A display screen

Abstract

The application discloses a display screen, comprising: a display assembly having a display side and a non-display side arranged oppositely; a middle frame, the edge of which is bonded with the edge of the non-display side; a back shell having a matching groove, the middle part of the middle frame being connected in the matching groove so that the middle frame and the back shell are aligned, and the edge of the matching groove wrapping the narrow edge between the display side and the non-display side of the display assembly. The application can solve the problems of light leakage of mass-produced display screen products, uneven bonding gap of the display screen and inconvenient maintenance of the display screen, and can provide good user experience.

Description

Technical Field

[0001] This application relates to the field of display device technology, and more particularly to a display screen. Background Technology

[0002] In-vehicle displays are generally 10 inches or larger, allowing for clearer display of more content. Currently, the market has increasingly higher requirements for the uniformity of display gaps and reliability of display products. However, the traditional method of assembling display products involves attaching the display to the front frame. Once the front frame deforms, the display will leak light, affecting the user experience. In addition, this assembly method also leads to problems such as uneven bonding gaps and difficulty in maintenance. Utility Model Content

[0003] This application aims to solve one of the common technical problems in the prior art.

[0004] This application provides a display screen that can solve problems such as light leakage, uneven bonding gaps, and inconvenient maintenance of mass-produced display screens, thereby providing users with a better user experience.

[0005] This application provides a display screen, including:

[0006] The display component has a display side and a non-display side that are set relative to each other;

[0007] The middle frame, whose edges are bonded to the edges of the non-display side;

[0008] The rear shell has a mating groove, and the middle part of the middle frame is connected to the mating groove so that the middle frame and the rear shell are aligned, and the edge of the mating groove wraps around the narrow edge between the display side and the non-display side of the display component.

[0009] In some embodiments, the middle frame has a central portion and an outer extension that connects to the edge of the central portion and extends outward;

[0010] The extension direction of the epitaxial portion is parallel to the surface extension direction of the non-display side, and the edges of the epitaxial portion and the non-display side are bonded together.

[0011] The opening of the mating groove is stepped;

[0012] The middle part extends into the interior of the mating groove and is connected and aligned with the mating groove, while the outer extension is located at the opening of the mating groove.

[0013] In some embodiments, at least one first positioning post and a plurality of second positioning posts are provided on the outer side of the central fitting portion and / or the inner side of the mating groove;

[0014] The second positioning post is arranged around the first positioning post;

[0015] The intermediate part and the mating groove are locked and fixed by the first positioning post, the second positioning post and the locking member.

[0016] In some embodiments, the outer side of the central assembly is provided with the first positioning post and the second positioning post;

[0017] Furthermore, the first positioning post is located at the center of the middle part;

[0018] The second positioning post surrounds the first positioning post and is evenly spaced.

[0019] In some embodiments, a plurality of mating portions are provided between the intermediate portion and the extension portion, and at least two of the mating portions are distributed on any side of the intermediate portion. The rear shell is provided with a number of mating holes corresponding to the mating portions, and the mating portions and the mating holes are locked and fixed by locking members.

[0020] In some embodiments, the display component includes a touch component and a display component;

[0021] The touch component defines the display side, the display component is disposed on the side of the touch component opposite to the display side, and the edges of the touch component and the display component form steps;

[0022] The central part encloses the display component, and the outer part is bonded to the edge of the touch component.

[0023] In some embodiments, a buffer waterproof member is provided between the middle frame and the outer extension, the buffer waterproof member being deformable under the drive of the middle frame and the rear shell to fill the gap between them.

[0024] In some embodiments, an adhesive layer is formed on the edge of the epitaxial portion and the non-display side, and the thickness of the adhesive layer is 0.2 mm to 1.5 mm.

[0025] In some embodiments, the middle frame includes a die-cast metal middle frame.

[0026] In some embodiments, a protrusion is formed at the middle position of the rear shell in a direction away from the middle frame, and the protrusion and the corresponding position on the middle frame are reserved for heat dissipation, and a plurality of heat dissipation holes are provided on the protrusion at even intervals.

[0027] As can be seen from the above technical solutions, this application has the following advantages:

[0028] The edge of the display component on the non-display side is bonded to the edge of the mid-frame. The middle part of the mid-frame is connected to the mating groove of the back cover. The edge of the mating groove of the back cover can wrap around the narrow edge between the display side and the non-display side of the display component. Before the glue cures, the relative position between the display component and the mid-frame can be adjusted to ensure that the edge of the non-display side of the display component is aligned with the edge of the mid-frame or that the lengths of the offsets of each edge are consistent. After the glue cures, the mid-frame can be assembled onto the back cover, so that the display component is automatically aligned with the back cover. Furthermore, the uniformity of the gap between the edge of the display component and the edge of the mid-frame can be adjusted by controlling the amount of glue to prevent the display component from tilting relative to the back cover. The edge of the mid-frame will not wrap around the edge of the display component, which facilitates the separation of the display component and the mid-frame from the bonding position for maintenance of the display component. After the glue cures, the edge of the mid-frame and the edge of the display component are tightly connected, preventing light leakage. The back cover also provides support for the mid-frame, suppressing its deformation. In addition, the back cover can wrap around the narrow edge between the display side and the non-display side of the display component to further prevent light leakage. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings.

[0030] Figure 1 This is a schematic diagram of the structure of a display screen according to an embodiment of this application;

[0031] Figure 2 for Figure 1 A schematic diagram showing the view from the back of the display screen;

[0032] Figure 3 for Figure 1 The side cross-sectional view of the display screen shown;

[0033] Figure 4 for Figure 3 Enlarged view of region A in the middle;

[0034] Figure 5 for Figure 1 An exploded view of the components of the display screen shown;

[0035] Figure 6 for Figure 1 An exploded view of the components of the display screen from another perspective;

[0036] Figure 7 for Figure 1 The diagram shows the structure of the middle frame.

[0037] The meanings of the reference numerals in the attached figures are as follows:

[0038] 1. Display component; 11. Display side; 12. Non-display side; 13. Touch component; 14. Display component; 2. Mid-frame; 21. Mid-mount part; 22. Extension part; 23. Mating part; 3. Back cover; 31. Mating groove; 32. Opening; 33. Mating hole; 34. Protrusion; 35. Heat dissipation hole; 4. First positioning post; 5. Second positioning post; 6. Locking component; 7. Buffer and waterproof component; 8. Adhesive layer; 9. Heat dissipation space. Detailed Implementation

[0039] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0040] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0041] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0042] like Figures 1-7 As shown in the illustration, this application provides a display screen including a display component 1, a middle frame 2, and a back cover 3; the display component 1 has a display side 11 and a non-display side 12 disposed opposite to each other, and the edges of the middle frame 2 and the non-display side 12 are bonded together; the back cover 3 has a mating groove 31, the middle part of the middle frame 2 is connected to the mating groove 31 so that the middle frame 2 and the back cover 3 are aligned, and the edge of the mating groove 31 wraps around the narrow edge between the display side 11 and the non-display side 12 of the display component 1, and the display side 11 is exposed from the opening 32 of the mating groove 31.

[0043] Based on the above technical solution, the edge of the non-display side 12 of the display component 1 is bonded to the edge of the middle frame 2. The middle part of the middle frame 2 is connected to the mating groove 31 of the back shell 3. The edge of the mating groove 31 of the back shell 3 can wrap around the narrow edge between the display side 11 and the non-display side 12 of the display component 1. Before the glue solidifies, workers can use tools to adjust the relative position between the display component 1 and the middle frame 2 to ensure that the edge of the non-display side 12 of the display component 1 and the edge of the middle frame 2 are aligned or that the lengths of the staggered edges are consistent. After the glue solidifies, the middle frame 2 can be assembled onto the back shell 3, thus automatically aligning the display component 1 with the back shell 3. By controlling the amount of adhesive, the uniformity of the gap between the edge of the display component 1 and the edge of the middle frame 2 can be adjusted, preventing the display component 1 from tilting relative to the back cover 3. The edge of the middle frame 2 will not wrap around the edge of the display component 1, which facilitates the separation of the display component 1 and the middle frame 2 from the adhesive position for maintenance of the display component 1. After the adhesive solidifies, the edge of the middle frame 2 and the edge of the display component 1 can be tightly connected without light leakage. The back cover 3 also provides support for the middle frame 2, suppressing its deformation. Furthermore, the back cover 3 can wrap around the narrow edge between the display side 11 and the non-display side 12 of the display component 1 to further prevent light leakage.

[0044] Therefore, the display screen of this application will not have light leakage problems, the gap between the display component 1 and the middle frame 2 is uniform and meets the manufacturing requirements, the display side 11 of the display component 1 has good flatness relative to the back shell 3, the image display quality is better, and it can bring users a good user experience.

[0045] The display component 1 and the middle frame 2 are in a surface-to-surface fit. The edge of the display component 1 is not covered by the middle frame 2. In fact, the edge of the middle frame 2 does not extend beyond the edge of the non-display side 12 of the display component 1. This can be understood as follows: on the projection surface parallel to the display side 11, the projection pattern formed by the middle frame 2 is covered by the projection pattern formed by the display component 1. Therefore, when the middle frame 2 and the back shell 3 are assembled and the edge of the back shell 3 covers the narrow edge of the display component 1, the gap between the back shell 3 and the edge of the display side 11 of the display component 1 is very small. In terms of appearance, it will not cause users any awkwardness or aversion.

[0046] During the initial manufacturing process, the surface flatness of the display component 1 is designed accordingly. Without external deformation force, the display component 1 will not easily deform. The edges of the middle frame 2 are bonded to the edges of the display component 1, and the middle part of the middle frame 2 is connected and aligned with the mating groove 31 of the back shell 3. The middle part of the middle frame 2 is supported by the back shell 3. At the same time, the edges of the middle frame 2 are also restricted by the display component 1 and will not easily bend. Thus, the middle frame 2 does not easily deform, and the display component 1 will also not easily deform.

[0047] Furthermore, in order to quickly assemble the middle frame 2 onto the rear shell 3, the shape of the middle frame 2 has been designed in this application.

[0048] In some embodiments, the middle frame 2 has a central fitting portion 21 and an extension portion 22 that connects to the edge of the central fitting portion 21 and extends outward. The extension direction of the extension portion 22 is parallel to the surface extension direction of the non-display side 12, and the edges of the extension portion 22 and the non-display side 12 are bonded together. The opening 32 of the mating groove 31 is stepped. A step is formed between the central fitting portion 21 and the extension portion 22. This step is adapted to the stepped opening 32 of the mating groove 31. Here, the step and the opening 32 of the mating groove 31 form a locking position to facilitate the quick assembly of the middle frame 2 onto the back shell 3. The central fitting portion 21 extends into the interior of the mating groove 31 and is connected and aligned with the mating groove 31. The extension portion 22 is located at the opening 32 of the mating groove 31, and the narrow edge of the display component 1 is also located at the opening 32 of the mating groove 31.

[0049] Correspondingly, the display component 1 includes a touch component 13 and a display component 14. The touch component 13 defines a display side 11, and the display component 14 is disposed on the side of the touch component 13 opposite to the display side 11. A non-display side 12 is formed on the edge of the touch component 13 and the outer side of the display component 14. Steps are formed on the edge of the touch component 13 and the edge of the display component 14. The central portion 21 wraps around the display component 14, and the outer extension portion 22 is bonded to the edge of the touch component 13.

[0050] After the middle frame 2 and the display component 1 are glued together, they form a nearly integrated component that will not easily shift in position.

[0051] As a preferred embodiment, the touch component 13 includes a glass panel.

[0052] At least one first positioning post 4 and a plurality of second positioning posts 5 are provided on the outer side of the middle part 21 and / or the inner side of the mating groove 31. The second positioning posts 5 are arranged around the first positioning post 4. The middle part 21 and the mating groove 31 are locked and fixed by the first positioning post 4, the second positioning post 5 and the locking member 6.

[0053] Both the first positioning post 4 and the second positioning post 5 are provided with holes. The first positioning post 4 and the second positioning post 5 can be provided on the middle frame 2 or the outer shell. Alternatively, some positioning posts can be provided on the middle frame 2 and others on the rear shell 3. If the first positioning post 4 and the second positioning post 5 are provided on the middle frame 2 or the outer shell, the other needs to have a locking hole in the corresponding position. The first positioning post 4 and the second positioning post 5 can be aligned with the corresponding locking hole and locked and fixed with the locking part 6 to fix the middle frame 2 and the rear shell 3. This prevents the middle frame 2 and the rear shell 3 from being misaligned, which would cause defects in the appearance of the display screen product of this application. In some cases, such as transportation, handling, and application on the center console of a vehicle, it can also ensure that the middle frame 2 and the display component 1 and the rear shell 3 are in good position.

[0054] Furthermore, the second positioning post 5 is arranged around the first positioning post 4, which can fix the middle frame 2 and the back shell 3 over a large area. The fastening effect between the two is excellent, forming a stable frame structure. Even if one of them, such as the middle frame 2 or the back shell 3, tends to deform, the other can be stabilized by the first positioning post 4 and the second positioning post 5. The tendency of deformation is also mitigated and dissipated by the first positioning post 4 and the second positioning post 5, ensuring the stability of the display component 1 and preventing it from being affected.

[0055] As a preferred embodiment, the outer side of the middle part 21 is provided with a first positioning post 4 and a second positioning post 5, and the first positioning post 4 is located at the center of the middle part 21, and the second positioning post 5 is arranged around the first positioning post 4 at uniform intervals.

[0056] The first positioning post 4 is located at the center of the middle frame 2. Within a ring-shaped area from this position to the edge of the middle frame 2, multiple second positioning posts 5 are evenly arranged at intervals. This allows a stable and robust frame structure to be formed between the middle frame 2 and the rear shell 3 using a relatively small number of positioning posts. In this way, it is not necessary to design too many positioning posts. For example, if the number of the first positioning post 4 is set to one and the number of the second positioning posts 5 is set to three or four, the manufacturing time of the middle frame 2 and the time for attaching the positioning posts are reduced, which to a certain extent reduces the manufacturing cycle of this application.

[0057] As a preferred embodiment, a first positioning post 4 and a second positioning post 5 are provided on the inner side of the rear shell 3. The first positioning post 4 can be located at the center of the inner side of the rear shell 3, and the second positioning post 5 is arranged around the first positioning post 4 at uniform intervals. In this preferred embodiment, the number of positioning posts can also be reduced and the manufacturing cycle can be shortened.

[0058] The outer extension 22 of the middle frame 2 is bonded to the edge of the display component 1. The back shell 3 is only fixed to the middle part 21 of the middle frame 2 and does not provide support for the display component 1. The entire display component 1 is suspended relative to the back shell 3. Only the outer extension 22 of the middle frame 2 bears the weight of the display component 1. In order to avoid cracking at the connection between the outer extension 22 and the middle part 21 due to the increased gravity of the display component 1 caused by bumps, it is necessary to reinforce this position.

[0059] In some embodiments, a plurality of mating portions 23 are further provided between the intermediate portion 21 and the extension portion 22. At least two mating portions 23 are distributed on any side of the intermediate portion 21. The mating portions 23 protrude in a direction away from the center of the intermediate portion 21. The mating portions 23 increase the structural strength between the extension portion 22 and the intermediate portion 21. Even when the gravity of the display component 1 is increased due to bumps, the connection between the extension portion 22 and the intermediate portion 21 will not easily crack, thus providing long-term support for the display component 1. Furthermore, the mating portions 23 also strengthen the connection between the rear shell 3 and the middle frame 2. The rear shell 3 is provided with mating portions 23. The mating holes 33 and mating parts 23 are locked together by the locking member 6. By locking the first positioning post 4 and the locking member 6, the connection between the center position of the middle frame 2 and the rear shell 3 is strengthened. The second positioning post 5 surrounds the outer periphery of the first positioning post 4 and is locked together with the locking member 6, which can strengthen the connection between the middle part of the middle frame 2 and the rear shell 3. The mating part 23 surrounds the outer periphery of the second positioning post 5 and is locked together with the locking member 6, which can strengthen the connection between the edge of the middle frame 2 and the rear shell 3. The middle frame 2 and the rear shell 3 thus form an extremely stable structure, providing stable support for the display assembly 1.

[0060] In addition, by fixing the glass panel of the display component 1 with the first positioning post 4, the second positioning post 5 and the locking member 6, the gap between the glass panel and the rear shell 3 can be controlled, so as to achieve a uniform gap between the glass panel and the edge of the rear shell 3.

[0061] A buffer waterproof component 7 is provided between the middle frame 21 and the outer extension 22. The buffer waterproof component 7 can deform under the drive of the middle frame 2 and the rear shell 3 to fill the gap between them. When transporting, handling and using the display screen of this application, the middle frame 2 and the rear shell 3 will move. The weight of the middle frame 2 plus the display component 1 is different from the weight of the rear shell 3. Their inertia is different, and they will approach each other. At this time, the buffer waterproof component 7 can buffer the two to prevent the middle frame 2 and the display component 1 on it from moving too much, causing the display component 1 to touch the edge of the rear shell 3 and be damaged, thus affecting the display effect.

[0062] In addition, the adhesive layer 8 formed around the display component 1 and the middle frame 2 can prevent water from entering through the gap between them. The buffer waterproof component 7 can absorb the moisture that enters the gap between the middle frame 2 and the back shell 3, such as absorbing some condensation or accidental water spills, so as to prevent short circuits in the internal circuits, affecting use, or even causing safety accidents. When selecting waterproof foam, foam processed with ordinary die-cutting can meet the requirement of IP54 waterproof rating on the front of the display component 1.

[0063] It is important to emphasize that the middle and edges of the middle frame 2 are locked to the rear shell 3 in a rigid manner. The buffer waterproof component 7 is provided to reduce the relative displacement between the locking component 6 and the middle frame 2 and prevent cracking at the locking position on the middle frame 2.

[0064] As a preferred method, the buffer waterproof component 7 is made of waterproof foam. It can be a ring-shaped waterproof foam that is directly fitted around the outer periphery of the middle part 21 of the middle frame 2, or multiple segments of waterproof foam that can be formed into a ring can be used to press it onto the step between the outer extension 22 and the middle part 21.

[0065] When using the display screen of this application, accidents may occur, causing damage to the display component 1 or its internal circuitry. In such cases, it is necessary to first remove the middle frame 2 from the back cover 3, and then remove the display component 1 from the middle frame 2 to repair the display component 1 and the circuitry inside the middle frame 2. The outer extension 22 and the edge of the non-display side 12 of this application have an adhesive layer 8, which can be directly cut with a tool to separate the display component 1 from the middle frame 2.

[0066] In some embodiments, the thickness of the adhesive layer 8 between the display component 1 and the middle frame 2 is limited to 0.2mm-1.5mm. Adhesive layer 8 within this thickness range dries easily, enabling rapid bonding and fixing of the display component 1 and the middle frame 2, and also reducing the processing difficulty of the middle frame 2. If the adhesive layer 8 is too thin, it cannot provide sufficient adhesive force and cannot stably fix the display component 1 to the middle frame 2. However, if the adhesive layer 8 is too thick, more glue is used, which is difficult to dry in a short time, thus prolonging the manufacturing cycle. It is also not easy to control the flatness of the display component 1 relative to the middle frame 2, which greatly increases the processing difficulty of the middle frame 2. If the display component 1 tilts slightly beyond the allowable range relative to the middle frame 2, it will also affect the user's viewing experience. In addition, using too much glue will also cause unnecessary waste.

[0067] As a preferred embodiment, the adhesive used in the display screen of this application includes, but is not limited to, RTV adhesive.

[0068] In some embodiments, the middle frame 2 includes a die-cast metal middle frame 2. The metal middle frame 2 can provide stable support and is not easily deformed. While stably supporting the display component 1, it will not cause gaps between itself and the display component 1 due to its own deformation, thus preventing light leakage. This application uses a die-casting molding process to manufacture the middle frame 2, which greatly shortens the manufacturing cycle of the middle frame 2 and accelerates the manufacturing process of the display screen.

[0069] The assembly method of the display screen in this application is to first use glue to attach the display component 1 to the die-cast frame 2, then attach buffer waterproof components 7 such as waterproof foam around the die-cast frame 2, and then assemble them together with the back shell 3.

[0070] It should be emphasized that the machining difficulty of the frame 2 in the die-casting part can be reduced by setting the thickness of the adhesive layer 8.

[0071] When using the display screen of this application, the display component 1 will generate heat, which needs to be conducted away. If it accumulates in the middle frame 2 or the back cover 3, it will cause the temperature to rise. Severe overheating may cause the display component 1 to burn out.

[0072] In some embodiments, a protrusion 34 is formed in the middle of the back cover 3 in a direction away from the middle frame 2. A heat dissipation space 9 is reserved at the corresponding position on the protrusion 34 and the middle frame 2 for heat dissipation. A plurality of evenly spaced heat dissipation holes 35 are provided on the protrusion 34. Heat can accumulate in this space and dissipate to the outside from the heat dissipation holes 35, thereby cooling the circuit components such as the display component 1.

[0073] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

Claims

1. A display screen, characterized in that, include: The display component has a display side and a non-display side that are set relative to each other; The middle frame, whose edges are bonded to the edges of the non-display side; The rear shell has a mating groove, and the middle part of the middle frame is connected to the mating groove so that the middle frame and the rear shell are aligned, and the edge of the mating groove wraps around the narrow edge between the display side and the non-display side of the display component.

2. The display screen according to claim 1, characterized in that, The middle frame has a central portion and an outer extension portion that connects to the edge of the central portion and extends outward; The extension direction of the epitaxial portion is parallel to the surface extension direction of the non-display side, and the edges of the epitaxial portion and the non-display side are bonded together. The opening of the mating groove is stepped; The middle part extends into the interior of the mating groove and is connected and aligned with the mating groove, while the outer extension is located at the opening of the mating groove.

3. The display screen according to claim 2, characterized in that, At least one first positioning post and a plurality of second positioning posts are provided on the outer side of the middle part and / or the inner side of the mating groove; The second positioning post is arranged around the first positioning post; The intermediate part and the mating groove are locked and fixed by the first positioning post, the second positioning post and the locking member.

4. The display screen according to claim 3, characterized in that, The outer side of the middle part is provided with the first positioning post and the second positioning post; Furthermore, the first positioning post is located at the center of the middle part; The second positioning post surrounds the first positioning post and is evenly spaced.

5. The display screen according to claim 3, characterized in that, Multiple mating parts are provided between the middle part and the outer part. At least two mating parts are distributed on any side of the middle part. The rear shell is provided with a number of mating holes corresponding to the mating parts. The mating parts and the mating holes are locked and fixed by locking members.

6. The display screen according to claim 2, characterized in that, The display component includes a touch component and a display component; The touch component defines the display side, the display component is disposed on the side of the touch component opposite to the display side, and the edges of the touch component and the display component form steps; The central portion encloses the display component, and the outer portion is bonded to the edge of the touch component.

7. The display screen according to claim 2, characterized in that, A buffer waterproof component is provided between the middle part and the outer extension part. The buffer waterproof component can deform under the drive of the middle frame and the rear shell to fill the gap between them.

8. The display screen according to claim 2, characterized in that, An adhesive layer is formed on the edge of the extension portion and the non-display side, and the thickness of the adhesive layer is 0.2mm-1.5mm.

9. The display screen according to claim 1, characterized in that, The middle frame includes a die-cast metal middle frame.

10. The display screen according to claim 1, characterized in that, A protrusion is formed in the middle of the rear shell in a direction away from the middle frame. The protrusion and the corresponding position on the middle frame are reserved for heat dissipation, and the protrusion is provided with a plurality of evenly distributed heat dissipation holes.

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