Display module and display device

Abstract

The utility model discloses a display module and a display device.The display module comprises a display panel, a backlight module and a first flexible circuit board, the backlight module is located on the back side of the display panel, one end of the first flexible circuit board is bound to the display panel, and the other end of the first flexible circuit board is bound to the display panel; the direction from the backlight module to the display panel is set as a first direction, and the backlight module comprises a back plate, an optical film group and a printed circuit board; the optical film set is arranged on the side, facing the display panel, of the back plate. The printed circuit board is arranged in the light emitting direction of the backlight module, the printed circuit board and the side portion of the optical film set are arranged in parallel and at intervals, the side, away from the side portion of the optical film set, of the printed circuit board is electrically connected with a connector and an electronic component, and the side, facing the side portion of the optical film set, of the printed circuit board is electrically connected with a light-emitting element; the other end of the first flexible circuit board is electrically connected to the printed circuit board.

Description

Technical Field

[0001] This application relates to the technical field of display devices, and particularly relates to a display module and a display device. Background Art

[0002] With the development of intelligent vehicles, more and more automotive companies are now committed to researching and innovating more intelligent automotive screens. In the near future, our automotive screens will show a trend of multi-screen and large-screen development. To adapt to this development, an in-vehicle integrated display module has emerged. Currently, the existing in-vehicle display module architecture includes a display panel and a backlight module. The display panel is composed of a cover plate, an optical adhesive layer, an upper polarizer, a color filter substrate, an array substrate, a lower polarizer, and a circuit board. The backlight module is composed of components such as a polarizing brightness enhancement film, a prism sheet, a bottom diffuser, a light guide plate, a reflector, a back plate, and a light bar. Since there are many components and parts in the in-vehicle display module, it not only makes the self-weight of the in-vehicle display module relatively large, but also makes the assembly of the in-vehicle display module complex. Summary of the Utility Model

[0003] The embodiments of this application provide a display module and a display device, which can simplify redundant parts, reduce the self-weight of the backlight module, and facilitate assembly.

[0004] In a first aspect, the embodiments of this application provide a display module, including a display panel, a backlight module, and a first flexible circuit board. The backlight module is located on the back side of the display panel. One end of the first flexible circuit board is bonded to the display panel. The backlight module includes:

[0005] A back plate;

[0006] An optical film group, arranged on the side of the back plate facing the display panel; and,

[0007] A printed circuit board, arranged on the side of the back plate facing the display panel. The printed circuit board is arranged along the light-emitting direction of the backlight module. The printed circuit board is parallel and spaced from the side of the optical film group. One side of the printed circuit board facing away from the side of the optical film group is electrically connected with a connector and electronic components, and one side of the printed circuit board facing the side of the optical film group is electrically connected with a light-emitting element;

[0008] Wherein, the other end of the first flexible circuit board is electrically connected to the printed circuit board.

[0009] In one embodiment, a jack is opened on the back plate, and the jack is located on the side of the printed circuit board facing away from the optical film group;

[0010] The display module further includes a second flexible circuit board, which is arranged along the light-emitting direction of the backlight module and is parallel to the printed circuit board. One end of the second flexible circuit board passes through the jack and is electrically connected to the connector. The other end of the second flexible circuit board is located on the side of the backplane away from the display panel, and the other end of the second flexible circuit board is electrically connected to an external power supply.

[0011] In one embodiment, in the light-emitting direction of the backlight module, the surface of the printed circuit board extends beyond the surface of the optical film group, and the surface of the printed circuit board is adhered to the display panel through a first adhesive layer.

[0012] In one embodiment, the backplane includes a bottom plate and a side plate integrally formed. The bottom plate and the side plate enclose a receiving cavity, and the opening of the receiving cavity is arranged toward the display panel side.

[0013] The optical film group is located in the receiving cavity and is arranged on the bottom plate.

[0014] The printed circuit board is located in the receiving cavity and is arranged on the bottom plate. The printed circuit board is located between the side part of the optical film group and the side plate.

[0015] In one embodiment, a first avoidance groove is formed on the surface of the side plate facing the connector.

[0016] Both the connector and the electronic components are accommodated in the first avoidance groove.

[0017] In one embodiment, the display module further includes a cover plate, which is arranged on the light-emitting side of the display panel. The cover plate is adhered to the display panel through a second adhesive layer. The peripheral edge of the cover plate extends beyond the peripheral edge of the display panel. The cover plate covers the opening of the receiving cavity. The part of the cover plate extending beyond the display panel is placed on the side plate, and the cover plate is adhered to the surface of the side plate away from the bottom plate through a third adhesive layer.

[0018] Wherein, the display panel is located in the receiving cavity.

[0019] A second avoidance groove is formed on the inner wall of the side plate to avoid the display panel and the first flexible circuit board.

[0020] In one embodiment, an installation boss is arranged on the surface of the bottom plate facing the display panel. The installation boss is located between the side part of the optical film group and the side plate. The installation boss has a first side face facing the optical film group.

[0021] The printed circuit board is located between the mounting boss and the side of the optical film group, and the printed circuit board is adhered to the first side surface through a fourth adhesive layer.

[0022] In one embodiment, a mounting groove communicating with the accommodating cavity is provided on the bottom plate;

[0023] The optical film group is arranged on the bottom wall of the mounting groove;

[0024] The printed circuit board is arranged on the bottom wall of the mounting groove, and the printed circuit board is adhered to the side wall of the mounting groove through the fourth adhesive layer;

[0025] Wherein, the mounting boss is formed on the peripheral part of the notch of the mounting groove corresponding to the bottom plate;

[0026] The side wall of the mounting groove forms the first side surface.

[0027] In one embodiment, a reflective layer is provided on one side surface of the printed circuit board facing the optical film group;

[0028] The light-emitting element is arranged on one side surface of the reflective layer facing the optical film group.

[0029] In a second aspect, an embodiment of the present application further provides a display device, including the above-mentioned display module.

[0030] Beneficial effects: In the display module provided by the present application, by integrating the printed circuit board inside the backlight module and reasonably arranging the printed circuit board, the structural arrangement of the printed circuit board and the optical film group is made compact, thereby improving the space utilization rate inside the backlight module and reducing the overall volume of the backlight module; at the same time, integrating connectors, electronic components and light-emitting elements on the printed circuit board can not only simplify redundant components and reduce the self-weight of the backlight module, but also make the connectors, electronic components and light-emitting elements be reasonably arranged, which can further improve the space utilization rate inside the backlight module; and the integrated printed circuit board not only makes the entire backlight module easy to assemble, but also the first flexible circuit board bonded to the display panel can be electrically connected to the printed circuit board, simplifying the assembly process of the display panel and the backlight module and the bonding process of the display panel. Description of the Drawings

[0031] The following combines the drawings and details the specific implementation manners of the present application, and the technical solutions and other beneficial effects of the present application will be obvious.

[0032] Figure 1 It is a schematic structural diagram of the display module provided by the embodiment of the present application;

[0033] Figure 2 ForFigure 1 Cross-sectional view along A-A;

[0034] Figure 3 is Figure 2 Enlarged schematic view of partial B in;

[0035] Figure 4 Schematic structural diagram of the display module (with electronic components) provided by an embodiment of the present application;

[0036] Figure 5 Schematic structural diagram of the display module (with a second flexible circuit board) provided by an embodiment of the present application;

[0037] Figure 6 Schematic structural diagram of the display module (without a backplane) from a first perspective provided by an embodiment of the present application;

[0038] Figure 7 Schematic structural diagram of the display module (without a backplane) from a second perspective provided by an embodiment of the present application. Detailed implementation manners

[0039] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present application.

[0040] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application and simplifying the description, and cannot be construed as a limitation to the present application. Moreover, unless otherwise clearly specified and limited, the fact that the first feature is "above" or "below" the second feature only means that the first feature has a higher horizontal height than the second feature or the first feature has a lower horizontal height than the second feature, and does not indicate a direct connection relationship.

[0041] In addition, the terms "first" and "second" are only used for descriptive purposes, and the features defined with "first" and "second" may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more, unless otherwise clearly and specifically defined.

[0042] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", and "coupled" should be understood in a broad sense and do not specifically limit the connection method. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0043] The following disclosure provides many different embodiments for implementing different structures of the present application. To simplify the disclosure of the present application, components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the present application. In addition, the present application provides examples of various specific processes and materials, but those of ordinary skill in the art can realize the application of other processes and / or the use of other materials.

[0044] The present application provides a display module 100 and a display device. The display module may be a display module of a vehicle-mounted display device.

[0045] In a first aspect, an embodiment of the present application provides a display module 100. Please refer to Figures 1 to 3 , the display module 100 includes a display panel 1, a backlight module 2, and a first flexible circuit board 3. The backlight module 2 is located on the back side of the display panel 1. One end of the first flexible circuit board 3 is bonded to the display panel 1. The backlight module 2 includes a back plate 21, an optical film group 22, and a printed circuit board 23. The optical film group 22 is disposed on the side of the back plate 21 facing the display panel 1. The printed circuit board 23 is disposed on the side of the back plate 21 facing the display panel 1. The printed circuit board 23 is arranged along the light-emitting direction of the backlight module 2. The printed circuit board 23 is parallel and spaced from the side of the optical film group 22. A connector 24 and electronic components 25 are electrically connected to the side of the printed circuit board 23 facing away from the optical film group 22. A light-emitting element 26 is electrically connected to the side of the printed circuit board 23 facing the optical film group 22. Wherein, the other end of the first flexible circuit board 3 is electrically connected to the printed circuit board 23.

[0046] In the display module 100 provided by the present application, by integrating the printed circuit board 23 inside the backlight module 2 and arranging the printed circuit board 23 reasonably, the structural arrangement of the printed circuit board 23 and the optical film group 22 is made compact, thereby improving the space utilization rate inside the backlight module 2 and reducing the overall volume of the backlight module 2. At the same time, by integrating the connector 24, the electronic components 25 and the light-emitting element 26 on the printed circuit board 23, not only can redundant components be simplified and the self-weight of the backlight module 2 be reduced, but also the connector 24, the electronic components 25 and the light-emitting element 26 are reasonably arranged, which can further improve the space utilization rate inside the backlight module 2. Moreover, the integrated printed circuit board 23 not only makes the entire backlight module 2 easy to assemble, but also the first flexible circuit board 3 bonded to the display panel 1 can be electrically connected to the printed circuit board 23, simplifying the assembly process of the display panel 1 and the backlight module 2 and the bonding process of the display panel 1.

[0047] In the present application, the light-emitting direction of the backlight module 2 is set as the first direction F1.

[0048] The present application does not specifically limit the connection methods of the connector 24, the electronic components 25 and the light-emitting element 26. Generally, the connector 24, the electronic components 25 and the light-emitting element 26 are all soldered on the printed circuit board 23.

[0049] Moreover, the connector 24 can be a leaf spring connector 24, a pin connector 24 or a pluggable connector 24; the electronic components 25 can be resistors or capacitors, etc.; the light-emitting element 26 can be an LED (English full name: Light Emitting Diode, Chinese abbreviation: light-emitting diode), and no specific limitation is made here.

[0050] In the first direction F1, the display panel 1 includes a stacked lower polarizer, an array substrate, a color filter substrate, and an upper polarizer. One side edge of the array substrate extends beyond the edge of the color filter substrate to form a bonding area, and the array substrate is provided with bonding terminals at positions corresponding to the bonding area; one end of the first flexible circuit board 3 is electrically connected to the bonding terminals, and the other end of the first flexible circuit board 3 is electrically connected to the printed circuit board 23. In this way, through the FOB (English full name: FPC on the Board, Chinese abbreviation: hard and soft board welding combination) technology, the display panel 1 is bonded to the printed circuit board 23.

[0051] Please refer to Figure 3 and Figure 5, in one embodiment, jacks 211 are formed on the backplane 21, and the jacks 211 are located on the side of the printed circuit board 23 away from the optical film group 22; the display module 100 further includes a second flexible circuit board 4, the second flexible circuit board 4 is arranged along the light-emitting direction F1 of the backlight module 2 and is arranged in parallel with the printed circuit board 23. One end of the second flexible circuit board 4 passes through the jack 211 and is electrically connected to the connector 24, and the other end of the second flexible circuit board 4 is located on the side of the backplane 21 away from the display panel 1, and the other end of the second flexible circuit board 4 is used for being electrically connected to an external power supply.

[0052] By providing the jacks 211 on the backplane 21, one end of the second flexible circuit board 4 passes through the jacks 211 and is electrically connected to the connector 24, and the other end of the second flexible circuit board 4 is used for being electrically connected to an external power supply, so as to realize the power supply of the external power supply to the printed circuit board 23 and the signal transmission between the second flexible circuit board 4 and the printed circuit board 23; meanwhile, by inserting the second flexible circuit board 4 through the jacks 211, the assembly process of the second flexible circuit board 4 is simplified.

[0053] It can be known that the backlight module 2 is located on the back side of the display panel 1, that is to say, the display panel 1 is located on the side of the optical film group 22 away from the backplane 21; in the light-emitting direction F1 of the backlight module 2, the surface of the printed circuit board 23 extends beyond the surface of the optical film group 22, and the surface of the printed circuit board 23 is adhered to the display panel 1 through a first adhesive layer 5; with such an arrangement, the printed circuit board 23 plays a supporting role for the display panel 1, so that the OD (English full name: Optical Distance, Chinese abbreviation: optical distance) value between the display panel 1 and the backlight module 2 is ensured; and the surface of the printed circuit board 23 is adhered to the display panel 1 through the first adhesive layer 5, improving the assembly stability of the display panel 1.

[0054] The form of the first adhesive layer 5 in this application is not specifically limited, and the first adhesive layer 5 can be a foam adhesive.

[0055] In one embodiment, please refer to Figure 3 and Figure 4, the backplane 21 includes a bottom plate 212 and a side plate 213 formed integrally. The bottom plate 212 and the side plate 213 enclose a receiving cavity 214, and the opening of the receiving cavity 214 is arranged facing the display panel 1; the optical film group 22 is located in the receiving cavity 214 and is arranged on the bottom plate 212; the printed circuit board 23 is located in the receiving cavity 214 and is arranged on the bottom plate 212, and the printed circuit board 23 is located between the side part of the optical film group 22 and the side plate 213.

[0056] In the light-emitting direction F1 of the backlight module 2, the optical film group 22 includes a reflector 221, a light guide plate 222, a diffusion sheet 223, a brightness enhancement film 224, and a polarizing film 225 arranged in sequence on the bottom plate 212.

[0057] It can be known that the printed circuit board 23 is located between the side part of the optical film group 22 and the side plate 213, and the printed circuit board 23 is arranged along the light-emitting direction F1 of the backlight module 2; on the side of the printed circuit board 23 facing away from the optical film group 22, a connector 24 and electronic components 25 are electrically connected; a first avoidance groove 215 is formed on the surface of the side plate 213 facing the connector 24; and the connector 24 and the electronic components 25 are both accommodated in the first avoidance groove 215, which can reduce the distance between the printed circuit board 23 and the side part of the optical film group 22 and the side plate 213, making the arrangement of the printed circuit board 23 and the optical film group 22 in the receiving cavity 214 more compact.

[0058] Please refer further to Figure 3 , in an embodiment, an installation boss 217 is arranged on the surface of the bottom plate 212 facing the display panel 1. The installation boss 217 is located between the side part of the optical film group 22 and the side plate 213, and the installation boss 217 has a first side surface facing the optical film group 22; the printed circuit board 23 is located between the installation boss 217 and the side part of the optical film group 22, and the printed circuit board 23 is adhered to the first side surface through a fourth adhesive layer 9.

[0059] It is not difficult to understand that the printed circuit board 23 is arranged along the light-emitting direction F1 of the backlight module 2, and the printed circuit board 23 is fixed to the bottom plate 212 only by a very thin side, with poor stability; by arranging the installation boss 217 on the bottom plate 212 and adhering the printed circuit board 23 to the first side surface of the installation boss 217 through the fourth adhesive layer 9, the assembly stability of the printed circuit board 23 is improved.

[0060] This application does not specifically limit the form of the fourth adhesive layer 9. The fourth adhesive layer 9 can be set as a double-sided adhesive.

[0061] Similarly, this application does not specifically limit the formation of the mounting boss 217. In one embodiment, a protrusion is directly provided on the bottom plate 212 to form the boss.

[0062] In another embodiment, a mounting groove 218 communicating with the accommodating cavity 214 is provided on the bottom plate 212; the optical film group 22 is disposed on the bottom wall of the mounting groove 218; the printed circuit board 23 is disposed on the bottom wall of the mounting groove 218, and the printed circuit board 23 is adhered to the side wall of the mounting groove 218 through the fourth adhesive layer 9; wherein, the mounting boss 217 is formed on the peripheral edge portion of the bottom plate 212 corresponding to the notch of the mounting groove 218; the side wall of the mounting groove 218 forms the first side surface.

[0063] That is to say, the mounting groove 218 is provided on the bottom plate 212, the mounting boss 217 is formed by using the peripheral edge portion of the bottom plate 212 corresponding to the notch of the mounting groove 218, the side wall of the mounting groove 218 forms the first side surface, the printed circuit board 23 is disposed on the bottom wall of the mounting groove 218, and is adhered to the side wall of the mounting groove 218 through the fourth adhesive layer 9; in this way, not only can the components in the backlight module 2 be arranged more compactly, further reducing the volume of the backlight module 2; but also the formation of the mounting boss 217 by the grooving method can further reduce the self-weight of the back plate 21, thereby reducing the self-weight of the backlight module 2.

[0064] Continuing with the above embodiment, please refer to Figure 3 and Figure 6 , in one embodiment, the display module 100 further includes a cover plate 6, the cover plate 6 is disposed on the light-emitting side of the display panel 1, the cover plate 6 is adhered to the display panel 1 through a second adhesive layer 7, the peripheral edge of the cover plate 6 extends beyond the peripheral edge of the display panel 1, the cover plate 6 covers the opening of the accommodating cavity 214, the part of the cover plate 6 extending beyond the display panel 1 is placed on the side plate 213, and the cover plate 6 is adhered to the surface of the side plate 213 away from the bottom plate 212 through a third adhesive layer 8; wherein, the display panel 1 is located in the accommodating cavity 214; a second avoidance groove 216 is formed in the inner wall of the side plate 213 to avoid the display panel 1 and the first flexible circuit board 3.

[0065] It can be understood that the display panel 1 is placed in the accommodation cavity 214. One end of the first flexible circuit board 3 is bonded to the display panel 1. After the first flexible circuit board 3 is bent, the other end thereof is bonded to the printed circuit board 23. To avoid insufficient space in the accommodation cavity 214, the side plate 213 will exert extrusion on the display panel 1 and the first flexible circuit board 3. By providing the second avoidance groove 216 to avoid the display panel 1 and the first flexible circuit board 3, the space of the accommodation cavity 214 is enlarged on the basis of maintaining the size of the existing back plate 21, so as to provide sufficient accommodation space for the display panel 1 and the first flexible circuit board 3.

[0066] In this embodiment, the cover plate 6 covers the opening of the accommodation cavity 214. The cover plate 6 is adhered to the bearing protrusion on the side plate 213 through the third adhesive layer 8, so as to fix the cover plate 6 on the side plate 213; the display panel 1 is adhered to one side of the cover plate 6 facing the optical film group 22 through the second adhesive. The peripheral edge of the display panel 1 is set to be retracted compared with the peripheral edge of the cover plate 6. The display panel 1 is placed in the accommodation cavity 214; in the light-emitting direction F1 of the backlight module 2, the surface of the printed circuit board 23 extends beyond the surface of the optical film group 22, and the surface of the printed circuit board 23 is adhered to the display panel 1 through the first adhesive layer 5; thus, the assembly among the backlight module 2, the display panel 1 and the cover plate 6 is realized.

[0067] It can be known that the cover plate 6 is arranged on the outermost side of the display panel 1 and is usually made of glass or other transparent materials, mainly to protect the display panel 1 from external damage and provide a good touch experience.

[0068] The present application does not specifically limit the forms of the second adhesive layer 7 and the third adhesive layer 8. The second adhesive layer 7 can be set as OCA (English full name: Optical Clear Adhesive, Chinese abbreviation: optical transparent adhesive); the third adhesive layer 8 can be set as VHB (English full name: Very High Bond Adhesive, Chinese abbreviation: high-performance double-sided adhesive) or hot melt adhesive.

[0069] In one embodiment, please refer to Figure 7 , a reflective layer 27 is arranged on one side surface of the printed circuit board 23 facing the optical film group 22; the light-emitting element 26 is arranged on one side surface of the reflective layer 27 facing the optical film group 22.

[0070] The present application does not specifically limit the form of the reflective layer 27. The reflective layer 27 may be a white ink layer coated on the printed circuit board, or the reflective layer 27 may also be a white single-sided PET tape attached to the printed circuit board. By coating a white ink layer or attaching a white single-sided PET tape on the side of the printed circuit board 23 facing the optical film group 22 to reflect light, it not only helps to direct more of the light emitted by the LED to the optical film group 22, thereby improving the overall luminous efficiency; but also enables the light emitted by the LED to be more evenly distributed across the entire panel, reducing the hot spot phenomenon; and the white ink layer has a certain thermal conductivity, which can help with heat dissipation and increase the lifespan of the LED.

[0071] As described above, the optical film group 22 and the printed circuit board 23 are disposed on the bottom plate 212. The printed circuit board 23 is integrated with a light-emitting element 26, electronic components 25, and a connector 24; a jack 211 is provided on the bottom plate 212, and the second flexible circuit board 4 is inserted into the jack 211 and bound to the connector 24 to achieve power supply and signal transmission to the printed circuit board 23; after the light-emitting element 26 is powered on and lit, the light emitted by the light-emitting element 26 is processed by the optical film group 22 to convert the point light source into a uniform surface light source and emit it towards the back side of the display panel 1; the light sequentially passes through the lower polarizer, the array substrate, the color filter substrate, and the upper polarizer, and exits from the cover plate 6.

[0072] In this way, by integrating the printed circuit board 23 inside the backlight module 2 and reasonably arranging the printed circuit board 23, the structural arrangement of the printed circuit board 23 and the optical film group 22 is made compact, thereby improving the space utilization rate inside the backlight module 2 and reducing the overall volume of the backlight module 2; at the same time, integrating the connector 24, the electronic components 25, and the light-emitting element 26 on the printed circuit board 23 not only simplifies redundant components and reduces the self-weight of the backlight module 2, but also enables the connector 24, the electronic components 25, and the light-emitting element 26 to be reasonably arranged, further improving the space utilization rate inside the backlight module 2; and the integrated printed circuit board 23 not only makes the entire backlight module 2 easy to assemble, but also the first flexible circuit board 3 bound to the display panel 1 can be electrically connected to the printed circuit board 23, simplifying the assembly process of the display panel 1 and the backlight module 2 and the binding process of the display panel 1.

[0073] Second aspect, an embodiment of the present application further provides a display device. The display device includes a display module 100. It should be noted that the display module 100 is set as the above-mentioned display module 100, that is to say, the display module 100 includes all the technical features of the above-mentioned display module 100, the display device includes all the embodiments of the above-mentioned display module 100, and thus has all the technical effects of the above embodiments, which will not be elaborated here one by one.

[0074] The above has introduced in detail a display module and a display device provided by an embodiment of the present application. Specific examples are used herein to elaborate on the principle and implementation manner of the present application. The description of the above embodiments is only used to help understand the technical solution and its core idea of the present application; those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A display module, characterized in that: The device comprises a display panel, a backlight module and a first flexible circuit board, wherein the backlight module is located on the back side of the display panel, one end of the first flexible circuit board is bound to the display panel, and the backlight module comprises: Back panel; an optical film group, arranged on a side of the back plate facing the display panel; and A printed circuit board is arranged on a side of the back plate facing the display panel, the printed circuit board is arranged along the light emitting direction of the backlight module, the printed circuit board is parallel to and spaced from the side of the optical film group, a side of the printed circuit board away from the side of the optical film group is electrically connected to a connector and electronic components, and a side of the printed circuit board facing the side of the optical film group is electrically connected to a light emitting element; Wherein, the other end of the first flexible circuit board is electrically connected to the printed circuit board.

2. The display module according to claim 1, wherein: The back plate is provided with a plug hole, and the plug hole is located on a side of the printed circuit board away from the optical film group; The display module also includes a second flexible circuit board, which is arranged along the light emitting direction of the backlight module and is arranged parallel to the printed circuit board. One end of the second flexible circuit board is inserted into the jack and is electrically connected to the connector. The other end of the second flexible circuit board is located on the side of the back plate away from the display panel, and the other end of the second flexible circuit board is electrically connected to an external power supply.

3. The display module according to claim 1, wherein: In the light emitting direction of the backlight module, the surface of the printed circuit board is arranged beyond the surface of the optical film group, and the surface of the printed circuit board is adhered to the display panel through a first adhesive layer.

4. The display module according to claim 1, wherein: The back plate includes an integrally formed bottom plate and side plates, wherein the bottom plate and the side plates enclose a receiving cavity, and the opening of the receiving cavity is arranged toward one side of the display panel; The optical film group is located in the accommodating cavity and is arranged on the bottom plate; The printed circuit board is located in the accommodating cavity and is arranged on the bottom plate. The printed circuit board is located between the side of the optical film group and the side plate.

5. The display module according to claim 4, characterized in that: A first avoidance groove is provided on a surface of the side plate facing the connector; The connector and the electronic components are both accommodated in the first avoidance groove.

6. The display module according to claim 4, characterized in that: The display module further includes a cover plate, which is arranged on the light-emitting side of the display panel, the cover plate is adhered to the display panel through a second adhesive layer, the peripheral edge of the cover plate is arranged beyond the peripheral edge of the display panel, the cover plate is arranged to cover the opening of the accommodating cavity, the portion of the cover plate beyond the display panel is placed on the side plate, and the cover plate is adhered to a surface of the side plate away from the bottom plate through a third adhesive layer; Wherein, the display panel is located in the accommodating cavity; The inner wall of the side plate is provided with a second avoidance groove, and the second avoidance groove avoids the display panel and the first flexible circuit board.

7. The display module according to claim 4, characterized in that: A mounting boss is disposed on a surface of one side of the bottom plate facing the display panel, the mounting boss is located between the side portion of the optical film group and the side plate, and the mounting boss has a first side surface facing the optical film group; The printed circuit board is located between the mounting boss and the side of the optical film assembly, and the printed circuit board is adhered to the first side surface through a fourth adhesive layer.

8. The display module according to claim 7, wherein: A mounting groove communicating with the accommodating cavity is provided on the bottom plate; The optical film group is arranged on the bottom wall of the mounting groove; The printed circuit board is arranged on the bottom wall of the mounting groove, and the printed circuit board is adhered to the side wall of the mounting groove through the fourth adhesive layer; Wherein, the mounting boss is formed on the bottom plate at the peripheral edge of the slot corresponding to the mounting slot; The side wall of the mounting groove forms the first side surface.

9. The display module according to claim 1, wherein: A reflective layer is provided on a surface of the printed circuit board on one side facing the optical film group; The light emitting element is arranged on a surface of the reflective layer facing the optical film set.

10. A display device, characterized in that: Comprising a display module as described in any one of claims 1-9.

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