Electronic device

Abstract

Electronic equipment comprises a shell and a functional component, the functional component is connected to the shell, the electronic equipment is provided with a channel, one end of the channel penetrates through one side of the electronic equipment, at least part of the shell forms at least part of the inner wall of the channel, and at least part of the functional component forms at least part of the inner wall of the channel. A nano hydrophobic membrane is arranged on the inner wall of the channel, and the thickness of the nano hydrophobic membrane on the functional part is smaller than that of the nano hydrophobic membrane on the shell. In the application, the thickness of the nano hydrophobic membrane on the functional component can be smaller than that of the nano hydrophobic membrane on the shell, so that the part, sensitive to external liquid, on the functional component can isolate the liquid through the nano hydrophobic membrane, and meanwhile, the nano hydrophobic membrane can be prevented from influencing the performance of the functional component.

Description

Technical Field

[0001] The present application relates to the technical field of electronic products, and in particular to an electronic device. Background Art

[0002] For electronic devices such as mobile phones, there are devices such as microphones, speakers, display modules, etc. that are sensitive to external liquids. Electronic devices usually have sound pickup holes, matching gaps, etc. External liquids enter the electronic devices through the above sound pickup holes, matching gaps, etc. and come into contact with the above devices. When these devices encounter liquids such as water and daily grease, they are prone to malfunction. In the prior art, waterproof and breathable materials are generally added 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. Utility Model Content

[0003] In view of this, the present application provides an electronic device to solve the problem in the prior art that it is difficult to effectively prevent moisture and impurities from entering the interior of the electronic device using waterproof and breathable materials.

[0004] 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.

[0005] 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 preventing the nano-hydrophobic film from affecting the performance of the functional component.

[0006] In a possible implementation, the channel includes an inner side surface and a bottom surface, and along the direction in which the channel passes through the electronic device, the functional component is arranged on one side of the channel, and at least part of the functional component is the bottom surface, a first hydrophobic film layer is arranged on the bottom surface, and a second hydrophobic film layer is arranged on the inner side surface, and the thickness of the second hydrophobic film layer is greater than that of the first hydrophobic film layer. By making the thickness of the first hydrophobic film layer on the functional component smaller, it is possible to isolate the liquid and ensure that the functional component can function normally.

[0007] In a possible implementation, the thickness of the first hydrophobic film layer is greater than or equal to 10nm, and the thickness of the second hydrophobic film layer is greater than or equal to 30nm. In other words, the thickness of the nano-hydrophobic film on the inner wall of the channel is different. The thickness of the nano-hydrophobic film on the functional component far away from the channel opening is relatively small, and a film layer of more than 10nm can be formed, so as to isolate the liquid and ensure that the functional component can function normally. The nano-hydrophobic film outside the functional component has a relatively large thickness, for example, more than 30nm, which can have a better protective function.

[0008] In a possible implementation, the side wall of the shell is provided with the channel, and the second hydrophobic film layer in the channel continuously extends and covers at least a portion of the surface of the shell 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 be continuously extended to the outer surface of the shell, and there is also an angle 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 shell can block the edge of the channel, thereby preventing the liquid from penetrating from the inner side of the channel and the nano-hydrophobic film on the inner side of the channel to the functional component.

[0009] In a possible implementation, the functional component includes a main microphone assembly and a waterproof breathable membrane, one side of the waterproof breathable membrane abuts against the main microphone assembly, and the side of the waterproof 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, and the surface of the waterproof breathable membrane used to close the channel is provided with the nano-hydrophobic membrane. The waterproof breathable membrane has both waterproof and breathable functions, and can prevent most liquids from penetrating into one side of the functional component. Among them, the housing can be a middle frame, and the channel can be a sound pickup channel of the main microphone, and the sound pickup channel is provided on the side wall of the middle frame for transmitting sound. One end of the sound pickup channel has an opening, that is, one end of the sound pickup channel passes through the middle frame, and the end of the sound pickup channel away from the opening is aligned with the main microphone position. The shape of the sound pickup channel can be a regular straight-line channel, or an irregular "Z"-shaped channel, etc. A continuous nano-hydrophobic membrane can be provided on the inner side of the sound pickup channel and on the surface of the waterproof breathable membrane 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 the liquid and prevent the functional components from contacting the liquid and failing. The thickness of the nano-hydrophobic film on the surface of the middle frame and the nano-hydrophobic film on the inner side of the channel can be greater than the thickness of the nano-hydrophobic film on the functional component, so that a good protective function can be obtained through the nano-hydrophobic film, and the performance of the functional component can be prevented from being affected by the excessive thickness of the nano-hydrophobic film.

[0010] In a possible implementation, the nano-hydrophobic membrane is disposed on one side of the waterproof breathable membrane facing the main microphone assembly. A nano-hydrophobic membrane may also be disposed on one side of the waterproof breathable membrane facing the main microphone assembly, thereby more reliably isolating liquid and preventing liquid from contacting functional components and causing functional components to fail.

[0011] In a possible implementation, the housing is provided with the channel, and the channel passes through the housing along the thickness direction of the electronic device. The functional component includes a first optical cover plate, a secondary microphone assembly and a waterproof breathable membrane. Along the thickness direction of the electronic device, the first optical cover plate is provided on one side of the housing, and at least a portion of the projection of the first optical cover plate coincides with at least a portion of the projection of the channel. There is a first gap between the first optical cover plate and at least a portion of the edge of the channel, and the nano-hydrophobic film in the channel extends continuously through the first gap and covers the surface of the housing close to the first optical cover plate. A first coating area is provided on the side of the first optical cover plate facing the channel, a second coating area is provided on the side of the first optical cover plate, and a third coating area is provided on the side of the first optical cover plate away from the housing; along the thickness direction of the electronic device, the projections of the first coating area, the second coating area and the third coating area coincide with or at least partially overlap with the projection of the channel respectively; the first coating area, the second coating area and the third coating area are all provided with the nano-hydrophobic film. The secondary microphone assembly and the waterproof breathable membrane are arranged on the side of the shell away from the first optical cover plate, one side of the waterproof breathable membrane abuts against the secondary microphone assembly, and the side of the waterproof breathable membrane away from the secondary microphone assembly abuts against the shell, which is used to close the end of the channel away from the first optical cover plate, and the surface of the waterproof breathable membrane used to close the channel is provided with the nano-hydrophobic membrane. Among them, the nano-hydrophobic membrane on the first coating area, the second coating area and the third coating area can cover part 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.

[0012] In a possible implementation, an anti-fingerprint layer is provided on a surface of the first optical cover away from the housing, and at least a portion of the anti-fingerprint layer is the third coating area. The anti-fingerprint layer can cover the entire surface of the first optical cover, and has functions such as waterproof, oil-proof, 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 away from the housing, the anti-fingerprint property of the surface of the first optical cover can be improved without damaging the quality of the anti-fingerprint layer.

[0013] In a possible implementation, the thickness of the nano-hydrophobic film on the third coating area is less than the thickness of the nano-hydrophobic film in the channel. The third coating area may be a partial surface of the anti-fingerprint layer. If the thickness of the nano-hydrophobic film on the third coating area is too large, it will affect the quality of functional film 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 in the channel, which can improve the anti-fingerprint and hydrophobic properties of the surface of the first optical cover plate without damaging the quality of the anti-fingerprint layer.

[0014] In a 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 provided in the mounting groove, the display module is connected to the bottom of the mounting groove, the second optical cover plate is connected to the side of the display module away from the bottom of the mounting groove, and the edges of the display module and the second optical cover plate are respectively provided with a second gap with the side wall of the mounting groove; the side wall of the mounting groove, at least part of the bottom of the mounting groove, at least part of the side of the display module and at least part of the side of the second optical cover plate are the inner wall of the channel, the nano-hydrophobic film in the channel continuously extends and covers at least part of the 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 part of the surface of the second optical cover plate away from the display module. Wherein, the nano-hydrophobic film layer is a continuous film layer, which can cover the side of the display module, isolate the liquid, and prevent the liquid-sensitive part of the display module from failing after contacting the 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.

[0015] In a possible implementation, the display module is connected to the bottom of the mounting groove via an adhesive sealing material layer, and at least part of the side surface of the adhesive sealing material layer is the inner wall of the channel. The adhesive sealing material may be an optical adhesive, such as OCA adhesive, and a nano-hydrophobic film is provided on the surface of the OCA adhesive that is used as the inner wall of the channel to prevent liquid from contacting the OCA adhesive, thereby ensuring the effectiveness of the OCA adhesive.

[0016] In a possible implementation, a first through hole is provided on the housing, and the first through hole passes through the housing along the thickness direction of the electronic device. The functional component includes a third optical cover plate, a secondary microphone assembly and a waterproof breathable membrane. Along the thickness direction of the electronic device, the third optical cover plate is provided on one side of the housing, a second through hole is provided on the third optical cover plate, the second through hole is communicated with the first through hole, the inner wall of the first through hole and the inner wall of the second through hole are the inner walls of the channel, and the nano-hydrophobic membrane in the channel extends continuously and covers at least part of the surface of the third optical cover plate away from the housing. The secondary microphone assembly and the waterproof breathable membrane are provided on the side of the housing away from the third optical cover plate, one side of the waterproof breathable membrane abuts the secondary microphone assembly, and one side of the waterproof breathable membrane away from the secondary microphone assembly abuts the housing and is used to close one end of the first through hole away from the third optical cover plate, and the surface of the waterproof breathable membrane used to close the first through hole is provided with the nano-hydrophobic membrane. 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.

[0017] In a possible implementation, the nano-hydrophobic membrane is an integrally formed continuous membrane layer. The continuous membrane layer can ensure that all positions in the channel can be isolated from the liquid, effectively preventing the functional components from contacting with the liquid and causing failure.

[0018] In a possible implementation, the channel includes an opening, and the channel passes through the electronic device through the opening. Along the direction in which the channel passes 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. Thus, a nano-hydrophobic film with a larger thickness can be provided at a position away from the functional component to obtain a good protective effect. A nano-hydrophobic film with a relatively smaller thickness can be provided at a position close to the functional component to avoid an overly thick nano-hydrophobic film affecting the performance of the functional component.

[0019] In a possible implementation, the thickness of the nano-hydrophobic film is between 5 nm and 150 nm.

[0020] It should be understood that the foregoing general description and the following detailed description are exemplary only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. 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 paying creative labor.

[0022] Figure 1 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application;

[0023] Figure 2 In one embodiment provided in this application, Figure 1 Partial cross-sectional view at AA in the middle (no nano-hydrophobic membrane is set in the channel);

[0024] Figure 3 In another embodiment provided in this application, Figure 1 Partial cross-sectional view at AA in the middle (a nano-hydrophobic membrane is provided in the channel);

[0025] Figure 4 In another embodiment provided in this application, Figure 1 Partial cross-sectional view at AA in the middle;

[0026] Figure 5 A top view of an electronic device provided by an embodiment of the present application;

[0027] Figure 6 for Figure 5 The cross-sectional view at BB;

[0028] Figure 7 for Figure 1 The cross-sectional view at CC in the figure;

[0029] Figure 8 A top view of an electronic device provided by an embodiment of the present application;

[0030] Fig. 9 for Figure 8 Cross-sectional view at DD.

[0031] Reference numerals:

[0032] 1- housing;

[0033] 11- a first through hole;

[0034] 2- Functional components;

[0035] 21- Main microphone assembly;

[0036] 22-Secondary microphone assembly;

[0037] 3-channel;

[0038] 31 - medial side;

[0039] 32-Bottom;

[0040] 4-Nano hydrophobic membrane;

[0041] 41-a first hydrophobic film layer;

[0042] 42- a second hydrophobic film layer;

[0043] 5-Waterproof breathable membrane;

[0044] 6- Camera assembly;

[0045] 61-first optical cover plate;

[0046] 62-anti-fingerprint layer;

[0047] 63-third optical cover plate;

[0048] 631-second through hole;

[0049] 7-Display module;

[0050] 71- sealing material layer;

[0051] 72-mounting slot;

[0052] 8- second optical cover plate;

[0053] a-first gap;

[0054] X-length direction;

[0055] Y-width direction;

[0056] Z-thickness direction. DETAILED DESCRIPTION

[0057] 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.

[0058] It should be clear that the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0059] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms "a", "said" 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 other meanings.

[0060] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0061] In the description of this application, unless otherwise clearly specified and limited, the terms "first" and "second" are used for descriptive purposes only and cannot 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 be a fixed connection, a detachable connection, an integral connection, or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0062] 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 sensitive to external liquids can be microphones, speakers, display modules, etc. These devices are prone to functional failure when in contact with external liquids. Electronic devices such as mobile phones usually have sound pickup holes, matching gaps, etc., and external liquids can enter the interior of the electronic device through these holes or gaps and contact 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.

[0063] The present application provides an electronic device, which may be a mobile phone, tablet computer, laptop computer, smart home, smart bracelet, smart watch, smart helmet, smart glasses, etc., which has waterproof requirements. The present application does not limit the specific type of electronic device. Figure 1The electronic device shown is illustrated by taking a mobile phone as an example. The electronic device may include numerous functional components, which may respectively implement different functions of the electronic device. Exemplarily, 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, a housing, a middle frame, or one or more combinations of internal structural ribs.

[0064] Figure 2 In one embodiment, Figure 1 Partial cross-sectional view at AA (no nano-hydrophobic membrane is set in the channel), refer to Figure 2 , the electronic device is provided with a channel 3, one end of the channel 3 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 be formed as at least part of the inner wall of the channel 3, and at least part of the functional component 2 can be formed as at least part of the inner wall of the channel 3, that is, such a 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 matching gap between the functional component 2 and a structural part, such as a gap between the display module 7 and the battery cover, a gap around a button, etc. The end of the channel 3 that passes through the electronic device may enter the external liquid, resulting in the problem of functional failure of the functional component 2 after contacting the outside.

[0065] Figure 3 In another embodiment, Figure 1 Partial cross-sectional view at AA (a nano-hydrophobic membrane 4 is provided in the channel 3), refer to Figure 3 . To this end, in the present 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 usually 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.

[0066] 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 that serves 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 preventing the nano-hydrophobic membrane 4 from directly contacting the functional component 2 and causing the functional component 2 to fail.

[0067] 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 liquid. 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 liquid 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.

[0068] In one embodiment, the nano-hydrophobic membranes at various positions in the 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, it 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 the channel 3, when the substrate is the same substance, the element analysis of the composition of the surface of the nano-hydrophobic membrane is analyzed by an energy spectrometer. When the element type of the element content weight percentage is more than 0.5%, the nano-hydrophobic membranes at different positions in the channel 3 can be considered to be the same material. The element composition of the nano-hydrophobic membrane at different positions of the channel 3 is tested by an energy spectrometer. The characteristic elements fluorine F or silicon Si exist on the surface of the nano-hydrophobic membrane, which can also be considered to be 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 penetrates the electronic device, that is, one end of the channel 3 has an opening and can penetrate 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.

[0069] Generally speaking, nano-hydrophobic films can be prepared by plasma-enhanced chemical vapor deposition (PECVD) process. However, in this coating method, plasma treatment may damage the anti-fingerprint coating on the electronic device, resulting in deterioration of the anti-fingerprint coating's waterproof, oil-proof, anti-fouling, anti-fingerprint adhesion and other functions. Therefore, before preparing the hydrophobic film, it is necessary to use a temporary protective film to shield the anti-fingerprint layer on the cover surface of the screen / lens, etc., and then place the mobile phone and other electronic devices as a whole in the PECVD chamber to prepare a hydrophobic film with uniform thickness in the non-shielded area. However, the area of ​​the actual shielding area is usually larger than the area of ​​the necessary shielding area on the electronic device, which will cause the area of ​​the material with shielding function actually used to be redundant, resulting in increased material costs. In addition, this vacuum coating method needs to be carried out in a vacuum environment. The equipment used in this process is expensive, the processing cycle is usually more than several hours, and the manufacturing and processing cost is too high. And the thickness of the prepared film layer is uniform, and it is not possible to prepare film layers of different thicknesses according to the requirements of different coating positions.

[0070] 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 a gas flow with a certain flow rate, which is mixed with plasma and hydrophobic molecules, and can be deposited on the surface of the substrate under an atmospheric environment to form a hydrophobic film of nanometer thickness. In other words, the nano hydrophobic film is prepared by using a normal pressure plasma coating device, and a film can be plated under a normal temperature and pressure environment, and the prepared nano hydrophobic film is an integrated continuous film layer, which can achieve deposition of hydrophobic materials 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, while the part 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, etc., or by adjusting the spraying feeding stroke and wide range, the density of the hydrophobic material sprayed 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 the deposition process, it is possible to achieve a nano hydrophobic layer with a thickness of more than 10nm in a channel 3 with a regular shape or an irregular shape. Exemplarily, near the position of the spraying center point, the nano hydrophobic layer thickness is larger, and away from the position of the spraying center point, the nano hydrophobic layer thickness will be smaller. Thus, it is possible to achieve a nano hydrophobic layer with a smaller deposition thickness on the functional component 2 away from the opening of the channel 3, to prevent the functional component 2 from contacting with the liquid, while being able to ensure that the performance of the functional component 2 is hardly affected by the nano hydrophobic layer.

[0071] In addition, the nano hydrophobic film is prepared by using atmospheric pressure plasma coating equipment. With the help of plasma energy, the nano hydrophobic molecules can be combined with each other on the surface of the substrate and deposited as a dry film with a nanometer thickness. The deposited hydrophobic material is an organosilicon polymer, a fluorine-containing organosilicon polymer or a fluorine-containing organic polymer, preferably a fluorine-containing organic polymer. For the fluorine-containing organic polymer hydrophobic film, the thickness of the final deposited film is usually between 5nm and 150nm, the water drop angle is greater than 100 degrees, the oil drop angle is greater than 60 degrees, and the water drop angle is still greater than 100 degrees after 1000 friction tests.

[0072] Among them, the atmospheric pressure plasma coating equipment has a plasma nozzle, and plasma can be sprayed from the plasma nozzle to the surface of the substrate. The temperature of the plasma coming out of the plasma nozzle is usually about 300 degrees. Combined with the structural design of the plasma nozzle, the plasma temperature can be further reduced after the plasma passes through the pipeline inside the plasma nozzle. This plasma finally 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, and the temperature resistance of the hydrophobic material (hydrophobic molecule) needs to exceed the plasma flame temperature to avoid the hydrophobic material (hydrophobic molecule) from being only due to the high temperature when it is exposed to the plasma. Molecular chain degradation. Therefore, the temperature resistance of the hydrophobic material (hydrophobic molecule) is usually required 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, even more than 200 degrees, so that the hydrophobic material will not be degraded by molecular chain when it is exposed to plasma.

[0073] The above hydrophobic molecules must contain active functional groups, such as vinyl, alkoxy and other functional groups. These active functional groups will be stimulated to produce reactive activities under the energy of plasma, such as becoming free radicals, etc., and cross-linking reactions will occur between the hydrophobic molecules. After the molecules are deposited layer by layer, a corresponding organic polymer nano-hydrophobic layer can be formed. Since the temperature resistance of the hydrophobic molecules themselves is higher than 120 degrees, 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, with good stability and no molecular chain degradation.

[0074] In this embodiment, a normal pressure plasma coating device is used to prepare the nano hydrophobic film, and the spray gas in contact with the substrate surface is plasmatized hydrophobic molecules, not high energy plasma gas bombarding the substrate surface. By regulating the coating process, the coating process can be achieved without damaging the optical thin layer such as the anti-fingerprint layer 62 on the surface of the electronic device.

[0075] 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 by 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.

[0076] In one embodiment, referring to Figure 2 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. Figure 3 , 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, and 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 protection effect can be obtained, and the liquid can be effectively isolated. However, as described above, for the nano hydrophobic layer on the functional component 2, 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 can isolate the liquid and ensure that the functional component 2 performs its normal function.

[0077] In one embodiment, the thickness of the nano-hydrophobic film may be between 5nm and 150nm. Exemplarily, the thickness of the first hydrophobic film layer 41 may be greater than or equal to 10nm, and the thickness of the second hydrophobic film layer 42 may 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, and 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 normal functions. The nano-hydrophobic film outside the functional component 2 has a relatively large thickness, for example, more than 30nm, and can have a better protective function.

[0078] In one embodiment, the channel 3 includes an opening, and the channel 3 passes through the electronic device through the opening. Along the direction in which the channel 3 passes through the electronic device, the thickness of the nano-hydrophobic film gradually decreases from the end of the channel 3 having the opening to the end of the channel 3 away from the opening. Thus, a nano-hydrophobic film with a larger thickness can be provided at a position away from the functional component 2 to obtain a good protective effect. A nano-hydrophobic film with a relatively smaller thickness can be provided at a position close to the functional component 2 to prevent an overly thick nano-hydrophobic film from affecting the performance of the functional component 2.

[0079] In one embodiment, referring to Figure 3 The side wall of the housing 1 is provided with a channel 3, 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. Figure 1 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 part of the functional component 2 located inside the housing 1 can close the end of the channel 3 away from the opening, and part 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, which is the surface on 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.

[0080] Figure 4 In another embodiment provided in this application, Figure 1 Partial cross-section at AA, 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 against the main microphone assembly 21, and the side of the waterproof breathable membrane 5 away from the main microphone assembly 21 abuts against the housing 1, and is used to close the end of the channel 3 facing the main microphone assembly 21, and a nano-hydrophobic membrane is provided on the surface of the waterproof breathable membrane 5 for closing the channel 3. The waterproof breathable membrane 5 has both waterproof and breathable functions, and can prevent most liquids from penetrating into one side of the functional component 2. Among them, the housing 1 can be a middle frame, and the channel 3 can be a sound pickup channel 3 of the main microphone, and the sound pickup channel 3 is arranged on the side wall of the middle frame for propagating sound. One end of the sound pickup channel 3 has an opening, that is, one end of the sound pickup channel 3 passes through the middle frame, and the end of the sound pickup channel 3 away from the opening is aligned with the main microphone position. The shape of the sound pickup channel 3 can be a regular straight-line channel 3, or an irregular "Z"-shaped channel 3, etc. A continuous nano-hydrophobic film can be provided on the inner side surface 31 of the sound pickup channel 3 and on the surface of the waterproof breathable membrane 5 away from the main microphone. The nano-hydrophobic film on the inner side surface 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 the liquid and prevent the functional component 2 from failing due to contact with the liquid. Among them, the thickness of the nano-hydrophobic film on the surface of the middle frame and the nano-hydrophobic film on the inner side surface 31 of the channel 3 can be greater than the thickness of the nano-hydrophobic film on the functional component 2, so that a good protective function can be obtained through the nano-hydrophobic film, and the performance of the functional component 2 can be avoided to be affected by the excessive thickness of the nano-hydrophobic film.

[0081] In one embodiment, a nano-hydrophobic film may be provided on the side of the waterproof breathable membrane 5 away from the main microphone, and a nano-hydrophobic film may also be provided on the side of the waterproof breathable membrane 5 facing the main microphone assembly 21, so as to more reliably isolate the liquid and prevent the liquid from contacting the functional component 2 and causing the functional component 2 to fail. The thickness of the nano-hydrophobic film on the waterproof breathable membrane 5 may be greater than or equal to 10 nm, preferably greater than or equal to 20 nm.

[0082] Figure 5 A top view of an electronic device provided by an embodiment of the present application, Figure 6 for Figure 5 The cross-sectional view at BB in Fig. Figure 5 and Figure 6. In one embodiment, the housing 1 may be a battery cover, and the battery cover may be provided with a channel 3 that runs through in the thickness direction Z of the electronic device. The functional component 2 may include a first optical cover plate 61, a secondary microphone assembly 22, and a waterproof breathable membrane 5. The first optical cover plate 61 may be an optical glass on the camera assembly 6, and the optical glass is located on the outside of the electronic device. Along the thickness direction Z of the electronic device, the first optical cover plate 61 is arranged on one side of the housing 1, and at least a portion of the projection of the first optical cover plate 61 coincides with at least a portion of the projection of the channel 3, and a first gap a is provided between the first optical cover plate 61 and at least a portion of the edge of the channel 3. The first optical cover plate 61 can cover most of the area at the opening of the channel 3, leaving only the first gap a with a smaller width, which is beneficial to hiding the channel 3 while ensuring sound propagation, thereby improving the appearance of the electronic device.

[0083] Among them, the channel 3 on the battery cover is the sound pickup channel 3 of the secondary microphone assembly 22, and because there is a first gap a between the first optical cover plate 61 and at least part of the edge of the channel 3, the sound pickup channel 3 can be connected to the external space of the electronic device through the first gap a, thereby realizing the propagation of sound. In addition, the nano-hydrophobic membrane in the channel 3 continuously extends through the first gap a and covers the surface of the housing 1 close to the first optical cover plate 61, so that liquid can be prevented from adhering to the position of the housing 1 near the channel 3, which is conducive to preventing liquid from entering the channel 3 through the first gap a. The secondary microphone assembly 22 and the waterproof breathable membrane 5 are arranged on the side of the housing 1 away from the first optical cover plate 61, one side of the waterproof breathable membrane 5 abuts against the secondary microphone assembly 22, and the side of the waterproof breathable membrane 5 away from the secondary microphone assembly 22 abuts against the housing 1, which is used to close the end of the channel 3 away from the first optical cover plate 61, and the surface of the waterproof breathable membrane 5 for closing the channel 3 is provided with a nano-hydrophobic membrane.

[0084] A first coating area is provided on the side of the first optical cover plate 61 facing the channel 3, a second coating area is provided on the side of the first optical cover plate 61, and a third coating area is provided on the side of the first optical cover plate 61 facing away from the housing 1. Along the thickness direction Z of the electronic device, the projections of the first coating area, the second coating area, and the third coating area respectively overlap or at least partially overlap with the projection of the channel 3, and the first coating area, the second coating area, and the third coating area can all be provided with a nano-hydrophobic film. Among them, the first coating area, the second coating area and the third coating area are all partial surfaces on the first optical cover plate 61, and the nano-hydrophobic film on the first coating area, the second coating area and the third coating area can cover the partial surface of the first optical cover plate 61 close to the channel 3, which can prevent liquid from adhering to the position close to the channel 3 on the first optical cover plate 61, which is conducive to preventing liquid from entering the channel 3. In addition, the first optical cover plate 61 has a high-gloss appearance. By arranging the nano-hydrophobic film on the first optical cover plate 61, it is possible to prevent liquid from adhering to the optical glass, thereby improving the appearance of the first optical cover plate 61. Among them, the waterproof breathable film 5, the inner wall surface of the channel 3, the surface of the housing 1 and the nano-hydrophobic film on the first optical cover plate 61 are continuous film layers and are made of the same material. As described above, the same material means that the molecular chain structure of the hydrophobic organic compound is the same.

[0085] In one embodiment, referring to Figure 6 , an anti-fingerprint layer 62 is provided on the side of the first optical cover plate 61 away from the housing 1, and at least part of the anti-fingerprint layer 62 is a third coating area. The anti-fingerprint layer 62 can cover the entire surface of the first optical cover plate 61, and has functions such as waterproof, oil-proof, 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 away from the housing 1, the anti-fingerprint property of the surface of the first optical cover plate 61 can be improved without damaging the quality of the anti-fingerprint layer 62.

[0086] 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 in the channel 3. As described above, the third coating area can 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 large, it will affect the quality of functional film 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 in the channel 3, which can improve the anti-fingerprint and hydrophobic properties of the surface of the first optical cover plate 61 without damaging the quality of the anti-fingerprint layer 62.

[0087] Figure 7 for Figure 1 The cross-sectional view at CC in Fig. Figure 7. In one embodiment, the electronic device also includes a display module 7 and a second optical cover plate 8. Among them, the second optical cover plate 8 can be an optical glass, which can cover the surface of the display module 7. The surface of the second optical cover plate 8 can be provided with an anti-fingerprint layer 62 for waterproofing, anti-fingerprinting, etc. The display module 7 can be a liquid crystal display (LCD), an organic light-emitting diode (OLED), etc., and the display module 7 has an optical film that is sensitive to liquids, such as a polarizer, etc. Different optical film layers can be bonded by optically clear adhesive (OCA), but when the OCA adhesive comes into contact with liquids such as grease, the OCA adhesive may be swollen and deformed, resulting in failure of the bonding interface, causing abnormal function 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 the display module 7 to malfunction or fail.

[0088] To this end, in this embodiment, refer to Figure 7 The housing 1 is provided with a mounting groove 72, the display module 7 and the second optical cover plate 8 are both provided in the mounting groove 72, the display module 7 is connected to the bottom of the mounting groove 72, the second optical cover plate 8 is connected to the side of the display module 7 away from the bottom of the mounting groove 72, and there is a second gap between the edges of the display module 7 and the second optical cover plate 8 and the side walls of the mounting groove 72. The second gap can be an assembly gap, and a channel 3 can be formed at the second gap, that is, the side walls of the mounting groove 72, at least part of the bottom of the mounting groove 72, at least part of the side surface of the display module 7 and at least part of the side surface of the second optical cover plate 8 are the inner walls of the channel 3. The nano-hydrophobic film in the channel 3 continuously extends and covers at least part of the surface of the housing 1 away from the display module 7 and the second optical cover plate 8, and the nano-hydrophobic film in the channel 3 continuously extends and covers at least part of the surface of the second optical cover plate 8 away from the display module 7. The nano-hydrophobic film layer is a continuous film layer, which can cover the side of the display module 7, isolate the liquid, and prevent the liquid-sensitive parts of the display module 7 from failing after contacting the liquid. The nano-hydrophobic layer can also cover part of the surface of the second optical cover plate 8, which can improve the anti-fingerprint property of the surface of the second optical cover plate 8, while not damaging the quality of the anti-fingerprint layer 62.

[0089] In one embodiment, referring to Figure 7The display module 7 is connected to the bottom of the mounting groove 72 by bonding the sealing material layer 71, and at least part of the side surface of the sealing material layer 71 is the inner wall of the channel 3. The sealing material layer 71 can be an optical adhesive, such as OCA adhesive. By providing a nano-hydrophobic film on the surface of the OCA adhesive used as the inner wall of the channel 3, liquid can be prevented from contacting the OCA adhesive to ensure the effectiveness of the OCA adhesive.

[0090] Figure 8 A top view of an electronic device provided by an embodiment of the present application, Fig. 9 for Figure 8 The cross-sectional view at DD in Figure 8 and Fig. 9 . In one embodiment, a first through hole 11 is provided on the housing 1. Exemplarily, the housing 1 may be a battery cover, or the housing 1 may be a combination of a battery cover and a structural member. The structure may be a structure located inside the housing 1, and may 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 may be an 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 shell 1, and a second through hole 631 is arranged on the third optical cover plate 63, and 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 a channel 3, and 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, and 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, and 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 shell 1. The secondary microphone assembly 22 and the waterproof breathable membrane 5 are arranged on the side of the housing 1 away from the third optical cover plate 63, one side of the waterproof breathable membrane 5 abuts against the secondary microphone assembly 22, and the side of the waterproof breathable membrane 5 away from the secondary microphone assembly 22 abuts against the housing 1, and is used to close the end of the first through hole 11 away from the third optical cover plate 63, and a nano-hydrophobic membrane is arranged on the surface of the waterproof breathable membrane 5 for closing the first through hole 11. Among them, since the second through hole 631 is opened on the third optical cover plate 63, the surface of the third optical cover plate 63 around the second through hole 631 can be provided with a nano-hydrophobic membrane, so as to prevent liquid from adhering near the second through hole 631 and improve the anti-fingerprint performance of the third optical cover plate 63. Among them, the nano-hydrophobic membranes on the surfaces of the first through hole 11, the second through hole 631, the waterproof breathable membrane 5 and the third optical cover plate 63 are all continuous film layers and are made of the same material.

[0091] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An electronic device, comprising a housing and a functional component, wherein the functional component is connected to the housing, characterized in that: The electronic device is provided with a channel, one end of which 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.

2. The electronic device according to claim 1, characterized in that: The channel includes an inner side surface and a bottom surface. Along the direction in which the channel passes through the electronic device, the functional component is arranged on one side of the channel, and at least a part of the functional component is the bottom surface. A first hydrophobic film layer is arranged on the bottom surface, and a second hydrophobic film layer is arranged on the inner side surface. 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 to and covers at least a portion of the surface of the housing away from the functional component.

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

6. The electronic device according to claim 5, characterized in that: The nano-hydrophobic film is arranged on a side of the waterproof 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 the channel penetrates the housing along the thickness direction of the electronic device; The functional component includes a first optical cover plate, a secondary microphone assembly and a waterproof breathable membrane, wherein the first optical cover plate is disposed on one side of the housing along the thickness direction of the electronic device, and at least a partial projection of the first optical cover plate coincides with at least a partial projection of the channel, a first gap is provided between the first optical cover plate and at least a partial edge of the channel, and the nano-hydrophobic membrane in the channel continuously extends through the first gap and covers the surface of the housing close to the first optical cover plate; A first coating area is provided on a side of the first optical cover plate facing the channel, a second coating area is provided on a side of the first optical cover plate, and a third coating area is provided on a side of the first optical cover plate away from the housing; along the thickness direction of the electronic device, the projections of the first coating area, the second coating area and the third coating area respectively overlap or at least partially overlap with the projection of the channel; the first coating area, the second coating area and the third coating area are all provided with the nano-hydrophobic film; The secondary microphone assembly and the waterproof breathable membrane are arranged on a side of the shell away from the first optical cover plate, one side of the waterproof breathable membrane abuts against the secondary microphone assembly, and a side of the waterproof breathable membrane away from the secondary microphone assembly abuts against the shell, which is used to close an end of the channel away from the first optical cover plate, and the nano-hydrophobic film is provided on the surface of the waterproof breathable membrane used to close the channel.

8. The electronic device according to claim 7, characterized in that: An anti-fingerprint layer is disposed on a surface of the first optical cover plate away from the housing, and at least a portion of the anti-fingerprint layer is the third coating area.

9. The electronic device according to claim 7, characterized in that: The thickness of the nano-hydrophobic film on the third coating area is smaller than the thickness of the nano-hydrophobic film in the channel.

10. The electronic device according to claim 1, characterized in that: The electronic device also includes a display module and a second optical cover plate, the shell is provided with a mounting groove, the display module and the second optical cover plate are both arranged 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 away from the bottom of the mounting groove, and a second gap is provided 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 part of the bottom of the mounting groove, at least part of the side surfaces of the display module and at least part of the side surfaces of the second optical cover plate are inner walls of the channel, the nano-hydrophobic film in the channel continuously extends and covers at least part of the surface of the shell 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 part of the surface of the second optical cover plate away from the display module.

11. The electronic device according to claim 10, characterized in that: The display module is connected to the bottom of the mounting groove through an adhesive sealing material layer, and at least part of the 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 the housing along the thickness direction of the electronic device; The functional component comprises a third optical cover plate, a secondary microphone assembly and a waterproof breathable membrane, wherein the third optical cover plate is arranged on one side of the housing along the thickness direction of the electronic device, a second through hole is arranged on the third optical cover plate, the second through hole is communicated with the first through hole, the inner wall of the first through hole and the inner wall of the second through hole are the inner walls of the channel, and the nano-hydrophobic membrane in the channel continuously extends and covers at least a part of the surface of the third optical cover plate away from the housing; The secondary microphone assembly and the waterproof breathable membrane are arranged on a side of the shell away from the third optical cover plate, one side of the waterproof breathable membrane abuts against the secondary microphone assembly, and a side of the waterproof breathable membrane away from the secondary microphone assembly abuts against the shell and is used to close an end of the first through hole away from the third optical cover plate, and the nano-hydrophobic film is provided on the surface of the waterproof breathable membrane used to close the first through hole.

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

14. The electronic device according to any one of claims 1 to 12, characterized in that: The channel includes an opening, and the channel passes through the electronic device through the opening; Along the direction in which the channel passes through the electronic device, the thickness of the nano-hydrophobic film gradually decreases from an end of the channel having the opening to an end of the channel away from the opening.

15. The electronic device according to any one of claims 1 to 12, characterized in that: The thickness of the nano hydrophobic film is between 5nm and 150nm.

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