Terminal device

Abstract

The terminal device includes a structural component, a flexible circuit board, a reinforcing plate, foam adhesive, a filler, and an adhesive layer. The structural component has a receiving groove; the flexible circuit board includes a central section located within the receiving groove; the reinforcing plate connects to the central section; the foam adhesive connects the reinforcing plate and the structural component; the filler is located within the receiving groove and on the side of the central section opposite to the foam adhesive; the adhesive layer bonds the filler and the structural component. The use of foam adhesive and the adhesive layer together provides waterproofing, reduces assembly costs, lowers the risk of flexible circuit board breakage, and improves the reusability yield of the flexible circuit board.

Description

Technical Field

[0001] This application relates to the field of terminal technology, and in particular to a terminal device. Background Technology

[0002] Buttons are an important component of terminal devices, enabling their operation. However, there are gaps between the buttons and the structural components of the terminal device, requiring the area containing the buttons to be waterproofed to prevent external moisture from entering the device. Existing waterproofing processes are complex. Summary of the Invention

[0003] Therefore, it is necessary to provide a terminal device with a simple waterproofing process.

[0004] A terminal device includes a structural component, a flexible circuit board, a reinforcing plate, foam adhesive, a filler, and an adhesive layer. The structural component has a receiving groove; the flexible circuit board includes a middle portion located in the receiving groove; the reinforcing plate connects the middle portion; the foam adhesive connects the reinforcing plate and the structural component; the filler is located in the receiving groove and on the side of the middle portion opposite to the foam adhesive; the adhesive layer bonds the filler and the structural component.

[0005] The aforementioned structure utilizes both foam adhesive and bonding layers for waterproofing. During the assembly of the terminal device, the steps of dispensing and UV curing can be reduced, which helps to lower assembly costs. The flexible circuit board is not repeatedly flipped during assembly, reducing the risk of breakage. The foam adhesive does not increase the thickness of the waterproof area, ensuring the flatness of the back cover. Using foam adhesive for waterproofing also facilitates the removal of the flexible circuit board from the structural components, improving the reusability of the flexible circuit board.

[0006] In one possible embodiment of this application, the structural component is further provided with a limiting groove, which is connected to the receiving groove, and the reinforcing plate and the foam adhesive are both located in the limiting groove.

[0007] In the above structure, the reinforcing plate and foam adhesive are both located in the limiting groove, which helps to save space in the terminal device. In addition, during the assembly of the terminal device, the limiting groove can also play a limiting role to prevent the reinforcing plate and foam adhesive from shifting relative to the inner side during the assembly process.

[0008] In one possible embodiment of this application, the flexible circuit board further includes a first conductive portion and a first connecting portion, the first connecting portion connecting the first conductive portion and the intermediate portion, the first conductive portion and the first connecting portion being located in a receiving groove; the filler includes a through groove, the through groove being formed by a recess in the surface of the filler near the structural member, the first connecting portion passing through the through groove, the first conductive portion and the intermediate portion being located on opposite sides of the filler.

[0009] In the above structure, the first connecting part of the flexible circuit board passes through the through groove, which facilitates the flexible circuit board to achieve its respective electrical connection function on both sides opposite to the first connecting part.

[0010] In one possible embodiment of this application, the filler further includes a first material portion and a second material portion, the first material portion covering at least a portion of the second material portion, the strength of the second material portion being greater than the strength of the first material portion, and the projection of the second material portion and the projection of the through groove at least partially coinciding along the direction of the through groove recess.

[0011] In the above structure, a second material with greater strength is provided in the area corresponding to the through groove, which helps to improve the strength of the filler in the area where the through groove is located, thereby improving the overall strength of the filler.

[0012] In one possible embodiment of this application, the filler further includes a main body and a protrusion, the protrusion surrounding the main body and located on the side of the main body opposite to the through groove; an adhesive layer bonds the main body, the protrusion and the structural member.

[0013] In the above structure, during the dispensing process, the protruding part is used to block the glue and prevent the glue from flowing into the receiving groove to bond the flexible circuit board.

[0014] In one possible embodiment of this application, the structural member further includes a slot, which is connected to a receiving groove. The main body is located in the receiving groove, and the portion of the protrusion away from the end of the main body is received in the slot.

[0015] The above structure, which is equivalent to the projection of the frame covering the protruding part, helps to further prevent glue from flowing into the receiving groove to bond the flexible circuit board.

[0016] In one possible embodiment of this application, the terminal device further includes a button, the structural member has a through hole, the button passes through the through hole and extends into the receiving groove, and the button is electrically connected to the first conductive part.

[0017] The above structure represents a specific application scenario for waterproof structures.

[0018] In one possible embodiment of this application, the structural member includes an outer portion and an inner portion, which surround and form a receiving groove; the flexible circuit board further includes a second connecting portion and a second conductive portion, the second connecting portion connecting the middle portion and the second conductive portion, the second connecting portion passing through the inner portion, and the second conductive portion located on the side of the inner portion away from the receiving groove.

[0019] In the above structure, the flexible circuit board passes through the inner part, and the first and second conductive parts of the flexible circuit board are located on opposite sides of the inner part, which are used to realize the electrical connection between the button and the inside of the terminal device.

[0020] In one possible embodiment of this application, the terminal device further includes an adhesive backing and a back cover, wherein the adhesive backing is bonded to the outer portion and the back cover.

[0021] The above structure uses adhesive to bond the outer side and the back cover so that the back cover and structural components can connect to the internal components of the terminal device.

[0022] In one possible embodiment of this application, the structural component is a middle frame.

[0023] The above structure allows the terminal device to be a mobile phone, representing a specific application scenario for the terminal device. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of a terminal device provided in some embodiments of this application.

[0025] Figure 2 for Figure 1 The exploded view of the terminal device shown.

[0026] Figure 3 for Figure 1 The diagram shows the structure of the area where the buttons are located on the terminal device.

[0027] Figure 4 for Figure 3 Exploded view of the area shown.

[0028] Figure 5 for Figure 3 The diagram shows a top view of the filler located outside the receiving groove.

[0029] Figure 6 In order to be in Figure 3 The diagram shown is a top view showing two applications of adhesive around the filler.

[0030] Figure 7 This is a schematic diagram of the structure of a terminal device provided in some other embodiments of this application.

[0031] Figure 8 for Figure 7 The exploded view of the terminal device shown.

[0032] Figure 9 for Figure 7 The diagram shows the structure of the area where the buttons are located on the terminal device.

[0033] Figure 10 for Figure 9 Exploded view of the area shown.

[0034] Figure 11 for Figure 9 The diagram shows a cross-sectional view of the terminal device along the AA direction.

[0035] Figure 12 for Figure 9 The diagram shows a top view of the filler located outside the receiving groove.

[0036] Figure 13 In order to be in Figure 9 The diagram shown is a top view of the filling material being coated with adhesive once.

[0037] Explanation of main component symbols

[0038] Terminal device 100、100a Mid-frame 10 bearing plate 11 frame 12 outer side 121 inner side 122 Reception slot 124 Limiting groove 125 Card slot 126 Through hole 127 Back cover 14 Adhesive backing 15 button 16 motherboard 17 Battery 18 Lens Module 19 Filler 20 Through slot 21 First Material Department 22 Second Material Department 23 Main body 24 Protrusion 25 Flexible circuit board 30 First Conductor Section 31 First connecting part 32 Middle section 33 Second connecting part 34 Second Conductor Section 35 foam adhesive 40 Reinforcing plate 41 area M, N Detailed Implementation

[0039] To better understand the above-mentioned objectives, features, and advantages of this application, the application will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. Many specific details are set forth in the following description to provide a thorough understanding of this application; the described embodiments are merely some, not all, of the embodiments described in this application.

[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The term "and / or" as used herein includes all and any combination of one or more of the associated listed items.

[0041] In the various embodiments of this application, for ease of description and not limitation, the term "connection" used in the patent application specification and claims is not limited to physical or mechanical connections, whether direct or indirect. Terms such as "upper," "lower," "above," "below," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship also changes accordingly.

[0042] Please see Figure 1 , Figure 1 This is a schematic diagram of the structure of a terminal device 100 provided in some embodiments of this application. The terminal device 100 may include, but is not limited to, products such as mobile phones, tablets, laptops, cameras, and wearable devices, in which the area around the button 16 needs to be waterproofed. Wearable devices include, but are not limited to, smart bracelets, smartwatches, and smart glasses.

[0043] In this embodiment, the terminal device 100 is a flat-screen mobile phone, and the waterproof area is specifically the area around the button 16. The mobile phone is roughly rectangular in shape. For ease of explanation, an XYZ coordinate system is established, defining the width direction of the mobile phone as the X-axis, the length direction as the Y-axis, and the thickness direction as the Z-axis. It is understood that the coordinate system of the terminal device 100 can be flexibly set according to actual needs, and no specific limitation is made here.

[0044] In some other embodiments, the mobile phone may also be a foldable screen phone; in some other embodiments, the terminal device 100 may also be square, circular, oval, or irregular in shape, etc., without specific limitations.

[0045] Please see Figure 2 , Figure 2 for Figure 1 The diagram shows an exploded view of the terminal device 100. The terminal device 100 may include a mid-frame 10, a back cover 14, a screen (not shown), adhesive 15, buttons 16, filler 20, and a flexible circuit board 30. The terminal device 100 may also include components such as a motherboard 17, a battery 18, and a lens module 19. Figure 2 The illustrations show only a portion of the components of the terminal device 100, not all of them. In this embodiment, the structural component is the middle frame 10. In other embodiments, the specific components of the terminal device 100 may be changed according to the specific name and relative position of the terminal device 100, and the specific names of the structural components may also be changed accordingly.

[0046] The screen and back cover 14 are located on opposite sides of the mid-frame 10. The screen is used to display images, videos, etc. The screen can be a rigid display or a flexible display; it can be a flat screen or a curved screen. The screen can be an organic light-emitting diode (OLED) display, an active-matrix organic light-emitting diode (AMOLED) display, a mini organic light-emitting diode (MLED) display, a micro organic light-emitting diode (MOLED) display, a quantum dot light-emitting diode (QLED) display, a liquid crystal display (LCD), etc.

[0047] The middle frame 10 and the back cover 14 are used to protect the components inside the terminal device 100. The middle frame 10 may include a support plate 11 and a frame 12. The frame 12 surrounds the support plate 11 and the frame 12 and the support plate 11 are fixed to each other. In this embodiment, the frame 12 and the support plate 11 are integrally formed. The frame 12 is located between the support plate 11 and the back cover 14. The adhesive 15 is ring-shaped and is used to bond the back cover 14 and the frame 12. The middle frame 10, the back cover 14 and the adhesive 15 together form a relatively sealed accommodating space (not shown in the figure). The accommodating space can be used to accommodate components such as the flexible circuit board 30, the motherboard 17, the battery 18, and the lens module 19.

[0048] Users can apply pressure to button 16 and generate corresponding signals. The flexible circuit board 30 transmits these signals to the internal functional components of the control terminal device 100. In this embodiment, button 16 is a fingerprint button, which unlocks the terminal device 100 by recognizing the user's fingerprint. In other embodiments, button 16 can also be a volume button, which adjusts the volume of the terminal device 100. Button 16 can also be a power button, which allows the terminal device 100 to be powered on, powered off, locked, or woken up. Button 16 can be located on the side or top edge of the frame 12 as a side button or top button. In this embodiment, button 16 is located on the side of the frame 12 along the Y-axis. In other embodiments, the number of button 16 components can be one or more, and the specific number and installation position can be adjusted according to the actual application scenario.

[0049] Please see Figure 3 and Figure 4 , Figure 3 for Figure 1 The diagram shows the structure of the area where button 16 is located on the terminal device 100. Figure 4 for Figure 3 The exploded view of the area shown, in which, Figure 3 The back cover 14 and adhesive backing 15 have been omitted.

[0050] The frame 12 includes an outer portion 121 and an inner portion 122, which are arranged along the X-axis. The outer portion 121 is located outside the terminal device 100 and extends along the Y-axis; the inner portion 122 is located inside the terminal device 100 relative to the outer portion 121, and its two ends along the Y-axis are connected to the outer portion 121. Adhesive 15 bonds the outer portion 121 and the back cover 14.

[0051] An outer portion 121 is provided with a through hole 127, which penetrates the outer portion 121 along the X-axis direction; the outer portion 121 and the inner portion 122 form a receiving groove 124, which is connected to the through hole 127, and the button 16 passes through the through hole 127 and extends into the receiving groove 124.

[0052] The flexible circuit board 30 includes a first conductive portion 31, a first connecting portion 32, a middle portion 33, a second connecting portion 34, and a second conductive portion 35 connected in sequence. The first conductive portion 31, the first connecting portion 32, and the middle portion 33 are located in a receiving groove 124. The first conductive portion 31 is located in the receiving groove 124 and is close to the outer portion 121. The first conductive portion 31 is used for electrical connection with the button 16. The middle portion 33 is close to the inner portion 122. The first connecting portion 32 connects the first conductive portion 31 and the middle portion 33. The first connecting portion 32 is bent relative to the first conductive portion 31 and the middle portion 33. The second connecting portion 34 passes through the inner portion 122 approximately along the X-axis direction. The second conductive portion 35 is located on the side of the inner portion 122 away from the receiving groove 124. The second conductive portion 35 can be used for electrical connection with the motherboard 17.

[0053] The filler 20 is located in the receiving groove 124. The filler 20 includes a through groove 21, which is formed by a recess in the surface of the filler 20 near the frame 12 toward the back cover 14. The first connecting portion 32 of the flexible circuit board 30 passes through the through groove 21, and the first conductive portion 31 and the intermediate portion 33 are located on opposite sides of the filler 20.

[0054] In some embodiments, waterproofing is applied to areas requiring waterproofing using a double-application method. The terminal device 100 also includes a first adhesive layer (not shown) and a second adhesive layer (not shown). The first adhesive layer bonds the filler 20 and the frame 12, and the second adhesive layer bonds the flexible circuit board 30 and the frame 12. Both the first and second adhesive layers are formed by dispensing and curing adhesive.

[0055] Please combine Figure 5 and Figure 6 Specifically, firstly, the first conductive portion 31, the first connecting portion 32, and the middle portion 33 of the flexible circuit board 30 are placed in the receiving groove 124, and the second connecting portion 34 of the flexible circuit board 30 is passed through the inner side portion 122; the filler 20 is placed in the receiving groove 124; then, between the filler 20 and the frame 12 (e.g. Figure 6 In area M), the first application of adhesive is performed, and the adhesive is cured with UV (Ultraviolet) to form a first adhesive layer, which bonds the filler 20 and the frame 12; then the second conductive part 35 is flipped relative to the filler 20 toward the outer part 121, and on the surface of the inner part 122 (such as... Figure 6 After applying adhesive to region N in the middle for the second time, the second conductive part 35 is flipped over again so that the adhesive is located between the inner part 122, the second connecting part 34 and the middle part 33, and the adhesive is UV cured to form a second adhesive layer, which bonds the inner part 122, the second connecting part 34 and the middle part 33.

[0056] In this embodiment, waterproofing is achieved through a two-stage adhesive application process, requiring two adhesive application and curing steps. This two-stage application process necessitates multiple flipping of the flexible circuit board 30, which carries the risk of breakage. Furthermore, the second adhesive layer formed after the second application has a certain thickness, increasing the thickness of the connection area between the second connecting portion 34 and the middle portion 33. This can easily cause the back cover 14 to float after subsequent installation. The second adhesive layer formed after adhesive application in the waterproof area bonds the flexible circuit board 30 and the frame 12, making it difficult to separate the flexible circuit board 30 and the frame 12, thus reducing the reusability yield of the flexible circuit board 30.

[0057] Please see Figure 7 and Figure 8 , Figure 7 This is a schematic diagram of the structure of the terminal device 100a provided in some other embodiments of this application. Figure 8 for Figure 7 The exploded view of the terminal device 100a is shown. The terminal device 100a uses a combination of foam adhesive 40 and single-application, instead of the above-mentioned waterproofing method that uses double-application.

[0058] Specifically, in this embodiment, the terminal device 100a includes a mid-frame 10, a back cover 14, a screen (not shown), an adhesive backing 15, a button 16, a filler 20, and a flexible circuit board 30. The terminal device 100a may also include components such as a motherboard 17, a battery 18, and a lens module 19. The structure and interaction of the above components can be referred to the previous embodiment.

[0059] The terminal device 100a also includes foam adhesive 40 and an adhesive layer (not shown), which together provide waterproofing. The terminal device 100a may also include a reinforcing plate 41 connected to the foam adhesive 40. The reinforcing plate 41 serves to balance the forces acting on the foam adhesive 40, ensuring a uniform distribution of the force. The reinforcing plate 41 is sheet-shaped, and its shape matches that of the foam adhesive 40. The reinforcing plate 41 has greater strength than the foam adhesive 40. The material of the reinforcing plate 41 can be metal, metal alloy, or ceramic, etc. In this embodiment, the material of the reinforcing plate 41 is steel.

[0060] Please see Figure 9 , Figure 10 and Figure 11 , Figure 8 for Figure 7 The diagram shows the structure of the area where button 16 is located in the terminal device 100a. Figure 10 for Figure 9 Exploded view of the area shown. Figure 11 for Figure 9 The schematic diagram of a cross-section of the terminal device 100a along the AA direction is shown, wherein, Figure 9 The back cover 14 and adhesive backing 15 have been omitted.

[0061] Foam adhesive 40 and reinforcing plate 41 are located between the middle portion 33 and the inner portion 122. Reinforcing plate 41 is located between the middle portion 33 and foam adhesive 40, and foam adhesive 40 is located between reinforcing plate 41 and inner portion 122. Filler 20 is located on the side of the middle portion 33 opposite to reinforcing plate 41. Foam adhesive 40 is compressible, meaning it can deform under external force; it also has adhesive properties, allowing it to bond reinforcing plate 41 and / or inner portion 122. In this embodiment, foam adhesive 40 bonds to inner portion 122. The adhesive layer is formed by dispensing and curing, bonding filler 20 and frame 12.

[0062] Please combine Figure 12 and Figure 13 The steps of assembling the terminal device 100a may include: firstly, bonding and fixing the foam adhesive 40 to the reinforcing plate 41 of the middle part 33; placing the first conductive part 31, the first connecting part 32, the middle part 33, the reinforcing plate 41, and the foam adhesive 40 in the receiving groove 124, with the foam adhesive 40 and the surface of the inner part 122 connected. Then, placing the filler 20 in the receiving groove 124, with the first connecting part 32 passing through the through groove 21. During the placement of the filler 20, the filler 20 compresses the middle part 33, and the force is transmitted to the reinforcing plate 41 and the foam adhesive 40. The foam adhesive 40 is compressed under external force, increasing its waterproof performance. Next, applying adhesive between the filler 20 and the frame 12, with the adhesive area surrounding the filler 20 and excluding the area where the middle part 33 is located (e.g., ...). Figure 13 In area M), the adhesive is UV cured to form an adhesive layer, which bonds the filler 20 and the frame 12. The adhesive layer and the foam adhesive 40 together form a ring-shaped waterproof area to achieve a waterproof effect.

[0063] Compared to the previous embodiment, the assembly process in this embodiment can reduce one dispensing and UV curing step, which helps to reduce assembly costs. In this embodiment, the flexible circuit board 30 is not flipped multiple times during the assembly process, reducing the risk of breakage of the flexible circuit board 30. The foam adhesive 40 is located between the middle part 33 and the inner part 122, without increasing the thickness of the waterproof area along the Z-axis, which helps to ensure the flatness of the back cover 14. Using foam adhesive 40 for waterproofing makes it easy to remove the flexible circuit board 30 from the frame 12, which helps to improve the reusability of the flexible circuit board 30.

[0064] Please refer to it again. Figure 10 or Figure 11In some embodiments, a limiting groove 125 is provided on the inner side portion 122. The limiting groove 125 is connected to the receiving groove 124. The limiting groove 125 is formed by a recess in the surface of the inner side portion 122 in a direction away from the outer side portion 121. The limiting groove 125 is used to receive the reinforcing plate 41 and the foam adhesive 40. The reinforcing plate 41 and the foam adhesive 40 are both located in the limiting groove 125, which helps to save space in the X-axis direction of the terminal device 100a. In addition, during the assembly of the terminal device 100a, the limiting groove 125 can also play a limiting role to prevent the reinforcing plate 41 and the foam adhesive 40 from being displaced relative to the inner side portion 122 during the assembly process.

[0065] In terms of materials, the filler 20 also includes a first material portion 22 and a second material portion 23. The first material portion 22 covers at least a portion of the second material portion 23, and the strength of the second material portion 23 is greater than that of the first material portion 22. The first material portion 22 can be made of plastic, etc., and the second material portion 23 can be made of metal, alloy, ceramic, etc.

[0066] Along the direction of the recess in the through groove 21, the projection of the second material part 23 and the projection of the through groove 21 at least partially overlap. The through groove 21 provided in the filler 20 is equivalent to a reduction in the thickness of the area of ​​the filler 20 where the through groove 21 is provided. The area corresponding to the through groove 21 is provided with a second material part 23 with greater strength, which helps to improve the strength of the filler 20 in the area where the through groove 21 is located, thereby improving the overall strength of the filler 20.

[0067] Structurally, the filler 20 also includes a main body 24 and a protrusion 25. The protrusion 25 surrounds the main body 24 and is located on the side of the main body 24 opposite to the through groove 21. During the dispensing process, the protrusion 25 blocks the adhesive, preventing it from flowing into the receiving groove 124 to bond the flexible circuit board 30, thus making it difficult to disassemble the flexible circuit board 30 from the frame 12. After the adhesive cures, the resulting adhesive layer bonds the main body 24, the protrusion 25, and the frame 12. That is, along the Z-axis direction, the adhesive layer and the flexible circuit board 30 are located on opposite sides of the protrusion 25.

[0068] Please refer to it again. Figure 11 The frame 12 also includes a slot 126, which is connected to a receiving groove 124. The main body 24 is located in the receiving groove 124, and the portion of the protrusion 25 facing away from the main body 24 is received in the slot 126. This means that, along the Z-axis, the projection of the frame 12 covers a portion of the protrusion 25, which helps to further prevent adhesive from flowing into the receiving groove 124 during the dispensing process to bond the flexible circuit board 30.

[0069] The above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to the above preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions to the technical solutions of this application should not depart from the spirit and scope of the technical solutions of this application.

Claims

1. A terminal device, characterized in that, include: Structural components are provided with receiving slots; A flexible circuit board, including a middle portion located in the receiving groove; A reinforcing plate connects to the middle section; Foam adhesive is used to connect the reinforcing plate and the structural component; The filler is located in the receiving groove and on the side of the middle portion opposite to the foam adhesive; as well as An adhesive layer that bonds the filler and the structural member.

2. The terminal device according to claim 1, characterized in that, The structural component also has a limiting groove, which is connected to the receiving groove, and the reinforcing plate and the foam adhesive are both located in the limiting groove.

3. The terminal device according to claim 1, characterized in that, The flexible circuit board further includes a first conductive portion and a first connecting portion, the first connecting portion connecting the first conductive portion and the intermediate portion, the first conductive portion and the first connecting portion being located in the receiving groove; the filler includes a through groove, the through groove being formed by a recess on the surface of the filler near the structural member, the first connecting portion passing through the through groove, the first conductive portion and the intermediate portion being located on opposite sides of the filler.

4. The terminal device according to claim 3, characterized in that, The filler also includes a first material portion and a second material portion, the first material portion covering at least a portion of the second material portion, the strength of the second material portion being greater than the strength of the first material portion, and the projection of the second material portion and the projection of the through groove at least partially overlapping along the direction of the through groove recess.

5. The terminal device according to claim 3, characterized in that, The filler also includes a main body and a protrusion, the protrusion surrounding the main body and located on the side of the main body opposite to the through groove; the adhesive layer bonds the main body, the protrusion and the structural member.

6. The terminal device according to claim 5, characterized in that, The structural component also includes a slot, which is connected to the receiving groove. The main body is located in the receiving groove, and the portion of the protrusion away from the end of the main body is received in the slot.

7. The terminal device according to any one of claims 3-6, characterized in that, The terminal device also includes a button. The structural component has a through hole, the button passes through the through hole and extends into the receiving groove, and the button is electrically connected to the first conductive part.

8. The terminal device according to any one of claims 1-7, characterized in that, The structural component includes an outer portion and an inner portion, which together form the receiving groove; the flexible circuit board further includes a second connecting portion and a second conductive portion, the second connecting portion connecting the middle portion and the second conductive portion, the second connecting portion passing through the inner portion, and the second conductive portion located on the side of the inner portion opposite to the receiving groove.

9. The terminal device according to claim 8, characterized in that, The terminal device also includes an adhesive backing and a back cover, wherein the adhesive backing bonds the outer portion and the back cover.

10. The terminal device according to any one of claims 1-9, characterized in that, The structural component is the middle frame.

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