Electronic device

Abstract

The application discloses an electronic device, and belongs to the technical field of electronic devices. The electronic device comprises a frame assembly, a display assembly, a cover plate and a first adhesive. The frame assembly comprises a avoiding part. The display assembly is located in an enclosed area of the frame assembly. The edge of the cover plate overlaps the frame assembly. A containing gap is formed between the side of the cover plate and the frame assembly. An avoiding groove is formed between the avoiding part, the cover plate and the display assembly. The containing gap is communicated with the avoiding groove. At least a part of the avoiding groove is located on the side of the display assembly. The side of the display assembly is spaced apart from the frame assembly through the avoiding groove. The first adhesive is used to seal the gap between the side of the cover plate and the frame assembly. The first adhesive is also used to seal the gap between the side of the cover plate facing the display assembly and the frame assembly. The avoiding groove is used to contain the excess first adhesive.

Description

Technical Field

[0001] This application belongs to the field of electronic equipment technology, and specifically relates to an electronic device. Background Technology

[0002] The display module in electronic devices is the main medium for users to exchange information. Regarding the appearance of the display module, users are pursuing an increasingly higher screen-to-body ratio and reducing the visual interference of black borders around the screen, so as to meet the immersive experience of users in scenarios such as watching movies, playing games, and reading.

[0003] In electronic devices, the cover plate and the mid-frame are sealed together with adhesive. The width of this adhesive has certain requirements; reducing it further poses reliability risks, such as poor airtightness, moisture ingress leading to display failure, and cover plate detachment after drops. The adhesive on the mid-frame creates the aforementioned black border. Furthermore, a safety gap is maintained between the mid-frame and the display component to prevent collisions and compression during assembly. Therefore, while ensuring airtightness and maintaining the safety gap, further reducing the black border becomes a pressing issue. Utility Model Content

[0004] This application aims to provide an electronic device that solves the problem in related technologies where the display module of an electronic device has a wide black border that affects the visual experience.

[0005] To solve the above-mentioned technical problems, this application is implemented as follows:

[0006] This application provides an electronic device, including:

[0007] A frame assembly, the frame assembly including a clearance portion;

[0008] The display component is located within the area enclosed by the frame component;

[0009] A cover plate, the edge of which overlaps the frame assembly, and a receiving gap between the side of the cover plate and the frame assembly. A clearance groove is formed between the clearance portion, the cover plate, and the display assembly. The receiving gap communicates with the clearance groove. At least a portion of the clearance groove is located on the side of the display assembly. The side of the display assembly is spaced apart from the frame assembly through the clearance groove.

[0010] The first adhesive is used to seal the gap between the side of the cover plate and the frame assembly, and the first adhesive is used to seal the gap between the side of the cover plate facing the display assembly and the frame assembly, and the clearance groove is used to accommodate excess first adhesive.

[0011] In the embodiments of this application, a clearance groove is provided on the side of the frame assembly, at least a portion of which is located on the side of the display assembly. The clearance groove provides clearance space, thereby separating the sides of the frame assembly and the display assembly and reserving a safety gap between them to avoid collisions and squeezing between the frame assembly and the display assembly during assembly. The first adhesive is allowed to overflow onto the side of the display assembly, but not onto the back. This is because system reliability testing revealed no screen failure issues when the adhesive is applied to the side of the display assembly, but a probabilistic screen cracking problem occurs when the adhesive is applied to the back. This is because the back of the display assembly is more fragile than the side, and the back can withstand less impact stress. Since the sidewalls of the frame assembly are usually thicker, the stress transmitted to the side of the display assembly is relatively small. However, once the first adhesive adheres to the back of the display assembly, the stress will be transmitted to the back of the display assembly. In addition, the back of the display assembly itself can withstand less stress, which easily leads to the risk of failure.

[0012] In this embodiment, an avoidance groove is provided on the side of the frame assembly. The avoidance groove is connected to the receiving gap. Therefore, when a large amount of the first adhesive is used, the first adhesive can flow into the interior of the avoidance groove. The avoidance groove can accommodate the excess first adhesive and prevent the first adhesive from flowing to the back of the display assembly, thereby reducing the risk of display assembly failure.

[0013] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0014] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0015] Figure 1 This is a schematic diagram of the structure of an electronic device according to an embodiment of this application;

[0016] Figure 2 This is a partial schematic diagram of an electronic device according to an embodiment of this application;

[0017] Figure 3 This is a partial schematic diagram of an electronic device according to an embodiment of this application;

[0018] Figure 4 This is a partial schematic diagram of an electronic device according to an embodiment of this application;

[0019] Figure 5 This is a schematic diagram of the cover plate and ink layer according to an embodiment of this application.

[0020] Figure label:

[0021] 100 Electronic device, 110 Frame assembly, 111 Clearance groove, 112 Clearance surface, 114 Limiting part, 115 Metal frame, 116 Non-metallic back cover, 117 Clearance part, 119 Support part, 120 Display assembly, 130 Cover plate, 131 Accommodating gap, 140 First colloid, 150 Ink layer, 160 Second colloid, 170 Black edge. Detailed Implementation

[0022] The embodiments of this application will now be described in detail. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0023] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise stated, "multiple" means two or more. Furthermore, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0024] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0025] The following is combined with Figures 1-5 This application describes an electronic device according to an embodiment of the present application.

[0026] Combination Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, in some embodiments of this application, an electronic device 100 is proposed. The electronic device 100 includes: a frame assembly 110, a display assembly 120, a cover plate 130, and a first adhesive 140. The frame assembly 110 includes a clearance portion 117, and the display assembly 120 is located within the area enclosed by the frame assembly 110. The edge of the cover plate 130 overlaps with the frame assembly 110, and a receiving gap 131 is provided between the side of the cover plate 130 and the frame assembly 110. The clearance portion 117, the cover plate 130, and the display assembly 120 together form a clearance groove 111, and the receiving gap 131 communicates with the clearance groove 111. At least a portion of the clearance groove 111 is located on the side of the display assembly 120, and the side of the display assembly 120 is spaced apart from the frame assembly 110 through the clearance groove 111. The first colloid 140 is used to seal the gap between the side of the cover plate 130 and the frame assembly 110, and the first colloid 140 is used to seal the gap between the side of the cover plate 130 facing the display assembly 120 and the frame assembly 110, and the clearance groove 111 is used to accommodate excess first colloid 140.

[0027] The side of the frame assembly 110 has a ring structure. The display assembly 120 is located in the area enclosed by the frame assembly 110. The edge of the cover plate 130 overlaps with the frame assembly 110. The frame assembly 110 supports the cover plate 130. The frame assembly 110 and the cover plate 130 are bonded together by a first adhesive 140. The first adhesive 140 not only connects the frame assembly 110 and the cover plate 130, but also prevents external dust, impurities, and liquids from entering the interior of the electronic device 100 through the space between the frame assembly 110 and the cover plate 130.

[0028] To ensure a tight seal between the frame assembly 110 and the cover plate 130, the first adhesive 140 between them needs to have sufficient width. However, a larger width of the first adhesive 140 will result in a larger black border on the display screen of the electronic device 100. If the black border size is to be further reduced, the sealing width of the bottom surface of the cover plate 130 needs to be reduced, which may lead to reliability issues such as display screen failure (due to poor airtightness causing moisture to enter the entire device) and the cover plate 130 detaching after a drop.

[0029] In this embodiment, a first adhesive 140 is provided on the side of the cover plate 130. The side of the cover plate 130 facing the display component 120 is the first side of the cover plate 130. The edge of the first side of the cover plate 130 is also provided with the first adhesive 140. In this case, the side of the cover plate 130 and the frame component 110 are sealed together by the first adhesive 140, and the first side of the cover plate 130 and the frame component 110 are also sealed together by the first adhesive 140. This embodiment forms a sealing form of the side of the cover plate 130 plus the bottom surface of the cover plate 130. By using the side of the cover plate 130 for bonding and sealing, while ensuring the sealing width between the cover plate 130 and the frame component 110, the sealing width of the bottom surface of the cover plate 130 can be shortened. This can reduce the width of the black border on the display screen of the electronic device 100, reduce the visual interference of the surrounding black border, and meet the user's immersive experience in scenarios such as watching movies, playing games, and reading.

[0030] The clearance groove 111 is located on the inward side of the frame assembly 110, and at least a portion of the clearance groove 111 is located on the side of the display assembly 120. The clearance groove 111 provides clearance space, thereby separating the sides of the frame assembly 110 and the display assembly 120 and reserving a safety gap between the frame assembly 110 and the display assembly 120 to avoid collision and squeezing between the frame assembly 110 and the display assembly 120 during the assembly process. The first adhesive 140 is allowed to overflow onto the side of the display component 120, but not onto the back of the display component 120 (mainly the panel layer). The back of the display component 120 refers to the side of the display component 120 facing away from the cover plate 130. This is because, after system reliability testing, it was found that there was no screen failure problem when the adhesive was applied to the side of the display component 120, but once the adhesive was applied to the back of the display component 120, there was a probabilistic screen cracking problem. This is because the back of the display component 120 is more fragile than the side, and the back of the display component 120 can withstand less impact stress. Since the sidewall of the frame component 110 is usually thicker, the stress transmitted to the side of the display component 120 is relatively small. However, once the first adhesive 140 is bonded to the back of the display component 120, the stress will be transmitted to the back of the display component 120. In addition, the back of the display component 120 itself can withstand less stress, which easily leads to the risk of failure.

[0031] In this embodiment, a clearance groove 111 is provided on the side of the frame assembly 110. The clearance groove 111 is connected to the receiving gap 131. Therefore, when a large amount of the first adhesive 140 is used, the excess first adhesive 140 will flow out between the cover plate 130 and the frame assembly 110. The excess first adhesive 140 will flow into the interior of the clearance groove 111. The clearance groove 111 is used to receive the excess first adhesive 140. The clearance groove 111 provides a receiving space for the excess first adhesive 140. The excess first adhesive 140 will stay in the clearance groove 111, thereby preventing the first adhesive 140 from flowing to the back of the display assembly 120, thereby reducing the risk of failure of the display assembly 120.

[0032] Figure 1 In the present invention, the electronic device 100 has a black border 170 in the circumferential direction. The widths of the black border 170 on different sides of the electronic device 100 are W1 and W2, respectively. By setting the first colloid 140 in this embodiment, the width of the black border 170 can be reduced, that is, W1 and W2 are reduced.

[0033] It should be noted that, Figure 2 and Figure 3 yes Figure 1 A partial view of the screenshot taken along the AA direction. Figure 4 The first colloid 140 was hidden in order to show the clearance groove 111.

[0034] Figure 2 In the middle, the area within the dashed box is the clearance groove 111, which is filled with the first colloid 140.

[0035] Combination Figure 2 and Figure 3 As shown, in one possible embodiment, the clearance groove 111 is provided with a first colloid 140.

[0036] During the process of applying adhesive between the frame assembly 110 and the cover plate 130, the amount of adhesive can be increased so that the first adhesive 140 flows into the clearance groove 111. This method can ensure that the first adhesive 140 is fully filled between the frame assembly 110 and the cover plate 130, which can ensure the connection stability between the frame assembly 110 and the cover plate 130, and also ensure good sealing between the frame assembly 110 and the cover plate 130.

[0037] Combination Figure 2 and Figure 3 As shown, in one possible embodiment, the avoidance portion 117 is provided with an avoidance surface 112 facing the display component 120. From the bottom to the top of the avoidance surface 112, the avoidance surface 112 bends away from the display component 120.

[0038] The clearance surface 112 in the clearance portion 117 faces the display assembly 120. It is illustrated by way of view with the cover plate 130 located at the top of the clearance groove 111. From the bottom to the top of the clearance surface 112, the clearance surface 112 is curved away from the display assembly 120. Therefore, at least a portion of the clearance surface 112 is a curved structure. The curved structure facilitates the smooth downward flow of excess first colloid 140, avoids the accumulation of excess first colloid 140 in the upper region of the clearance groove 111, and thus avoids the excess first colloid 140 from squeezing the side of the display assembly 120.

[0039] Combination Figure 2 and Figure 3 As shown, in one possible embodiment, the distance between the bottom surface of the display component 120 and the cover plate 130 is H1, and the distance between the bottom of the clearance groove 111 and the cover plate 130 is H2, where H2 > H1.

[0040] Taking the cover plate 130 as an example from the perspective of being located at the top of the clearance groove 111, the distance between the bottom of the display component 120 and the cover plate 130 is H1, and the distance between the bottom of the clearance groove 111 and the cover plate 130 is H2, where H2 > H1. Therefore, a portion of the clearance groove 111 protrudes from the bottom of the display component 120, so that the clearance groove 111 has sufficient accommodating space, thereby ensuring that the first colloid 140 can be effectively accommodated in the clearance groove 111, and preventing the first colloid 140 from overflowing to the outside of the clearance groove 111. Furthermore, if the bottom of the clearance groove 111 is flush with the bottom surface of the display component 120, the first colloid 140 inside the clearance groove 111 may flow along the bottom of the clearance groove 111 toward the bottom surface of the display component 120. However, in this embodiment, the clearance groove 111 protrudes from the bottom of the display component 120. When the first colloid 140 flows downward in the clearance groove 111, the first colloid 140 is less likely to flow toward the bottom surface of the display component 120, further reducing the probability of the first colloid 140 contacting the bottom surface of the display component 120.

[0041] Combination Figure 2 and Figure 3 As shown, in one possible embodiment, along the thickness direction of the cover plate 130 ( Figure 2 (The arrow at H in the middle points to) The length of the first colloid 140 on the side of the cover plate 130 is L, and L≥0.7mm.

[0042] The length of the first adhesive 140 located on the side of the cover plate 130 must be at least 0.7 mm. Within this range, there is sufficient sealing size between the side of the cover plate 130 and the frame assembly 110, so as to minimize the sealing size between the bottom of the cover plate 130 and the frame assembly 110, thereby helping to reduce the size of the black edge.

[0043] Combination Figure 2 and Figure 3 As shown, in one possible embodiment, the width of the first adhesive 140 between the side of the cover plate 130 facing the display component 120 and the frame component 110 is W, where W ≥ 0.2 mm.

[0044] The width of the first adhesive 140 between the side of the cover plate 130 facing the display component 120 and the frame component 110 is the width of the overlapping portion between the cover plate 130 and the frame component 110, that is, the width of the support position of the frame component 110 on the cover plate 130. In this embodiment, the width of this portion of the first adhesive 140 is limited to be greater than or equal to 0.2 mm, indicating that the width of the support position of the frame component 110 on the cover plate 130 is greater than or equal to 0.2 mm. Within this range, the frame component 110 can stably support the cover plate 130.

[0045] Combination Figure 2 , Figure 3 and Figure 5 As shown, in one possible embodiment, the surface of the cover plate 130 is provided with an ink layer 150, which is located between the first colloid 140 and the cover plate 130.

[0046] An ink layer 150 is provided on the side and bottom of the cover plate 130, and the ink layer 150 is located between the first colloid 140 and the cover plate 130. The ink layer 150 can improve the adhesion of the first colloid 140 to the surface of the cover plate 130, thereby improving the bonding and sealing effect of the first colloid 140 between the frame assembly 110 and the cover plate 130.

[0047] Combination Figure 2 and Figure 3 As shown, in one possible embodiment, the frame assembly 110 further includes a limiting portion 114 connected to the clearance portion 117. The limiting portion 114 is located on the side of the cover plate 130, and the top of the limiting portion 114 is bent toward the cover plate 130.

[0048] The limiting part 114 is disposed on the top of the avoidance part 117 and is located on the side of the cover plate 130. The side of the limiting part 114 away from the avoidance part 117 is the top of the limiting part 114. In this embodiment, the top of the limiting part 114 is bent toward the cover plate 130, so that there is a small gap between the top of the limiting part 114 and the cover plate 130. Thus, it is difficult to see the first adhesive 140 between the limiting part 114 and the cover plate 130 on the appearance of the electronic device 100. It not only serves as a limiting part for the assembly of the cover plate 130, but also serves to cover the adhesive path, visually reducing the adhesive width and improving the exquisite and refined appearance.

[0049] Combination Figure 2 and Figure 3As shown, in one possible embodiment, the frame assembly 110 further includes a metal frame 115 and a non-metallic back shell 116. The metal frame 115 is connected to the clearance portion 117, and the non-metallic back shell 116 is sealed to the metal frame 115. A portion of the non-metallic back shell 116 is located within the area enclosed by the metal frame 115.

[0050] The metal frame 115 is located on the side of the clearance portion 117 opposite to the limiting portion 114. In this embodiment, the metal frame 115, the clearance portion 117, and the limiting portion 114 are an integral structure, all made of metal. The non-metallic back shell 116 extends upward, such that a portion of the non-metallic back shell 116 extends into the area enclosed by the metal frame 115. No plastic middle frame is needed between the metal frame 115 and the non-metallic back shell 116, effectively saving material for the middle frame. Furthermore, the non-metallic back shell 116 is sealed to the metal frame 115, preventing external dust or liquid from entering the interior of the electronic device 100 through the space between the metal frame 115 and the non-metallic back shell 116, thus improving the sealing performance of the electronic device 100.

[0051] In some technical solutions, the non-metallic back cover 116 is optionally provided with a support portion 119, which is used to support the bottom of the metal frame 115.

[0052] The support part 119 is used to support the bottom of the metal frame 115 to prevent the metal frame 115 from shaking relative to the non-metallic back shell 116 and to ensure the connection stability between the metal frame 115 and the non-metallic back shell 116.

[0053] Combination Figure 2 and Figure 3 As shown, in one possible embodiment, the electronic device 100 further includes a second colloid 160, wherein the second colloid 160 is provided between the side of the non-metallic back cover 116 facing the cover plate 130 and the metal frame 115, and the second colloid 160 is used to seal the gap between the non-metallic back cover 116 and the metal frame 115.

[0054] The top of the non-metallic back cover 116 supports the metal frame 115. The second adhesive 160 is placed between the top of the non-metallic back cover 116 and the metal frame 115. The second adhesive 160 seals the non-metallic back cover 116 and the metal frame 115, thereby improving the sealing performance between them.

[0055] This embodiment innovatively proposes a design scheme that can achieve a narrow black border design while significantly reducing costs. It does not sacrifice the sealing width of the cover plate 130, ensuring the waterproof and airtight requirements of the whole machine and avoiding problems such as screen display failure and cover plate 130 delamination.

[0056] The main improvements in this embodiment are:

[0057] First, the sealing method was changed from the conventional bottom sealing of the cover plate to the side + bottom sealing of the cover plate 130. The side of the cover plate 130 is used for adhesive sealing, which shortens the bottom sealing width of the cover plate 130.

[0058] Second, the ink coverage area of ​​cover plate 130 has been changed from the bottom annular area to the side + bottom annular area.

[0059] Third, to avoid the risk of display component 120 failing.

[0060] Fourth, the part of the cover plate 130 that is in adhesive contact with the frame assembly 110 is the metal frame 115 (not the plastic middle frame), and the plastic back shell (non-metallic back shell 116) extends upward into the internal area of ​​the metal frame 115 and is directly glued to the metal frame 115, without the need for the plastic middle frame.

[0061] Specifically, the cover plate 130 is fixed to the metal frame 115 via a first adhesive 140. To ensure the overall waterproof and airtightness of the machine, the sealing range of the cover plate 130 has the following requirements: the side sealing height is recommended to be greater than or equal to 0.7mm, and the bottom sealing width is recommended to be greater than or equal to 0.2mm. Adding side wall ribs (the top bending structure of the limiting part 114) to the metal frame 115 serves two main purposes: firstly, to limit the assembly of the cover plate 130; and secondly, to conceal the adhesive path, visually reducing the adhesive width and improving the refined and delicate appearance.

[0062] Due to the presence of sidewall ribs, a receiving gap 131 is formed between the metal frame 115 and the sidewall of the cover plate 130, ensuring effective sealing of the sidewall of the cover plate 130. Simultaneously, a certain proportion of adhesive flows to the sidewall of the display component 120. By employing a large radius corner feature on the metal frame 115, the distance between the metal frame 115 and the display component 120 is increased, preventing adhesive from remaining on the back of the display component 120. Furthermore, in actual projects, reducing the amount of adhesive and optimizing the adhesive path can effectively prevent adhesive from overflowing onto the back of the display component 120.

[0063] Specifically, the plastic back shell extends upward and is fixed to the metal frame 115 by the second adhesive 160, eliminating the need for a plastic middle frame, effectively saving middle frame material. At the same time, the use of adhesive fixing replaces the traditional one-piece injection molding process for the middle frame, significantly reducing costs.

[0064] An ink coating is added to the side of the cover plate 130. To ensure consistent appearance and effective adhesion with the adhesive, the ink is applied using a dot spray nozzle to ensure effective adhesion of the side ink.

[0065] Compared with conventional black border design solutions, the solution in this embodiment can effectively reduce the visual black border, increase the screen ratio, and has significant cost advantages.

[0066] The narrow black bezel design solution involved in this application is not only applicable to smartwatches, but can also be applied to consumer electronic products such as mobile phones, tablets, desktop computers, personal game consoles, and laptops. As long as this solution is used, it is within the protection scope of this application.

[0067] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0068] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. An electronic device, characterized in that, include: A frame assembly, the frame assembly including a clearance portion; The display component is located within the area enclosed by the frame component; A cover plate, the edge of which overlaps the frame assembly, a receiving gap between the side of the cover plate and the frame assembly, a clearance groove formed by the clearance portion, the cover plate and the display assembly, the receiving gap communicating with the clearance groove, at least a portion of the clearance groove being located on the side of the display assembly, and the side of the display assembly being spaced apart from the frame assembly through the clearance groove; A first colloid, the first colloid being used to seal the gap between the side of the cover plate and the frame assembly, and the first colloid being used to seal the gap between the side of the cover plate facing the display assembly and the frame assembly, the clearance groove being used to accommodate excess first colloid; The avoidance part is provided with an avoidance surface facing the display component. The avoidance surface curves away from the display component from its bottom to its top.

2. The electronic device according to claim 1, characterized in that, The distance between the bottom surface of the display component and the cover plate is H1, and the distance between the bottom of the clearance groove and the cover plate is H2, where H2 > H1.

3. The electronic device according to claim 1 or 2, characterized in that, Along the thickness direction of the cover plate, the length of the first colloid on the side of the cover plate is L, where L ≥ 0.7 mm.

4. The electronic device according to claim 1 or 2, characterized in that, The width of the first adhesive between the side of the cover plate facing the display component and the frame component is W, where W ≥ 0.2 mm.

5. The electronic device according to claim 1 or 2, characterized in that, The surface of the cover plate is provided with an ink layer, which is located between the first colloid and the cover plate.

6. The electronic device according to claim 1 or 2, characterized in that, The frame assembly also includes a limiting part, which is connected to the clearance part. The limiting part is located on the side of the cover plate, and the top of the limiting part is bent toward the cover plate.

7. The electronic device according to claim 1 or 2, characterized in that, The frame assembly also includes: A metal frame, which is connected to the clearance portion; A non-metallic back cover is sealed to the metal frame, and a portion of the non-metallic back cover is located within the area enclosed by the metal frame.

8. The electronic device according to claim 7, characterized in that, The non-metallic rear shell is provided with a support portion, which is used to support the bottom of the metal frame.

9. The electronic device according to claim 7, characterized in that, The electronic device also includes: A second colloid is provided between the non-metallic back shell and the metal frame on the side facing the cover plate. The second colloid is used to seal the gap between the non-metallic back shell and the metal frame.

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