Sound-emitting display screen based on PVDF film

Abstract

The utility model relates to a kind of based on PVDF film's sounding display screen, including display panel and sounding assembly, display panel includes the panel main body and first polaroid that are sequentially stacked;Sounding assembly is between the panel main body and the first polaroid, sounding assembly includes PVDF film, PVDF film is provided with first conductive layer in the side away from the panel main body, first grid support layer is provided between first conductive layer and first polaroid, PVDF film is provided with second conductive layer in the side close to panel main body, second grid support layer is provided between second conductive layer and panel main body.The utility model can be based on the sounding assembly of PVDF film and display screen are highly integrated, to ensure sound output quality while realizing the screen thinning.

Description

Technical Field

[0001] This utility model relates to the field of display equipment technology, and in particular to a sound-emitting display screen based on PVDF film. Background Technology

[0002] In traditional display structures, the speaker and display are separate. The speaker is relatively large, making it unsuitable for thinner and smaller devices. For example, in next-generation display devices such as thin and light laptops, tablets, and miniaturized wearable devices like smartwatches, there is often insufficient space to install traditional speaker structures. Furthermore, the sound propagation of traditional speakers is relatively diffuse, easily affected by environmental interference, and struggles to achieve accurate, immersive sound effects. To address these issues, piezoelectric materials are increasingly used in sound generation. Polyvinylidene fluoride (PVDF), as an excellent piezoelectric polymer, has become an ideal material for next-generation thin-film speakers due to its good flexibility, thinness, and outstanding piezoelectric properties and inverse piezoelectric effect. When an electrical signal is applied to a PVDF film, the inverse piezoelectric effect causes the film to deform and induce vibrations in the surrounding air, thus producing sound output. Compared to traditional speakers, PVDF film-based speakers offer advantages such as ultra-thin design, high-efficiency energy conversion and low energy consumption, and directional sound generation.

[0003] However, existing PVDF film sound-generating devices cannot be effectively integrated with displays to achieve both a thinner screen and accurate sound output, thus failing to meet user needs. Utility Model Content

[0004] Therefore, the technical problem to be solved by this utility model is to provide a sound-generating display screen based on PVDF film, which integrates the PVDF film sound-generating device with the display screen, so as to achieve a thinner and lighter screen while ensuring accurate sound output.

[0005] To solve the above-mentioned technical problems, this utility model provides a sound-emitting display screen based on PVDF film, comprising:

[0006] The display panel includes a panel body and a first polarizer stacked sequentially.

[0007] A sound-generating component is located between the panel body and the first polarizer. The sound-generating component includes a PVDF film. A first conductive layer is disposed on the side of the PVDF film away from the panel body. A first mesh support layer is disposed between the first conductive layer and the first polarizer. A second conductive layer is disposed on the side of the PVDF film close to the panel body. A second mesh support layer is disposed between the second conductive layer and the panel body.

[0008] In one embodiment of the present invention, the panel body includes a first glass substrate, the sound-generating component is located between the first glass substrate and the first polarizer, the second mesh support layer is attached to the first glass substrate, and the first mesh support layer is attached to the first polarizer.

[0009] In one embodiment of this utility model, both the first mesh support layer and the second mesh support layer are provided with a plurality of hollow holes, and the plurality of hollow holes are arranged in an array.

[0010] In one embodiment of this utility model, the area of ​​the perforated hole is 2 to 7 mm².

[0011] In one embodiment of this utility model, the thickness of the first mesh support layer and / or the second mesh support layer is 100-500 μm.

[0012] In one embodiment of this utility model, the thickness of the PVDF film is 20-200 μm.

[0013] In one embodiment of this utility model, the thickness of both the first conductive layer and the second conductive layer is 0.5 to 1 μm.

[0014] In one embodiment of this utility model, the display panel is a liquid crystal panel, and the panel body includes a first glass substrate, and a liquid crystal layer, a second glass substrate, a second polarizer and a backlight module arranged sequentially along a direction away from the first glass substrate.

[0015] In one embodiment of this invention, both the first conductive layer and the second conductive layer are made of silver nanowires, and the thickness of both the first conductive layer and the second conductive layer is 0.6 to 1 μm.

[0016] In one embodiment of the present invention, the display panel is an organic light-emitting panel, which includes a first glass substrate and an anode layer, an organic light-emitting layer and a cathode layer arranged sequentially along a direction away from the first glass substrate.

[0017] The above-mentioned technical solution of this utility model has the following advantages compared with the prior art:

[0018] The PVDF film-based sound-emitting display screen of this invention highly integrates the PVDF film sound-emitting component with the display screen, avoiding the limitations of traditional speakers on the overall layout and further saving structural space. It achieves high integration and can achieve high sound pressure and clear sound quality within a limited volume, thereby improving sound quality. It also facilitates the formation of an ultra-thin structure, ensuring the lightweight and thin requirements of the display device. Attached Figure Description

[0019] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0020] Figure 1 This is a schematic diagram of the structure of the first embodiment of the sound-emitting display screen based on PVDF film of this utility model;

[0021] Figure 2 This is a structural schematic diagram of one configuration of the first grid support layer in this utility model;

[0022] Figure 3 This is a schematic diagram of another configuration of the first grid support layer in this utility model;

[0023] Figure 4 This is a schematic diagram of the structure of a second embodiment of the sound-emitting display screen based on PVDF film of this utility model;

[0024] Figure 5 This is a schematic diagram of the third embodiment of the sound-emitting display screen based on PVDF film of this utility model;

[0025] Explanation of reference numerals in the instruction manual:

[0026] 10. Display panel; 101. First polarizer; 102. Panel body; 1021. First glass substrate; 1022. Liquid crystal layer; 1023. Second glass substrate; 1024. Second polarizer; 1025. Backlight module; 1026. Anode layer; 1027. Organic light-emitting layer; 1028. Cathode layer;

[0027] 20. Sound-generating component; 201. PVDF film; 202. First conductive layer; 203. Second conductive layer; 204. First mesh support layer; 2041. Hole; 205. Second mesh support layer; Detailed Implementation

[0028] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments described are not intended to limit the present invention. Obviously, the described embodiments are only some embodiments of the present disclosure, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present disclosure or its application or use.

[0029] In the description of this utility model, it should be understood that the terms "vertical," "upper," "lower," "top," "side," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] Existing PVDF film sound-generating devices cannot be effectively integrated with displays to achieve both a thinner screen and accurate sound output, thus failing to meet user needs. Therefore, this embodiment provides a PVDF film-based sound-generating display screen to improve upon the aforementioned problems.

[0032] The structure of the PVDF thin-film-based sound-emitting display screen of this utility model will be further described below with reference to specific embodiments.

[0033] Example 1

[0034] See Figure 1 This embodiment discloses a sound-emitting display screen based on PVDF film 201, including a display panel 10 and a sound-emitting component 20;

[0035] The display panel 10 includes a panel body 102 and a first polarizer 101 stacked in sequence; wherein, the first polarizer 101 is an optical film with selective light transmission capability, which can convert natural light (unpolarized light) into linearly polarized light vibrating in a specific direction, or filter polarized light.

[0036] The aforementioned sound-generating component 20 is located between the panel body 102 and the first polarizer 101;

[0037] The sound-generating component 20 includes a PVDF (polyvinylidene fluoride) film. A first conductive layer 202 is disposed on the side of the PVDF film 201 away from the panel body 102. A first mesh support layer 204 is disposed between the first conductive layer 202 and the first polarizer 101. A second conductive layer 203 is disposed on the side of the PVDF film 201 close to the panel body 102. A second mesh support layer 205 is disposed between the second conductive layer 203 and the panel body 102.

[0038] The first grid support layer 204 and the second grid support layer 205 can provide the PVDF film 201 with sufficient free vibration space, thereby ensuring its normal sound generation function.

[0039] The aforementioned sound-emitting display screen based on PVDF film 201 also includes a driving circuit with two inputs and two outputs. The two inputs are used to receive audio signals, and one of the two outputs is connected to the first conductive layer 202, while the other is connected to the second conductive layer 203, thereby forming an alternating electric field between the two conductive layers. Due to the piezoelectric properties of the PVDF film, its molecular structure undergoes periodic stretching and vibration under the action of the alternating electric field. This vibration is transmitted to the surrounding air medium, generating sound waves corresponding to the input audio signal, thus realizing the sound-emitting function.

[0040] The first conductive layer 202 and the second conductive layer 203 are respectively coated on the upper and lower surfaces of the PVDF film 201.

[0041] The aforementioned sound-emitting display screen based on PVDF film 201 has the following advantages:

[0042] 1. By abandoning the traditional magnetic circuit system and cavity structure, the sound-generating component 20 is integrated into the display screen in the form of a thin film, which effectively improves the space utilization rate, thereby significantly reducing the thickness of the device and making it easier to form an ultra-thin structure, thus meeting the needs of modern display devices for thinness and seamless integration.

[0043] 2. PVDF piezoelectric materials have high electro-acoustic conversion efficiency and low driving power, which effectively reduces overall energy consumption compared to traditional dynamic loudspeakers, thus achieving high efficiency and energy saving.

[0044] 3. It adopts a high-voltage PVDF thin film 201, which can achieve high sound pressure and clear sound quality within a limited volume, thereby improving sound quality.

[0045] 4. The sound-generating component 20 is highly integrated with the display screen, avoiding the limitations of traditional speakers on the overall layout of the machine and further saving structural space, thus achieving a high degree of integration.

[0046] Furthermore, the panel body 102 includes a first glass substrate 1021, a sound-generating component 20 located between the first glass substrate 1021 and the first polarizer 101, a second grid support layer 205 bonded to the first glass substrate 1021, and a first grid support layer 204 bonded to the first polarizer 101.

[0047] To ensure the stability and vibration effect of the PVDF film 201 during sound generation, a first grid support layer 204 is provided between the first conductive layer 202 and the first polarizer 101, and a second grid support layer 205 is provided between the second conductive layer 203 and the first glass substrate 1021. The first grid support layer 204 and the second grid support layer 205 have a hollow structure of a certain thickness, and each hollow hole 2041 can form an independent cavity in the thickness direction to realize unit vibration sound generation.

[0048] In some implementations, see Figures 2-3 Both the first grid support layer 204 and the second grid support layer 205 are hollow structures, and both the first grid support layer 204 and the second grid support layer 205 are provided with multiple hollow holes 2041, which are arranged in an array. For example, the shape of the hollow holes 2041 can be quadrilateral, hexagon, etc., so that the grid support layer presents a quadrilateral grid or a hexagonal honeycomb grid.

[0049] Each of the aforementioned perforations 2041 can form a separate cavity in the thickness direction, which can ensure that the gas in these cavities can vibrate with the PVDF film, thereby ensuring the sound generation effect and avoiding sound generation failure.

[0050] Furthermore, the area of ​​the perforated hole 2041 is 2 to 7 mm². For example, the area of ​​the perforated hole 2041 can be 2 mm², 3 mm², 4 mm², 5 mm², 6 mm², 7 mm², etc.

[0051] The area of ​​a single 2041 perforated hole has a direct impact on the sound performance. It is necessary to balance the gas flow space required for the vibration of the PVDF layer with the structural stability of the grid support layer to ensure sound production. If the area is too small, the gas capacity will be insufficient, and if it is too large, the sound production stability will be affected due to the decrease in support strength.

[0052] The first grid support layer 204 and the second grid support layer 205 are both flexible layers with elasticity. Materials that combine elasticity and strength can be selected, such as epoxy resin layer, UV adhesive layer, polyurethane layer, polylactic acid (PLA) layer, etc.

[0053] In some embodiments, the thickness of the first mesh support layer 204 and / or the second mesh support layer 205 is 10 to 500 μm.

[0054] Furthermore, the thickness of the first grid support layer 204 and / or the second grid support layer 205 is 100–500 μm. For example, it can be 100 μm, 150 μm, 200 μm, 250 μm, 300 μm, 350 μm, 400 μm, 450 μm, 500 μm, etc.

[0055] The thickness of the aforementioned mesh support layer determines the size of the vibration space, which in turn affects the sound quality.

[0056] In some embodiments, the thickness of the PVDF film 201 is 20–200 μm.

[0057] Furthermore, the thickness of the PVDF film 201 is 50–120 μm.

[0058] For example, the thickness of the PVDF film 201 can be 20μm, 25μm, 30μm, 40μm, 50μm, 60μm, 70μm, 80μm, 85μm, 90μm, 95μm, 100μm, 105μm, 110μm, 115μm, 120μm, 125μm, 130μm, 140μm, 150μm, etc.

[0059] The thickness of PVDF film 201 affects sound quality. The greater the thickness, the higher the structural strength, fatigue resistance, and resistance to external forces of the film, making it less prone to damage under long-term vibration. However, excessive thickness will affect the thinness and lightness of the product; while insufficient thickness will reduce stability and make it prone to fatigue damage.

[0060] In some embodiments, the thickness of both the first conductive layer 202 and the second conductive layer 203 is 0.5 to 1 μm.

[0061] In some embodiments, the first conductive layer 202 and the second conductive layer 203 may both be made of at least one of poly-3,4-ethylenedioxythiophene / polystyrene sulfonate (PEDOT:PS), metal nanowires, indium tin oxide, or conductive silver paste.

[0062] The first conductive layer 202 and the second conductive layer 203 are both prepared on the surface of the PVDF film 201 by processes such as screen printing, spin coating, or spraying, forming good adhesion and electrical contact. These conductive layers are connected to an external signal driving circuit, thereby accurately transmitting the amplified audio electrical signal to the PVDF film.

[0063] The aforementioned display panel 10 may be of the type of liquid crystal display panel (LCD), light-emitting diode display panel (LED), or organic light-emitting display panel (OLED).

[0064] The PVDF film-based sound-generating display screen described above highly integrates the PVDF film sound-generating component with the display screen, enabling the display panel to have excellent sound quality while also presenting a thinner and lighter form compared to traditional vibration-generating screens, thereby further improving the overall performance and user experience of the display device.

[0065] Example 2

[0066] participate Figure 4 The main difference between this embodiment and Embodiment 1 is that: in this embodiment, the display panel 10 is a liquid crystal panel (LCD), and the panel body 102 includes a first glass substrate 1021, and a liquid crystal layer 1022, a second glass substrate 1023, a second polarizer 1024 and a backlight module 1025 arranged sequentially along the direction away from the first glass substrate 1021.

[0067] The backlight module 1025 is mainly used to provide a uniform light source.

[0068] A polarizer is an optical film with selective light transmission capability, which can convert unpolarized light into linearly polarized light vibrating in a specific direction, or filter polarized light. Specifically, the second polarizer 1024 is used to convert the unpolarized light emitted by the backlight module 1025 into linearly polarized light.

[0069] The polarization direction of the first polarizer 101 is at a certain angle to that of the second polarizer 1024, which is used to control whether light can ultimately pass through the screen and enter the human eye.

[0070] In some embodiments, both the first conductive layer 202 and the second conductive layer 203 are made of silver nanowires.

[0071] In some embodiments, the thickness of both the first conductive layer 202 and the second conductive layer 203 is 0.6 to 1 μm.

[0072] Furthermore, the thickness of the first conductive layer 202 and the second conductive layer 203 is 0.6 to 0.9 μm, for example, the thickness of the first conductive layer 202 and the second conductive layer 203 is 0.8 μm.

[0073] In some embodiments, the thickness of the PVDF film 201 is 15 to 25 μm, for example, the thickness of the PVDF film 201 is 20 μm.

[0074] In this embodiment, the first mesh support layer 204 and the second mesh support layer 205 are both made of epoxy resin, and their thicknesses are both 200-500μm; for example, they can be 200μm, 250μm, 300μm, 350μm, etc.

[0075] The first grid support layer 204 and the second grid support layer 205 are provided with multiple hollow holes 2041 arranged in an array. The hollow holes 2041 are square in shape and the area of ​​a single hollow hole 2041 is 5mm².

[0076] Taking the first grid support layer 204 as an example, such as Figure 2 As shown, the square perforations 2041 in the first grid support layer 204 are arranged with one diagonal parallel to the length of the first grid support layer 204. This arrangement not only forms independent cavity structures through the perforations 2041, ensuring sufficient space on both sides of the PVDF film during use, allowing the gas inside the holes to vibrate with the PVDF film layer to avoid sound generation failure, but also optimizes structural stability, thus ensuring structural stability and ease of processing. The second grid support layer 205 can adopt the same structure as the first grid support layer 204.

[0077] The following is a specific example illustrating the fabrication method of the sound-emitting display screen based on PVDF thin film 201 in this embodiment. The specific fabrication method is as follows:

[0078] First, prepare the conductive layer: In a clean environment, lay the PVDF film 201 flat on the workbench, and use a spraying device to uniformly coat silver nanowires on both sides of the PVDF film 201 to form a first conductive layer 202 and a second conductive layer 203 with a thickness of about 0.8 μm; after coating, place the PVDF film 201 in a drying oven at 150℃ for drying treatment for 30 minutes, so that the silver nanowire layer is fully cured and firmly attached to both sides of the PVDF film 201.

[0079] A first grid support layer 204 is laid on the first polarizer 101 of the display panel 10, and then a PVDF film layer having a first conductive layer 202 and a second conductive layer 203 is stacked under the first grid support layer 204; finally, a second grid support layer 205 is aligned and covered under the second conductive layer 203.

[0080] Then, the first glass substrate 1021 is attached to the bottom of the second grid support layer 205, the liquid crystal layer 1022 is placed between the first glass substrate 1021 and the second glass substrate 1023, the second polarizer 1024 is placed on the side of the second glass substrate 1023 away from the liquid crystal layer 1022, and the second polarizer 1024 is placed between the second glass substrate 1023 and the backlight module 1025.

[0081] This embodiment integrates the PVDF thin-film sound-generating component inside the LCD panel, which not only enables the screen to emit sound but also effectively improves the integration of the device and the overall thinness of the structure, making it particularly suitable for ultra-thin LCD display and sound-generating integrated devices.

[0082] Example 3

[0083] See Figure 5 The main difference between this embodiment and Embodiment 1 is that the display panel 10 in this embodiment is an organic light-emitting panel (OLED), which includes a first glass substrate 1021 and an anode layer 1026, an organic light-emitting layer 1027 and a cathode layer 1028 arranged sequentially along a direction away from the first glass substrate 1021.

[0084] The thicknesses of the anode layer 1026 and the cathode layer 1028 are both less than the thickness of the organic light-emitting layer 1027.

[0085] When an electric current passes through, the "holes" injected into the anode layer and the "electrons" injected into the cathode combine in the organic light-emitting layer, thereby exciting the organic light-emitting layer to emit light.

[0086] The sound-generating component 20 is located between the first glass substrate 1021 and the first polarizer 101. The second grid support layer 205 is attached to the first glass substrate 1021, and the first grid support layer 204 is attached to the first polarizer 101.

[0087] The first polarizer 101 is mainly used to reduce reflection.

[0088] In some embodiments, the thickness of the PVDF film 201 is 95–115 μm. Preferably, the thickness of the PVDF film 201 is 100 μm.

[0089] In some embodiments, the first conductive layer 202 and the second conductive layer 203 may both be made of poly-3,4-ethylenedioxythiophene / polystyrene sulfonate (PEDOT:PS) with a thickness of 0.5 μm.

[0090] In some embodiments, both the first mesh support layer 204 and the second mesh support layer 205 are made of polylactic acid (PLA) and have a thickness of 100 μm.

[0091] The first grid support layer 204 and the second grid support layer 205 are provided with multiple hollow holes 2041 arranged in an array. The hollow holes 2041 are square in shape and the area of ​​a single hollow hole 2041 is 4 mm².

[0092] Taking the first grid support layer 204 as an example, such as Figure 3As shown, the square perforations 2041 in the first grid support layer 204 are arranged with one side of the square parallel to the length of the first grid support layer 204. This arrangement not only forms independent cavity structures through the perforations 2041, ensuring sufficient space on both sides of the PVDF film during use, allowing the gas inside the holes to vibrate with the PVDF film layer to avoid sound generation failure, but also optimizes structural stability; thus ensuring structural stability and ease of processing. The second grid support layer 205 can adopt the same structure as the first grid support layer 204.

[0093] The following is a specific example illustrating the fabrication method of the sound-emitting display screen based on PVDF thin film 201 in this embodiment. The specific fabrication method is as follows:

[0094] First, prepare the conductive layer: In a clean environment, lay the PVDF film 201 flat on the workbench, and use screen printing to uniformly print PEDOT:PS material on both sides of the PVDF film 201 to form a first conductive layer 202 and a second conductive layer 203 with a thickness of about 0.5μm; after coating, place the PVDF film 201 in a drying oven at 120℃ for drying treatment for 30 minutes, so that the conductive layer is fully cured and firmly attached to both sides of the PVDF film 201.

[0095] The first grid support layer 204 is laid on the first polarizer 101 of the display panel 10, and then a PVDF film 201 having a first conductive layer 202 and a second conductive layer 203 is stacked under the first grid support layer 204; finally, the second grid support layer 205 is aligned and covered under the second conductive layer 203.

[0096] Then, the first glass substrate 1021 is attached to the bottom of the second grid support layer 205, the anode layer 1026 is placed between the first glass substrate 1021 and the organic light-emitting layer 1027, and the cathode layer 1028 is placed below the organic light-emitting layer 1027.

[0097] This embodiment integrates the PVDF thin-film sound-generating component inside the organic light-emitting panel. While realizing screen sound generation, it also effectively improves the integration of the device and the overall thinness of the structure, making it particularly suitable for ultra-thin display and sound-generating integrated devices.

[0098] All of the above-mentioned optional technical solutions can be combined in any way to form optional embodiments of the invention. That is, any number of embodiments can be combined to meet the needs of different application scenarios. All of these are within the protection scope of this application and will not be described in detail here.

[0099] It should be noted that the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A sound-emitting display screen based on PVDF thin film, characterized in that: include, The display panel includes a panel body and a first polarizer stacked sequentially. A sound-generating component is located between the panel body and the first polarizer. The sound-generating component includes a PVDF film. A first conductive layer is disposed on the side of the PVDF film away from the panel body. A first mesh support layer is disposed between the first conductive layer and the first polarizer. A second conductive layer is disposed on the side of the PVDF film close to the panel body. A second mesh support layer is disposed between the second conductive layer and the panel body.

2. The sound-emitting display screen based on PVDF thin film according to claim 1, characterized in that: The panel body includes a first glass substrate, the sound-generating component is located between the first glass substrate and the first polarizer, the second mesh support layer is attached to the first glass substrate, and the first mesh support layer is attached to the first polarizer.

3. The sound-emitting display screen based on PVDF thin film according to claim 1, characterized in that: Both the first and second mesh support layers have multiple perforations, which are arranged in an array.

4. The sound-emitting display screen based on PVDF thin film according to claim 3, characterized in that: The area of ​​the perforated hole is 2 to 7 mm².

5. The sound-emitting display screen based on PVDF thin film according to claim 1, characterized in that: The thickness of the first grid support layer and / or the second grid support layer is 100–500 μm.

6. The sound-emitting display screen based on PVDF thin film according to claim 1, characterized in that: The thickness of the PVDF film is 20–200 μm.

7. The sound-emitting display screen based on PVDF thin film according to claim 1, characterized in that: The thickness of both the first conductive layer and the second conductive layer is 0.5 to 1 μm.

8. The sound-emitting display screen based on PVDF film according to claim 2, characterized in that: The display panel is a liquid crystal panel, and the panel body includes a first glass substrate, and a liquid crystal layer, a second glass substrate, a second polarizer and a backlight module arranged sequentially along a direction away from the first glass substrate.

9. The sound-emitting display screen based on PVDF thin film according to claim 8, characterized in that: Both the first conductive layer and the second conductive layer are made of silver nanowires, and the thickness of both the first conductive layer and the second conductive layer is 0.6 to 1 μm.

10. The sound-emitting display screen based on PVDF film according to claim 2, characterized in that: The display panel is an organic light-emitting panel, which includes a first glass substrate and an anode layer, an organic light-emitting layer and a cathode layer arranged sequentially in a direction away from the first glass substrate.

Images