Electronic device

Abstract

The utility model provides electronic equipment, and belongs to the technical field of electronics. The electronic equipment comprises an equipment body, a screen module and a connecting structure, the device body comprises a mounting groove, and the screen module is located in the mounting groove; the connecting structure comprises a back glue structure, a dispensing structure and a joining structure; the gum structure is positioned in the mounting groove and is used for connecting at least one edge of the screen module with the bottom surface of the mounting groove in a bonding manner; a step part is arranged on the side wall of the other edge, corresponding to the screen module, of the mounting groove, and the dispensing structure is located on the step part and used for bonding the bottom edge of the screen module to the step part; the connecting structures are located at the two ends of the step part and connected with the adhesive dispensing structure and the adhesive applying structure correspondingly, so that the adhesive applying structure and the adhesive dispensing structure are connected to form a closed ring. The electronic equipment provided by the utility model is beneficial to reducing the width of the frame or the black edge of the screen, thereby being beneficial to improving the screen ratio of the electronic equipment and realizing the effect of a narrow frame.

Description

Technical Field

[0001] The utility model relates to the field of electronic technology, and particularly relates to an electronic device. Background Art

[0002] As electronic devices penetrate all aspects of our lives, waterproofness has become an important indicator for measuring the comprehensive performance of electronic devices. In the waterproofing solution on the screen side, it is usually achieved by bonding the cover plate of the screen to the middle frame / front shell through back glue or dot glue for waterproofing, and a certain width of dot glue is required to achieve this, which will result in a larger border or black edge of the screen (the distance from the AA area of the screen to the outer shape of the CG cover plate), reducing the screen ratio of the electronic device. Summary of the Utility Model

[0003] The utility model provides an electronic device, which can solve the problem that the waterproofing on the screen side causes a larger border / black edge, reducing the screen ratio.

[0004] The technical solution is as follows:

[0005] An electronic device, comprising: a device body, a screen module and a connection structure;

[0006] The device body includes an installation groove, and the screen module is located in the installation groove;

[0007] The connection structure includes a back glue structure, a dot glue structure and a connection structure;

[0008] The back glue structure is located in the installation groove and is used for adhesively connecting at least one edge of the screen module to the bottom surface of the installation groove;

[0009] A step portion is provided on the side wall of the installation groove corresponding to the other edge of the screen module, and the dot glue structure is located on the step portion and is used for adhesively bonding the bottom edge of the screen module to the step portion;

[0010] The connection structure is located at both ends of the step portion, and the connection structure connects the dot glue structure and the back glue structure respectively, so that the back glue structure and the dot glue structure are connected to form a closed ring.

[0011] In some embodiments, the back glue structure corresponds to the top edge and two side edges of the screen module, and the dot glue structure corresponds to the bottom edge of the screen module;

[0012] The connection structure corresponds to both ends of the bottom edge of the screen module.

[0013] In some embodiments, the installation groove is provided with at least two glue injection holes, the glue injection holes are close to the position of the step portion, one end of the glue injection hole is located on the step portion, and the other end of the glue injection hole is located on the bottom surface of the installation groove;

[0014] The glue injection holes are used for injecting liquid glue, and the connecting structure is formed by the condensation of the liquid glue in the glue injection holes.

[0015] In some embodiments, the device body includes a plastic part and a metal part combined by injection molding; there is at least one strip-shaped bonding gap between the plastic part and the metal part;

[0016] When the bonding structure has the bonding gap within the bonding area on the bottom surface of the installation groove, the distance L1 between the bonding gap and the outer edge of the bonding structure is greater than or equal to a first target value.

[0017] In some embodiments, at least part of the bonding area of the bonding structure on the bottom surface of the installation groove is located on the plastic part.

[0018] In some embodiments, an anti-seepage groove is provided at the position where the bonding gap is located, liquid glue is injected into the anti-seepage groove, and the liquid glue in the anti-seepage groove is bonded to the bonding structure after condensation.

[0019] In some embodiments, the outer edge of the bonding structure is located on the plastic part, and the width L2 of the bonding area between the bonding structure and the plastic part is greater than or equal to a second target value.

[0020] In some embodiments, both the first target value and the second target value are greater than or equal to 1.5 mm.

[0021] In some embodiments, the metal part includes an antenna metal body and a middle plate metal body;

[0022] The antenna metal body is located within the frame area of the device body, the middle plate metal body is located within the middle plate area of the device body, a connecting material cutting groove is provided between the antenna metal body and the middle plate metal body, and liquid glue is injected into the connecting material cutting groove.

[0023] In some embodiments, the device body includes a front shell or a middle frame, and the installation groove is located on the front shell or the middle frame;

[0024] and / or,

[0025] The screen module includes a cover plate and a display body, the display body is located on the side of the cover plate facing the installation groove, the bonding structure is located between the bottom surface of the installation groove and the display body, and the glue dispensing structure is located between the step portion and the cover plate.

[0026] The beneficial effects brought by the technical solution provided by the present utility model at least include:

[0027] For the electronic device of the present utility model, the screen module is installed in the installation groove of the device body. At least one edge of the screen module is adhesively connected to the bottom surface of the installation groove through an adhesive structure, and the other edge of the screen module is adhesively connected to the step portion on the side wall of the installation groove through a dispensing structure. The adhesive structure and the dispensing structure are connected to each other through a connecting structure to form a closed ring, realizing the waterproof and sealed connection between the screen module and the device body. Among them, there is no need to reserve a dispensing width for the edge of the screen module connected by the adhesive structure, which is beneficial to reducing the frame or black edge width of the screen, thereby being beneficial to increasing the screen ratio of the electronic device and achieving the effect of a narrow frame. Description of the Drawings

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0029] Figure 1 is the exploded view of the structure of the electronic device provided by the embodiment of the present utility model;

[0030] Figure 2 is the cross-sectional view of the structure of the electronic device provided by the embodiment of the present utility model;

[0031] Figure 3 is the partial structure view of the electronic device provided by the embodiment of the present utility model;

[0032] Figure 4 is the partial structure view of the electronic device provided by another embodiment of the present utility model;

[0033] Figure 5 is the cross-sectional view of the structure of the electronic device provided by another embodiment of the present utility model;

[0034] Figure 6 is the cross-sectional view of the structure of the electronic device provided by another embodiment of the present utility model.

[0035] The reference numerals in the drawings are respectively represented as:

[0036] 1. Device body;

[0037] 11. Installation groove; 111. Glue injection hole; 112. Step part; 12. Plastic part; 13. Metal part; 131. Antenna metal body; 132. Middle plate metal body; 14. Joint gap; 15. Anti-seepage groove; 16. Joint material cutting groove;

[0038] 2. Screen module;

[0039] 201, top edge; 202, side edge; 203, bottom edge;

[0040] 21. Cover plate; 22. Display body;

[0041] 3. Connection structure;

[0042] 31. Adhesive backing structure; 3101. Outer edge; 32. Glue point structure; 33. Connection structure. DETAILED DESCRIPTION

[0043] Here, exemplary embodiments will be described in detail, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the utility model. Instead, they are only examples of devices and methods consistent with some aspects of the utility model as detailed in the attached claims.

[0044] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate directions or positional relationships based on the attached Figure 1 The orientation or positional relationship shown is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0045] It should be understood that "connected" and "connected" can refer to a mechanical connection relationship or a physical connection relationship, that is, A and B are connected or A and B are connected can mean that there are fastening components (such as screws, bolts, rivets, etc.) between A and B, or A and B are in contact with each other and A and B are difficult to separate.

[0046] Unless otherwise defined, all technical terms used in the embodiments of the present invention have the same meanings as commonly understood by those skilled in the art.

[0047] The present utility model provides an electronic device. Specifically, the electronic device can be any one of various types of mobile or portable computer system devices. Specifically, the electronic device can be a mobile phone or a smart phone (e.g., an iPhone TM - based phone, an Android TM - based phone), a portable gaming device (e.g., a Nintendo DS TM, a PlayStation Portable TM, a Gameboy Advance TM, an iPhone TM), a laptop computer, a PDA, a portable Internet device, a music player, and a data storage device, other handheld devices, and devices such as headsets, etc. The electronic device can also be other wearable devices that need to be charged (e.g., a head - mounted device (HMD) such as an electronic bracelet, an electronic necklace, an electronic device, or a smart watch).

[0048] In some cases, the electronic device can perform multiple functions (e.g., playing music, displaying videos, storing pictures, and receiving and sending phone calls). If necessary, the electronic device can be a device such as a cellular phone, a media player, other handheld devices, a wrist - watch device, a pendant device, a headset device, or other compact and portable devices.

[0049] To make the objectives, technical solutions, and advantages of the present utility model clearer, the embodiments of the present utility model will be further described in detail below with reference to the accompanying drawings.

[0050] On the one hand, as shown in combination with Figure 1 and Figure 2 , an embodiment of the present utility model provides an electronic device, which includes: a device body 1, a screen module 2, and a connection structure 3.

[0051] The device body 1 includes a mounting groove 11, and the screen module 2 is located in the mounting groove 11; the connection structure 3 includes an adhesive - backing structure 31, a dispensing structure 32, and a connecting structure 33; the adhesive - backing structure 31 is located in the mounting groove 11 and is used for adhesively connecting at least one edge of the screen module 2 to the bottom surface of the mounting groove 11; a step portion 112 is provided on the side wall of the mounting groove 11 corresponding to the other edge of the screen module 2, and the dispensing structure 32 is located on the step portion 112 and is used for adhesively bonding the bottom edge 203 of the screen module 2 to the step portion 112; the connecting structure 33 is located at both ends of the step portion 112, and the connecting structure 33 connects the dispensing structure 32 and the adhesive - backing structure 31 respectively, so that the adhesive - backing structure 31 and the dispensing structure 32 are connected to form a closed ring.

[0052] In the electronic device of this embodiment, the screen module 2 is installed in the installation groove 11 of the device body 1. At least one edge of the screen module 2 is adhesively connected to the bottom surface of the installation groove 11 through the back glue structure 31, and the other edge of the screen module 2 is adhesively connected to the step portion 112 on the side wall of the installation groove 11 through the dispensing structure 32. The back glue structure 31 and the dispensing structure 32 are connected to each other through the connection structure 33 to form a closed ring, realizing the waterproof and sealed connection between the screen module 2 and the device body 1. Among them, there is no need to reserve the dispensing width for the edge of the screen module 2 connected by the back glue structure 31, which is beneficial to reducing the frame or black edge width of the screen, thereby being beneficial to improving the screen ratio of the electronic device and achieving the effect of a narrow frame.

[0053] In some possible implementation manners, the back glue structure 31 is an auxiliary material for pasting connection, which has a reliable adhesive effect and can improve the production and use performance of the electronic device. The material of the back glue structure 31 includes a double-sided tape of PET (Polyethylene terephthalate, polyethylene terephthalate). This tape uses a PET substrate as the double-sided tape, has the characteristics of anti-rebound, warping, and heat resistance, and has a thickness of 0.05 mm. The characteristics of the PET substrate can meet the requirements for pasting strength and durability in mass production.

[0054] In some other possible implementation manners, the dispensing structure 32 is a colloidal structure formed by the dispensing process. Dispensing is to apply, encapsulate, or drip electronic glue, oil, or other liquids onto the product to achieve functions such as pasting, encapsulating, insulating, fixing, and smooth surface.

[0055] In some other possible implementation manners, the connection structure 33 is used to connect the dispensing structure 32 and the back glue structure 31 together to form a closed ring. The connection structure 33 can be the back glue structure 31, or the dispensing structure 32, or other colloidal or flexible body structures, which can provide a local waterproof and sealed effect and can achieve a waterproof and sealed combination with the dispensing structure 32, the back glue structure 31, and the device body 1 respectively.

[0056] Combined Figure 1 As shown, in some embodiments, the back glue structure 31 corresponds to the top edge 201 and the two side edges 202 of the screen module 2, the dispensing structure 32 corresponds to the bottom edge 203 of the screen module 2; the connection structure 33 corresponds to both ends of the bottom edge 203 of the screen module 2.

[0057] With the above arrangement, the top edge 201 and the two side edges 202 of the screen module 2 are adhesively fixed using the adhesive structure 31, eliminating the need to reserve a dispensing width, which can reduce the border or black edge width of the top edge 201 and the two side edges 202, increasing the screen ratio. The bottom edge 203 of the screen module 2 is usually provided with a display flexible cable. After the display flexible cable extends from the bottom of the screen module 2, it folds towards the bottom surface of the screen module 2 and is electrically connected to the device body 1. Thus, the bottom edge 203 of the screen module 2 is connected to the step portion 112 on the side wall of the installation groove 11 to ensure the normal routing of the display flexible cable.

[0058] Combined with Figure 1 and Figure 3 As shown, in some embodiments, the installation groove 11 is provided with at least two glue injection holes 111. The glue injection holes 111 are close to the location of the step portion 112. One end of the glue injection hole 111 is located on the step portion 112, and the other end of the glue injection hole 111 is located on the bottom surface of the installation groove 11. The glue injection holes 111 are used for injecting liquid glue, and the connection structure 33 is formed by the condensation of the liquid glue in the glue injection holes 111.

[0059] With the above arrangement, the connection structure 33 is formed by the condensation of the liquid glue poured into the glue injection holes 111. The two ends of the glue injection holes 111 are respectively located on the step portion 112 and the bottom surface of the installation groove 11. After the liquid glue is poured in, it can contact the dispensing structure 32 on the step portion 112 and the adhesive structure 31 on the bottom surface of the installation groove 11 respectively. When the liquid glue condenses, the formed connection structure 33 is naturally connected between the dispensing structure 32 and the adhesive structure 31, and the three form a continuous sealing structure. The structure of the connection structure 33 is simple and easy to process, and can be easily completed using existing process equipment.

[0060] In some possible implementation manners, the glue injection holes 111 are arranged obliquely so that the two ends of the glue injection holes 111 can be respectively located on the step portion 112 and the bottom surface of the installation groove 11.

[0061] In some other possible implementation manners, the liquid glue poured into the glue injection holes 111 has a fluidity that meets the target requirements. It is necessary to ensure that the liquid glue will not flow randomly after being poured in, and can fill the glue injection holes 111 but will not overflow. The liquid glue needs to have sufficient adhesiveness so that it can achieve a waterproof sealing combination with the dispensing structure 32, the adhesive structure 31 and the device body 1.

[0062] Combined with Figure 2 and Figure 3 As shown, in some embodiments, the device body 1 includes a plastic part 12 and a metal part 13 combined by injection molding; there is at least one strip combination gap 14 between the plastic part 12 and the metal part 13.

[0063] When the bonding area of the adhesive structure 31 on the bottom surface of the installation groove 11 has a bonding gap 14, the distance L1 between the bonding gap 14 and the outer edge 3101 of the adhesive structure 31 is greater than or equal to the first target value.

[0064] In this embodiment, the device body 1 is formed by combining a plastic part 12 and a metal part 13, and at least one bonding gap 14 is formed at the bonding part of the plastic part 12 and the metal part 13. When the waterproof requirements are at a low level such as IPX3 and IPX4, the bonding gap 14 can meet the waterproof requirements. However, when dealing with high-level waterproof requirements such as IPX7 and IPX8, water seeps in through the bonding gap 14 and cannot meet the waterproof requirements. Therefore, if there is a bonding gap 14 in the bonding area of the adhesive structure 31, it is necessary to ensure that the distance L1 from the outer edge 3101 of the adhesive structure 31 to the bonding gap 14 is greater than or equal to the first target value, ensuring that there is enough waterproof sealing width between the outer edge 3101 of the adhesive structure 31 and the bonding gap 14, so as to prevent moisture from reaching the bonding gap 14.

[0065] Combined Figure 3 As shown, in some embodiments, at least part of the bonding area of the adhesive structure 31 on the bottom surface of the installation groove 11 is located on the plastic part 12.

[0066] Compared with the metal part 13, the plastic part 12 has better bonding performance and can achieve better waterproof sealing combination with the adhesive structure 31. Therefore, at least part of the bonding area of the adhesive structure 31 being located on the plastic part 12 can make the adhesive structure 31 have better waterproof sealing performance.

[0067] Combined Figure 4 and Figure 5 As shown, in some embodiments, an anti-seepage groove 15 is provided at the position where the bonding gap 14 is located, and liquid glue is poured into the anti-seepage groove 15. After the liquid glue in the anti-seepage groove 15 solidifies, it is adhesively connected to the adhesive structure 31.

[0068] In some cases, when the bonding gap 14 inevitably appears outside the adhesive structure 31 or the distance from the bonding gap 14 to the outer edge 3101 of the adhesive structure 31 is small, an anti-seepage groove 15 can be opened at the position where the bonding gap 14 is located, and then liquid glue is poured in. By means of the anti-seepage groove 15, the position of the bonding gap 14 can be changed, or even the bonding gap 14 can be eliminated, so that the liquid glue in the anti-seepage groove 15 is adhesively connected to the adhesive structure 31 after solidification, having a better waterproof sealing effect.

[0069] Exemplarily, by reasonably selecting the shape and size of the anti-seepage groove 15, the position of the bonding gap 14 can be adjusted so that the bonding gap 14 avoids the water-containing area or moves inward to a position with a sufficient distance from the outer edge 3101 of the adhesive structure 31, thereby improving the waterproof performance of the electronic device.

[0070] In some possible implementation manners, the gap formed after the liquid glue poured into the anti-seepage groove 15 is combined with the plastic part 12 has better waterproof effect. In contrast, the waterproof property of the gap formed after the liquid glue is combined with the metal part 13 is poor. Therefore, the arrangement of the anti-seepage groove 15 needs to ensure that the combined part of the liquid glue and the metal part 13 is located inside the back glue structure 31, or the distance from the outer edge 3101 is greater than or equal to the first target value.

[0071] Exemplarily, the liquid glue and the plastic part 12 are made of the same material or similar materials, and they have good bonding performance.

[0072] Combined Figure 3 As shown, in some embodiments, the outer edge 3101 of the back glue structure 31 is located on the plastic part 12, and the width L2 of the bonding area between the back glue structure 31 and the plastic part 12 is greater than or equal to the second target value.

[0073] Through the above arrangement, the outer edge 3101 of the back glue structure 31 is adhesively connected to the plastic part 12, and the bonding width meets the above value range, which is beneficial to further improving the waterproof performance of the back glue structure 31.

[0074] In some embodiments, both the first target value and the second target value are greater than or equal to 1.5 mm. When the first target value and the second target value meet the above value range, the back glue structure 31 has better waterproof and sealing effect and can meet high-level waterproof requirements such as IPX7 and IPX8.

[0075] Combined Figure 6 As shown, in some embodiments, the metal part 13 includes an antenna metal body 131 and a middle plate metal body 132.

[0076] The antenna metal body 131 is located within the frame area of the device body 1, the middle plate metal body 132 is located within the middle plate area of the device body 1, and a connecting material cutting groove 16 is provided between the antenna metal body 131 and the middle plate metal body 132, and liquid glue is poured into the connecting material cutting groove 16.

[0077] In the electronic device of this embodiment, the antenna metal body 131 can be buried within the frame area of the device body 1 for wireless communication of the electronic device. However, during the production process of the device body 1, the antenna metal body 131 needs to be connected to the middle plate metal body 132 as a whole by using a connecting material structure for fixation, and then injection-molded and combined with the plastic part 12. After injection molding, the connecting material structure needs to be cut. The connecting material cutting groove 16 formed by cutting the connecting material usually has a risk of water seepage and will affect the waterproof and sealing effect of the back glue structure 31. Therefore, liquid glue is poured into the connecting material cutting groove 16, and at least part of the condensed liquid glue is adhesively connected to the back glue structure 31.

[0078] In some embodiments, the device body 1 includes a front shell or a middle frame, and the installation groove 11 is located on the front shell or the middle frame; thereby, the connection between the device body 1 and the screen module 2 can be realized.

[0079] Combined Figure 1 、 Figure 5 and Figure 6 As shown, in some embodiments, the screen module 2 includes a cover plate 21 and a display body 22. The display body 22 is located on the side of the cover plate 21 facing the installation groove 11. The back glue structure 31 is located between the bottom surface of the installation groove 11 and the display body 22, and the dispensing structure 32 is located between the step portion 112 and the cover plate 21.

[0080] Through the above arrangement, the cover plate 21 at the top edge 201 and the two side edges 202 of the screen module 2 do not need to reserve a dispensing width, and have a smaller border or black edge. The bottom edge 203 of the screen module 2 is combined with the step portion 112, which can ensure the normal routing of the display cable of the screen module 2.

[0081] Among them, the display body 22 includes a display screen.

[0082] In some possible implementation manners, the display screen is any one of a plasma display panel (PDP), a vacuum fluorescent display (VFD), a field emission display (FED), a light emitting diode (LED) display, an organic light-emitting diode (OLED) display, a liquid crystal display (LCD), a micro-electro-mechanical system (DMD) display, and an electronic ink (EL) display, etc.

[0083] In some other possible implementation manners, the structure of the display screen has various forms.

[0084] Exemplarily, the display screen includes a substrate, an organic light-emitting diode (OLED) layer, and a thin film encapsulation (TFE) layer that are sequentially stacked.

[0085] Another example is that the display screen includes a substrate, a thin film transistor (TFT) layer, an organic light-emitting diode (OLED) layer, a thin film encapsulation (TFE) layer, a touch layer, and a polarizer, which are sequentially stacked.

[0086] It should be noted that the layer structure of the display screen is not limited to the two structural forms listed above. When the requirements of foldable display are met, the display screen can also adopt other layer structural forms.

[0087] In some possible implementation manners, the electronic device may include a radio frequency (RF) circuit, a memory including one or more computer-readable storage media, an input unit, a display unit, a sensor, an audio circuit, a Wi-Fi module, a processor including one or more processing cores, and a power supply, and other components.

[0088] The terminal device may further include a camera, a Bluetooth module, etc., which will not be elaborated herein.

[0089] In the description of this specification, the description with reference to the terms "certain embodiments", "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiments or examples are included in at least one embodiment or example of the present invention.

[0090] The above are only the embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An electronic device, characterized in that: The electronic device comprises: a device body (1), a screen module (2) and a connection structure (3); The device body (1) comprises a mounting groove (11), and the screen module (2) is located in the mounting groove (11); The connection structure (3) comprises a back glue structure (31), a glue dispensing structure (32) and a connection structure (33); The adhesive backing structure (31) is located in the mounting groove (11) and is used to bond at least one edge of the screen module (2) to the bottom surface of the mounting groove (11); A step portion (112) is provided on the side wall of the mounting groove (11) corresponding to the other edge of the screen module (2), and the glue dispensing structure (32) is located on the step portion (112) and is used to adhere the bottom edge (203) of the screen module (2) to the step portion (112); The connection structure (33) is located at both ends of the step portion (112), and the connection structure (33) connects the glue-dispensing structure (32) and the adhesive-back structure (31) respectively, so that the adhesive-back structure (31) and the glue-dispensing structure (32) are connected to form a closed ring.

2. The electronic device according to claim 1, characterized in that: The adhesive backing structure (31) corresponds to the top edge (201) and two side edges (202) of the screen module (2), and the adhesive dot structure (32) corresponds to the bottom edge (203) of the screen module (2); The connection structure (33) corresponds to two ends of the bottom edge (203) of the screen module (2).

3. The electronic device according to claim 1, characterized in that: The installation groove (11) is provided with at least two glue injection holes (111), the glue injection holes (111) are close to the location of the step portion (112), one end of the glue injection hole (111) is located on the step portion (112), and the other end of the glue injection hole (111) is located on the bottom surface of the installation groove (11); The glue injection hole (111) is used for injecting liquid glue, and the connection structure (33) is formed by condensation of the liquid glue in the glue injection hole (111).

4. The electronic device according to any one of claims 1 to 3, characterized in that: The device body (1) comprises a plastic part (12) and a metal part (13) which are combined by injection molding; at least one combining gap (14) is provided between the plastic part (12) and the metal part (13); When the adhesive backing structure (31) has the bonding gap (14) in the bonding area on the bottom surface of the mounting groove (11), the distance L1 between the bonding gap (14) and the outer edge (3101) of the adhesive backing structure (31) is greater than or equal to the first target value.

5. The electronic device according to claim 4, characterized in that: The adhesive region of the adhesive backing structure (31) on the bottom surface of the mounting groove (11) is at least partially located on the plastic portion (12).

6. The electronic device according to claim 5, characterized in that: An anti-seepage groove (15) is provided at the location of the bonding gap (14), and liquid glue is poured into the anti-seepage groove (15). The liquid glue in the anti-seepage groove (15) is bonded and connected to the back glue structure (31) after solidification.

7. The electronic device according to claim 5, characterized in that: The outer edge (3101) of the adhesive backing structure (31) is located on the plastic part (12), and the width L2 of the bonding area between the adhesive backing structure (31) and the plastic part (12) is greater than or equal to a second target value.

8. The electronic device according to claim 7, characterized in that: The first target value and the second target value are both greater than or equal to 1.5 mm.

9. The electronic device according to claim 4, characterized in that: The metal part (13) comprises an antenna metal body (131) and a middle plate metal body (132); The antenna metal body (131) is located in the frame area of ​​the device body (1), and the middle plate metal body (132) is located in the middle plate area of ​​the device body (1). A connecting material cutting groove (16) is provided between the antenna metal body (131) and the middle plate metal body (132), and liquid glue is poured into the connecting material cutting groove (16).

10. The electronic device according to claim 1, characterized in that: The device body (1) comprises a front shell or a middle frame, and the mounting groove (11) is located on the front shell or the middle frame; and / or, The screen module (2) comprises a cover plate (21) and a display body (22), wherein the display body (22) is located on a side of the cover plate (21) facing the mounting groove (11), the adhesive backing structure (31) is located between the bottom surface of the mounting groove (11) and the display body (22), and the adhesive dot structure (32) is located between the step portion (112) and the cover plate (21).

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