Display module and display device

Abstract

The utility model discloses a display module and a display device. The display module comprises a shell, a backlight module, a display panel and a printed circuit board, and a containing cavity is formed in the shell; the backlight module is arranged in the containing cavity and comprises a back plate and a middle frame, the back plate comprises a bottom plate and a first side plate surrounding the edge of the bottom plate, the bottom plate and the first side plate define a mounting cavity, the middle frame comprises a front plate and a second side plate, the front plate is arranged on the side, away from the bottom plate, of the first side plate, and the second side plate is arranged on the side, away from the mounting cavity, of the first side plate. The second side plate is connected with the front plate, and an avoiding space is formed by the second side plate; the display panel is located on the light emitting side of the backlight module. The printed circuit board is electrically connected with the display panel and arranged in the containing cavity, one part of the printed circuit board is located on one side of the middle frame, and the other part of the printed circuit board extends into the avoiding space. The display effect can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display, in particular to a display module and a display device. BACKGROUND

[0002] The liquid crystal display device is light and thin, which is the mainstream trend of the appearance of display. In the related technology, the printed circuit board which is electrically connected with the display panel and originally bent to the back of the display panel is arranged at the ground side frame of the display panel to realize the design of ultra-thin thickness.

[0003] However, the printed circuit board arranged at the ground side frame increases the size of the ground side frame, which cannot realize the demand of narrow frame and affects the display effect.

[0004] Therefore, it is necessary to provide a new technical scheme to solve the above technical problems. CONTENT OF THE INVENTION

[0005] The present application aims to provide a display module and a display device to improve the display effect.

[0006] To solve the above problems, the technical scheme of the present application is as follows:

[0007] The present application provides a display module, which comprises:

[0008] A housing, wherein a containing cavity is formed in the housing;

[0009] A backlight module arranged in the containing cavity, wherein the backlight module comprises a back plate and a middle frame, the back plate comprises a bottom plate and a first side plate surrounding the edge of the bottom plate, the bottom plate and the first side plate form an installation cavity, the middle frame comprises a front plate and a second side plate, the front plate is arranged on the side of the first side plate away from the bottom plate, the second side plate is arranged on the side of the first side plate away from the installation cavity and connected with the front plate, and the second side plate forms an avoiding space;

[0010] A display panel located on the light emitting side of the backlight module; and

[0011] A printed circuit board electrically connected with the display panel and arranged in the containing cavity, wherein a part of the printed circuit board is located on one side of the middle frame, and the other part of the printed circuit board extends into the avoiding space.

[0012] In an embodiment of the present application, the side of the second side plate close to the bottom plate and the side of the first side plate away from the installation cavity form the avoiding space.

[0013] In an embodiment of the present application, the second side plate is provided with a recessed portion away from one side of the mounting cavity, the depth direction of the recessed portion is perpendicular to the plane in which the first side plate lies, and a part of the printed circuit board extends into the recessed portion, and the recessed portion is configured to limit the printed circuit board.

[0014] The recessed portion is the avoiding space.

[0015] In an embodiment of the present application, the depth of the recessed portion is less than or equal to the thickness of the second side plate.

[0016] In an embodiment of the present application, the plane in which the printed circuit board lies intersects the plane in which the first side plate lies, and the first included angle between the plane in which the printed circuit board lies and the plane in which the first side plate lies is less than 90 degrees.

[0017] In an embodiment of the present application, the first included angle between the plane in which the printed circuit board lies and the plane in which the first side plate lies is greater than or equal to 60 degrees.

[0018] In an embodiment of the present application, the second side plate is provided with a recessed portion away from one side of the mounting cavity, the included angle between the depth direction of the recessed portion and the plane in which the first side plate lies is equal to the first included angle, and a part of the printed circuit board extends into the recessed portion, and the recessed portion is configured to limit the printed circuit board.

[0019] The recessed portion is the avoiding space.

[0020] In an embodiment of the present application, the printed circuit board comprises:

[0021] a first circuit board;

[0022] a second circuit board, which is arranged opposite to the first circuit board, and the first circuit board is electrically connected to the second circuit board;

[0023] a part of the first circuit board and a part of the second circuit board extend into the avoiding space.

[0024] In an embodiment of the present application, the printed circuit board further comprises a plurality of circuit modules, and the circuit modules at least include two of a signal transmission circuit, a power management circuit, a control circuit and a protection circuit;

[0025] The first circuit board is provided with at least one circuit module, the second circuit board is provided with at least one circuit module, and the circuit modules of the first circuit board are different from the circuit modules of the second circuit board.

[0026] The printed circuit board further comprises:

[0027] A first connector is arranged on a side of the first circuit board close to the second circuit board and is electrically connected with the first circuit board.

[0028] A second connector is arranged on a side of the second circuit board close to the first circuit board and is electrically connected with the second circuit board, and the first connector is electrically connected with the second connector.

[0029] The application further provides a display module.

[0030] An accommodating cavity is formed in the shell.

[0031] A backlight module is arranged in the accommodating cavity and comprises a back plate, wherein the back plate comprises a bottom plate and a first side plate surrounding an edge of the bottom plate.

[0032] A display panel is located on a light-emitting side of the backlight module.

[0033] A printed circuit board is electrically connected with the display panel and is arranged in the accommodating cavity, and the printed circuit board is located on one side of the first side plate.

[0034] An included angle formed by a plane where the printed circuit board is located and a plane where the first side plate is located is less than 90 degrees.

[0035] The application provides a display device comprising a display module, wherein the display module comprises a shell, a backlight module, a display panel and a printed circuit board, the shell is internally formed with an accommodating cavity, the backlight module is arranged in the accommodating cavity, the backlight module comprises a back plate and a middle frame, the back plate comprises a bottom plate and a first side plate surrounding an edge of the bottom plate, the bottom plate and the first side plate surround an installation cavity, the middle frame comprises a front plate and a second side plate, the front plate is arranged on a side of the first side plate away from the bottom plate, the second side plate is arranged on a side of the first side plate away from the installation cavity and is connected with the front plate, and the second side plate is formed with a avoiding space, the display panel is located on a light-emitting side of the backlight module, and the printed circuit board is electrically connected with the display panel and is arranged in the accommodating cavity, part of the printed circuit board is located on one side of the middle frame, and another part of the printed circuit board extends into the avoiding space.

[0036] In the application, on one hand, the printed circuit board originally bent to the back of the display panel is arranged on one side of the backlight module, so that the thickness of the display panel is reduced, and the design of light and thin display panel is realized. On the other hand, the avoiding space is formed on a side of the middle frame of the backlight module away from the installation cavity, part of the printed circuit board extends into the avoiding space, so that the size of the frame of the display panel is reduced, the demand of narrow frame is realized, and the display effect is improved. BRIEF DESCRIPTION OF DRAWINGS

[0037] Figure 1 is a schematic diagram of a display module in the related art;

[0038] Figure 2 is a schematic diagram of a display device of the present application;

[0039] Figure 3 is a schematic diagram of a first embodiment of a display module of the present application;

[0040] Figure 4 is a schematic diagram of a backlight module and a printed circuit board of the present application;

[0041] Figure 5 is a schematic diagram of a second embodiment of a display module of the present application;

[0042] Figure 6 is a schematic diagram of a second embodiment of a display module of the present application;

[0043] Figure 7 is another schematic diagram of a backlight module and a printed circuit board of the present application;

[0044] Figure 8 is a schematic diagram of a third embodiment of a display module of the present application;

[0045] Figure 9 is another schematic diagram of a third embodiment of a display module of the present application;

[0046] Figure 10 is a schematic diagram of a fourth embodiment of a display module of the present application;

[0047] Figure 11 is another schematic diagram of a fourth embodiment of a display module of the present application;

[0048] Figure 12 is a schematic diagram of a fifth embodiment of a display module of the present application. DETAILED DESCRIPTION

[0049] The meanings of the terms used in the specification and claims correspond to the meanings commonly understood by those of ordinary skill in the art to which the present application pertains. The terms used in the specification and claims are used only for the purpose of facilitating the description and understanding of the present application, and are not intended to limit the present application to the narrow meanings of the specific terms used in the specification and claims.

[0050] Please refer to Figure 1In the related art, the display module 100' includes a housing 10', a backlight module 20', a display panel 30', and a printed circuit board 40'. For the purpose of light and thin design, the printed circuit board 40' which is electrically connected to the display panel 30' and originally bent to the back of the display panel 30' is arranged at the ground side frame of the display panel 30', so as to reduce the thickness H1 of the display module 100' and realize the design of ultra-thin thickness of the display module 100'. However, the printed circuit board 40' arranged at the ground side frame increases the size L1 of the housing 10' at the ground side frame, which cannot realize the design of narrow frame and affects the display effect.

[0051] Please refer to Figure 2 The display device 1000 can be a tablet computer, an electronic reader, an electronic display screen, a notebook computer, a mobile phone, an augmented reality (AR) \ virtual reality (VR) device, a media player, a wearable device, a digital camera, a vehicle-mounted navigator, etc. The display device 1000 includes a display module 100.

[0052] In the first embodiment of the present application:

[0053] Please refer to Figure 3 The display module 100 includes a housing 10, a backlight module 20, a display panel 30, and a printed circuit board 40. The housing 10 has a receiving cavity Z1 formed therein.

[0054] The backlight module 20 is arranged in the receiving cavity Z1. The backlight module 20 includes a back plate 21 and a middle frame 22. The back plate 21 includes a bottom plate 211 and a first side plate 212 surrounding an edge of the bottom plate 211. The bottom plate 211 and the first side plate 212 surround an installation cavity Z2. The middle frame 22 includes a front plate 221 and a second side plate 222. The front plate 221 is arranged on a side of the first side plate 212 away from the bottom plate 211. The second side plate 222 is arranged on a side of the first side plate 212 away from the installation cavity Z2 and connected with the front plate 221. The second side plate 222 forms an avoiding space Z3.

[0055] The display panel 30 is located on a light emitting side of the backlight module 20. The printed circuit board 40 is electrically connected to the display panel 30 and arranged in the receiving cavity Z1. Part of the printed circuit board 40 is located on a side of the middle frame 22, and the other part of the printed circuit board 40 extends into the avoiding space Z3.

[0056] In the first embodiment of the present application, on the one hand, by arranging the printed circuit board 40 originally bent to the back of the display panel 30 on one side of the backlight module 20, the thickness H2 of the display panel 30 is reduced, and the design of thin and light display panel 30 is realized. On the other hand, by forming the avoidance space Z3 on the side of the middle frame 22 of the backlight module 20 away from the mounting cavity Z2, part of the printed circuit board 40 extends into the avoidance space Z3, thereby reducing the size of the frame of the display panel 30, thereby realizing the narrow frame requirement and improving the display effect.

[0057] In the present application, the display panel 30 and the printed circuit board 40 are electrically connected through the flexible circuit board 50.

[0058] Referring to Figure 4 Optionally, the second side plate 222 and the first side plate 212 form an avoidance space Z3 on the side of the second side plate 222 close to the bottom plate 211 and the side of the first side plate 212 away from the mounting cavity Z2.

[0059] In the present embodiment, by forming the avoidance space Z3 on the side of the second side plate 222 close to the bottom plate 211 and the side of the first side plate 212 away from the mounting cavity Z2, part of the printed circuit board 40 can extend into the avoidance space Z3, thereby reducing the size L2 of the printed circuit board 40 at the frame.

[0060] Referring to Figure 1 In the related art, the entire printed circuit board 40 is arranged at the frame, resulting in a large size L1 of the printed circuit board 40 at the frame, which cannot realize the design of narrow frame and affects the display effect.

[0061] Referring to Figure 3 In the present embodiment, part of the printed circuit board 40 is arranged in the avoidance space Z3, so that the size L2 of another part of the printed circuit board 40 at the frame can be relatively reduced, thereby realizing the design of narrow frame and improving the display effect.

[0062] In the second embodiment of the present application:

[0063] In order to avoid redundancy, the second embodiment of the present application will describe the different parts from the first embodiment of the present application.

[0064] The second embodiment of the present application is different from the first embodiment of the present application in that:

[0065] Optionally, the second side plate 222 is provided with a recessed part 223 on the side away from the mounting cavity Z2. The depth direction of the recessed part 223 is perpendicular to the plane where the first side plate 212 is located. Part of the printed circuit board 40 extends into the recessed part 223. The recessed part 223 is configured to limit the printed circuit board 40. The recessed part 223 is the avoidance space Z3.

[0066] Compared with the first embodiment, in the second embodiment, the part of the printed circuit board 40 extending into the recessed portion 223 is limited by the recessed portion 223. That is, the recessed portion 223 plays a limiting role on the printed circuit board 40.

[0067] Please refer to Figure 5 Optionally, the depth of the recessed portion 223 is less than the thickness of the first side plate 212 in the direction away from the mounting cavity Z2. In this embodiment, the recessed portion 223 does not penetrate the second side plate 222. In order to further improve the limiting effect of the recessed portion 223 on the printed circuit board 40, glue can be arranged in the recessed portion 223, so as to realize the fixation of the printed circuit board 40 and the middle frame 22 after the printed circuit board 40 extends into the recessed portion 223. At this time, due to the part of the printed circuit board 40 arranged in the recessed portion 223, the size L3 of another part of the printed circuit board 40 located at the frame can be relatively reduced, so as to realize the design of narrow frame.

[0068] Please refer to Figure 6 Optionally, the depth of the recessed portion 223 is equal to the thickness of the first side plate 212 in the direction away from the mounting cavity Z2. At this time, the recessed portion 223 penetrates the first side plate 212. Compared with the first embodiment, the recessed portion 223 in the second embodiment is arranged on the second side plate 222, and plays a limiting role on the printed circuit board 40. Figure 5 Compared with the embodiment in which the recessed portion 223 does not penetrate the second side plate 222, the size of the printed circuit board 40 extending into the recessed portion 223 in the present application is larger, so as to further reduce the size L4 of another part of the printed circuit board 40 located at the frame. In this embodiment, the size L4 of the frame is less than the size L3 of the frame in the embodiment shown in Figure 5 The size L3 of the frame in the embodiment shown in the size L4 of the frame in the present embodiment, so as to further reduce the frame of the display panel 30, realize the design of narrow frame, and improve the display effect.

[0069] Please refer to Figure 7 The recessed portion 223 is formed on the second side plate 222, and plays a limiting role on the printed circuit board 40. Compared with the first embodiment shown in the first embodiment, the stability of the internal structure of the display module 100 in the second embodiment is stronger. Figure 4

[0070] In the third embodiment of the present application:

[0071] In order to avoid redundancy, the third embodiment of the present application will describe the different parts from the first embodiment of the present application.

[0072] The third embodiment of the present application is different from the first embodiment of the present application in that:

[0073] Please refer to Figure 8 Optionally, the plane where the printed circuit board 40 is located intersects the plane where the first side plate 212 is located. The first included angle B between the plane where the printed circuit board 40 is located and the plane where the first side plate 212 is located is less than 90 degrees. ​

[0074] In the embodiment, since the frame of the display module 100 has a certain space in the thickness direction, the printed circuit board 40 is arranged obliquely, so that the space of the part can be fully utilized, the width of the printed circuit board 40 in the direction parallel to the bottom plate 211 is reduced, the frame size is reduced, the narrow-frame design is realized, and the display effect is improved.

[0075] In the embodiment, on the basis that a part of the printed circuit board 40 extends into the avoiding space Z3 to reduce the frame size, the printed circuit board 40 is arranged obliquely, so that the frame size can be further reduced, the narrow-frame design is realized, and the display effect is improved.

[0076] In the embodiment, the size L5 of the frame is less than Figure 3 In the embodiment, the size L2 of the frame is less than the size L5 of the frame of the display panel 30, so that the frame of the display panel 30 is further reduced, the narrow-frame design is realized, and the display effect is improved.

[0077] Optionally, a first included angle B between a plane where the printed circuit board 40 is located and a plane where the first side plate 212 is located is less than 90 degrees.

[0078] Optionally, the first included angle B between the plane where the printed circuit board 40 is located and the plane where the first side plate 212 is located is greater than or equal to 60 degrees.

[0079] The specific value of the first included angle B depends on the thickness of the display module 100. When the thickness of the display module 100 is relatively thick, the value of the first included angle B is relatively large. When the thickness of the display module 100 is relatively thin, the value of the first included angle B is relatively small. With the decrease of the first included angle B, the size of the frame can be further reduced on the basis of realizing the light and thin design of the display module 100, the narrow-frame design is realized, and the display effect is improved.

[0080] The value of the first included angle B is one of 60 degrees, 61 degrees, 62 degrees, 63 degrees, 64 degrees, 65 degrees, 66 degrees, 67 degrees, 68 degrees, 69 degrees, 70 degrees, 71 degrees, 72 degrees, 73 degrees, 74 degrees, 75 degrees, 76 degrees, 77 degrees, 78 degrees, 79 degrees, 80 degrees, 81 degrees, 82 degrees, 83 degrees, 84 degrees, 85 degrees, 86 degrees, 87 degrees, 88 degrees, and 89 degrees.

[0081] Please refer to Figure 9 Optionally, a recessed part 223 is arranged on the side of the second side plate 222 away from the mounting cavity Z2. The included angle between the depth direction of the recessed part 223 and the plane where the first side plate 212 is located is equal to the first included angle B. A part of the printed circuit board 40 extends into the recessed part 223. The recessed part 223 is configured to limit the printed circuit board 40. The recessed part 223 is the avoiding space Z3.

[0082] Compared with the previous embodiment in the third embodiment, the present embodiment can further improve the stability of the internal structure of the display module 100 by limiting the printed circuit board 40 through the recess 223. The recess 223 corresponds to the inclined printed circuit board 40, forms a structure with a diagonal opening, can keep the inclination angle of the printed circuit board 40 consistent, and reduce the possibility of position deviation of the printed circuit board 40. The depth of the recess 223 can be less than or equal to the thickness of the second side plate 222.

[0083] In the present embodiment, the size L6 at the frame is smaller than the size L4 at the frame of the embodiment shown in the figure, so as to further reduce the frame of the display panel 30, realize the design of narrow frame, and improve the display effect. Figure 6 In the present embodiment, the size L6 at the frame is smaller than the size L4 at the frame of the embodiment shown in the figure, so as to further reduce the frame of the display panel 30, realize the design of narrow frame, and improve the display effect.

[0084] In the fourth embodiment of the present application:

[0085] In order to avoid redundancy, the fourth embodiment of the present application will describe the different parts from the first embodiment of the present application.

[0086] The fourth embodiment of the present application is different from the first embodiment of the present application in that:

[0087] Please refer to Figure 10 Optionally, the printed circuit board 40 includes a first circuit board 41 and a second circuit board 42. The second circuit board 42 is arranged opposite to the first circuit board 41. The first circuit board 41 is electrically connected with the second circuit board 42. Part of the first circuit board 41 and part of the second circuit board 42 extend into the avoiding space Z3.

[0088] In the present embodiment, a printed circuit board 40 with a large planar size is split into two or more printed circuit boards 40 with a small planar size. Among the multiple printed circuit boards 40 with a small size, adjacent two printed circuit boards 40 can be arranged opposite to each other, or arranged side by side or in parallel. Adjacent two printed circuit boards 40 can be electrically connected through a board-to-board connector.

[0089] In the present embodiment, different functional circuit modules on a printed circuit board 40 with a large planar size are split and arranged on multiple printed circuit boards 40 with a small size, so as to reduce the width of the single printed circuit board 40 along the direction parallel to the bottom plate 211, thereby reducing the frame size L7, realizing the design of narrow frame, and improving the display effect.

[0090] Optionally, the printed circuit board 40 further includes multiple circuit modules. The circuit modules at least include two of a signal transmission circuit, a power management circuit, a control circuit, and a protection circuit.

[0091] The first circuit board 41 is provided with at least one circuit module. The second circuit board 42 is provided with at least one circuit module. The circuit module of the first circuit board 41 is different from the circuit module of the second circuit board 42.

[0092] The printed circuit board 40 further comprises a first connector 43 and a second connector 44. The first connector 43 is arranged on the side of the first circuit board 41 close to the second circuit board 42 and is electrically connected with the first circuit board 41. The second connector 44 is arranged on the side of the second circuit board 42 close to the first circuit board 41 and is electrically connected with the second circuit board 42. The first connector 43 is electrically connected with the second connector 44.

[0093] The first connector 43 and the second connector 44 are board-to-board connectors.

[0094] Please refer to Figure 11 Optionally, the plane where the first circuit board 41 is located intersects with the plane where the first side plate 212 is located, and the included angle between the plane where the first circuit board 41 is located and the plane where the first side plate 212 is located is less than 90 degrees.

[0095] Optionally, the plane where the second circuit board 42 is located intersects with the plane where the first side plate 212 is located, and the included angle between the plane where the second circuit board 42 is located and the plane where the first side plate 212 is located is less than 90 degrees.

[0096] Optionally, the included angle between the plane where the first circuit board 41 is located and the plane where the first side plate 212 is located is equal to the included angle between the plane where the second circuit board 42 is located and the plane where the first side plate 212 is located.

[0097] In the embodiment, the first circuit board 41 and the second circuit board 42 are arranged obliquely, so as to reduce the width of the first circuit board 41 and the second circuit board 42 along the direction parallel to the bottom plate 211, thereby reducing the frame size L8 and realizing the design of narrow frame and improving the display effect.

[0098] In the fifth embodiment of the present application:

[0099] In order to avoid redundancy, the fifth embodiment of the present application will describe the different parts from the first embodiment of the present application.

[0100] The fifth embodiment of the present application is different from the first embodiment of the present application in that:

[0101] Please refer to Figure 12 The present embodiment further provides a display module 100, which comprises a housing 10, a backlight module 20, a display panel 30 and a printed circuit board 40. The housing 10 is internally formed with a receiving cavity Z1.

[0102] The backlight module 20 is arranged in the accommodating cavity Z1. The backlight module 20 comprises a back plate 21. The back plate 21 comprises a bottom plate 211 and a first side plate 212 surrounding the edge of the bottom plate 211.

[0103] The display panel 30 is located on the light-out side of the backlight module 20. The printed circuit board 40 is electrically connected with the display panel 30 and arranged in the accommodating cavity Z1. The printed circuit board 40 is located on one side of the first side plate 212.

[0104] The angle C between the plane where the printed circuit board 40 is located and the plane where the first side plate 212 is located is less than 90 degrees.

[0105] In the fifth embodiment of the present application, on the one hand, by arranging the printed circuit board 40 originally bent to the back of the display panel 30 on one side of the backlight module 20, the thickness of the display panel 30 is reduced, and the design of thin and light display panel 30 is realized. On the other hand, since the frame of the display module 100 has a certain space in the thickness direction, by arranging the printed circuit board 40 obliquely, the space of this part can be fully utilized, the width of the printed circuit board 40 along the direction parallel to the bottom plate 211 is reduced, and thus the frame size L9 is reduced, the design of narrow frame is realized, and the display effect is improved.

[0106] The specific embodiments of the present application are described in detail above. The above-mentioned embodiments disclosed in the present application are only preferred embodiments of the present application. For those skilled in the art, many modifications and improvements can be made without departing from the concept of the present application. These modifications and improvements fall within the scope of the claims of the present application.

Claims

1. A display module, characterized by The display panel is located on the light-emitting side of the backlight module. The printed circuit board is electrically connected with the display panel and is arranged in the accommodating cavity. The second side plate is provided with a recessed portion on the side away from the mounting cavity. The depth direction of the recessed portion is perpendicular to the plane of the first side plate. The depth of the recessed portion is less than or equal to the thickness of the second side plate. The plane of the printed circuit board intersects the plane of the first side plate.

2. The display module of claim 1, wherein, The first included angle between the plane of the printed circuit board and the plane of the first side plate is greater than or equal to 60 degrees.

3. The display module of claim 1, wherein the display module is configured to be mounted on a display stand. The second side plate is provided with a recessed portion on the side away from the mounting cavity. The depth direction of the recessed portion forms an included angle with the plane of the first side plate, and the included angle is equal to the first included angle.

4. The display module of claim 3, wherein the display module is configured to be mounted on a display device. The printed circuit board includes:

5. The display module of claim 1, wherein the display module is configured to be mounted on a display stand. The first circuit board is arranged opposite to the second circuit board.

6. The display module of claim 5, wherein the display module is configured to be mounted to a display module mounting surface of a display module mounting structure. The first circuit board and the second circuit board are electrically connected.

7. The display module of claim 5, wherein the display module is configured to be mounted on a display stand. A part of the first circuit board and a part of the second circuit board extend into the avoiding space. The printed circuit board further includes a plurality of circuit modules.

8. The display module of any one of claims 1-7, wherein, The circuit modules include at least two of a signal transmission circuit, a power management circuit, a control circuit, and a protection circuit. The first circuit board is provided with at least one circuit module. The second circuit board is provided with at least one circuit module. The circuit modules of the first circuit board are different from the circuit modules of the second circuit board.

9. The display module of claim 8, wherein the display module is configured to be mounted to a display module mounting surface of a display module mounting structure. The printed circuit board further includes: The first connector is arranged on the side of the first circuit board close to the second circuit board and is electrically connected with the first circuit board. The second connector is arranged on the side of the second circuit board close to the first circuit board and is electrically connected with the second circuit board. The first connector is electrically connected with the second connector. The display panel is located on the light-emitting side of the backlight module.

10. A display module, characterized by The printed circuit board is electrically connected with the display panel and is arranged in the accommodating cavity. The printed circuit board includes: The first circuit board is arranged opposite to the second circuit board. The first circuit board and the second circuit board are electrically connected. A part of the first circuit board and a part of the second circuit board extend into the avoiding space. The printed circuit board further includes a plurality of circuit modules. The circuit modules include at least two of a signal transmission circuit, a power management circuit, a control circuit, and a protection circuit. The first circuit board is provided with at least one circuit module. The second circuit board is provided with at least one circuit module. The circuit modules of the first circuit board are different from the circuit modules of the second circuit board. The printed circuit board further includes: The first connector is arranged on the side of the first circuit board close to the second circuit board and is electrically connected with the first circuit board. The second connector is arranged on the side of the second circuit board close to the first circuit board and is electrically connected with the second circuit board. The first connector is electrically connected with the second connector. The backlight module is arranged in the accommodating cavity and comprises a back plate, the back plate comprises a bottom plate and a first side plate arranged around the edge of the bottom plate; The display panel is located on the light exit side of the backlight module; and The printed circuit board is electrically connected with the display panel and arranged in the accommodating cavity, and the printed circuit board is located on one side of the first side plate. An included angle formed by the plane of the printed circuit board and the plane of the first side plate is less than 90 degrees. The display module comprises the display module as claimed in any one of claims 1-10.

11. A display device comprising: ​

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