temperature resistance can reach above 600°C, for example, 700°C, which is not limited here.

[0071] The driving circuit layer 112 is located on one side of the substrate 111 and is arranged on the same side of the substrate 111 as the speaker unit 2. The light-emitting unit 12 is arranged within the display area AA and is located on the side of the driving circuit layer 112 away from the substrate 111. In a specific implementation, a pixel circuit is provided in the driving circuit layer 112, and the pixel circuit is electrically connected to the light-emitting unit 12, and is used to drive the light-emitting unit 12 to emit light to display an image. In some embodiments, the pixel circuit can be a thin film transistor (TFT) pixel circuit, and a pixel circuit can include a capacitor and multiple thin film transistors to control the lighting or shutting down of the light-emitting unit 12 connected thereto. Multiple TFT pixel circuits can be provided in the driving circuit layer 112 to form an active driving matrix, wherein one TFT pixel circuit is connected to a corresponding light-emitting unit 12 to form a pixel unit, and multiple pixel units can be actively driven by the driving circuit layer 112. In some embodiments, the pixel circuit can also be other types of circuits to achieve active drive or passive drive, which is not limited here.

[0072] In some embodiments, the light-emitting unit 12 may be a light-emitting diode (LED) to form an LED display substrate. For example, the light-emitting unit may be a Mini LED (Mini Light Emitting Diode, Mini LED for short) to form a Mini LED display substrate; the light-emitting unit may be a Micro LED (Micro Light Emitting Diode, Micro LED for short) to form a Micro LED display substrate. Micro LED has a smaller size than Mini LED, which is beneficial to improving the display resolution of the audio and video playback device. In some embodiments, the light-emitting unit 12 may be an organic light-emitting diode (OLED for short) to form an OLED display substrate. In specific implementations, the light-emitting unit 12 may also be other types of light-emitting devices, which are not limited here.

[0073] In some embodiments, the entire drive circuit layer 112 is disposed within the display area AA, thereby reducing the thickness of the array substrate 11 within the edge area FA, making the thickness of the array substrate 11 within the edge area FA less than the thickness of the array substrate 11 within the display area AA. Since the thickness of the array substrate 11 within the edge area FA is smaller, this helps reduce the total thickness of the display substrate after the speaker unit 2 is disposed within the edge area FA, thereby helping to reduce the volume of the audio and video playback device. It should be noted that connecting traces can be disposed within the edge area FA to connect components such as the driver chip disposed within the edge area FA to the circuits in the drive circuit layer 112. The thickness of the connecting traces is thinner than that of the drive circuit layer 112. After the connecting traces are disposed, the thickness of the array substrate 11 in the edge area is still less than the thickness of the array substrate 11 within the display area AA.

[0074] In some embodiments, the driving circuit layer 112 may also be disposed within at least a portion of the edge area FA, although this is not limited herein. In specific implementations, the speaker unit's placement area and the driving circuit layer 112's placement area may not overlap, for example, by disposing the speaker unit on the surface of the substrate 111 exposed by the driving circuit layer 112, thereby controlling the thickness of the display substrate after the speaker unit is disposed. This is not limited herein.

[0075] In some embodiments, in addition to the pixel circuit, the driving circuit layer 112 is also provided with an audio circuit. The audio circuit can be electrically connected to the speaker unit 2 to drive the speaker unit 2 to produce sound. In a specific implementation, the driving circuit layer 112 integrates both display driving functions and audio driving functions. By electrically connecting the speaker unit 2 to the driving circuit layer 112, the speaker unit is driven to produce sound.

[0076] In some embodiments, the speaker unit may be a speaker product and may be fixed to the display substrate by means of an adhesive layer or the like. For example, the speaker unit may be a piezoelectric speaker. A piezoelectric speaker is a sound-generating device made using the inverse piezoelectric effect of a piezoelectric material. It has a simple structure and can be formed into a smaller-sized sound-generating device to adapt to the width of the edge area FA of the display substrate. In the embodiments of the present disclosure, the piezoelectric speaker specifically refers to a salable piezoelectric speaker product, which is usually encapsulated in an insulating housing and has a complete sound-generating structure and sound-generating function, and can be used directly after being obtained.

[0077] FIG3 is a third schematic diagram of the cross-sectional structure of the audio and video playback device provided in an embodiment of the present disclosure.

[0078] In some embodiments, the piezoelectric speaker can be bonded to the display substrate via an adhesive layer, thereby securing the piezoelectric speaker to the display substrate. For example, as shown in FIG3 , the piezoelectric speaker can be directly secured to the substrate 111 exposed by the driving circuit layer via adhesive layer 3. Adhesive layer 3 can be made of commonly used adhesive materials such as organic silicone, epoxy resin, and polyurethane, without limitation.

[0079] In some embodiments, the piezoelectric speaker includes connecting pins. The connecting pins are provided on the surface of the piezoelectric speaker and are electrically connected to the piezoelectric structure encapsulated inside the insulating shell. For example, the piezoelectric structure includes an upper electrode and a lower electrode and a piezoelectric layer located between the upper electrode and the lower electrode. At least two connecting pins can be provided on the surface of the piezoelectric speaker, which are electrically connected to the upper electrode and the lower electrode of the piezoelectric structure respectively. The connecting pins are used for welding leads, and the piezoelectric speaker is electrically connected to the driving circuit layer through the leads, thereby achieving the driving circuit layer driving the piezoelectric speaker to produce sound. For example, as shown in FIG3 , the piezoelectric speaker is provided with two connecting pins, and the two connecting pins are respectively welded to the two leads 4, and are electrically connected to the driving circuit layer 112 through the leads 4.

[0080] FIG4 is a fourth schematic diagram of the cross-sectional structure of the audio and video playback device provided in an embodiment of the present disclosure.

[0081] In some embodiments, the speaker unit may be a speaker structure, which is directly formed on the display substrate through processes such as coating, and does not require a separate packaging structure. This can further reduce the size of the speaker unit, which is beneficial for further reducing the border width of the audio and video playback device. For example, as shown in Figure 4, the speaker structure may be a piezoelectric speaker structure, which includes a first electrode 21, a piezoelectric layer 22, and a second electrode 23 stacked in a direction away from the display substrate. The first electrode 21 and the second electrode 23 can be made of conductive materials such as metal, and the piezoelectric layer 22 can be made of piezoelectric materials such as piezoelectric ceramics, which are not limited here. The first electrode 21 is located on the display substrate and is in direct contact with the display substrate. In specific implementation, the first electrode can be directly formed on the display substrate by deposition, coating, etc., and then the pattern of the first electrode is formed by a patterning process, so that there is no need to set an additional adhesive layer to bond to the display substrate.

[0082] In some embodiments, as shown in FIG. 4 , the first electrode 21 of the piezoelectric speaker structure may be directly formed on the substrate 111 exposed by the driving circuit layer 112 , thereby facilitating reduction in the thickness of the display substrate after the speaker unit 2 is provided.

[0083] FIG5 is a fifth schematic diagram of the cross-sectional structure of the audio and video playback device provided in an embodiment of the present disclosure.

[0084] In some embodiments, as shown in FIG5 , the first electrode 21 and the first conductive layer 1121 in the driving circuit layer are located on the same layer; the second electrode 23 and the second conductive layer 1122 in the driving circuit layer are located on the same layer to simplify the manufacturing process. In the embodiment of the present disclosure, the first electrode 21 and the first conductive layer 1121 in the driving circuit layer are located on the same layer, specifically referring to the first electrode 21 and the first conductive layer 1121 in the driving circuit layer can be manufactured in the same coating process, and the pattern of the first electrode 21 and the pattern of the first conductive layer 1121 in the driving circuit layer can be formed respectively in the same mask process. The situation where the second electrode 23 and the second conductive layer 1122 in the driving circuit layer are located on the same layer is the same and will not be described in detail here. Specifically, the driving circuit layer of the array substrate may include multiple stacked conductive film layers, and adjacent conductive film layers may be separated by an insulating layer. The conductive film layer is used to form the pattern of the pixel circuit. For example, when the pixel circuit is a TFT pixel circuit, the multiple conductive film layers can be used to form the gate, source, drain and other structures of the TFT, as well as to form the connection lines, capacitors and other structures between adjacent TFTs. The multiple conductive film layers in the driving circuit layer may include a first conductive layer 1121 and a second conductive layer 1122, wherein the first conductive layer 1121 and the first electrode 21 of the speaker unit are manufactured in the same mask plate process, so that the first conductive layer 1121 and the first electrode 21 of the speaker unit are located on the same layer, and the second conductive layer 1122 and the first electrode 23 of the speaker unit are manufactured in the same mask plate process, so that the second conductive layer 1122 and the second electrode 23 of the speaker unit are located on the same layer. Since the first conductive layer 1121 and the first electrode 21 are manufactured at the same time, the first conductive layer 1121 and the first electrode 21 are made of the same material, and the second conductive layer 1122 and the second electrode 23 are manufactured at the same time, so the second conductive layer 1122 and the second electrode 23 are made of the same material. The materials for making the first electrode 21 and the materials for making the second electrode 23 can be selected according to actual conditions and are not limited here.

[0085] In some embodiments, the first electrode 21 is electrically connected to the driving circuit layer via a first trace located on the same layer as the first conductive layer 1121; and the second electrode 23 is electrically connected to the driving circuit layer via a second trace located on the same layer as the second conductive layer 1122, thereby simplifying the manufacturing process. Specifically, because the first conductive layer 1121 and the first electrode 21 are located on the same layer, while the patterning of the first conductive layer 1121 and the first electrode 21 is formed through a patterning process, a first connecting trace can be formed on the same layer as the first conductive layer 1121 and the first electrode 21 and used to connect the first conductive layer 1121 and the first electrode 21, thereby electrically connecting the first electrode 21 to the driving circuit layer via the first connecting trace. Since the second conductive layer 1122 and the second electrode 23 are located on the same layer, while the patterns of the second conductive layer 1122 and the second electrode 23 are formed through a patterning process, a second connecting line can be formed on the same layer as the second conductive layer 1122 and the second electrode 23 and used to connect the second conductive layer 1122 and the second electrode 23, so that the second electrode 23 is electrically connected to the driving circuit layer through the second connecting line.

[0086] FIG6 is a sixth schematic diagram of the cross-sectional structure of the audio and video playback device provided in an embodiment of the present disclosure.

[0087] In some embodiments, as shown in Figure 6, a resonant cavity C is defined on the side of the substrate 111 facing away from the piezoelectric speaker structure. Each resonant cavity C corresponds to one piezoelectric speaker structure. The orthographic projection of the piezoelectric speaker structure on the substrate 111 at least partially overlaps with the corresponding resonant cavity C. The provision of the resonant cavity C reduces the thickness of the substrate 111 directly below the piezoelectric speaker structure, forming a diaphragm. During sound production, the piezoelectric speaker structure can drive the diaphragm directly below it to vibrate, increasing the vibration amplitude and allowing the sound waves to oscillate continuously within the resonant cavity, thereby enhancing the sound intensity.

[0088] In some embodiments, as shown in FIG6 , the vibration cavity C is a concave structure that is recessed from the side of the substrate 111 facing away from the speaker unit 2 toward the side closer to the speaker unit 2. In a specific implementation, the vibration cavity C can be formed by etching the side of the substrate 111 facing away from the speaker unit 2, which is not limited here. In some embodiments, the vibration cavity C can also have other structures, which are not limited here.

[0089] In some embodiments, at least one speaker array is provided in the edge area FA of the display substrate. A speaker array includes at least one column of speaker units 2. The number of speaker units 2 in a column of speaker units is at least two.

[0090] FIG7 is a schematic structural diagram of a linear speaker array provided in an embodiment of the present disclosure.

[0091] The inventors of this disclosure have studied the relationship between the number of speaker units 2 included in a column of speaker units in a speaker array and the sound beam directivity of the speaker array, wherein a column of speaker units constitutes a linear speaker array. A speaker array may include at least one linear speaker array arranged side by side in a column direction perpendicular to the column direction of the linear speaker array. As shown in FIG7 , let the beam directivity function D of the speaker array be α It is the ratio of the sound pressure P(α) at ​​a point in the linear loudspeaker array with an angle of α to the maximum sound pressure P(0°) along the axial direction of the loudspeaker array:

[0092] Here, d represents the spacing between two adjacent speaker units in a linear speaker array, n represents the number of speaker units in the linear speaker array, and λ represents the wavelength of the sound wave. The spacing between two adjacent speaker units in a linear speaker array refers to the distance between the centers of the two adjacent speaker units. Specifically, the orthographic projection of a speaker unit on a display substrate is typically a symmetrical shape such as a circle, such as an axially symmetrical shape or a centrally symmetrical shape. Symmetrical shapes typically have a geometric center. The distance between the centers of two speaker units specifically refers to the distance between the geometric centers of the orthographic projections of the two speaker units on the display substrate.

[0093] FIG8 is a beam directivity diagram of a linear speaker array with different numbers of speaker units provided by an embodiment of the present disclosure.

[0094] As shown in Figures 7 and 8, the distance between two adjacent speaker units in the linear speaker array is set. in c is the speed of sound in air, taking c = 340 m / s (the speed of sound in air at standard atmospheric pressure), f is the frequency of the sound wave, and the test frequency f = 1000 Hz is selected, resulting in d = 0.17 m. In Mathlab software, beam directivity simulations were performed on multiple linear speaker arrays with different numbers of speaker units and a spacing of 0.17 m between adjacent speaker units. The beam directivity diagrams of the linear speaker arrays with n = 2 speaker units, n = 2 speaker units, n = 2 speaker units, n = 2 speaker units, n = 2 speaker units, and n = 2 speaker units, respectively, are obtained as shown in Figure 8. As can be seen from Figure 8, as the number of speaker units in the linear speaker array increases, the beam width of the sound wave in polar coordinates becomes narrower and narrower, and the beam directivity of the linear speaker array in space becomes increasingly higher. Therefore, by setting up a speaker array and reasonably increasing the number of speaker units in a single row of speaker units, the purpose of improving the beam directivity of the sound wave can be achieved.

[0095] FIG9 is a beam directivity diagram of a linear speaker array having speaker units with different spacings provided by an embodiment of the present disclosure.

[0096] As shown in Figures 7 and 9, the number of speaker units in multiple linear speaker arrays is the same, and the spacing between adjacent speaker units in different linear speaker arrays is different. The beam directivity simulation of each linear speaker array is performed. In order to avoid spatial aliasing and avoid generating grating lobe beams equal to the size of the main lobe in other directions, during the simulation experiment, the spacing between adjacent speaker units in the linear speaker array is designed to be less than or equal to half the wavelength of the sound wave, that is, to meet In a specific implementation, λ=0.314m (the wavelength of air under standard atmospheric pressure), the number of speaker units in the three linear speaker arrays is 5, the distances between two adjacent speaker units in the three linear speaker arrays are d1=0.17m, d2=0.15m and d3=0.05m respectively, and the beam directivity of the three linear speaker arrays is simulated and tested, and the beam directivity diagrams of the linear speaker arrays with speaker units of different distances are obtained as shown in Figure 9. As can be seen from Figure 9, as the distance between two adjacent speaker units in the linear speaker array decreases, the width of the sound wave beam first decreases and then increases, indicating that when the number of speaker units in the linear speaker array is the same, the distance between two adjacent speaker units is less than and close When , the width of the sound wave beam is small, and the linear speaker array has better directivity.

[0097] FIG10 is a beam directivity diagram of the same linear speaker array at different sound frequencies provided by an embodiment of the present disclosure.

[0098] As shown in Figures 7 and 10, the beam directivity simulation of the same linear speaker array is performed at different sound frequencies. In specific implementation, the number of speaker units in the linear speaker array is set to 5, and the spacing between adjacent speaker units is 0.05m. The beam directivity simulation of the linear speaker array is performed at frequencies of 1000Hz, 4000Hz, 7000Hz, 10000Hz, 13000Hz, and 16000Hz, respectively, to obtain the beam directivity diagram of the same linear speaker array at different sound frequencies as shown in Figure 10. It can be seen from Figure 10 that as the sound wave frequency increases, the width of the sound wave beam becomes smaller and smaller, and the directivity of the linear speaker array becomes better and better. In specific implementation, the audio and video playback device can be set to have a larger sound frequency to improve the directivity of the sound.

[0099] In a specific implementation, among a plurality of speaker units located in the same column in the speaker array, that is, in a linear speaker array in the speaker array, the distance d between two adjacent speaker units satisfies the following conditions:

[0100] Among them, c represents the sound speed in the set environment, and f represents the set frequency in the sound frequency band of the speaker array. Specifically, the set environment specifically refers to the working environment of the audio and video playback device. Due to different working environments, the sound speed in the environment may be different. The distance between two adjacent speaker units in the same column in the speaker array of the audio and video playback device needs to be set according to the specific environment. For example, in a conventional working environment, the sound speed in air under a standard atmospheric pressure can be c = 340m / s. In some embodiments, the set frequency in the sound frequency band of the speaker array can be a certain frequency in the sound frequency band of the speaker array. For example, all the sound frequencies of a certain speaker array cover the entire frequency band of 0.1KHz to 20KHz, then the set frequency f in the sound frequency band of the speaker array can take a specific value in the frequency band of 0.1KHz to 20KHz, such as 0.1KHz, 1000Hz or 20KHz, etc., which is not limited here. In some embodiments, since the directivity of sound increases with increasing sound frequency of a linear speaker array, in a specific implementation, the speaker array only needs to have high directivity at the minimum frequency within its sound frequency band, so that the speaker array can meet high directivity throughout its entire sound frequency band. For example, if the entire sound frequency band of the speaker array is 0.1 kHz to 20 kHz, then the set frequency f within the sound frequency band of the speaker array can be set to 0.1 kHz to calculate the spacing between adjacent speaker units. In some embodiments, the set frequency within the sound frequency band of the speaker array can be a frequency within the optimal sound frequency band of the speaker array. For example, if the entire sound frequency of a speaker array covers the entire frequency band of 0.1 kHz to 20 kHz, and its optimal sound frequency band is 1 kHz to 20 kHz, then the set frequency f within the sound frequency band of the speaker array can be a specific value within the frequency band of 1 kHz to 20 kHz, such as 1 kHz, 2 kHz, or 20 kHz, etc., without limitation herein. The optimal sound frequency band of the speaker array refers to the operating frequency band in which the speaker array exhibits better sound performance. For example, for high-frequency speakers, the operating frequency band is generally 6kHz to 22kHz, for mid-frequency speakers, the operating frequency band is generally 200Hz to 6kHz, and for low-frequency speakers, the operating frequency band is generally 16Hz to 200Hz. The operating frequency bands of different speaker units may be different, which is not limited here. In some embodiments, the sound frequency frequently used by the speaker array is about 1000hHz, so the set frequency f within the sound frequency band of the speaker array can be directly taken as 1000hHz to calculate the distance between two adjacent speaker units in the linear speaker array, which is not limited here.

[0101] In some embodiments, among a plurality of speaker units located in the same column of a speaker array, a distance d between two adjacent speaker units satisfies the following condition: And d is less than To ensure that the speaker array has high beam directivity, d should be within a certain range. For example, d satisfies: No limitation is given here.

[0102] Figure 11a is one of the schematic diagrams of the top view structure of the display substrate provided in the embodiment of the present disclosure; Figure 11b is the second schematic diagram of the top view structure of the display substrate provided in the embodiment of the present disclosure; Figure 11c is the third schematic diagram of the top view structure of the display substrate provided in the embodiment of the present disclosure; Figure 11d is the fourth schematic diagram of the top view structure of the display substrate provided in the embodiment of the present disclosure.

[0103] In some embodiments, as shown in Figures 11a to 11d, the edge area FA of the display substrate includes a first side S11 and a second side S12 that are opposite to each other. A first speaker array M1 and a second speaker array M2 are provided in the edge area FA. The first speaker array M1 is located on the first side S11, and the column direction of the first speaker array M1 is the same as the extension direction X1 of the first side S11. The second speaker array M2 is located on the second side S12, and the column direction of the second speaker array M2 is the same as the extension direction X2 of the second side S12. The first speaker array M1 and the second speaker array M2 are respectively provided on the first and second opposite sides of the edge area of ​​the display substrate, thereby achieving a stereo effect.

[0104] In some embodiments, as shown in FIG11a , the first speaker array M1 and the second speaker array M2 are symmetrically arranged on the first side S11 and the second side S12 of the edge region of the display substrate, so that the arrangement of the speaker units 2 in the first speaker array M1 is the same as the arrangement of the speaker units 2 in the second speaker array M2. The arrangement of the speaker units 2 in the first speaker array M1 is the same as the arrangement of the speaker units 2 in the second speaker array M2, which means that the number and arrangement of the speaker units 2 in the first speaker array M1 are the same as the number and arrangement of the speaker units 2 in the second speaker array M2. For example, as shown in FIG11a , the first speaker array M1 and the second speaker array M2 can both include only a plurality of speaker units 2 arranged in a row, that is, the first speaker array and the second speaker array each include only one linear speaker array. The first speaker array M1 includes n speaker units, and the second speaker array M2 also includes n speaker units. In the first speaker array M1, the spacing between adjacent speaker units 2 is d1, and in the second speaker array M2, the spacing between adjacent speaker units 2 is also d1. The first speaker array M1 and the second speaker array M2 are symmetrical, achieving better directivity and stereo effects. In specific implementations, the spacing d1 between adjacent speaker units in the first speaker array M1 and the second speaker array M2 can be set to be less than 0.17m, and the sound frequencies of the first speaker array M1 and the second speaker array M2 can be both 1kHz or above, without limitation here.

[0105] In some embodiments, the number of speaker units 2 in the same column of the first speaker array M1 can be set to be different from the number of speaker units 2 in the same column of the second speaker array M2, and the spacing between adjacent speaker units 2 in the same column of the first speaker array M1 is different from the spacing between adjacent speaker units 2 in the same column of the second speaker array M2. For example, as shown in FIG. 11b, both the first speaker array M1 and the second speaker array M2 can include only a plurality of speaker units 2 arranged in a single column, that is, both the first speaker array and the second speaker array include only one linear speaker array. The first speaker array M1 includes n - 2 speaker units 2, and the second speaker array M2 includes n speaker units 2. Among the plurality of speaker units 2 arranged in a single column in the first speaker array M1, the spacing between adjacent two speaker units 2 is d2, and among the plurality of speaker units 2 arranged in a single column in the second speaker array M2, the spacing between adjacent two speaker units 2 is d1, where d2 > d1. In specific implementation, the spacing d2 between adjacent two speaker units in the first speaker array M1 and the spacing d1 between adjacent two speaker units in the second speaker array M2 can be respectively set to be less than 0.17 m, and the sounding frequencies of both the first speaker array M1 and the second speaker array M2 are 1 kHz and above, which are not limited herein.

[0106] In some embodiments, the number of speaker units 2 in the same column of the first speaker array M1 can be set to be the same as the number of speaker units 2 in the same column of the second speaker array M2, and the spacing between adjacent speaker units 2 in the same column of the first speaker array M1 is different from the spacing between adjacent speaker units 2 in the same column of the second speaker array M2. For example, as shown in FIG. 11c, both the first speaker array M1 and the second speaker array M2 can include only a plurality of speaker units 2 arranged in a single column, that is, both the first speaker array and the second speaker array include only one linear speaker array. The first speaker array M1 includes n speaker units 2, and the second speaker array M2 includes n speaker units 2. Among the plurality of speaker units 2 arranged in a single column in the first speaker array M1, the spacing between adjacent two speaker units 2 is uniformly d2. Among the plurality of speaker units 2 arranged in a single column in the second speaker array M2, the spacing between adjacent two speaker units 2 in some speaker units 2 is d3, and the spacing between adjacent two speaker units 2 in some speaker units 2 is d4, where d3 < d4. In specific implementation, it can be set that d3 < d2 < d4 < 0.17 m, and the sounding frequencies of both the first speaker array M1 and the second speaker array M2 are 1 kHz and above, which are not limited herein. <>

[0107] In some embodiments, the number of speaker units 2 in the same row of the first speaker array M1 can be different from the number of speaker units 2 in the same row of the second speaker array M2, and the spacing between adjacent speaker units 2 in the same row of the first speaker array M1 can be the same as the spacing between adjacent speaker units 2 in the same row of the second speaker array M2. For example, as shown in Figure 11d, the first speaker array M1 and the second speaker array M2 can each include only a plurality of speaker units 2 arranged in a row, that is, the first speaker array and the second speaker array each include only a linear speaker array. The first speaker array M1 includes n+1 speaker units 2, and the second speaker array M2 includes n speaker units 2. Among the plurality of speaker units 2 arranged in a row of the first speaker array M1, the spacing between two adjacent speaker units 2 is d2, and among the plurality of speaker units 2 arranged in a row of the second speaker array M2, the spacing between two adjacent speaker units 2 is also d2. In a specific implementation, d2 can be set to less than 0.17m, and the sound frequency of both the first speaker array M1 and the second speaker array M2 is 1kHz or above, without limitation here.

[0108] FIG12 is a fifth schematic diagram of the top view structure of the display substrate provided in an embodiment of the present disclosure.

[0109] In some embodiments, as shown in FIG12 , the edge area FA of the display substrate further includes a third side S13. The third side S13 is located between the first side S11 and the second side S12. A third speaker array M3 is also disposed within the edge area FA. The third speaker array M3 is located on the third side S13 of the display substrate edge area FA, and the column direction of the third speaker array M3 is aligned with the extension direction X3 of the third side S13. By disposing the third speaker array M3 on the third side S13 of the display substrate edge area FA, the stereo effect can be further enhanced.

[0110] In some embodiments, as shown in FIG. 12, it may be set that the first speaker array M1, the second speaker array M2, and the third speaker array M3 each only include a plurality of speaker units 2 arranged in a column, that is, the first speaker array M1, the second speaker array M2, and the third speaker array M3 each only include a linear speaker array. And it may be set that the number of speaker units 2 included in the first speaker array M1, the second speaker array M2, and the third speaker array M3 is the same. For example, as shown in FIG. 12, the number of speaker units 2 in a column of speaker units in the first speaker array M1, the second speaker array M2, and the third speaker array M3 is n each. According to the actual situation, it may be set that the spacing between two adjacent speaker units in the first speaker array M1 is the same as the spacing between two adjacent speaker units in the second speaker array M2, and different from the spacing between two adjacent speaker units in the third speaker array M3. For example, as shown in FIG. 12, the spacing between two adjacent speaker units in the first speaker array M1 and the spacing between two adjacent speaker units in the second speaker array M2 are both d1, and the spacing between two adjacent speaker units in the third speaker array M3 is d5. In specific implementation, it may be set that d1 < d5 < 0.17m, and the sounding frequencies of the first speaker array M1, the second speaker array M2, and the third speaker array M3 are all 1 kHz and above, which is not limited herein.

[0111] FIG. 13 is a sixth top view structural schematic diagram of a display substrate provided by an embodiment of the present disclosure.

[0112] In some embodiments, as shown in FIG. 13, the edge region FA of the display substrate further includes a fourth side S14. The fourth side S14 is located between the first side S11 and the second side S12 and is opposite to the third side S13. A fourth speaker array M4 is further provided in the edge region FA. The fourth speaker array M4 is located on the fourth side S14 of the edge region FA, and the column direction of the fourth speaker array M4 is the same as the extension direction X4 of the fourth side. By providing the fourth speaker array M4 on the fourth side S14 of the edge region FA of the display substrate, the stereo effect can be further improved.

[0113] In some embodiments, as shown in FIG13 , a third speaker array M3 and a fourth speaker array M2 may be symmetrically arranged on the third side S13 and the fourth side S14 of the edge region of the display substrate, so that the arrangement of the speaker units 2 in the third speaker array M3 is the same as the arrangement of the speaker units 2 in the fourth speaker array M4. The arrangement of the speaker units in the third speaker array is the same as the arrangement of the speaker units in the fourth speaker array, specifically referring to the number and arrangement of the speaker units 2 in the third speaker array M3 being the same as the number and arrangement of the speaker units 2 in the fourth speaker array M4. The specific implementation may refer to the arrangement when the arrangement of the speaker units in the first speaker array is the same as the arrangement of the speaker units in the second speaker array, and detailed description thereof is omitted here.

[0114] FIG14 is a seventh schematic diagram of the top view structure of the display substrate provided in an embodiment of the present disclosure.

[0115] In some embodiments, the number of speaker units 2 in the same column of the first speaker array M1, the number of speaker units 2 in the same column of the second speaker array M2, the number of speaker units 2 in the same column of the third speaker array M3, and the number of speaker units 2 in the same column of the fourth speaker array M4 may be set to be not exactly the same, and the spacing between adjacent speaker units 2 in the same column of the first speaker array M1, the spacing between adjacent speaker units 2 in the same column of the second speaker array M2, the spacing between adjacent speaker units 2 in the same column of the third speaker array M3, and the spacing between adjacent speaker units 2 in the same column of the fourth speaker array M4 may be set to be not exactly the same. For example, as shown in FIG. 14, it may be set that the first speaker array M1, the second speaker array M2, the third speaker array M3, and the fourth speaker array M4 each include only a plurality of speaker units 2 arranged in a column, that is, the first speaker array M1, the second speaker array M2, the third speaker array M3, and the fourth speaker array M4 each include only one linear speaker array. Among them, the number of speaker units in the first speaker array M1 is n - 2, the number of speaker units in the second speaker array M2 is n - 1, the number of speaker units in the third speaker array M3 is n, and the number of speaker units in the fourth speaker array M4 is n - 2. Among the plurality of speaker units 2 arranged in a column in the first speaker array M1, the spacing between adjacent two speaker units 2 in some speaker units 2 is d6, and the spacing between adjacent two speaker units 2 in some speaker units 2 is d7; among the plurality of speaker units 2 arranged in a column in the second speaker array M2, the spacing between adjacent two speaker units 2 in some speaker units 2 is d6, and the spacing between adjacent two speaker units 2 in some speaker units 2 is d7; among the plurality of speaker units 2 arranged in a column in the third speaker array M3, the spacing between adjacent two speaker units 2 is d8; among the plurality of speaker units 2 arranged in a column in the fourth speaker array M4, the spacing between adjacent two speaker units 2 is d9. In specific implementation, it may be set that d6 < d8 < d7 < d9 < 0.17m, and the sound generation frequencies of the first speaker array M1, the second speaker array M2, the third speaker array M3, and the fourth speaker array M4 are all 1 kHz and above, which are not limited herein.

[0116] Although the preferred embodiments of the present disclosure have been described, those skilled in the art can make additional changes and modifications to these embodiments once they learn the basic creative concepts. Therefore, the appended claims are intended to be construed to include the preferred embodiments as well as all changes and modifications falling within the scope of the present disclosure.

[0117] Obviously, those skilled in the art may make various changes and modifications to the present disclosure without departing from the spirit and scope of the present disclosure. Thus, if these modifications and variations of the present disclosure fall within the scope of the claims of the present disclosure and their equivalents, the present disclosure is intended to include these modifications and variations.

Claims

1. An audio and video playback device, wherein: include: display substrate; The display substrate includes a display side and a back side opposite to the display side; The display side includes a display area and an edge area surrounding the display area; The speaker unit is arranged on the display substrate and located in the edge area of the display side.

2. The audio and video playback device according to claim 1, wherein: The display substrate includes an array substrate; The array substrate includes: substrate; The driving circuit layer is located on one side of the substrate; the driving circuit layer is located within the display area; and the speaker unit and the driving circuit layer are located on the same side of the substrate.

3. The audio and video playback device according to claim 2, wherein: The speaker unit is electrically connected to the driving circuit layer.

4. The audio and video playback device according to claim 2 or 3, wherein: The speaker unit comprises: a first electrode, located on the display substrate and in direct contact with the display substrate; a piezoelectric layer, located on a side of the bottom electrode facing away from the display substrate; The second electrode is located on a side of the piezoelectric layer facing away from the first electrode.

5. The audio and video playback device according to claim 4, wherein: A vibration cavity is formed on a side of the substrate facing away from the speaker unit; One of the vibration chambers corresponds to one of the speaker units; the orthographic projection of the speaker unit on the substrate at least partially overlaps with the corresponding vibration chamber.

6. The audio and video playback device according to claim 4, wherein: The first electrode and the first conductive layer in the driving circuit layer are located in the same layer; the second electrode and the second conductive layer in the driving circuit layer are located in the same layer.

7. The audio and video playback device according to claim 6, wherein: The first electrode is electrically connected to the driving circuit layer via a first trace located on the same layer as the first conductive layer; The second electrode is electrically connected to the driving circuit layer through a second trace located on the same layer as the second conductive layer.

8. The audio and video playback device according to claim 2 or 3, wherein: The speaker unit is a piezoelectric speaker; the piezoelectric speaker is bonded to the display substrate via an adhesive layer located between the piezoelectric speaker and the display substrate.

9. The audio and video playback device according to claim 8, wherein: The piezoelectric speaker includes connecting pins; the connecting pins are used for welding leads, and the piezoelectric speaker is electrically connected to the driving circuit layer through the leads.

10. The audio and video playback device according to any one of claims 1 to 9, wherein: At least one speaker array is arranged in the edge area; one speaker array includes at least one column of speaker units.

11. The audio and video playback device according to claim 10, wherein: The edge region of the display substrate includes a first side and a second side opposite to each other; A first speaker array and a second speaker array are provided in the edge area; The first speaker array is located on the first side, and a column direction of the first speaker array is the same as an extension direction of the first side; The second speaker array is located on the second side, and a column direction of the second speaker array is the same as an extension direction of the second side.

12. The audio and video playback device according to claim 11, wherein: An arrangement of the speaker units in the first speaker array is the same as an arrangement of the speaker units in the second speaker array.

13. The audio and video playback device according to claim 11, wherein: The edge region of the display substrate further includes a third side; the third side is located between the first side and the second side; A third speaker array is further provided in the edge area; the third speaker array is located on the third side, and a column direction of the third speaker array is the same as an extension direction of the third side.

14. The audio and video playback device according to claim 13, wherein: The edge region of the display substrate further includes a fourth side; the fourth side is located between the first side and the second side and is opposite to the third side; A fourth speaker array is further provided in the edge area; the fourth speaker array is located on the fourth side, and a column direction of the fourth speaker array is the same as an extension direction of the fourth side.

15. The audio and video playback device according to claim 14, wherein: The arrangement of the speaker units in the third speaker array is the same as the arrangement of the speaker units in the fourth speaker array.

16. The audio and video playback device according to any one of claims 10 to 15, wherein: One of the speaker arrays only comprises a plurality of the speaker units arranged in a row; In the same speaker array, the distance d between two adjacent speaker units satisfies: Wherein, c represents the speed of sound in a set environment, and f represents the set frequency within the sound frequency band of the speaker array.

17. The audio and video playback device according to any one of claims 1 to 16, wherein: The size of a single side of the orthographic projection of one of the speaker units on the display substrate is 50 μm to 5000 μm.

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