Display module and display equipment

Abstract

The embodiment of the invention discloses a display module and display equipment. The display module comprises a backlight module, a liquid crystal display panel and an LED display panel. The liquid crystal display panel is arranged on the light emitting side of a light guide plate of the backlight module, and the first circuit board assembly is connected to the liquid crystal display panel. The LED display panel is arranged on the side, away from the liquid crystal display panel, of the light guide plate. The second circuit board assembly is connected to one side of the LED display panel. In the thickness direction of the display module, the first circuit board assembly and the second circuit board assembly are arranged in an overlapped mode. According to the embodiment of the invention, the LED display panel is used as the second display surface, so that the thickness of the display module is reduced, and the double-sided display effect is improved. And secondly, the first circuit board assembly and the second circuit board assembly are overlapped, so that the layout space of the plane is reduced, and the effect of reducing the frame is achieved.

Description

Technical Field

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

[0002] As an important innovation direction in display technology in recent years, the necessity of double-sided display modules is mainly reflected in improving information transmission efficiency, optimizing space utilization, enhancing interactive experience, and adapting to diversified scenario needs. With the further development of AI and materials science, this technology is expected to achieve breakthroughs in more fields and become one of the core components of the smart display ecosystem.

[0003] However, traditional edge-lit double-sided display modules typically use a single light guide plate (LGP) to provide surface light to both upper and lower display panels. Due to the LGP's dot design and the reduced amount of light output from the lower side, the brightness and uniformity of the lower display panel's display are poor. Furthermore, traditional edge-lit display modules require two LCD panels and two sets of backlight film, resulting in a relatively large thickness. Summary of the Invention

[0004] The embodiments of the present application provide a display module and a display device, which can improve the double-sided display effect and reduce the thickness of the display module.

[0005] An embodiment of the present application provides a display module, comprising:

[0006] Backlight module, including light guide plate;

[0007] A liquid crystal display panel is arranged on the light-emitting side of the light guide plate;

[0008] a first circuit board assembly connected to the liquid crystal display panel;

[0009] An LED display panel is provided on a side of the light guide plate away from the liquid crystal display panel; and

[0010] a second circuit board assembly connected to one side of the LED display panel;

[0011] In the thickness direction of the display module, the first circuit board assembly and the second circuit board assembly are overlapped.

[0012] Optionally, in some embodiments of the present application, the first circuit board assembly includes a first flexible circuit board and a first printed circuit board, one end of the first flexible circuit board is connected to the liquid crystal display panel, the other end of the first flexible circuit board is connected to the first printed circuit board, and the first flexible circuit board is connected to the first printed circuit board at a partially bent position, and in the thickness direction of the display module, the first printed circuit board, the first flexible circuit board and the second circuit board assembly are overlapped in pairs.

[0013] Optionally, in some embodiments of the present application, the second circuit board assembly includes a second flexible circuit board and a second printed circuit board, one end of the second flexible circuit board is connected to the LED display panel, and the other end of the second flexible circuit board is connected to the second printed circuit board. In the thickness direction of the display module, the second printed circuit board and the first printed circuit board are overlapped, and the second flexible circuit board overlaps with the non-display part of the liquid crystal display panel.

[0014] Optionally, in some embodiments of the present application, the light guide plate is configured as the substrate of the LED display panel, the LED display panel includes a driving circuit layer and a plurality of LED devices, the driving circuit layer is formed on the light guide plate, and the LED devices are arranged on a side of the driving circuit layer away from the light guide plate.

[0015] Optionally, in some embodiments of the present application, the LED device includes a light-emitting structure layer and a reflective structure layer, the reflective structure layer is arranged on a side of the light-emitting structure layer close to the light guide plate, and the reflective structure layer is configured to reflect light emitted from the light guide plate to the LED device and reflect light emitted from the light-emitting structure layer.

[0016] Optionally, in some embodiments of the present application, the reflective structure layer includes a first distributed Bragg reflector and a second distributed Bragg reflector stacked together, the second distributed Bragg reflector is arranged on a side of the first distributed Bragg reflector close to the light guide plate, the first distributed Bragg reflector is configured to reflect the light of the light-emitting structure layer, and the second distributed Bragg reflector is configured to reflect the light emitted from the light guide plate.

[0017] Optionally, in some embodiments of the present application, the LED device further includes a first substrate, a first conductive pad and a second conductive pad, the light-emitting structure layer is arranged on the first substrate, the reflective structure layer is arranged on a side of the light-emitting structure layer away from the first substrate, the first conductive pad passes through the first distributed Bragg reflector and the second distributed Bragg reflector to connect the first electrode of the light-emitting structure layer, and the second conductive pad is connected to the second electrode of the light-emitting structure layer.

[0018] Optionally, in some embodiments of the present application, the surface of the light guide plate connected to the LED display panel is a plane.

[0019] Optionally, in some embodiments of the present application, the display module further includes a glue layer, the LED display panel includes a second substrate, a driving circuit layer and a plurality of LED devices, the glue layer is connected between the light guide plate and the second substrate, the driving circuit layer is arranged on a side of the second substrate away from the glue layer, and the LED device is arranged on a side of the driving circuit layer away from the second substrate.

[0020] Optionally, in some embodiments of the present application, the LED display panel further includes an appearance coating, the second substrate is transparent, and the appearance coating covers a side of the second substrate close to the adhesive layer.

[0021] Optionally, in some embodiments of the present application, the LED display panel further includes an appearance component provided on the light-emitting side of the LED device, and the appearance component is configured to transmit the color light emitted by the LED device.

[0022] Optionally, in some embodiments of the present application, the LED display panel further includes a reflective layer, the reflective layer having a plurality of hollow openings, the reflective layer covering a side of the driving circuit layer away from the light guide plate, and the LED device is correspondingly arranged in the area of the hollow opening.

[0023] Optionally, in some embodiments of the present application, the display module further includes an outer frame and a cover plate, the backlight module further includes a support member, the outer frame includes a bottom and a side portion, the side portion is disposed on the bottom, the side portion and the bottom form a first accommodation space, and the bottom is provided with a visual opening communicating with the first accommodation space;

[0024] The support member is disposed in the first accommodation space and connected to the bottom. The support member is located outside the visual opening. The support member and the bottom of the outer frame form a second accommodation space communicating with the visual opening.

[0025] The light guide plate and the LED display panel are arranged in the second accommodating space, the visual opening is opposite to the display area of the LED display panel, the liquid crystal display panel is arranged on the side of the support away from the light guide plate and is located in the first accommodating space, the cover plate covers the non-display area of the liquid crystal display panel, the first circuit board assembly and the second circuit board assembly, and the cover plate is connected to the side.

[0026] Correspondingly, an embodiment of the present application further provides a display device, which includes the display module as described in any one of the above embodiments.

[0027] The display module of the present embodiment includes a backlight module, a liquid crystal display panel, and an LED display panel. The liquid crystal display panel is disposed on the light-emitting side of the backlight module's light guide plate, and a first circuit board assembly is connected to the liquid crystal display panel. The LED display panel is disposed on a side of the light guide plate facing away from the liquid crystal display panel. A second circuit board assembly is connected to a side of the LED display panel. The first and second circuit board assemblies overlap in the thickness direction of the display module.

[0028] It is understood that compared to traditional double-sided LCD modules, the embodiment of the present application uses an LED display panel as the second display surface, which not only reduces the thickness of the display module but also improves the double-sided display effect. Secondly, the first circuit board assembly and the second circuit board assembly are overlapped to reduce the planar layout space, thereby achieving the effect of reducing the border. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 Schematic diagram of the structure of the display module provided in the embodiment of the present application;

[0030] Figure 2 yes Figure 1 An enlarged schematic diagram of the M portion;

[0031] Figure 3 Schematic diagram of the structure of the LED device of the display module provided in the embodiment of the present application;

[0032] Figure 4 yes Figure 1 Another enlarged schematic diagram of the middle M part;

[0033] Figure 5 yes Figure 1 Another enlarged schematic diagram of the middle M part;

[0034] Figure 6 It is a structural schematic diagram of the display device provided in an embodiment of the present application.

[0035] Description of reference numerals:

[0036] 1000-display device; 100-display module; 10-backlight module; 20-liquid crystal display panel; 30-first circuit board assembly; 40-LED display panel; 50-second circuit board assembly; 60-outer frame; 70-cover plate; 80-integrated control unit; 90-glue layer; Fh-thickness direction; 11-light guide plate; 12-light board; 13-optical film; 14-support member; 61-bottom; 62-side; 60a-first storage space; 60b-visible opening; 10a-second storage space; 31-first flexible circuit board; 32-first printed circuit board; 51-second flexible circuit board Circuit board; 52-second printed circuit board; 41-driving circuit layer; 42-LED device; 43-reflective layer; 44-appearance part; 45-second substrate; 46-appearance coating; 4a-light-emitting structure layer; 4b-reflective structure layer; 4b1-first distributed Bragg reflector; 4b2-second distributed Bragg reflector; 421-first substrate; 422-first conductive pad; 423-second conductive pad; 4a1-first electrode; 4a2-second electrode; 4a3-multiple quantum well layer; 4a4-P-type semiconductor layer; 43a-hollow mouth; 461-reflective sublayer; 462-appearance sublayer. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of protection of this application. In addition, it should be understood that the specific embodiments described here are only used to illustrate and explain the present application and are not used to limit the present application. In this application, the various embodiments can be combined with each other but will not be repeated one by one. In addition, unless otherwise specified, the directional words used, such as "upper" and "lower", generally refer to the upper and lower parts of the device in actual use or working state, specifically the drawing direction in the drawings; while "inner" and "outer" refer to the outline of the device; the terms "first", "second", "third", etc. are used only as labels and do not impose numerical requirements or establish an order.

[0038] The embodiments of the present application provide a display module and a display device, which are described in detail below. It should be noted that the order of description of the following embodiments does not limit the preferred order of the embodiments.

[0039] Please refer to Figure 1 and Figure 2 An embodiment of the present application provides a display module 100 , which includes a backlight module 10 , a liquid crystal display panel 20 , a first circuit board assembly 30 , an LED display panel 40 and a second circuit board assembly 50 .

[0040] The backlight module 10 includes a light guide plate 11. A liquid crystal display panel 20 is disposed on the light-emitting side of the light guide plate 11. A first circuit board assembly 30 is connected to the liquid crystal display panel 20. An LED display panel 40 is disposed on the side of the light guide plate 11 facing away from the liquid crystal display panel 20. A second circuit board assembly 50 is connected to one side of the LED display panel 40.

[0041] In the thickness direction Fh of the display module 100 , the first circuit board assembly 30 and the second circuit board assembly 50 are overlapped.

[0042] It is understood that, compared to conventional double-sided display LCD modules, the present embodiment employs an LED display panel 40 as the second display surface, which not only reduces the thickness of the display module 100 but also enhances the double-sided display effect. Furthermore, the first circuit board assembly 30 and the second circuit board assembly 50 are arranged in an overlapping manner to reduce the planar layout space and achieve the effect of reducing the bezel.

[0043] Optionally, in some embodiments of the present application, the backlight module 10 further includes a light board 12 and an optical film 13 , wherein the light board 12 is disposed on the light incident side of the light guide plate 11 and the optical film 13 is disposed on the light exit side of the light guide plate 11 .

[0044] Optionally, in some embodiments of the present application, the display module 100 further includes an outer frame 60 , a cover plate 70 and an integrated control component 80 . The backlight module 10 further includes a support member 14 .

[0045] The outer frame 60 includes a bottom 61 and a side portion 62. The side portion 62 is disposed on the bottom 61. The side portion 62 and the bottom 61 form a first receiving space 60a. The bottom 61 is provided with a visual opening 60b communicating with the first receiving space 60a.

[0046] The support member 14 is disposed in the first receiving space 60a and connected to the bottom 61. The support member 14 is located outside the viewing opening 60b. The support member 14 and the bottom 61 of the outer frame 60 form a second receiving space 10a that communicates with the viewing opening 60b.

[0047] The light guide plate 11, light panel 12, optical film 13, and LED display panel 40 are disposed within the second storage space 10a. The visual opening 60b faces the display area of the LED display panel 40. The liquid crystal display panel 20 is disposed on the side of the support member 14 away from the light guide plate 11 and within the first storage space 60a. A cover plate 70 covers the non-display area of the liquid crystal display panel 20, the first circuit board assembly 30, and the second circuit board assembly 50. The cover plate 70 is connected to the side portion 62.

[0048] The integrated control component 80 is disposed in the first receiving space 60a. In the thickness direction Fh of the display module 100, the first circuit board assembly 30 and the integrated control component 80 are overlapped to reduce the frame width.

[0049] Optionally, the integrated control component 80 electrically connects the first circuit board assembly 30 and the second circuit board assembly 50 .

[0050] Optionally, in some embodiments of the present application, the first circuit board assembly 30 includes a first flexible circuit board 31 and a first printed circuit board 32. One end of the first flexible circuit board 31 is connected to the liquid crystal display panel 20, and the other end of the first flexible circuit board 31 is connected to the first printed circuit board 32. The portion where the first flexible circuit board 31 is connected to the first printed circuit board 32 is bent.

[0051] In the thickness direction Fh of the display module 100 , the first printed circuit board 32 , the first flexible circuit board 31 , and the second circuit board assembly 50 are overlapped in pairs to reduce the frame width.

[0052] Optionally, in some embodiments of the present application, the second circuit board assembly 50 includes a second flexible circuit board 51 and a second printed circuit board 52. One end of the second flexible circuit board 51 is connected to the LED display panel 40, and the other end of the second flexible circuit board 51 is connected to the second printed circuit board 52.

[0053] In the thickness direction Fh of the display module 100 , the second printed circuit board 52 and the first printed circuit board 32 are overlapped, and the second flexible printed circuit board 51 and the non-display portion of the liquid crystal display panel 20 are overlapped.

[0054] It is understandable that by overlapping the second flexible circuit board 51 and the liquid crystal display panel 20 , or by overlapping the second printed circuit board 52 and the first printed circuit board 32 , the frame width can be reduced.

[0055] Optionally, both the first flexible circuit board 31 and the second flexible circuit board 51 are chip-on-film. The electronic components of the first flexible circuit board 31 are arranged toward the first printed circuit board 32, while the electronic components of the second flexible circuit board 51 are arranged toward the first printed circuit board 32, to protect the electronic components and reduce the risk of interference with other components during assembly.

[0056] Optionally, in some embodiments of the present application, the light guide plate 11 is configured as a substrate for an LED display panel 40. The LED display panel 40 includes a drive circuit layer 41 and a plurality of LED devices 42. The drive circuit layer 41 is formed on the light guide plate 11, and the LED devices 42 are arranged on a side of the drive circuit layer 41 away from the light guide plate 11.

[0057] It is understood that the light guide plate 11 serves as the base substrate for the LED display panel 40. That is, the driver circuit layer 41 is formed directly on the light guide plate 11, without the need for an additional base substrate, thereby reducing the thickness of the display module 100. Furthermore, the driver circuit layer 41 includes numerous metal traces, which can reflect backlight from the backlight side, improving the backlight's light output efficiency. Furthermore, the arrangement of these numerous metal traces results in a diffuse reflection effect across the entire trace layer, improving the backlight's light output uniformity.

[0058] Optionally, in some embodiments, the LED device 42 may be a sub-millimeter light emitting diode (Mini-LED) or a micro light emitting diode (Micro-LED).

[0059] Optional, please refer to Figure 3 In some embodiments of the present application, the LED device 42 includes a light-emitting structure layer 4a and a reflective structure layer 4b, wherein the reflective structure layer 4b is disposed on a side of the light-emitting structure layer 4a close to the light guide plate 11. The reflective structure layer 4b is configured to reflect light emitted from the light guide plate 11 toward the LED device 42 and reflect light emitted from the light-emitting structure layer 4a.

[0060] It is understood that since the LED display panel 40 is directly formed on the light guide plate 11, the light in the light guide plate 11 will radiate toward the LED display panel 40. Therefore, providing the reflective structure layer 4b on the back side of the LED device 42 can reflect the light, thereby improving the light extraction efficiency of the backlight and reducing the risk of the backlight irradiating the LED device 42.

[0061] It should be noted that the light guide plate 11 is provided with mesh dots on the side near the LED display panel 40. These mesh dots are used to disperse the light entering the light guide plate 11 to improve the uniformity of the light emitted by the light guide plate 11. However, due to the arrangement of the mesh dots, the drive circuit layer 41 is formed on the mesh dots, which destroys the total internal reflection of the mesh dots and reduces the total reflection effect of the mesh dots. Therefore, the provision of the reflective structure layer 4b can compensate for the reflection of light and ensure that sufficient light is provided to the liquid crystal display panel 20.

[0062] Optionally, in some embodiments of the present application, the surface of the light guide plate 11 connected to the LED display panel 40 is a plane.

[0063] It is understood that, based on the provision of reflective structure layer 4b, using reflective structure layer 4b instead of the grid dots on light guide plate 11 can still provide sufficient light to liquid crystal display panel 20. Since grid dots are not required, the surface of light guide plate 11 forming drive circuit layer 41 can be flat. Furthermore, the flat surface of light guide plate 11 forming drive circuit layer 41 makes the wiring in drive circuit layer 41 smoother, reducing the risk of wiring and film layer breakage.

[0064] Optionally, in some embodiments of the present application, the reflective structure layer 4b includes a first distributed Bragg reflector 4b1 and a second distributed Bragg reflector 4b2 that are stacked, and the second distributed Bragg reflector 4b2 is arranged on a side of the first distributed Bragg reflector 4b1 close to the light guide plate 11. The first distributed Bragg reflector 4b1 is configured to reflect light from the light-emitting structure layer 4a, and the second distributed Bragg reflector 4b2 is configured to reflect light emitted from the light guide plate 11.

[0065] It can be understood that in the LED device 42, a first distributed Bragg reflector 4b1 is provided to reflect the light of the light-emitting structure layer 4a, so a second distributed Bragg reflector 4b2 is provided to be formed on the first distributed Bragg reflector 4b1 so that the two can share a light mask, thereby achieving the effect of saving process; secondly, the second distributed Bragg reflector 4b2 is integrated on the LED device 42, which thins the display module 100 and simplifies the assembly steps.

[0066] Optionally, in some embodiments of the present application, the LED device 42 further includes a first substrate 421, a first conductive pad 422, and a second conductive pad 423. The light-emitting structure layer 4a is disposed on the first substrate 421. The reflective structure layer 4b is disposed on a side of the light-emitting structure layer 4a away from the first substrate 421. The first conductive pad 422 extends through the first distributed Bragg reflector 4b1 and the second distributed Bragg reflector 4b2 and connects to the first electrode 4a1 of the light-emitting structure layer 4a. The second conductive pad 423 connects to the second electrode 4a2 of the light-emitting structure layer 4a.

[0067] The first conductive pad 422 and the second conductive pad 423 are respectively bonded and connected to the driving circuit layer 41. The light-emitting structure layer 4a further includes a multi-quantum well layer 4a3 and a P-type semiconductor layer 4a4 disposed between the first electrode 4a1 and the second electrode 4a2. Optionally, the first electrode 4a1 is disposed between the P-type semiconductor layer 4a4 and the first distributed Bragg reflector 4b1. The second electrode 4a2 is an N-type semiconductor layer and is disposed on the first substrate 421.

[0068] Optionally, in some embodiments of the present application, the second distributed Bragg reflector 4b2 can also be replaced with a metal reflective layer or a reflective coating, such as a silver layer or a white oil coating. The metal reflective layer or the reflective coating is arranged to avoid the openings of the first conductive pad 422 and the second conductive pad 423, and the metal reflective layer is insulated from the first conductive pad 422 and the second conductive pad 423, respectively. Compared with the second distributed Bragg reflector 4b2, the metal reflective layer and the reflective coating have a higher reflectivity and can simultaneously reflect the light emitted by the light guide plate 11 and the light emitted by the light-emitting structure layer 4a, thereby improving the light output effect of the LED device 42 and the backlight.

[0069] Optionally, in some embodiments of the present application, the LED display panel 40 further includes a reflective layer 43, which has a plurality of hollow openings 43a, and the reflective layer 43 covers the side of the driving circuit layer 41 away from the light guide plate 11, and the LED device 42 is correspondingly arranged in the area of the hollow opening 43a.

[0070] It is understood that the reflective layer 43 can prevent the backlight from passing through the LED display panel 40 and affecting the display effect of the LED display panel 40. In order to improve the contrast of the LED display panel 40, a light shielding layer can be formed on the reflective layer 43.

[0071] Optionally, in some embodiments of the present application, the LED display panel 40 further includes an appearance component 44 disposed on the light-emitting side of the LED device 42 , and the appearance component 44 is configured to transmit the color light emitted by the LED device 42 .

[0072] It is understandable that by integrating the appearance component 44 into the LED display panel 40 , there is no need to provide an additional appearance component, and the LED display panel 40 can be protected.

[0073] Optionally, the appearance component 44 may be a glass substrate or a camouflage film, which can provide an appearance effect without affecting the display effect of the LED display panel 40 .

[0074] Figure 4 Shown is Figure 3 Another schematic enlargement of the M portion shown in . Figure 4 , parts different from those of the above-described embodiment will be described to avoid redundancy.

[0075] Please refer to Figure 1 and Figure 4In some embodiments of the present application, the display module 100 further includes an adhesive layer 90. The LED display panel 40 includes a second substrate 45, a driving circuit layer 41, and a plurality of LED devices 42. The adhesive layer 90 is connected between the light guide plate 11 and the second substrate 45. The driving circuit layer 41 is disposed on a side of the second substrate 45 away from the adhesive layer 90, and the LED devices 42 are disposed on a side of the driving circuit layer 41 away from the second substrate 45.

[0076] Optionally, the second substrate 45 may be a hard substrate, such as a glass substrate.

[0077] It is understood that, compared to forming the LED display panel 40 directly on the light guide plate 11, some embodiments of the present application use the LED display panel 40 attached to the side of the light guide plate 11 away from the liquid crystal display panel 20, which can avoid the influence of the driving circuit layer 41 on the network dots of the light guide plate 11. Secondly, combined with the provision of the reflective structure layer 4b, the light output effect of the backlight can be improved.

[0078] Figure 5 Shown is Figure 3 Another schematic enlarged view of the M portion shown in . Figure 5 , parts different from those of the above-described embodiment will be described to avoid redundancy.

[0079] exist Figure 5 In the embodiment, the LED display panel 40 is attached to the light guide plate 11 through the adhesive layer 90. The adhesive layer 90 is used to connect the light guide plate 11 and the LED display panel 40.

[0080] In some embodiments of the present application, the LED display panel 40 further includes an exterior coating 46 . The second substrate 45 is transparent, and the exterior coating 46 covers a side of the second substrate 45 close to the adhesive layer 90 .

[0081] It is understandable that, compared to the embodiment of the LED display panel 40 having the appearance part 44, Figure 5 In a corresponding embodiment, the appearance coating 46 is used to replace the appearance part 44 .

[0082] Optionally, the exterior coating 46 is made of black material, so that the exterior coating 46 can not only prevent the backlight from leaking from the side of the LED display panel 40 , but also improve the contrast of the LED display panel 40 .

[0083] Optionally, the exterior coating 46 includes a stacked reflective sublayer 461 and an exterior sublayer 462, with the reflective sublayer 461 disposed on the side of the exterior sublayer 462 closest to the light guide plate 11. The reflective sublayer 461 is used to reflect light emitted from the light guide plate 11, thereby improving the backlight's light extraction efficiency. Furthermore, integrating the reflective sublayer 461 into the exterior coating 46 reduces the thickness of the display module 100, compared to providing an additional reflective layer 43, i.e., replacing the reflective layer 43 with the reflective sublayer 461.

[0084] Optionally, both the reflective sublayer 461 and the exterior sublayer 462 are coatings. The exterior sublayer 462 may be black, gray, or other colors.

[0085] It should be noted that in Figure 5 In the corresponding embodiment, based on the setting of the exterior coating 46, the light from the light guide plate 11 cannot be irradiated to the LED device 42, so Figure 5 In the corresponding embodiment, the second distributed Bragg reflector 4b2 in the reflective structure layer 4b of the LED device 42 is eliminated.

[0086] Please refer to Figure 6 Accordingly, an embodiment of the present application further provides a display device 1000 , which includes the display module 100 as described in any one of the above embodiments.

[0087] It should be noted that the structure of the display module 100 of the display device 1000 of the embodiment of the present application is similar or identical to the structure of the display module 100 of any of the above embodiments. Figures 1 to 5 , so I will not repeat it here.

[0088] Optionally, the display device 1000 is a display terminal. The display device 1000 can be at least one of a smartphone, a tablet computer, a mobile phone, a video phone, an e-book reader, a desktop computer, a laptop computer, a netbook, a workstation, a server, a personal digital assistant, a portable media player, an MP3 player, a television, a mobile medical device, a camera, a game console, a digital camera, a car navigation system, a car display screen, an electronic billboard, an ATM, a wearable device, a VR device, and an AR device.

[0089] The display module 100 of the display device 1000 of the embodiment of the present application includes a backlight module 10, a liquid crystal display panel 20, and an LED display panel 40. The liquid crystal display panel 20 is disposed on the light-emitting side of the light guide plate 11 of the backlight module 10. The first circuit board assembly 30 is connected to the liquid crystal display panel 20; the LED display panel 40 is disposed on the side of the light guide plate 11 facing away from the liquid crystal display panel 20. The second circuit board assembly 50 is connected to one side of the LED display panel 40. In the thickness direction Fh of the display module 100, the first circuit board assembly 30 and the second circuit board assembly 50 are arranged overlapping.

[0090] It is understood that, compared to conventional double-sided display LCD modules, the present embodiment employs an LED display panel 40 as the second display surface, which not only reduces the thickness of the display module 100 but also enhances the double-sided display effect. Furthermore, the first circuit board assembly 30 and the second circuit board assembly 50 are arranged in an overlapping manner to reduce the planar layout space and achieve the effect of reducing the bezel.

[0091] The above is a detailed introduction to a display module and a display device provided in the embodiments of the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. At the same time, for those skilled in the art, based on the ideas of the present application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A display module, characterized in that: include: Backlight module, including light guide plate; A liquid crystal display panel is arranged on the light-emitting side of the light guide plate; a first circuit board assembly connected to the liquid crystal display panel; An LED display panel is arranged on a side of the light guide plate away from the liquid crystal display panel; as well as a second circuit board assembly connected to one side of the LED display panel; In the thickness direction of the display module, the first circuit board assembly and the second circuit board assembly are overlapped.

2. The display module according to claim 1, wherein: The first circuit board assembly includes a first flexible circuit board and a first printed circuit board. One end of the first flexible circuit board is connected to the liquid crystal display panel, and the other end of the first flexible circuit board is connected to the first printed circuit board. The part of the first flexible circuit board connected to the first printed circuit board is bent, and in the thickness direction of the display module, the first printed circuit board, the first flexible circuit board and the second circuit board assembly are overlapped in pairs.

3. The display module according to claim 2, wherein: The second circuit board assembly includes a second flexible circuit board and a second printed circuit board. One end of the second flexible circuit board is connected to the LED display panel, and the other end of the second flexible circuit board is connected to the second printed circuit board. In the thickness direction of the display module, the second printed circuit board and the first printed circuit board are overlapped, and the second flexible circuit board overlaps with the non-display portion of the liquid crystal display panel.

4. The display module according to claim 2, wherein: The light guide plate is configured as a substrate of the LED display panel. The LED display panel includes a driving circuit layer and a plurality of LED devices. The driving circuit layer is formed on the light guide plate. The LED devices are arranged on a side of the driving circuit layer away from the light guide plate.

5. The display module according to claim 4, wherein: The LED device includes a light-emitting structure layer and a reflective structure layer. The reflective structure layer is arranged on a side of the light-emitting structure layer close to the light guide plate. The reflective structure layer is configured to reflect light emitted from the light guide plate to the LED device and reflect light emitted from the light-emitting structure layer.

6. The display module according to claim 5, wherein: The reflective structure layer includes a first distributed Bragg reflector and a second distributed Bragg reflector stacked together, wherein the second distributed Bragg reflector is arranged on a side of the first distributed Bragg reflector close to the light guide plate, the first distributed Bragg reflector is configured to reflect the light of the light-emitting structure layer, and the second distributed Bragg reflector is configured to reflect the light emitted from the light guide plate.

7. The display module according to claim 6, wherein: The LED device also includes a first substrate, a first conductive pad and a second conductive pad. The light-emitting structure layer is arranged on the first substrate, and the reflective structure layer is arranged on a side of the light-emitting structure layer away from the first substrate. The first conductive pad passes through the first distributed Bragg reflector and the second distributed Bragg reflector to connect the first electrode of the light-emitting structure layer, and the second conductive pad is connected to the second electrode of the light-emitting structure layer.

8. The display module according to claim 5, wherein: The surface of the light guide plate connected to the LED display panel is a plane.

9. The display module according to claim 2, wherein: The display module also includes a glue layer, and the LED display panel includes a second substrate, a driving circuit layer and multiple LED devices. The glue layer is connected between the light guide plate and the second substrate, the driving circuit layer is arranged on the side of the second substrate away from the glue layer, and the LED devices are arranged on the side of the driving circuit layer away from the second substrate.

10. The display module according to claim 9, wherein: The LED display panel further includes an appearance coating layer. The second substrate is transparent. The appearance coating layer covers a side of the second substrate close to the adhesive layer.

11. The display module according to any one of claims 4 to 9, wherein: The LED display panel further includes an appearance component disposed on a light-emitting side of the LED device, and the appearance component is configured to transmit the color light emitted by the LED device.

12. The display module according to any one of claims 4 to 9, wherein: The LED display panel further includes a reflective layer having a plurality of hollow openings formed therein. The reflective layer covers a side of the driving circuit layer away from the light guide plate, and the LED devices are correspondingly arranged in the areas of the hollow openings.

13. The display module according to any one of claims 1 to 10, characterized in that: The display module further comprises an outer frame and a cover plate, the backlight module further comprises a support member, the outer frame comprises a bottom and a side portion, the side portion is arranged on the bottom, the side portion and the bottom form a first accommodation space, and the bottom is provided with a visual opening communicating with the first accommodation space; The support member is disposed in the first accommodation space and connected to the bottom. The support member is located outside the visual opening. The support member and the bottom of the outer frame form a second accommodation space communicating with the visual opening. The light guide plate and the LED display panel are arranged in the second accommodating space, the visual opening is opposite to the display area of the LED display panel, the liquid crystal display panel is arranged on the side of the support away from the light guide plate and is located in the first accommodating space, the cover plate covers the non-display area of the liquid crystal display panel, the first circuit board assembly and the second circuit board assembly, and the cover plate is connected to the side.

14. A display device, characterized in that: Comprising the display module according to any one of claims 1-13.

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