Display module and mobile terminal

Abstract

The embodiment of the application provides a display module and a mobile terminal, the display module comprises a back plate, a display panel, a circuit board assembly and a protection part, the display panel is arranged on one side of the back plate, the circuit board assembly and the display panel are arranged in a first direction, the circuit board assembly is electrically connected with the display panel, the circuit board assembly comprises a first surface and a second surface arranged oppositely, the protection part extends from the first surface of the circuit board assembly to the second surface of the circuit board assembly, the protection part covers the circuit board assembly, and the protection part and the circuit board assembly are fixedly connected through screws, so that the circuit board assembly is protected through the protection part, the service life and the reliability of the circuit board assembly are improved, and when the part where the circuit board assembly is located is pressed, the protection layer can avoid the abnormal sound problem in the prior art.

Description

Technical Field

[0001] This application belongs to the field of display technology, specifically relating to display modules and mobile terminals. Background Technology

[0002] In existing display devices, especially notebook computers (NBs), the two ends of the flexible circuit board are respectively bonded to the display panel and the printed circuit board, and the outside of the flexible circuit board is covered with a shielding adhesive.

[0003] Currently, the main methods for fixing printed circuit boards to backlight modules are screw fastening and tape bonding. In order to ensure that the flexible circuit board is not pulled or torn during the assembly and mechanical testing of the display device, except for the bonding part of the flexible circuit board, other parts of the flexible circuit board are not fixed. This causes the position of the flexible circuit board to easily deform when the part of the flexible circuit board is pressed, resulting in abnormal sounds and affecting the user experience. Summary of the Invention

[0004] This application provides a display module and a mobile terminal to alleviate the shortcomings of related technologies.

[0005] To achieve the above functions, the technical solutions provided in this application are as follows:

[0006] This application provides a display module, including:

[0007] Back panel;

[0008] The display panel is located on one side of the back panel;

[0009] A circuit board assembly, wherein the circuit board assembly and the display panel are spaced apart along a first direction, the circuit board assembly is electrically connected to the display panel, and the circuit board assembly includes a first surface and a second surface disposed opposite to each other;

[0010] A protective portion extending from a first surface of the circuit board assembly to a second surface of the circuit board assembly, the protective portion covering the circuit board assembly;

[0011] The protective part and the circuit board assembly are fixedly connected by screws.

[0012] Optionally, in one embodiment, the protective portion includes a first sub-portion, a second sub-portion, and a third sub-portion, wherein the third sub-portion connects the first sub-portion and the second sub-portion;

[0013] The first sub-part is located on the first surface and is spaced apart from the first surface; the second sub-part is located on the second surface and is spaced apart from the second surface; and the third sub-part is located on the side of the circuit board assembly away from the display panel and is spaced apart from the circuit board assembly.

[0014] Optionally, in one embodiment, the first sub-part has a threaded hole, the second sub-part has a first through hole, and the circuit board assembly has a second through hole. The first through hole, the second through hole, and the threaded hole are correspondingly arranged. The screw passes through the first through hole and the second through hole, and the screw is threadedly connected to the threaded hole.

[0015] Optionally, in one embodiment, the circuit board assembly includes a printed circuit board and a flexible circuit board, the printed circuit board being spaced apart from the display panel along the first direction, one end of the flexible circuit board being connected to the display panel, and the other end of the flexible circuit board being connected to the printed circuit board;

[0016] In this embodiment, at least a portion of the flexible circuit board is disposed between the printed circuit board and the first sub-part, and the first through hole penetrates both the printed circuit board and the flexible circuit board.

[0017] Optionally, in one embodiment, the display panel has a first bonding end on the side near the printed circuit board, and the printed circuit board has a second bonding end on the side near the display panel;

[0018] The flexible circuit board includes a first part connected to the first bonding end, a second part connected to the second bonding end, and a third part located between the first part and the second part;

[0019] The printed circuit board includes a first surface and a second surface, at least a portion of the third portion is located on the first surface, and the first through-hole penetrates the third portion.

[0020] Optionally, in one embodiment, the display panel further includes edge-sealing tape extending from the edge of the display panel away from the back panel to the side of the back panel away from the display panel, the edge-sealing tape covering the printed circuit board and the flexible circuit board;

[0021] At least a portion of the edge-sealing tape is located between the circuit board assembly and the protective part. The edge-sealing tape has a third through hole and a fourth through hole. The third through hole corresponds to the first through hole, and the fourth through hole corresponds to the threaded hole. The screw passes through the first through hole, the third through hole, the second through hole, and the fourth through hole, and the screw is threadedly connected to the threaded hole.

[0022] Optionally, in one embodiment, the display panel further includes edge-binding tape, a first end of which is connected to the edge of the display panel, and a second end of which extends from the edge of the display panel toward the first sub-part, and the second end of which is connected to the side of the first sub-part away from the printed circuit board.

[0023] Wherein, the orthographic projection of the edge-sealing tape on the display panel covers the first bonding end, and the orthographic projection of the first sub-part on the printed circuit board covers the second bonding end.

[0024] Optionally, in one embodiment, the display panel includes an auxiliary tape disposed between the second sub-part of the protective portion and the printed circuit board;

[0025] The auxiliary tape is connected to the second sub-part of the protective part, and the orthographic projection of the auxiliary tape on the printed circuit board covers at least a portion of the orthographic projection of the flexible circuit board on the printed circuit board.

[0026] Optionally, in one embodiment, the back panel further includes a tongue, which is disposed on the side of the back panel away from the display panel. The tongue extends from the back panel toward the printed circuit board, and at least a portion of the tongue is located between the printed circuit board and the protective portion.

[0027] The second surface of the printed circuit board is disposed on the tongue, and the tongue has a fifth through hole, which corresponds to the first through hole. The screw passes through the first through hole, the fifth through hole, and the second through hole, and the screw is threadedly connected to the threaded hole.

[0028] This application also provides a mobile terminal, including a terminal body and any of the above-described display panels; wherein the terminal body and the display panel are integrated into one unit.

[0029] The beneficial effects of this application embodiment are as follows: This application embodiment provides a display module and a mobile terminal. The display module includes a back panel, a display panel, a circuit board assembly, and a protective part. By setting the protective part to extend from a first surface of the circuit board assembly to a second surface of the circuit board assembly, the protective part covers the circuit board assembly, and the protective part and the circuit board assembly are fixedly connected by screws, thereby protecting the circuit board assembly through the protective part and improving the service life and reliability of the circuit board assembly. At the same time, when the part where the circuit board assembly is located is pressed, the protective part can avoid the abnormal noise problem that occurs in the prior art. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a top view of the display module provided in the embodiments of this application;

[0032] Figure 2 This is a first cross-sectional top view of the display module provided in the embodiments of this application;

[0033] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0034] Figure 4 This is a second cross-sectional top view of the display module provided in the embodiments of this application;

[0035] Figure 5 for Figure 4 Enlarged view of point B in the middle. Detailed Implementation

[0036] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. In addition, it should be understood that the specific embodiments described herein are only for illustration and explanation of this application and are not intended to limit this application. In this application, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the upper and lower in the actual use or working mode of the device, specifically the drawing direction in the accompanying drawings; while "inner" and "outer" refer to the outline of the device.

[0037] Furthermore, the terms "first" and "second" are used for descriptive purposes only, and features defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0038] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections or detachable connections; mechanical connections or electrical connections or connections that allow communication; direct connections or indirect connections through an intermediate medium; and connections within two components or interactions between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0039] Furthermore, in this invention, the term "co-layer arrangement" refers to two layers, components, elements, or portions that can be formed using the same fabrication process (e.g., patterning process), and these two layers, components, elements, or portions are generally formed from the same material. For example, co-layer arrangement of two or more functional layers means that these co-layered functional layers can be formed using the same material layer and the same fabrication process, thereby simplifying the fabrication process of the display substrate.

[0040] The following disclosure provides many different embodiments for implementing different structures of this application. To simplify the disclosure of this application, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, various specific examples of processes and materials are provided in this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0041] This application provides a display module and a mobile terminal. These will be described in detail below. It should be noted that the order of description of the following embodiments is not intended to limit the preferred order of the embodiments.

[0042] Please combine Figure 1 , Figure 2 and Figure 3 ;in, Figure 1 This is a top view of the display module provided in the embodiments of this application; Figure 2 This is a first cross-sectional top view of the display module provided in the embodiments of this application; Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0043] This embodiment provides a display module 1, which includes a back plate 11, a display panel 20, a circuit board assembly 30, and a protective part 40. The display panel 20 is disposed on one side of the back plate 11. The circuit board assembly 30 is spaced apart from the display panel 20 along a first direction X and is electrically connected to the display panel 20. The circuit board assembly 30 includes a first surface 31A and a second surface 31B disposed opposite to each other. The protective part 40 extends from the first surface 31A of the circuit board assembly 30 to the second surface 31B of the circuit board assembly 30, and covers the circuit board assembly 30. The protective part 40 and the circuit board assembly 30 are fixedly connected by screws 50.

[0044] It should be noted that in existing display devices, especially notebook computers (NBs), the two ends of the flexible circuit board are respectively bound to the display panel and the printed circuit board, and the flexible circuit board is covered with a shielding adhesive. In order to ensure that the flexible circuit board is not pulled or torn during the assembly and mechanical testing of the display device, except for the binding part of the flexible circuit board, other parts of the flexible circuit board are not fixed. This causes the position of the flexible circuit board to easily deform when the part of the flexible circuit board is pressed, resulting in abnormal sounds and affecting the user experience.

[0045] It is understood that in this embodiment, the protective part 40 extends from the first surface 31A of the circuit board assembly 30 to the second surface 31B of the circuit board assembly 30. The protective part 40 covers the circuit board assembly 30, and the protective part 40 and the circuit board assembly 30 are fixedly connected by screws 50. Thus, the protective part 40 protects the circuit board assembly 30, improving the service life and reliability of the circuit board assembly 30. At the same time, when the part of the circuit board assembly 30 is pressed, the protective part 40 can avoid the abnormal noise problem that exists in the prior art.

[0046] Please continue to combine Figure 1 and Figure 2 In one embodiment, the display module 1 includes a backlight module 10, a display panel 20, a circuit board assembly 30, and a protective part 40; the display panel 20 includes, but is not limited to, an organic light-emitting diode (OLED) display panel and a liquid crystal display (LCD) panel, and this embodiment does not impose a specific limitation on it; wherein, this embodiment takes the display panel 20 as a liquid crystal display panel and the first direction as the X direction as an example to illustrate the technical solution of this application.

[0047] The backlight module 10 includes a back plate 11, and the display panel 20 is located on one side of the back plate 11 and the display panel 20 is located on the light-emitting side of the backlight module 10; the display panel 20 includes a first substrate and a second substrate disposed opposite to each other, and the second substrate is located on the side of the first substrate away from the back plate 11; specifically, the first substrate can be an array substrate and the second substrate can be a color filter substrate.

[0048] In one embodiment, such as Figure 2 and Figure 3 As shown, the protective part 40 includes a first sub-part 41, a second sub-part 42, and a third sub-part 43, wherein the third sub-part 43 connects the first sub-part 41 and the second sub-part 42; wherein the first sub-part 41 is located on the first surface 31A and is spaced apart from the first surface 31A, the second sub-part 42 is located on the second surface 31B and is spaced apart from the second surface 31B, and the third sub-part 43 is located on the side of the circuit board assembly 30 away from the display panel 20 and is spaced apart from the circuit board assembly 30.

[0049] Specifically, the first sub-part 41, the second sub-part 42, and the third sub-part 43 enclose a receiving cavity 40A, and the circuit board assembly 30 is located within the receiving cavity 40A. In a direction perpendicular to the display panel 20, the orthographic projection of the first sub-part 41 covers at least a portion of the orthographic projection of the circuit board assembly 30, and the orthographic projection of the second sub-part 42 covers at least a portion of the orthographic projection of the circuit board assembly 30, thereby enabling the protective part 40 to cover the circuit board assembly 30 and protect it.

[0050] It is understood that, in this embodiment, by setting the first sub-part 41 and the first surface 31A apart, a reserved space is provided between the first sub-part 41 and the circuit board assembly 30. Therefore, when the circuit board assembly 30 is subjected to pressure in the direction from the first surface 31A to the second surface 31B, the first sub-part 41 can prevent the circuit board assembly 30 from being directly subjected to force. Similarly, by setting the second sub-part 42 and the second surface 31B apart, the second sub-part 42 can prevent the circuit board assembly 30 from being directly subjected to force when it is subjected to pressure in the direction from the second surface 31B to the first surface 31A. Furthermore, by setting the third sub-part 43 and the circuit board assembly 30 apart, the third sub-part 43 can prevent the circuit board assembly 30 from being directly subjected to force when it is subjected to pressure in the direction from the circuit board assembly 30 to the display panel 20. The reserved space also acts as a buffer, thereby improving the protective effect of the protective part 40 and avoiding the noise problems found in the prior art.

[0051] Please continue, please combine Figure 1 , Figure 2 and Figure 3 In one embodiment, the first sub-part 41 has a threaded hole 41A, the second sub-part 42 has a first through hole 42A, and the circuit board assembly 30 has a second through hole 30A. The first through hole 42A, the second through hole 30A, and the threaded hole 41A are correspondingly arranged. The screw 50 passes through the first through hole 42A and the second through hole 30A, and the screw 50 is threadedly connected to the threaded hole 41A, thereby simplifying the connection between the protective part 40 and the circuit board assembly 30 and making it easy to operate.

[0052] Furthermore, the circuit board assembly 30 includes a printed circuit board 31 and a flexible circuit board 32. One end of the flexible circuit board 32 is connected to the display panel 20, and the other end of the flexible circuit board 32 is connected to the printed circuit board 31. At least a portion of the flexible circuit board 32 is disposed between the printed circuit board 31 and the first sub-part 41, and the first through hole 42A penetrates the printed circuit board 31 and the flexible circuit board 32.

[0053] Specifically, the printed circuit board 31 includes a first surface 31A and a second surface 31B. The first surface 31A can be the front side of the printed circuit board 31 (e.g., the side facing upwards), and the second surface 31B can be the back side of the printed circuit board 31 (e.g., the side facing downwards).

[0054] Optionally, the display panel 20 includes a third surface 20A away from the back plate 11, the first surface 31A and the second surface 31B are disposed parallel to the third surface 20A, and the first surface 31A is disposed close to the third surface 20A; one end of the flexible circuit board 32 is connected to the third surface 20A of the display panel 20, and the other end of the flexible circuit board 32 is connected to the first surface 31A of the printed circuit board 31, so as to realize the electrical connection between the display panel 20 and the printed circuit board 31.

[0055] In one embodiment, the display panel 20 has a first bonding end 21 on the side near the printed circuit board 31, and the printed circuit board 31 has a second bonding end 311 on the side near the display panel 20; the flexible circuit board 32 includes a first portion 321 connected to the first bonding end 21, a second portion 322 connected to the second bonding end 311, and a third portion 323 located between the first portion 321 and the second portion 322, wherein at least a portion of the third portion 323 is located on the first surface 31A, and the first through hole 42A penetrates the third portion 323.

[0056] Specifically, the first bonding end 21 is disposed on the third surface 20A of the display panel 20, the second bonding segment is disposed on the first surface 31A of the printed circuit board 31, and the first part 321, the second part 322 and the third part 323 of the flexible circuit board 32 are continuous structures, and the three are divided only according to their different positions.

[0057] It is understood that, in this embodiment, by having at least a portion of the third part 323 located on the first surface 31A, the contact area between the flexible circuit board 32 and the printed circuit board 31 is increased, thereby improving the connection effect between the flexible circuit board 32 and the printed circuit board 31. Simultaneously, the first through hole 42A penetrates the third part 323, meaning that the third part 323 and the flexible circuit board 32 can be fixed together by screws 50, further improving the connection effect between the flexible circuit board 32 and the printed circuit board 31, and avoiding the arching phenomenon that occurs in the unbonded parts of the existing flexible circuit board 32, thereby improving the noise problem at the location of the flexible circuit board 32.

[0058] Please continue, please combine Figure 1 , Figure 2 and Figure 3In one embodiment, the display panel 20 further includes an edge-sealing tape 60, which can be used to cover and protect the frame area of ​​the display module 1. The edge-sealing tape 60 extends from the edge of the display panel 20 away from the back plate 11 to the side of the back plate 11 away from the display panel 20. The edge-sealing tape 60 covers the printed circuit board 31 and the flexible circuit board 32. At least a portion of the edge-sealing tape 60 is located between the circuit board assembly 30 and the protective part 40. The edge-sealing tape 60 has a third through hole 60A and a fourth through hole 60B. The third through hole 60A corresponds to the first through hole 42A, and the fourth through hole 60B corresponds to the threaded hole 41A. The screw 50 passes through the first through hole 42A, the third through hole 60A, the second through hole 30A, and the fourth through hole 60B, and the screw 50 is threadedly connected to the threaded hole 41A.

[0059] It is understood that in this embodiment, the screws 50 ensure the stability of the connection between the flexible circuit board 32, the printed circuit board 31, the edge-sealing tape 60, and the protective part 40, thereby further improving the connection effect between the circuit board assembly 30 and the edge-sealing tape 60, as well as the connection effect between the protective part 40 and the edge-sealing tape 60, thus improving the stability of the circuit board assembly 30 and avoiding the noise problem that occurs in the prior art.

[0060] Optionally, in one embodiment, the edge-sealing tape 60 is in direct contact with the flexible circuit board 32. In a direction perpendicular to the display panel 20, the orthographic projection of the edge-sealing tape 60 covers the orthographic projection of the flexible circuit board 32, thereby reducing the gap between the flexible circuit board 32 and the edge-sealing tape 60. This avoids the noise problem that exists in the prior art when the flexible circuit board 32 is pressed.

[0061] Furthermore, please continue to combine Figure 1 , Figure 2 and Figure 3In one embodiment, the back plate 11 further includes a tongue 111, which is disposed on the side of the back plate 11 away from the display panel 20. The tongue 111 extends from the back plate 11 toward the printed circuit board 31, and at least a portion of the tongue 111 is located between the printed circuit board 31 and the protective part 40. The second surface 31B of the printed circuit board 31 is disposed on the tongue 111. The tongue 111 has a fifth through hole 111A, which corresponds to the first through hole 42A. The screw 50 passes through the first through hole 42A, the fifth through hole 111A, and the second through hole 30A, and the screw 50 is threadedly connected to the threaded hole 41A.

[0062] Specifically, the edge-binding tape 60 is located on the side of the tongue 111 away from the printed circuit board 31, and the edge-binding tape 60 is in direct contact with the side of the tongue 111 away from the printed circuit board 31. The screw 50 passes through the first through hole 42A, the third through hole 60A, the fifth through hole 111A, the second through hole 30A, and the fourth through hole 60B, and the screw 50 is threadedly connected to the threaded hole 41A.

[0063] It is understood that in this embodiment, the screws 50 ensure the stability of the connection between the flexible circuit board 32, the printed circuit board 31, the edge-sealing tape 60, the protective part 40, and the backlight module 10, thereby further improving the connection effect between the circuit board assembly 30 and the backlight module 10, as well as the connection effect between the protective part 40 and the backlight module 10, thus improving the stability of the circuit board assembly 30 and avoiding the noise problem that occurs in the prior art.

[0064] Furthermore, please combine Figure 1 , Figure 4 and Figure 5 ;in, Figure 4 This is a second cross-sectional top view of the display module provided in the embodiments of this application; Figure 5 for Figure 4 Enlarged view of point B in the middle.

[0065] In one embodiment, the display panel 20 further includes an edge-binding tape 60, a first end of which is connected to the edge of the display panel 20, and a second end of which extends from the edge of the display panel 20 toward the first sub-part 41, and the second end of which is connected to the side of the first sub-part 41 away from the printed circuit board 31; wherein the orthographic projection of the edge-binding tape 60 on the display panel 20 covers the first bonding end 21, and the orthographic projection of the first sub-part 41 on the printed circuit board 31 covers the second bonding end 311.

[0066] Specifically, the first end of the edge-sealing tape 60 is connected to the edge of the third surface 20A of the display panel 20, the second end of the edge-sealing tape 60 extends from the third surface 20A of the display panel 20 toward the first sub-part 41 of the protective part 40, and the second end of the edge-sealing tape 60 is connected to the side of the first sub-part 41 away from the printed circuit board 31.

[0067] It is understood that in this embodiment, by setting the orthographic projection of the edge-sealing tape 60 on the display panel 20 to cover the first bonding end 21, and the orthographic projection of the first sub-part 41 on the printed circuit board 31 to cover the second bonding end 311, the shielding effect on the flexible circuit board 32 and the printed circuit board 31 is achieved. Furthermore, the edge-sealing tape 60 is only provided on the first surface 31A of the circuit board assembly 30, thereby achieving the thinning of the display module 1.

[0068] In one embodiment, the tongue 111 is disposed on the side of the back plate 11 away from the edge-binding tape 60. The tongue 111 extends from the back plate 11 toward the printed circuit board 31, and at least a portion of the tongue 111 is located between the printed circuit board 31 and the protective part 40. The second surface 31B of the printed circuit board 31 is disposed on the tongue 111. The tongue 111 has a fifth through hole 111A, which corresponds to the first through hole 42A. The screw 50 passes through the first through hole 42A, the fifth through hole 111A, and the second through hole 30A, and the screw 50 is threadedly connected to the threaded hole 41A.

[0069] It is understood that in this embodiment, the screws 50 ensure the stability of the connection between the flexible circuit board 32, the printed circuit board 31, the protective part 40, and the backlight module 10, thereby improving the connection effect between the circuit board assembly 30 and the backlight module 10, as well as the connection effect between the protective part 40 and the backlight module 10, and thus improving the stability of the circuit board assembly 30, which can avoid the noise problem that occurs in the prior art.

[0070] Further, in one embodiment, the display panel 20 includes an auxiliary tape 70 disposed between the second sub-part 42 of the protective portion 40 and the printed circuit board 31; wherein the auxiliary tape 70 is connected to the second sub-part 42 of the protective portion 40, and the orthographic projection of the auxiliary tape 70 on the printed circuit board 31 covers at least a portion of the orthographic projection of the flexible circuit board 32 on the printed circuit board 31.

[0071] Specifically, a fixed potential or a ground potential is applied to the auxiliary tape 70. The display module 1 also includes a ground terminal (not shown in the figure), which is electrically connected to the auxiliary tape 70, thereby applying a ground potential to the auxiliary tape 70, so that the auxiliary tape 70 serves as a shielding layer, thereby preventing external electromagnetic signals from interfering with the signal transmission of the flexible circuit board 32 and the printed circuit board 31.

[0072] This embodiment provides a mobile terminal, which includes a terminal body and a display module as described in any of the above embodiments, wherein the terminal body and the display module are integrated into one unit.

[0073] It is understood that the display module has been described in detail in the above embodiments, and will not be repeated here.

[0074] In specific applications, the mobile terminal can be the display screen of devices such as smartphones, tablets, laptops, smart bracelets, smartwatches, smart glasses, smart helmets, desktop computers, smart TVs, or digital cameras, and can even be applied to electronic devices with flexible displays.

[0075] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0076] The above provides a detailed description of a display module and mobile terminal provided in the embodiments of this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A display module, characterized in that, include: Back panel; The display panel is located on one side of the back panel; A circuit board assembly includes a first surface and a second surface disposed opposite to each other. The circuit board assembly includes a printed circuit board and a flexible circuit board. The printed circuit board is spaced apart from the display panel along the end of the display panel. One end of the flexible circuit board is connected to the display panel, and the other end of the flexible circuit board is connected to the printed circuit board. A protective portion extending from a first surface of the circuit board assembly to a second surface of the circuit board assembly, the protective portion covering the circuit board assembly; The protective part, the printed circuit board, and the flexible circuit board are fixedly connected by screws.

2. The display module according to claim 1, characterized in that, The protective part includes a first sub-part, a second sub-part, and a third sub-part, wherein the third sub-part connects the first sub-part and the second sub-part; The first sub-part is located on the first surface and is spaced apart from the first surface; the second sub-part is located on the second surface and is spaced apart from the second surface; and the third sub-part is located on the side of the circuit board assembly away from the display panel and is spaced apart from the circuit board assembly.

3. The display module according to claim 2, characterized in that, The first sub-part has a threaded hole, the second sub-part has a first through hole, and the circuit board assembly has a second through hole. The first through hole, the second through hole, and the threaded hole are arranged correspondingly. The screw passes through the first through hole and the second through hole, and the screw is threadedly connected to the threaded hole.

4. The display module according to claim 3, characterized in that, At least a portion of the flexible circuit board is disposed between the printed circuit board and the first sub-part, and the first through-hole penetrates both the printed circuit board and the flexible circuit board.

5. The display module according to claim 4, characterized in that, The display panel has a first bonding end on the side near the printed circuit board, and the printed circuit board has a second bonding end on the side near the display panel. The flexible circuit board includes a first part connected to the first bonding end, a second part connected to the second bonding end, and a third part located between the first part and the second part; The printed circuit board includes a first surface and a second surface, at least a portion of the third portion is located on the first surface, and the first through-hole penetrates the third portion.

6. The display module according to claim 5, characterized in that, The display panel also includes edge-sealing tape, which extends from the edge of the display panel away from the back panel to the side of the back panel away from the display panel, and the edge-sealing tape covers the printed circuit board and the flexible circuit board; At least a portion of the edge-sealing tape is located between the circuit board assembly and the protective part. The edge-sealing tape has a third through hole and a fourth through hole. The third through hole corresponds to the first through hole, and the fourth through hole corresponds to the threaded hole. The screw passes through the first through hole, the third through hole, the second through hole, and the fourth through hole, and the screw is threadedly connected to the threaded hole.

7. The display module according to claim 5, characterized in that, The display panel also includes edge binding tape, a first end of which is connected to the edge of the display panel, and a second end of which extends from the edge of the display panel toward the first sub-part, and the second end of which is connected to the side of the first sub-part away from the printed circuit board. Wherein, the orthographic projection of the edge-sealing tape on the display panel covers the first bonding end, and the orthographic projection of the first sub-part on the printed circuit board covers the second bonding end.

8. The display module according to claim 7, characterized in that, The display panel includes an auxiliary tape, which is disposed between the second sub-part of the protective portion and the printed circuit board; The auxiliary tape is connected to the second sub-part of the protective part, and the orthographic projection of the auxiliary tape on the printed circuit board covers at least a portion of the orthographic projection of the flexible circuit board on the printed circuit board.

9. The display module according to claim 4, characterized in that, The back plate also includes a tongue, which is disposed on the side of the back plate away from the display panel. The tongue extends from the back plate toward the printed circuit board, and at least a portion of the tongue is located between the printed circuit board and the protective portion. The second surface of the printed circuit board is disposed on the tongue, and the tongue has a fifth through hole, which corresponds to the first through hole. The screw passes through the first through hole, the fifth through hole, and the second through hole, and the screw is threadedly connected to the threaded hole.

10. A mobile terminal, characterized in that, The mobile terminal includes a terminal body and a display module as described in any one of claims 1 to 9, wherein the terminal body and the display module are integrated into one unit.

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