Waterproof film, microphone and electronic equipment

Abstract

The utility model discloses a waterproof film, a microphone and electronic equipment. The waterproof membrane comprises a waterproof base membrane and a polymer membrane, wherein the waterproof base membrane is provided with a first surface and a second surface which are arranged oppositely; at least one layer of polymer film is arranged, and the at least one layer of polymer film is laminated and connected to the first surface along the thickness direction; the polymer film is provided with a third surface far away from the waterproof base film; and the second surface or the third surface is configured to be connected with a body part of a microphone to which the waterproof film is applied. According to the waterproof membrane provided by the embodiment of the invention, the waterproof basement membrane and the at least one layer of polymer membrane are laminated, so that the use performance of the waterproof membrane can be improved, and the acoustic performance of a microphone using the waterproof membrane is further improved.

Description

Technical Field

[0001] This application relates to the technical field of electronic products, and more specifically, to a waterproof film, a microphone, and an electronic device. Background Art

[0002] With the development of science and technology and the improvement of living standards, various electronic products have gradually entered thousands of households and become necessities of people's lives; people's requirements for various performances of electronic products are also getting higher and higher.

[0003] In microphone devices, in order to prevent moisture in the external application environment from entering the microphone and damaging the components inside the microphone, it is necessary to cover a waterproof film at the sound hole of the microphone. In the prior art, the structure of the waterproof film is relatively simple, and there are problems such as easy adhesion to the microphone body and easy adhesion of foreign objects from the outside, which will have a negative impact on the performance of the microphone.

[0004] In view of this, a new technical solution needs to be proposed to solve the above technical problems. Summary of the Invention

[0005] An object of this application is to provide a new technical solution for a waterproof film, a microphone, and an electronic device.

[0006] According to the first aspect of this application, a microphone is provided, and the microphone includes:

[0007] A waterproof base film having a first surface and a second surface disposed opposite to each other;

[0008] A polymer film, with at least one layer of the polymer film laminated and connected to the first surface in the thickness direction; the polymer film has a third surface away from the waterproof base film;

[0009] The second surface or the third surface is configured to be connected to the body part of the microphone to which the waterproof film is applied.

[0010] Optionally, the second surface is provided with a surface coating.

[0011] Optionally, the material of the polymer film is one of polyimide, polyacrylonitrile, polyaryletherketone, polysulfone, or polyphenylene sulfide.

[0012] Optionally, the number of layers of the polymer film is two, one layer of the polymer film is laminated and connected to the first surface in the thickness direction, and the other layer of the polymer film is laminated and connected to the second surface in the thickness direction.

[0013] Optionally, the thickness of the waterproof base film is less than or equal to the thickness of the polymer film.

[0014] Optionally, the thickness of the waterproof base film is less than or equal to 10 micrometers.

[0015] Optionally, the thickness of the waterproof film is less than or equal to 10 micrometers.

[0016] Optionally, the material of the waterproof base film is silica gel.

[0017] According to a second aspect of the present application, there is provided a microphone, which includes the waterproof film as described in the first aspect.

[0018] According to a third aspect of the present application, there is provided an electronic device, which includes the microphone as described in the second aspect.

[0019] The waterproof film provided by the embodiments of the present application can improve the performance of the waterproof film by laminating a waterproof base film and at least one polymer film, and further improve the acoustic performance of the microphone to which the waterproof film is applied.

[0020] Other features and advantages of the present application will become clear through the following detailed description of the exemplary embodiments of the present application with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings incorporated in and constituting a part of this specification illustrate embodiments of the present application and, together with the description, serve to explain the principles of the present application.

[0022] Figure 1 is a schematic structural view of a waterproof film according to an embodiment of the present application Figure 1 ;

[0023] Figure 2 is a schematic structural view of a waterproof film according to an embodiment of the present application Figure 2 。

[0024] Description of the reference numerals:

[0025] 1. Waterproof film; 11. Waterproof base film; 111. First surface; 112. Second surface; 12. Polymer film; 121. Third surface. DETAILED DESCRIPTION

[0026] Now, various exemplary embodiments of the present application will be described in detail with reference to the accompanying drawings. It should be noted that: unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application.

[0027] The following description of at least one exemplary embodiment is merely illustrative in nature and in no way serves as a limitation to the present application or its application or use.

[0028] Technologies, methods, and devices that are known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such technologies, methods, and devices should be considered as part of the specification.

[0029] In all the examples shown and discussed herein, any specific values should be construed as merely exemplary and not as a limitation. Thus, other examples of the exemplary embodiments may have different values.

[0030] It should be noted that like reference numerals and letters denote like items in the following figures, and thus, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0031] Referring Figure 1 - Figure 2 As shown, according to an embodiment of the present application, a waterproof film 1 is provided. The waterproof film 1 includes a waterproof base film 11 and a polymer film 12. The waterproof base film 11 has a first surface 111 and a second surface 112 disposed opposite to each other;

[0032] At least one layer of the polymer film 12 is stacked and connected to the first surface 111 in the thickness direction; the polymer film 12 has a third surface 121 away from the waterproof base film 11;

[0033] The second surface 112 or the third surface 121 is configured to be connected to the body portion of the microphone to which the waterproof film is applied.

[0034] In the waterproof film 1 provided in the embodiment of the present application, the waterproof film 1 includes at least a double-layer structure, one layer being the waterproof base film 11 and the other being the polymer film 12, and the two are laminated and compounded to form the waterproof film 1. When the waterproof film 1 is connected to the body portion of the microphone through the second surface 112 of the waterproof base film 11, the third surface 121 of the polymer film 12 faces the external environment, so that at least the problem that the waterproof base film 11 is easily adhered to foreign matters in the external environment can be avoided; when the waterproof film 1 is connected to the body portion of the microphone through the third surface 121 of the polymer film 12, at least the problem that the waterproof base film 11 is directly in contact with the body portion of the microphone and adheres, thereby affecting the acoustic performance of the microphone, can be solved.

[0035] In summary, the waterproof film 1 provided in the embodiment of the present application can improve the use performance of the waterproof film 1 by laminating the waterproof base film 11 and at least one layer of the polymer film 12, and further improve the acoustic performance of the microphone to which the waterproof film 1 is applied.

[0036] In one embodiment, the second surface 112 is provided with a surface coating.

[0037] In this specific example, a surface coating is provided on the second surface 112 of the waterproof base film 11 that is not connected to the polymer film 12. Thus, whether the waterproof film 1 is connected to the main body of the microphone through the second surface 112 of the waterproof base film 11 or the waterproof film 1 is connected to the main body of the microphone through the third surface 121 of the polymer film 12, the performance of the microphone can be better improved.

[0038] Specifically, in the case where the waterproof film 1 is connected to the main body of the microphone through the second surface 112 of the waterproof base film 11, since the surface coating is provided on the second surface 112, the problem that the waterproof base film 11 is directly in contact with the main body of the microphone and adheres, thus affecting the acoustic performance of the microphone, can be avoided. And, since the third surface 121 of the polymer film 12 faces the external environment, the problem that the waterproof base film 11 is easily adhered to foreign substances in the external environment when exposed to the external environment can also be avoided.

[0039] In the case where the waterproof film 1 is connected to the main body of the microphone through the third surface 121 of the polymer film 12, not only can the problem that the waterproof base film 11 is directly in contact with the main body of the microphone and adheres, thus affecting the acoustic performance of the microphone, be solved. And, since the surface coating is provided on the second surface 112 of the waterproof base film 11 exposed to the external environment, the problem that the waterproof base film 11 is directly in contact with the external environment and foreign substances and adheres, thus affecting the acoustic performance of the microphone, can also be avoided.

[0040] In one embodiment, the material of the polymer film 12 is one of polyimide, polyacrylonitrile, polyaryletherketone, polysulfone or polyphenylene sulfide.

[0041] In this specific example, the polymer film 12 is made of one of polyimide, polyacrylonitrile, polyaryletherketone, polysulfone or polyphenylene sulfide. It has good mechanical strength, chemical stability and thermal stability, is suitable as a waterproof layer and does not affect the transmission of sound. The polymer film 12 has a stable surface tension, can effectively reduce the deformation problem caused by the inherent characteristics of the waterproof base film 11 over time and / or temperature and / or stress and other factors, and is beneficial to improving the reliability of the waterproof film 1 and the microphone product.

[0042] Furthermore, the polymer film 12 is compounded on the surface of the waterproof base film 11 by processes such as electrospinning and stretching; the polymer film 12 and the waterproof base film 11 can be better combined by combining gluing (such as thermosetting glue or photocuring glue) or hot pressing. In addition, the first surface 111 of the waterproof base film 11 can be modified to improve the bonding firmness between the polymer film 12 and the waterproof base film 11.

[0043] Further, the polymer film 12 made of the above material is a fluorine-free polymer spun film, which meets higher environmental protection requirements.

[0044] Referring to Figure 2 As shown, in one embodiment, the number of the polymer films 12 is two layers, and one of the polymer films 12 is stacked and connected to the first surface 111 in the thickness direction, and the other polymer film 12 is stacked and connected to the second surface 112 in the thickness direction.

[0045] In this specific example, two polymer films 12 are provided, and the two polymer films 12 sandwich the waterproof base film 11 in the middle. Thus, the third surface 121 of one of the polymer films 12 is connected to the main body part of the microphone, thereby avoiding the problem that the waterproof base film 11 is directly in contact with the main body part of the microphone and causing adhesion, which affects the acoustic performance of the microphone; the third surface 121 of the other polymer film 12 is exposed to the external environment, thereby avoiding the problem that the waterproof base film 11 is easily adhered to foreign matters in the external environment when exposed. Therefore, in this embodiment, the waterproof film 1 can obtain better performance without surface plating treatment on the waterproof base film 11.

[0046] Referring to Figure 1 、 Figure 2 As shown, in one embodiment, the thickness of the waterproof base film 11 is less than or equal to the thickness of the polymer film 12.

[0047] In this specific example, the thickness of the waterproof base film 11 is controlled to be less than or equal to the thickness of the polymer film 12, so as to reduce the sound loss caused by the waterproof film 1 in the application of the microphone product.

[0048] Referring to Figure 1 、 Figure 2 As shown, in one embodiment, the thickness of the waterproof base film 11 is less than or equal to 10 microns.

[0049] In this specific example, the thickness of the waterproof base film 11 is controlled to be below 10 microns. More reliably, the thickness of the waterproof base film 11 is less than or equal to 5 microns; thereby ensuring that the waterproof film 1 will not cause sound loss in the application of the microphone product.

[0050] Referring to Figure 1 、 Figure 2 As shown, in one embodiment, the thickness of the waterproof film 1 is less than or equal to 10 microns.

[0051] In this specific example, the total thickness of the waterproof film 1 is less than or equal to 10 microns, so as to ensure the thinness and flexibility of the waterproof film, and facilitate installation and integration into various microelectronic devices; at the same time, it can also ensure that the waterproof film 1 will not cause sound loss in the application of the microphone product.

[0052] In one embodiment, the waterproof base film 11 is made of silicone.

[0053] In this specific example, the waterproof base film 11 is made of silicone material, that is, the waterproof base film 11 is a silicone film, which not only has excellent flexibility and waterproof performance, but also has a low cost and is easy to form a firm, reliable and excellent bonding effect with the polymer film 12.

[0054] The waterproof film 1 provided by the embodiment of the present application combines the waterproof performance of the silicone film and the advantages of the spunbond film material, realizes the waterproof performance while avoiding problems such as adhesion between the waterproof film and the microphone and elastic deformation of the waterproof film, and achieves fluorine-free of the waterproof film.

[0055] According to another embodiment of the present application, a microphone is provided, and the microphone includes the waterproof film 1 as described above.

[0056] According to still another embodiment of the present application, an electronic device is provided, and the electronic device includes the microphone as described above.

[0057] The above embodiments mainly focus on the differences between the embodiments. As long as the different optimization features between the embodiments are not contradictory, they can be combined to form a better embodiment. Considering the simplicity of the text, it will not be elaborated here.

[0058] Although some specific embodiments of the present application have been described in detail by way of examples, those skilled in the art should understand that the above examples are only for illustration and not for limiting the scope of the present application. Those skilled in the art should understand that the above embodiments can be modified without departing from the scope and spirit of the present application. The scope of the present application is defined by the appended claims.

Claims

1. A waterproof membrane, characterized in that: The waterproof membrane comprises: A waterproof base membrane (11), the waterproof base membrane (11) having a first surface (111) and a second surface (112) disposed opposite to each other; A polymer film (12), wherein the polymer film (12) is provided with at least one layer, and the at least one layer of the polymer film (12) is laminated and connected to the first surface (111) along the thickness direction; the polymer film (12) has a third surface (121) away from the waterproof base film (11); The second surface (112) or the third surface (121) is configured to be connected to a main body of a microphone to which the waterproof membrane is applied.

2. The waterproof membrane according to claim 1, characterized in that: The second surface (112) is provided with a surface coating.

3. The waterproof membrane according to claim 1, characterized in that: The material of the polymer film (12) is one of polyimide, polyacrylonitrile, polyaryletherketone, polysulfone or polyphenylene sulfide.

4. The waterproof membrane according to claim 1, characterized in that: The polymer film (12) is provided in two layers, wherein one layer of the polymer film (12) is laminated and connected to the first surface (111) along the thickness direction, and the other layer of the polymer film (12) is laminated and connected to the second surface (112) along the thickness direction.

5. The waterproof membrane according to claim 1, characterized in that: The thickness of the waterproof base membrane (11) is less than or equal to the thickness of the polymer membrane (12).

6. The waterproof membrane according to claim 5, characterized in that: The thickness of the waterproof base membrane (11) is less than or equal to 10 micrometers.

7. The waterproof membrane according to claim 6, characterized in that: The thickness of the waterproof membrane is less than or equal to 10 microns.

8. The waterproof membrane according to any one of claims 1 to 7, characterized in that: The waterproof base membrane (11) is made of silica gel.

9. A microphone, characterized in that: The microphone comprises a waterproof membrane (1) as claimed in any one of claims 1 to 8.

10. An electronic device, characterized in that: The electronic device comprises the microphone as claimed in claim 9.

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