Electronic device

Abstract

An electronic device, comprising a housing and a functional component, wherein the functional component is connected to the housing. The electronic device is provided with a channel, wherein one end of the channel penetrates one side of the electronic device; at least part of the housing constitutes at least part of inner walls of the channel; at least part of the functional component constitutes at least part of the inner walls of the channel; nano-hydrophobic films are provided on the inner walls of the channel; and the thickness of a nano-hydrophobic film on the functional component is less than the thickness of a nano-hydrophobic film on the housing. In the present application, by means of enabling the thickness of the nano-hydrophobic film on the functional component to be less than the thickness of the nano-hydrophobic film on the housing, the part on the functional component sensitive to external liquids can be isolated from liquids by means of the nano-hydrophobic film, and the nano-hydrophobic film can also be prevented from affecting the performance of the functional component.

Description

electronic devices

[0001] This invention claims priority to the Chinese patent application filed with the State Intellectual Property Office on January 26, 2024, with application number 202420207676.7 and application name “Electronic Device”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the technical field of electronic products, and in particular to an electronic device. Background Art

[0003] Electronic devices like mobile phones often have components sensitive to external liquids, such as microphones, speakers, and display modules. These components often have sound pickup holes and gaps. External liquids can enter through these holes and gaps, coming into contact with these components. These components can easily malfunction when exposed to liquids like water and household oils. Existing technologies typically add waterproof and breathable materials to these holes and gaps to achieve waterproofing. However, these materials are ineffective in effectively blocking moisture and impurities, resulting in poor results.

[0004] Summary of the Invention

[0005] In view of this, the present application provides an electronic device to solve the problem in the above-mentioned prior art that waterproof and breathable materials are difficult to effectively prevent moisture and impurities from entering the interior of the electronic device.

[0006] The present application provides an electronic device, comprising a shell and a functional component, wherein the functional component is connected to the shell, wherein the electronic device is provided with a channel, one end of the channel passes through one side of the electronic device, at least part of the shell constitutes at least part of the inner wall of the channel, at least part of the functional component constitutes at least part of the inner wall of the channel, a nano-hydrophobic film is provided on the inner wall of the channel, and the thickness of the nano-hydrophobic film on the functional component is less than the thickness of the nano-hydrophobic film on the shell.

[0007] In the present application, by making the thickness of the nano-hydrophobic film on the functional component smaller than the thickness of the nano-hydrophobic film on the shell, the parts of the functional component that are sensitive to external liquid can be isolated from the liquid by the nano-hydrophobic film, while at the same time avoiding the nano-hydrophobic film from affecting the performance of the functional component.

[0008] In one possible implementation, the channel includes an inner side surface and a bottom surface. The functional component is disposed on one side of the channel along the direction in which the channel extends through the electronic device. At least a portion of the functional component forms the bottom surface. A first hydrophobic film layer is disposed on the bottom surface, and a second hydrophobic film layer is disposed on the inner side surface. The second hydrophobic film layer is thicker than the first hydrophobic film layer. By reducing the thickness of the first hydrophobic film layer on the functional component, liquid isolation can be achieved while ensuring the functional component functions properly.

[0009] In one possible implementation, the thickness of the first hydrophobic film layer is greater than or equal to 10 nm, and the thickness of the second hydrophobic film layer is greater than or equal to 30 nm. That is, the thickness of the nano-hydrophobic film on the inner wall of the channel varies. The thickness of the nano-hydrophobic film on the functional components away from the channel opening is relatively thin, forming a film layer greater than 10 nm, thereby isolating the liquid while ensuring the normal function of the functional components. The nano-hydrophobic film outside the functional components has a relatively large thickness, for example, greater than 30 nm, which can provide better protection.

[0010] In one possible implementation, the sidewall of the housing is provided with the channel, and the second hydrophobic film layer within the channel continuously extends and covers at least a portion of the surface of the housing away from the functional component. The nano-hydrophobic film on the inner side and bottom surface of the channel can be continuously formed, and the nano-hydrophobic film on the inner side of the channel can continuously extend to the outer surface of the housing. An angle is also formed between the nano-hydrophobic film on the outer surface and the nano-hydrophobic film on the inner side of the channel, so that the nano-hydrophobic film continuously extending to the outer surface of the housing can block the edge of the channel, thereby preventing liquid from penetrating into the functional component from between the inner side of the channel and the nano-hydrophobic film on the inner side of the channel.

[0011] In one possible implementation, the functional component includes a main microphone assembly and a waterproof breathable membrane. One side of the waterproof breathable membrane abuts the main microphone assembly, while the side of the membrane facing away from the main microphone assembly abuts the housing and serves to seal the end of the channel facing the main microphone assembly. The nano-hydrophobic membrane is provided on the surface of the waterproof breathable membrane that seals the channel. This waterproof breathable membrane is both waterproof and breathable, preventing most liquids from penetrating one side of the functional component. The housing may be a middle frame, and the channel may be a sound pickup channel for the main microphone, disposed on a sidewall of the middle frame for transmitting sound. One end of the sound pickup channel has an opening, i.e., one end of the sound pickup channel extends through the middle frame, and the end of the sound pickup channel away from the opening is aligned with the main microphone. The shape of the sound pickup channel may be a regular straight channel, an irregular "Z"-shaped channel, or the like. A continuous nano-hydrophobic membrane may be provided on both the inner side of the sound pickup channel and the surface of the waterproof breathable membrane facing away from the main microphone. The nano-hydrophobic film on the inner side of the sound pickup channel can also extend continuously to the outer surface of the middle frame. The nano-hydrophobic film can effectively isolate liquids, preventing functional components from failing due to contact with liquids. The thickness of the nano-hydrophobic film on the middle frame surface and the inner side of the channel can both be greater than the thickness of the nano-hydrophobic film on the functional components. This ensures excellent protection from the nano-hydrophobic film while preventing the performance of the functional components from being affected by excessive nano-hydrophobic film thickness.

[0012] In one possible implementation, the nano-hydrophobic membrane is disposed on the surface of the waterproof breathable membrane facing the main microphone assembly. Alternatively, the nano-hydrophobic membrane may be disposed on the surface of the waterproof breathable membrane facing the main microphone assembly, thereby more reliably isolating liquids and preventing them from contacting functional components and causing them to malfunction.

[0013] In one possible implementation, the housing is provided with the channel, which extends through the housing along the thickness direction of the electronic device. The functional components include a first optical cover plate, a secondary microphone assembly, and a waterproof breathable membrane. The first optical cover plate is provided on one side of the housing along the thickness direction of the electronic device, and at least a portion of the projection of the first optical cover plate overlaps with at least a portion of the projection of the channel. A first gap is defined between the first optical cover plate and at least a portion of the edge of the channel. The nano-hydrophobic film in the channel extends continuously through the first gap and covers the surface of the housing near the first optical cover plate. The first optical cover plate has a first coating area provided on a side facing the channel, a second coating area provided on a side of the first optical cover plate, and a third coating area provided on a side facing away from the housing. The projections of the first, second, and third coating areas along the thickness direction of the electronic device each overlap or at least partially overlap with the projection of the channel. The nano-hydrophobic film is provided on each of the first, second, and third coating areas. The secondary microphone assembly and the waterproof breathable membrane are arranged on the side of the housing away from the first optical cover plate. One side of the waterproof breathable membrane abuts the secondary microphone assembly, and the side of the waterproof breathable membrane away from the secondary microphone assembly abuts the housing, which is used to close the end of the channel away from the first optical cover plate. The nano-hydrophobic membrane is provided on the surface of the waterproof breathable membrane used to close the channel. The nano-hydrophobic membrane on the first coating area, the second coating area, and the third coating area can cover the portion of the surface of the first optical cover plate close to the channel, which can prevent liquid from adhering to the position of the first optical cover plate close to the channel, which is conducive to preventing liquid from entering the channel. In addition, the first optical cover plate has a high-gloss appearance. By providing the nano-hydrophobic membrane on the first optical cover plate, liquid can be prevented from adhering to the optical glass, thereby improving the appearance of the first optical cover plate.

[0014] In one possible implementation, an anti-fingerprint layer is provided on the surface of the first optical cover plate facing away from the housing, with at least a portion of the anti-fingerprint layer forming the third coating area. The anti-fingerprint layer can cover the entire surface of the first optical cover plate and provide functions such as water repellency, oil repellency, anti-fouling, and anti-fingerprint adhesion. By providing a nano-hydrophobic film on the third coating area on the side of the anti-fingerprint layer facing away from the housing, the anti-fingerprint properties of the surface of the first optical cover plate can be improved without compromising the quality of the anti-fingerprint layer.

[0015] In one possible implementation, the thickness of the nano-hydrophobic film on the third coating area is less than the thickness of the nano-hydrophobic film within the channel. The third coating area may be part of the surface of the anti-fingerprint layer. If the thickness of the nano-hydrophobic film on the third coating area is too thick, it will affect the quality of functional layers such as the anti-fingerprint layer. Therefore, in this embodiment, the thickness of the nano-hydrophobic film on the third coating area is made smaller than the thickness of the nano-hydrophobic film within the channel. This can improve the anti-fingerprint and hydrophobic properties of the surface of the first optical cover plate while maintaining the quality of the anti-fingerprint layer.

[0016] In one possible implementation, the electronic device further includes a display module and a second optical cover plate, the housing is provided with a mounting groove, the display module and the second optical cover plate are both disposed in the mounting groove, the display module is connected to the bottom of the mounting groove, the second optical cover plate is connected to a side of the display module facing away from the bottom of the mounting groove, and a second gap is defined between the edges of the display module and the second optical cover plate and the sidewalls of the mounting groove; the sidewalls of the mounting groove, at least a portion of the bottom of the mounting groove, at least a portion of the side surfaces of the display module, and at least a portion of the side surfaces of the second optical cover plate serve as inner walls of the channel, the nano-hydrophobic film within the channel continuously extends and covers at least a portion of the surface of the housing away from the display module and the second optical cover plate, and the nano-hydrophobic film within the channel continuously extends and covers at least a portion of the surface of the second optical cover plate away from the display module. The nano-hydrophobic film layer is a continuous film layer capable of covering the sides of the display module, isolating liquid, and preventing liquid-sensitive portions of the display module from failing upon contact with liquid. The nano-hydrophobic layer can also cover part of the surface of the second optical cover plate, thereby improving the anti-fingerprint property of the surface of the second optical cover plate without damaging the quality of the anti-fingerprint layer.

[0017] In one possible implementation, the display module is connected to the bottom of the mounting groove via a layer of adhesive sealing material, with at least a portion of the side surface of the adhesive sealing material layer forming the inner wall of the channel. The adhesive sealing material may be an optical adhesive, such as OCA adhesive. A nano-hydrophobic film is provided on the surface of the OCA adhesive that serves as the inner wall of the channel to prevent liquid from coming into contact with the OCA adhesive, thereby ensuring its effectiveness.

[0018] In one possible implementation, the housing is provided with a first through-hole that extends through the housing along the thickness direction of the electronic device. The functional components include a third optical cover plate, a secondary microphone assembly, and a waterproof breathable membrane. The third optical cover plate is provided on one side of the housing along the thickness direction of the electronic device. The third optical cover plate is provided with a second through-hole that communicates with the first through-hole. The inner walls of the first through-hole and the inner walls of the second through-hole serve as the inner walls of the channel. The nano-hydrophobic membrane within the channel continuously extends and covers at least a portion of the surface of the third optical cover plate that is away from the housing. The secondary microphone assembly and the waterproof breathable membrane are provided on a side of the housing away from the third optical cover plate. One side of the waterproof breathable membrane abuts the secondary microphone assembly. The side of the waterproof breathable membrane that is away from the secondary microphone assembly abuts the housing and is used to close the end of the first through-hole away from the third optical cover plate. The nano-hydrophobic membrane is provided on the surface of the waterproof breathable membrane that is used to close the first through-hole. Among them, since the second through hole is opened on the third optical cover plate, the surface of the third optical cover plate around the second through hole can be provided with a nano-hydrophobic film, which can not only prevent liquid from adhering near the second through hole, but also improve the anti-fingerprint performance of the third optical cover plate.

[0019] In one possible implementation, the nano-hydrophobic membrane is an integrally formed continuous membrane layer. The continuous membrane layer can ensure that all locations in the channel can be isolated from the liquid, effectively preventing functional components from contacting the liquid and causing failure.

[0020] In one possible implementation, the channel includes an opening, and the channel extends through the electronic device through the opening. Along the direction in which the channel extends through the electronic device, the thickness of the nano-hydrophobic film gradually decreases from the end of the channel having the opening to the end of the channel away from the opening. This allows for a thicker nano-hydrophobic film to be positioned away from functional components, thereby achieving a superior protective effect. Furthermore, a relatively thinner nano-hydrophobic film can be positioned closer to the functional components to prevent an overly thick nano-hydrophobic film from affecting the performance of the functional components.

[0021] In a possible implementation, the thickness of the nano-hydrophobic film is between 5 nm and 150 nm.

[0022] It should be understood that the foregoing general description and the following detailed description are merely illustrative and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0024] FIG1 is a schematic structural diagram of an electronic device provided in an embodiment of the present application;

[0025] FIG2 is a partial cross-sectional view of an embodiment provided by the present application at AA in FIG1 (no nano-hydrophobic membrane is provided in the channel);

[0026] FIG3 is a partial cross-sectional view at AA in FIG1 in another embodiment provided by the present application (a nano-hydrophobic membrane is provided in the channel);

[0027] FIG4 is a partial cross-sectional view at AA in FIG1 in another embodiment provided by the present application;

[0028] FIG5 is a top view of an electronic device provided by an embodiment of the present application;

[0029] FIG6 is a cross-sectional view taken at BB in FIG5 ;

[0030] FIG7 is a cross-sectional view taken at CC in FIG1 ;

[0031] FIG8 is a top view of an electronic device provided by an embodiment of the present application;

[0032] FIG9 is a cross-sectional view taken at DD in FIG8 .

[0033] Reference numerals:

[0034] 1- shell;

[0035] 11-first through hole;

[0036] 2- Functional components;

[0037] 21- Main microphone assembly;

[0038] 22- Microphone assembly;

[0039] 3-channel;

[0040] 31-medial surface;

[0041] 32-Bottom;

[0042] 4-nanohydrophobic membrane;

[0043] 41-first hydrophobic film layer;

[0044] 42-second hydrophobic film layer;

[0045] 5-Waterproof and breathable membrane;

[0046] 6-Camera assembly;

[0047] 61-first optical cover;

[0048] 62-anti-fingerprint layer;

[0049] 63-third optical cover;

[0050] 631-second through hole;

[0051] 7-Display module;

[0052] 71-sealing material layer;

[0053] 72-mounting slot;

[0054] 8- second optical cover;

[0055] a-first gap;

[0056] X-length direction;

[0057] Y-width direction;

[0058] Z-thickness direction. DETAILED DESCRIPTION

[0059] In order to better understand the technical solution of the present application, the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0060] It should be clear that the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0061] The terms used in the embodiments of the present application are for the purpose of describing specific embodiments only and are not intended to limit the present application. The singular forms "a", "an", "the" and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise.

[0062] It should be understood that the term "and / or" as used herein simply describes a relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A alone, A and B together, or B alone. Furthermore, the character " / " in this document generally indicates an "or" relationship between the associated objects.

[0063] In the description of this application, unless otherwise specified or limited, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance; unless otherwise specified or explained, the term "plurality" refers to two or more; the terms "connected" and "fixed" should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, an integral connection, or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0064] For electronic devices such as mobile phones, there are many devices that can realize different functions, among which some devices are sensitive to external liquids. Such external liquids can be water, sweat, milk, beverages such as cola, laundry detergent, grease, etc. These liquid pollutants may be polar solutions, such as water, or non-polar solutions, such as grease. Devices that are sensitive to external liquids can be microphones, speakers, display modules, etc. These devices are very likely to fail to function when in contact with external liquids. Electronic devices such as mobile phones usually have sound pickup holes, fitting gaps, etc., and external liquids can enter the interior of the electronic device through these holes or gaps and come into contact with the above-mentioned devices. In order to prevent external liquids from entering the interior of the electronic device, the prior art generally adds waterproof and breathable materials to the sound pickup holes and gaps to achieve the waterproof function. However, such waterproof and breathable materials are difficult to effectively block moisture impurities and the effect is not good.

[0065] An embodiment of the present application provides an electronic device, which may be a device with waterproof requirements, such as a smart phone, a tablet computer, a laptop computer, a smart home, a smart bracelet, a smart watch, a smart helmet, smart glasses, etc. This application does not limit the specific type of electronic device. This embodiment is illustrated by taking the electronic device shown in Figure 1 as an example of a mobile phone. The electronic device may include a plurality of functional components, and these functional components may respectively realize different functions of the electronic device. For example, the functional components may be a microphone assembly, a camera assembly, a display module, a sensor, a charging module, etc. The electronic device also includes a housing, which may be a battery cover, an outer shell, a middle frame, or a combination of one or more of the internal structural ribs.

[0066] FIG2 is a partial cross-sectional view at AA in FIG1 in one embodiment (no nano-hydrophobic film is provided in the channel). Referring to FIG2 , the electronic device is provided with a channel 3, one end of which passes through one side of the electronic device, and the other end of the channel 3 does not pass through the electronic device. At least part of the housing 1 can constitute at least part of the inner wall of the channel 3, and at least part of the functional component 2 can constitute at least part of the inner wall of the channel 3. In other words, the channel 3 can be formed by the housing 1 of the electronic device and the functional component 2 that is sensitive to external liquid. In one embodiment, the above-mentioned channel 3 can be a hole structure with a preset function, such as a sound outlet of a speaker, a sound pickup hole of a microphone, a card tray, a charging port, an earphone jack, an optical sensor opening, a partial opening of the optical glass of a display screen, etc.; or the channel 3 can also be a fitting gap between the functional component 2 and a structural part, such as the gap between the display module 7 and the battery cover, the gap around the button, etc. The end of the channel 3 that passes through the electronic device may enter the external liquid, causing the functional component 2 to fail after contact with the outside.

[0067] FIG3 is a partial cross-sectional view at AA in FIG1 in another embodiment (a nano-hydrophobic membrane 4 is provided in the channel 3), with reference to FIG3. To this end, in this embodiment, a nano-hydrophobic membrane 4 is provided on the inner wall of the channel 3. The material of the nano-hydrophobic membrane 4 is generally a high-temperature resistant organic compound with hydrophobic properties. The molecular structure of the organic compound is non-polar or weakly polar, and the chemical bonds constituting the hydrophobic properties will not break due to high-temperature degradation when exposed to high-temperature plasma (such as plasma at a temperature of 120 to 200 degrees). The nano-hydrophobic membrane 4 is preferably an organic compound containing fluorine F or silicon Si. The chemical bond is a CF bond (carbon-fluorine bond) or a Si-O bond (silicon-oxygen bond) or a Si-CH3 bond (silicon-methyl bond), etc. The water drop angle of the nano-hydrophobic membrane 4 is greater than 90 degrees, preferably greater than 100 degrees, and good hydrophobic properties can be obtained. The nano-hydrophobic membrane 4 can also have oleophobic properties at the same time. Specifically, the contact angle can be tested using n-hexadecane, and the oil drop angle can be greater than 60 degrees.

[0068] The nano-hydrophobic membrane 4 can cover various positions on the inner wall of the channel 3, including the surface of the functional component 2 serving as the inner wall of the channel 3. Even if external liquid enters the channel 3, the nano-hydrophobic membrane 4 can effectively block moisture, thereby avoiding direct contact between the nano-hydrophobic membrane 4 and the functional component 2, which may cause the functional component 2 to fail.

[0069] Among them, the greater the thickness of the nano-hydrophobic film, the better the protective effect. However, if the thickness of the nano-hydrophobic film on the functional component 2 is too large, it will affect the normal function of the functional component 2. For example, the functional component 2 may include a microphone assembly, and the diaphragm in the microphone assembly is sensitive to external liquids. If the thickness of the nano-hydrophobic film deposited on the diaphragm is too large, it will affect the acoustic performance of the diaphragm, causing the microphone assembly to malfunction or fail. To this end, in this embodiment, the thickness of the nano-hydrophobic film on the functional component 2 can be less than the thickness of the nano-hydrophobic film on the housing 1, so that the parts of the functional component 2 that are sensitive to external liquids can be isolated from the liquid by the nano-hydrophobic film, and at the same time, the nano-hydrophobic film can be prevented from affecting the performance of the functional component 2.

[0070] In one embodiment, the nano-hydrophobic membranes at various positions in channel 3 are all made of the same material, and the same material refers to the same molecular chain structure of the hydrophobic organic compound. Infrared spectroscopy is usually used to test the infrared spectra of organic compounds. If the similarity is more than 90% and the characteristic peaks are consistent, they can be considered to belong to the same substance. Since the thickness of the nano-hydrophobic membrane is only nanometer-level, the signal tested by infrared spectroscopy is weak. For different positions of channel 3, when the substrate is the same substance, an energy spectrometer is used to test and analyze the elemental analysis of the components on the surface of the nano-hydrophobic membrane. When the element types are the same with an element content weight percentage of more than 0.5%, the nano-hydrophobic membranes at different positions in channel 3 can be considered to be of the same material. The elemental composition of the nano-hydrophobic membranes at different positions in channel 3 is tested using an energy spectrometer. The characteristic elements fluorine F or silicon Si are present on the surface of the nano-hydrophobic membrane, which can also be considered to be of the same material. In one embodiment, when the functional component 2 is arranged on one side of the channel 3 in the direction in which the channel 3 passes through the electronic device, that is, one end of the channel 3 has an opening and can pass through the electronic device, the other end of the channel 3 is closed by the functional component 2, so that part of the surface of the functional component 2 can serve as the inner wall surface of the channel 3, the functional component 2 is away from the opening, the thickness of the nano-hydrophobic film on the functional component 2 is smaller than the thickness of the nano-hydrophobic film at other positions in the channel 3, and the content of the above-mentioned characteristic elements of the nano-hydrophobic film outside the functional component 2 in the channel 3 is more than 1.5 of the content of the above-mentioned characteristic elements of the nano-hydrophobic film on the functional component 2, and preferably more than 2 times.

[0071] Typically, nano-hydrophobic films can be produced using a plasma-enhanced chemical vapor deposition (PECVD) process. However, in this coating method, plasma treatment can damage the anti-fingerprint coating on electronic devices, resulting in a decrease in the anti-fingerprint coating's water resistance, oil resistance, anti-fouling, and anti-fingerprint adhesion properties. Therefore, before forming the hydrophobic film, a temporary protective film is required to shield the anti-fingerprint layer on the cover surface of the screen / lens, etc. The entire electronic device, such as a mobile phone, is then placed in the PECVD chamber to produce a hydrophobic film with a uniform thickness in the unshielded area. However, the actual shielding area is often larger than the required shielding area of ​​the electronic device, resulting in redundant shielding material and increased material costs. Furthermore, this vacuum coating method requires vacuum operation, requires expensive equipment, and typically requires processing cycles of several hours or more, resulting in high manufacturing costs. Furthermore, the resulting film thickness is uniform, making it impossible to produce films of varying thicknesses according to the requirements of different coating locations.

[0072] In the present embodiment, a normal pressure plasma coating device can be used to prepare a nano-hydrophobic film on the inner wall of the channel 3. Specifically, a solution containing perfluorinated modified acrylate can be added to the normal pressure plasma coating device, and the nozzle of the normal pressure plasma coating device can output an airflow with a certain flow rate, which is mixed with plasma and hydrophobic molecules, and can be deposited on the substrate surface under atmospheric conditions to form a hydrophobic film of nanometer thickness. In other words, a normal pressure plasma coating device is used to prepare a nano-hydrophobic film, which can be plated under normal temperature and pressure, and the nano-hydrophobic film prepared is a continuous film layer of one-piece molding, which can achieve deposition of hydrophobic material only at a specified position. When spraying the nano-hydrophobic film, the nozzle of the device can be aligned to the position to be sprayed on the electronic device, and the area corresponding to the nozzle can be sprayed with the nano-hydrophobic film, and the position outside the nozzle spraying range will not be sprayed with the nano-hydrophobic film. In addition, by adjusting the process parameters of normal pressure plasma coating, such as plasma generation power, hydrophobic molecule spraying flow rate, or by regulating the spraying feeding stroke and wide range, the density of the hydrophobic material of spraying can be made different, and a nano hydrophobic layer with uneven thickness can be formed. Or the coating thickness can also be increased by increasing the number of coating times. By adjusting and optimizing deposition process, it is possible to achieve a nano hydrophobic layer with a regular shape channel 3 or an irregular shape channel 3 inner production of more than 10nm thickness. Exemplarily, near the position of spraying center point, nano hydrophobic layer thickness is larger, and away from the position of spraying center point, nano hydrophobic layer thickness can be less. Thus, it is possible to achieve a nano hydrophobic layer with a smaller deposition thickness on the functional component 2 away from the channel 3 openings, to prevent functional component 2 from contacting with liquid, while ensuring that the performance of functional component 2 is hardly affected by the nano hydrophobic layer.

[0073] In addition, nano-hydrophobic films are prepared using atmospheric pressure plasma coating equipment. With the help of plasma energy, nano-sized hydrophobic molecules can bond with each other on the substrate surface, depositing a dry film with nanometer-scale thickness. The deposited hydrophobic material is a silicone polymer, a fluorine-containing silicone polymer, or a fluorine-containing organic polymer, preferably a fluorine-containing organic polymer. For fluorine-containing organic polymer hydrophobic films, the final deposited film thickness is typically between 5nm and 150nm, with a water drop angle greater than 100 degrees and an oil drop angle greater than 60 degrees. After 1,000 friction tests, the water drop angle is still greater than 100 degrees.

[0074] Wherein, atmospheric pressure plasma coating equipment has a plasma shower head, and plasma can be sprayed from the plasma shower head to the surface of the substrate. The temperature of the plasma coming out of the plasma shower head is usually about 300 degrees. In combination with the structural design of the plasma shower head, the plasma temperature can be further reduced after the plasma passes through the pipe inside the plasma shower head. This plasma eventually needs to be in physical contact with the hydrophobic material. At this time, the temperature of the plasma is usually in the range of 120 degrees to 200 degrees. The temperature resistance of the hydrophobic material (hydrophobic molecules) needs to exceed the plasma flame temperature to avoid the hydrophobic material (hydrophobic molecules) from being subjected to molecular chain degradation only due to high temperature when exposed to the plasma. Therefore, the temperature resistance of the hydrophobic material (hydrophobic molecules) usually needs to be above 120 degrees, preferably above 150 degrees. In the present embodiment, the organosilicon molecules and fluorine-containing organic molecules used as hydrophobic materials usually have a temperature resistance of more than 150 degrees, or even more than 200 degrees, so that the hydrophobic material will not be subjected to molecular chain degradation when exposed to the plasma.

[0075] The hydrophobic molecules must contain active functional groups, such as vinyl and alkoxy groups. These active functional groups, under the influence of plasma energy, will be stimulated to produce reactive activities, such as becoming free radicals, and cross-linking reactions will occur between the hydrophobic molecules. After layer-by-layer deposition, the corresponding organic polymer nano-hydrophobic layer can be formed. Because the hydrophobic molecules themselves have a temperature resistance higher than 120 degrees Celsius, the temperature resistance of the nano-hydrophobic layer itself is not weaker than that of the hydrophobic molecules themselves, and is also above 120 degrees Celsius, showing good stability and preventing molecular chain degradation.

[0076] In this embodiment, a nano-hydrophobic film is formed using atmospheric pressure plasma coating equipment. The spray gas that contacts the substrate surface is plasmatized hydrophobic molecules, rather than high-energy plasma gas bombarding the substrate surface. By controlling the coating process, the coating process can be achieved without damaging optically thin layers such as the anti-fingerprint layer 62 on the surface of the electronic device.

[0077] In addition, organic polymers containing fluorine F (including organic polymers modified with fluorine F or organosilicon materials modified with fluorine F) are easy to achieve hydrophobicity and oleophobicity at the same time. However, fluorine-containing materials bring certain risks to environmental protection, so it can be considered that the nano hydrophobic layer does not use fluorine-containing materials or reduces the use of fluorine-containing materials. In one embodiment, the nano hydrophobic layer can be made of organosilicon material, so that there is no need to use fluorine-containing F materials. In one embodiment, a nano oleophobic layer can be added to the surface of the organosilicon nano hydrophobic layer to form a double-layer structure. In one embodiment, the oleophobic layer and the hydrophobic layer can be provided with multiple layers, for example, each side of the hydrophobic layer is provided with a layer of oleophobic layer to form a three-layer structure. Among them, only the oleophobic layer can be made of organosilicon material containing F, and the other layers can not contain fluorine F, so that the use of fluorine F can be reduced. In addition, the oleophobic layer can also be composed of organosilicon material or polyurethane or acrylic material modified by hydrophilic functional groups, wherein the hydrophilic functional group can be a polyol, and thus, the oleophobic layer can also not contain fluorine F. In addition, both the nano-hydrophobic layer and the nano-oleophobic layer can be produced using the above-mentioned atmospheric pressure plasma coating method, so the nano-hydrophobic layer or the nano-oleophobic layer has the above-mentioned structural morphological characteristics, for example, the coating thickness near the device nozzle is higher, and the coating thickness away from the device nozzle is thinner.

[0078] In one embodiment, referring to FIG2 , the channel 3 may include an inner side surface 31 and a bottom surface 32. Along the direction in which the channel 3 passes through the electronic device, the functional component 2 may be arranged on one side of the channel 3, and at least part of the functional component 2 is the bottom surface 32 of the channel 3. Referring to FIG3 , a first hydrophobic film layer 41 is provided on the bottom surface 32 of the channel 3, and a second hydrophobic film layer 42 is provided on the inner side surface 31 of the channel 3. The thickness of the second hydrophobic film layer 42 is greater than the thickness of the first hydrophobic film layer 41. Among them, when the thickness of the nano-hydrophobic layer is large, a better protective effect can be obtained, and the liquid can be effectively isolated. However, for the nano-hydrophobic layer on the functional component 2, as described above, if the thickness is too large, it will affect the performance of the functional component 2. Therefore, in this embodiment, by making the thickness of the first hydrophobic film layer 41 on the functional component 2 smaller, it is possible to isolate the liquid and ensure that the functional component 2 performs its normal function.

[0079] In one embodiment, the thickness of the nano-hydrophobic film can be between 5nm and 150nm. For example, the thickness of the first hydrophobic film layer 41 can be greater than or equal to 10nm, and the thickness of the second hydrophobic film layer 42 can be greater than or equal to 30nm. In other words, the thickness of the nano-hydrophobic film on the inner wall of the channel 3 is different. The thickness of the nano-hydrophobic film on the functional component 2 away from the opening of the channel 3 is relatively small, and a film layer of more than 10nm can be formed, thereby isolating the liquid and ensuring that the functional component 2 performs its normal function. The nano-hydrophobic film outside the functional component 2 has a relatively large thickness, for example, more than 30nm, which can have a better protective function.

[0080] In one embodiment, the channel 3 includes an opening that extends through the electronic device. Along the direction in which the channel 3 extends through the electronic device, the thickness of the nano-hydrophobic film gradually decreases from the end of the channel 3 with the opening toward the end away from the opening. This allows for a thicker nano-hydrophobic film to be positioned away from the functional component 2, providing excellent protection. Meanwhile, a relatively thinner nano-hydrophobic film can be positioned closer to the functional component 2 to prevent an excessively thick nano-hydrophobic film from affecting the performance of the functional component 2.

[0081] In one embodiment, referring to FIG3 , a channel 3 is provided on the side wall of the housing 1, and the second hydrophobic film layer 42 in the channel 3 continuously extends and covers at least a portion of the surface of the housing 1 away from the functional component 2. Referring to FIG1 , the electronic device includes a thickness direction Z, a width direction Y, and a length direction X, and the thickness direction Z, the width direction Y, and the length direction X are perpendicular to each other. In the width direction Y or the length direction X of the electronic device, the housing 1 includes a side wall, that is, in this embodiment, the channel 3 passes through the side wall of the housing 1 in the width direction Y or the length direction X of the housing 1, and the portion of the functional component 2 located inside the housing 1 can close the end of the channel 3 away from the opening, and a portion of the surface of the functional component 2 can serve as the aforementioned bottom surface 32 of the channel 3. The nano-hydrophobic film on the inner side surface 31 and the bottom surface 32 of the channel 3 can be continuously formed, and the nano-hydrophobic film on the inner side surface 31 of the channel 3 can be continuously extended to the outer surface of the shell 1. The outer surface is the surface on the side of the shell 1 away from the functional component 2. There is an angle between the outer surface and the direction in which the channel 3 passes through the electronic device, for example, 90°. Therefore, there is also an angle between the nano-hydrophobic film on the outer surface and the nano-hydrophobic film on the inner side surface 31 of the channel 3, so that the nano-hydrophobic film continuously extending to the outer surface of the shell 1 can block the edge of the channel 3, thereby preventing liquid from penetrating into the functional component 2 from between the inner side surface 31 of the channel 3 and the nano-hydrophobic film on the inner side surface 31 of the channel 3.

[0082] Figure 4 is a partial cross-sectional view taken at AA in Figure 1 of another embodiment provided herein. (See Figure 4 ). In one embodiment, the functional component 2 includes a main microphone assembly 21 and a waterproof breathable membrane 5. One side of the waterproof breathable membrane 5 abuts the main microphone assembly 21, while the side of the waterproof breathable membrane 5 facing away from the main microphone assembly 21 abuts the housing 1 and serves to seal the end of the channel 3 facing the main microphone assembly 21. A nano-hydrophobic membrane is provided on the surface of the waterproof breathable membrane 5 that seals the channel 3. This waterproof breathable membrane 5 is both waterproof and breathable, preventing most liquids from penetrating the side of the functional component 2. The housing 1 may be a middle frame, and the channel 3 may be the sound pickup channel 3 of the main microphone. The sound pickup channel 3 is located on the sidewall of the middle frame and is used to transmit sound. One end of the sound pickup channel 3 has an opening, that is, one end of the sound pickup channel 3 extends through the middle frame, and the end of the sound pickup channel 3 away from the opening is aligned with the position of the main microphone. The shape of the sound pickup channel 3 can be a regular straight channel 3, or an irregular "Z"-shaped channel 3, etc. A continuous nano-hydrophobic film can be provided on the inner side 31 of the sound pickup channel 3 and on the surface of the waterproof breathable membrane 5 facing away from the main microphone. The nano-hydrophobic film on the inner side 31 of the sound pickup channel 3 can also extend continuously to the outer surface of the middle frame. The nano-hydrophobic film can effectively isolate liquids, preventing the functional component 2 from failing due to contact with liquids. The thickness of the nano-hydrophobic film on the middle frame surface and the inner side 31 of the channel 3 can both be greater than that of the nano-hydrophobic film on the functional component 2. This ensures excellent protection through the nano-hydrophobic film while preventing the performance of the functional component 2 from being affected by excessive nano-hydrophobic film thickness.

[0083] In one embodiment, a nano-hydrophobic film can be provided on the surface of the waterproof breathable membrane 5 facing away from the main microphone, and a nano-hydrophobic film can also be provided on the surface of the waterproof breathable membrane 5 facing the main microphone assembly 21. This can more reliably isolate liquids and prevent liquids from contacting the functional component 2 and causing failure of the functional component 2. The thickness of the nano-hydrophobic film on the waterproof breathable membrane 5 can be greater than or equal to 10 nm, preferably greater than or equal to 20 nm.

[0084] Figure 5 is a top view of an electronic device provided by an embodiment of the present application, and Figure 6 is a cross-sectional view taken at point BB in Figure 5 . (See Figures 5 and 6 .) In one embodiment, the housing 1 may be a battery cover, which may be provided with a channel 3 extending through the electronic device in the thickness direction Z. The functional component 2 may include a first optical cover 61, a secondary microphone assembly 22, and a waterproof breathable membrane 5. The first optical cover 61 may be the optical glass of the camera assembly 6, located on the outside of the electronic device. Along the thickness direction Z of the electronic device, the first optical cover 61 is disposed on one side of the housing 1, with at least a portion of its projection coinciding with at least a portion of the projection of the channel 3. A first gap a is defined between the first optical cover 61 and at least a portion of the edge of the channel 3. The first optical cover 61 covers most of the opening of the channel 3, leaving only a small gap a. This ensures sound transmission while also concealing the channel 3 and enhancing the appearance of the electronic device.

[0085] The channel 3 on the battery cover serves as the sound pickup channel 3 for the secondary microphone assembly 22. Because a first gap a exists between the first optical cover plate 61 and at least a portion of the edge of the channel 3, this gap a allows the sound pickup channel 3 to communicate with the exterior of the electronic device, thereby enabling sound transmission. Furthermore, the nano-hydrophobic membrane within the channel 3 extends continuously through the first gap a and covers the surface of the housing 1 near the first optical cover plate 61. This prevents liquid from adhering to the area of ​​the housing 1 near the channel 3 and helps prevent liquid from entering the channel 3 through the first gap a. The secondary microphone assembly 22 and the waterproof breathable membrane 5 are disposed on the side of the housing 1 facing away from the first optical cover plate 61. One side of the waterproof breathable membrane 5 abuts the secondary microphone assembly 22, while the side of the waterproof breathable membrane 5 facing away from the secondary microphone assembly 22 abuts the housing 1, sealing the end of the channel 3 away from the first optical cover plate 61. The nano-hydrophobic membrane is disposed on the surface of the waterproof breathable membrane 5 that seals the channel 3.

[0086] The first optical cover plate 61 has a first coating area on the side facing the channel 3, a second coating area on the side of the first optical cover plate 61, and a third coating area on the side facing away from the housing 1. Along the thickness direction Z of the electronic device, the projections of the first, second, and third coating areas overlap, or at least partially overlap, with the projection of the channel 3. Each of the first, second, and third coating areas can be provided with a nano-hydrophobic film. The first, second, and third coating areas are all portions of the surface of the first optical cover plate 61. The nano-hydrophobic films on the first, second, and third coating areas can cover the portion of the surface of the first optical cover plate 61 near the channel 3, preventing liquid from adhering to the first optical cover plate 61 near the channel 3 and thus preventing liquid from entering the channel 3. Furthermore, the first optical cover plate 61 has a high-gloss appearance. The nano-hydrophobic films provided on the first optical cover plate 61 prevent liquid from adhering to the optical glass, thereby enhancing the appearance of the first optical cover plate 61. The waterproof and breathable membrane 5, the inner wall of the channel 3, the surface of the housing 1, and the nano-hydrophobic films on the first optical cover plate 61 are continuous film layers and made of the same material. As previously explained, the term "same material" refers to having the same molecular chain structure of the hydrophobic organic compound.

[0087] In one embodiment, referring to Figure 6 , an anti-fingerprint layer 62 is provided on the surface of the first optical cover plate 61 facing away from the housing 1 . At least a portion of the anti-fingerprint layer 62 constitutes a third coating area. This anti-fingerprint layer 62 can cover the entire surface of the first optical cover plate 61 and provide functions such as water repellency, oil repellency, anti-fouling, and anti-fingerprint adhesion. By providing a nano-hydrophobic film on the third coating area on the side of the anti-fingerprint layer 62 facing away from the housing 1 , the anti-fingerprint properties of the surface of the first optical cover plate 61 can be improved without compromising the quality of the anti-fingerprint layer 62.

[0088] In one embodiment, the thickness of the nano-hydrophobic film on the third coating area is less than the thickness of the nano-hydrophobic film within the channel 3. As previously described, the third coating area may be part of the surface of the anti-fingerprint layer 62. If the thickness of the nano-hydrophobic film on the third coating area is too thick, it will affect the quality of functional layers such as the anti-fingerprint layer 62. Therefore, in this embodiment, the thickness of the nano-hydrophobic film on the third coating area is made smaller than the thickness of the nano-hydrophobic film within the channel 3. This improves the anti-fingerprint and hydrophobic properties of the surface of the first optical cover plate 61 while maintaining the quality of the anti-fingerprint layer 62.

[0089] Figure 7 is a cross-sectional view at CC in Figure 1, refer to Figure 7. In one embodiment, the electronic device further includes a display module 7 and a second optical cover plate 8. The second optical cover plate 8 may be optical glass, which can cover the surface of the display module 7. The surface of the second optical cover plate 8 may be provided with an anti-fingerprint layer 62 for waterproofing, anti-fingerprinting, etc. The display module 7 may be a liquid crystal display (LCD), an organic light-emitting diode (OLED), etc. The display module 7 may contain an optical film that is sensitive to liquids, such as a polarizer. Different optical film layers can be bonded together by optically clear adhesive (OCA), but when the OCA adhesive comes into contact with liquids such as grease, the OCA adhesive may swell and deform, resulting in failure of the bonding interface, causing malfunction or failure of the display module 7. In actual products, there are usually exposed optical films, OCA glues, etc. on the side edges of the display area of ​​the display module 7, or the side edges of the optical films, OCA glues, etc. that are sensitive to liquids lack effective protective treatment measures. During use, external liquids may enter the gap between the display module 7 and the device housing 1, and penetrate and expand to the optical films, OCA glues, etc. that are sensitive to liquids, causing abnormal functions or failure of the display module 7.

[0090] To this end, in this embodiment, referring to FIG. 7 , the housing 1 is provided with a mounting groove 72. The display module 7 and the second optical cover plate 8 are both disposed within the mounting groove 72. The display module 7 is attached to the bottom of the mounting groove 72, and the second optical cover plate 8 is attached to the side of the display module 7 facing away from the bottom of the mounting groove 72. A second gap is defined between the edges of the display module 7 and the second optical cover plate 8 and the sidewalls of the mounting groove 72. This second gap can be an assembly gap, forming a channel 3. Specifically, the sidewalls of the mounting groove 72, at least a portion of the bottom of the mounting groove 72, at least a portion of the side surfaces of the display module 7, and at least a portion of the side surfaces of the second optical cover plate 8 serve as the inner walls of the channel 3. The nano-hydrophobic film within the channel 3 continuously extends and covers at least a portion of the surface of the housing 1 facing away from the display module 7 and the second optical cover plate 8. The nano-hydrophobic film within the channel 3 continuously extends and covers at least a portion of the surface of the second optical cover plate 8 facing away from the display module 7. The nano-hydrophobic film layer is a continuous layer that covers the sides of the display module 7, isolating it from liquids and preventing liquid-sensitive areas of the display module 7 from failing due to contact. The nano-hydrophobic layer can also cover a portion of the surface of the second optical cover plate 8, improving its anti-fingerprint properties without compromising the quality of the anti-fingerprint layer 62.

[0091] In one embodiment, referring to FIG7 , the display module 7 is connected to the bottom of the mounting groove 72 via a bonding sealing material layer 71. At least a portion of the side surface of the sealing material layer 71 serves as the inner wall of the channel 3. The sealing material layer 71 may be an optical adhesive, such as an OCA adhesive. A nano-hydrophobic film is provided on the surface of the OCA adhesive that serves as the inner wall of the channel 3 to prevent liquid from coming into contact with the OCA adhesive, thereby ensuring the effectiveness of the OCA adhesive.

[0092] Figure 8 is a top view of an electronic device provided by an embodiment of the present application, and Figure 9 is a cross-sectional view at DD in Figure 8, with reference to Figures 8 and 9. In one embodiment, a first through hole 11 is provided on the housing 1. For example, the housing 1 can be a battery cover, or the housing 1 can be a combination of a battery cover and a structural member. The structure can be a structure located within the housing 1 and can be used to support or install structural components, etc. Along the thickness direction Z of the electronic device, the first through hole 11 passes through the housing 1. The functional component 2 includes a third optical cover plate 63, a secondary microphone assembly 22, and a waterproof breathable membrane 5. The third optical cover plate 63 can be the optical glass of the camera assembly 6. Along the thickness direction Z of the electronic device, the third optical cover plate 63 is arranged on one side of the housing 1, and a second through hole 631 is provided on the third optical cover plate 63. The second through hole 631 is connected to the first through hole 11, that is, the first through hole 11 and the second through hole 631 together constitute the channel 3. The inner wall of the first through hole 11 and the inner wall of the second through hole 631 are the inner walls of the channel 3. The inner wall of the first through hole 11 and the inner wall of the second through hole 631 are both provided with a nano-hydrophobic film. The nano-hydrophobic film in the channel 3 can continuously extend and cover at least a portion of the surface of the third optical cover plate 63 away from the housing 1. The secondary microphone assembly 22 and the waterproof breathable membrane 5 are disposed on the side of the housing 1 away from the third optical cover plate 63. One side of the waterproof breathable membrane 5 abuts the secondary microphone assembly 22, while the side of the waterproof breathable membrane 5 away from the secondary microphone assembly 22 abuts the housing 1 and serves to seal the end of the first through-hole 11 away from the third optical cover plate 63. A nano-hydrophobic film is provided on the surface of the waterproof breathable membrane 5 that seals the first through-hole 11. Since the second through-hole 631 is provided on the third optical cover plate 63, the entire surface of the third optical cover plate 63 surrounding the second through-hole 631 can be provided with the nano-hydrophobic film. This prevents liquid from adhering to the vicinity of the second through-hole 631 and improves the anti-fingerprint performance of the third optical cover plate 63. The nano-hydrophobic film on the first through-hole 11, the second through-hole 631, the waterproof breathable membrane 5, and the surfaces of the third optical cover plate 63 are all continuous layers made of the same material.

[0093] The above are merely preferred embodiments of the present application and are not intended to limit the present application. Those skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. An electronic device, comprising a housing and functional components, the functional components being connected to the housing, characterized in that, The electronic device is provided with a channel, one end of the channel penetrates through one side of the electronic device, at least part of the housing constitutes at least part of the inner wall of the channel, at least part of the functional component constitutes at least part of the inner wall of the channel, a nano-hydrophobic film is provided on the inner wall of the channel, and the thickness of the nano-hydrophobic film on the functional component is less than the thickness of the nano-hydrophobic film on the housing.

2. The electronic device according to claim 1, wherein The channel includes an inner side surface and a bottom surface. Along the direction in which the channel penetrates the electronic device, the functional component is arranged on one side of the channel, at least part of the functional component is the bottom surface, a first hydrophobic film layer is provided on the bottom surface, a second hydrophobic film layer is provided on the inner side surface, and the thickness of the second hydrophobic film layer is greater than the thickness of the first hydrophobic film layer.

3. The electronic device according to claim 2, characterized in that, The thickness of the first hydrophobic film layer is greater than or equal to 10 nm, and the thickness of the second hydrophobic film layer is greater than or equal to 30 nm.

4. The electronic device according to claim 2, characterized in that, The side wall of the housing is provided with the channel, and the second hydrophobic film layer in the channel continuously extends and covers at least part of the surface of the housing away from the functional component.

5. The electronic device according to claim 4, wherein The functional component includes a main microphone assembly and a waterproof and breathable membrane. One side of the waterproof and breathable membrane abuts against the main microphone assembly, the side of the waterproof and breathable membrane away from the main microphone assembly abuts against the housing, and is used to close one end of the channel facing the main microphone assembly. The nano-hydrophobic film is provided on the surface of the waterproof and breathable membrane for closing the channel.

6. The electronic device according to claim 5, characterized in that, The nano-hydrophobic film is provided on the side of the waterproof and breathable membrane facing the main microphone assembly.

7. The electronic device according to claim 2, characterized in that The housing is provided with the channel, and along the thickness direction of the electronic device, the channel penetrates the housing; The functional component includes a first optical cover plate, a sub-microphone assembly and a waterproof and breathable membrane. Along the thickness direction of the electronic device, the first optical cover plate is arranged on one side of the housing, and at least part of the projection of the first optical cover plate coincides with at least part of the projection of the channel. There is a first gap between the first optical cover plate and at least part of the edge of the channel. The nano-hydrophobic film in the channel continuously extends through the first gap and covers the surface of the housing close to the first optical cover plate side. A first film-covered area is provided on the side of the first optical cover plate facing the channel, a second film-covered area is provided on the side surface of the first optical cover plate, and a third film-covered area is provided on the side of the first optical cover plate facing away from the housing; along the thickness direction of the electronic device, the projections of the first film-covered area, the second film-covered area and the third film-covered area respectively coincide with or at least partially coincide with the projection of the channel; the nano-hydrophobic film is provided on the first film-covered area, the second film-covered area and the third film-covered area. The secondary microphone assembly and the waterproof and breathable film are disposed on a side of the housing facing away from the first optical cover plate. One side of the waterproof and breathable film abuts against the secondary microphone assembly, and the side of the waterproof and breathable film away from the secondary microphone assembly abuts against the housing, for closing one end of the channel away from the first optical cover plate. The nano-hydrophobic film is disposed on the surface of the waterproof and breathable film for closing the channel.

8. The electronic device according to claim 7, wherein An anti-fingerprint layer is disposed on a side of the first optical cover plate away from the housing, and at least a partial area of the anti-fingerprint layer is the third film covering area.

9. The electronic device according to claim 7, wherein, The thickness of the nano-hydrophobic film on the third film covering area is less than the thickness of the nano-hydrophobic film in the channel.

10. The electronic device according to claim 1, wherein, The electronic device further includes a display module and a second optical cover plate. The housing is provided with a mounting groove. The display module and the second optical cover plate are both disposed in the mounting groove. The display module is connected to the bottom of the mounting groove, and the second optical cover plate is connected to a side of the display module away from the bottom of the mounting groove. There are second gaps between the edges of the display module and the second optical cover plate and the side walls of the mounting groove respectively; the side walls of the mounting groove, at least a partial bottom of the mounting groove, at least a partial side surface of the display module, and at least a partial side surface of the second optical cover plate are the inner walls of the channel. The nano-hydrophobic film in the channel continuously extends and covers at least a partial surface of the housing away from the display module and the second optical cover plate, and the nano-hydrophobic film in the channel continuously extends and covers at least a partial surface of the second optical cover plate away from the display module.

11. The electronic device according to claim 10, wherein The display module is connected to the bottom of the mounting groove through an adhesive sealing material layer, and at least a partial side surface of the adhesive sealing material layer is the inner wall of the channel.

12. The electronic device according to claim 1, characterized in that, The housing is provided with a first through hole, and the first through hole penetrates through the housing along the thickness direction of the electronic device; The functional components include a third optical cover plate, a secondary microphone assembly, and a waterproof and breathable film. Along the thickness direction of the electronic device, the third optical cover plate is disposed on one side of the housing. The third optical cover plate is provided with a second through hole, and the second through hole communicates with the first through hole. The inner walls of the first through hole and the second through hole are the inner walls of the channel. The nano-hydrophobic film in the channel continuously extends and covers at least a partial surface of the third optical cover plate away from the housing; The secondary microphone assembly and the waterproof and breathable film are disposed on a side of the housing away from the third optical cover plate. One side of the waterproof and breathable film abuts against the secondary microphone assembly, and the side of the waterproof and breathable film away from the secondary microphone assembly abuts against the housing, and is used for closing one end of the first through hole away from the third optical cover plate. The nano-hydrophobic film is disposed on the surface of the waterproof and breathable film for closing the first through hole.

13. The electronic device according to any one of claims 1-12, characterized in that, The nano-hydrophobic film is an integrally formed continuous film layer.

14. The electronic device according to any one of claims 1-13, characterized in that, The channel includes an opening, and the channel penetrates through the electronic device through the opening; Along the direction in which the channel penetrates the electronic device, the thickness of the nano-hydrophobic film gradually decreases from the end of the channel with the opening to the end of the channel away from the opening.

15. The electronic device according to any one of claims 1-14, characterized in that, The thickness of the nano-hydrophobic film ranges between 5 nm and 150 nm.

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