Back plate, display module, and display apparatus

Abstract

A back plate, a display module, and a display apparatus. The back plate comprises a main body part and a support part, arranged at an edge of the main body part. A first connecting wall, a second connecting wall, and a third connecting wall of the support part are sequentially connected to form a U-shaped groove with a notch facing an inner side of the back plate. The display module comprises: a display panel; the back plate, arranged on a back side of the display panel; and an intermediate frame, arranged on a side of the display panel and a side of the back plate. The display panel is connected to the first connecting wall of the back plate and the intermediate frame is connected to the third connecting wall of the back plate.

Description

Back panel, display module and display device

[0001] This application claims priority to Chinese Patent Application No. 202423060079.5, filed on December 11, 2024, entitled “Backplate, Display Module and Display Device”, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application belongs to the field of display technology, and in particular relates to a backplate, display module and display device. Background Technology

[0003] Current LCD display modules used in televisions typically include components such as an LCD panel, back panel, backlight strip, reflector, diffuser, optical film, and mid-frame. The LCD panel is connected to the mid-frame using double-sided adhesive, while the back panel and diffuser are mounted onto the mid-frame. This assembly method has the following drawbacks: because the mid-frame needs to support the LCD panel and therefore requires high strength to prevent deformation, only metal mid-frames can be used, and plastic mid-frames are incompatible (the strength of plastic mid-frames is insufficient), resulting in higher production costs. Technical solutions

[0004] This application provides a back panel, a display module, and a display device to solve the problem that existing display modules are incompatible with plastic frames.

[0005] In a first aspect, embodiments of this application provide a back panel, the back panel including a main body and a support portion disposed on the edge of the main body, the support portion including a first connecting wall, a second connecting wall and a third connecting wall, the first connecting wall, the second connecting wall and the third connecting wall being connected in sequence to form a U-shaped groove, the opening of the U-shaped groove facing the inner side of the back panel, and the third connecting wall being connected to the main body.

[0006] Secondly, embodiments of this application also provide a display module, the display module including a display panel, a middle frame and the aforementioned back plate, the back plate being disposed on the back side of the display panel, the middle frame being disposed on the side of the display panel and the back plate; the display panel being connected to a first connecting wall of the back plate, and the middle frame being connected to a third connecting wall of the back plate.

[0007] Thirdly, embodiments of this application also provide a display device, which includes the display module described above. Beneficial effects

[0008] The back panel, display module, and display device provided in this application embodiment have a support portion provided along the edge of the main body of the back panel. The support portion includes a first connecting wall, a second connecting wall, and a third connecting wall. The first connecting wall, the second connecting wall, and the third connecting wall are connected in sequence to form a U-shaped groove. The opening of the U-shaped groove faces the inside of the back panel. When the back panel is applied to the display module, the display panel is connected to the first connecting wall of the back panel, and the middle frame is connected to the third connecting wall of the back panel. Since the middle frame does not need to support the display panel, there is no need to worry about the plastic middle frame being too weak and deforming. Therefore, a plastic middle frame can be used in the display module, achieving compatibility with plastic middle frames and helping to reduce production costs. Attached Figure Description

[0009] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of this application. Those skilled in the art can obtain other drawings based on these drawings without creative effort. In the following description, the same reference numerals denote the same parts.

[0010] Figure 1 is a schematic diagram of the first structure of the backplate provided in the embodiment of this application.

[0011] Figure 2 is a schematic diagram of a second structure of the backplate provided in an embodiment of this application.

[0012] Figure 3 is an exploded view of the display module provided in an embodiment of this application.

[0013] Figure 4 is a first cross-sectional schematic diagram of the display module provided in the embodiment of this application.

[0014] Figure 5 is an enlarged structural diagram of part A of the display module shown in Figure 4.

[0015] Figure 6 is a second cross-sectional schematic diagram of the display module provided in the embodiment of this application.

[0016] Figure 7 is an enlarged structural diagram of part B of the display module shown in Figure 6.

[0017] Figure 8 is a third cross-sectional view of the display module provided in the embodiment of this application.

[0018] Figure 9 is an enlarged structural diagram of part C of the display module shown in Figure 8.

[0019] Figure 10 is a fourth cross-sectional view of the display module provided in the embodiments of this application.

[0020] Figure 11 is an enlarged structural diagram of a portion of the display module D shown in Figure 10.

[0021] Figure 12 is a structural schematic diagram of the back plate and middle frame provided in the embodiment of this application.

[0022] Figure 13 is a cross-sectional view of the back panel and middle frame shown in Figure 12 along the AA direction.

[0023] Figure 14 is an enlarged structural diagram of a portion E of the back panel and middle frame shown in Figure 13.

[0024] Figure 15 is a cross-sectional view of the back panel and middle frame shown in Figure 12 along the BB direction.

[0025] Figure 16 is an enlarged structural diagram of a portion of the back panel and middle frame shown in Figure 15.

[0026] Reference numerals: 100, Display panel; 101, Gap; 102, Wear-resistant part; 200, Back plate; 201, U-shaped groove; 202, Accommodating cavity; 210, Main body; 220, Support part; 221, First connecting wall; 2211, First stepped surface; 2212, Second stepped surface; 222, Second connecting wall; 223, Third connecting wall; 2231, Boss; 2232, Threaded hole; 300, Middle frame; 301, Shielding part; 302, Connecting part; 303, Through hole; 401, Screw; 402, First adhesive; 403, Second adhesive; 500, Optical film; 600, Light source; 700, Diffuser plate; 800, Reflector sheet; 900, Back cover. Embodiments of the present invention

[0027] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0028] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0029] In this application, the term "exemplary" is used to mean "used as an example, illustration, or illustration." Any embodiment described as "exemplary" in this application is not necessarily to be construed as being more preferred or advantageous than other embodiments.

[0030] This application provides a back panel, as shown in Figures 1 and 2. The back panel 200 includes a main body 210 and a support 220 disposed on the edge of the main body 210. The support 220 includes a first connecting wall 221, a second connecting wall 222 and a third connecting wall 223. The first connecting wall 221, the second connecting wall 222 and the third connecting wall 223 are connected in sequence to form a U-shaped groove 201. The opening of the U-shaped groove 201 faces the inside of the back panel 200. The third connecting wall 223 is connected to the main body 210.

[0031] This application embodiment also provides a display module, as shown in Figures 3 to 16. The display module includes a display panel 100, a back panel 200, and a middle frame 300. The specific structure of the back panel 200 is as described in the above embodiment. The display panel 100 has a front (i.e., the side facing the user during normal use) and a back (i.e., the side away from the user during normal use). The back panel 200 is disposed on the back side of the display panel 100, and the middle frame 300 is disposed on the side of the display panel 100 and the back panel 200. The display panel 100 is connected to the first connecting wall 221 of the back panel 200, and the middle frame 300 is connected to the third connecting wall 223 of the back panel 200.

[0032] The back panel 200 and display module provided in this application embodiment have a support portion 220 provided along the edge of the main body 210 of the back panel 200. The support portion 220 includes a first connecting wall 221, a second connecting wall 222, and a third connecting wall 223. The first connecting wall 221, the second connecting wall 222, and the third connecting wall 223 are connected sequentially to form a U-shaped groove 201. The opening of the U-shaped groove 201 faces the inside of the back panel 200. When the back panel is applied to the display module, the display panel 100 is connected to the first connecting wall 221, and the middle frame 300 is connected to the third connecting wall 223. Since the middle frame 300 does not need to support the display panel 100, there is no need to worry about the plastic middle frame being too weak and deforming. Therefore, a plastic middle frame can be used in the display module, achieving compatibility with plastic middle frames and helping to reduce production costs. In addition, the back panel 200 of this application adopts a U-shaped groove 201 structure along its edge, which has higher strength than the traditional L-shaped structure and can significantly enhance the rigidity of the whole machine.

[0033] In some embodiments of this application, the first connecting wall 221 has a stepped structure, including a first stepped surface 2211 and a second stepped surface 2212, with the first stepped surface 2211 located above the second stepped surface 2212. The display panel 100 is connected to the first stepped surface 2211, and a gap 101 is provided between the display panel 100 and the second stepped surface 2212. The inner side of the middle frame 300 is provided with a shielding part 301, which at least partially extends into the gap 101. By providing a shielding part 301 on the inner side of the middle frame 300 and making the shielding part 301 at least partially extend into the gap 101 between the display panel 100 and the second stepped surface 2212, the gap can be cleverly concealed using the shielding part 301, making the appearance of the display module more aesthetically pleasing.

[0034] Optionally, the inner side of the middle frame 300 is further provided with a connecting portion 302, which is located below the shielding portion 301. The second connecting wall 222 of the back plate 200 is located between the connecting portion 302 and the shielding portion 301, and the connecting portion 302 is connected to the third connecting wall 223. It can be understood that because the inner side of the middle frame 300 is provided with the shielding portion 301 and the connecting portion 302, the middle frame 300 of this application forms an F-shaped groove structure in its cross-section. Compared with the middle frame 300 structure with a U-shaped groove 201 in some technologies, the structural strength of the middle frame 300 of this application is improved.

[0035] Optionally, the middle frame 300 can be glued to the third connecting wall 223 or connected by screws 401. In other words, the middle frame 300 and the third connecting wall 223 can be connected by adhesive or screws 401, and the specific choice can be made according to actual needs.

[0036] For example, the middle frame 300 is bonded to the outer side of the third connecting wall 223. Alternatively, as shown in Figures 2, 9, and 11, a boss 2231 can be provided on the inner side of the third connecting wall 223, the third connecting wall 223 has a threaded hole 2232 extending to the boss 2231, the middle frame 300 has a through hole 303, and the third connecting wall 223 and the middle frame 300 are connected by screws 401 that pass through the through hole 303 and the threaded hole 2232 in sequence. Specifically, as shown in Figures 9 and 11, the through hole 303 is provided on the connecting part 302, and the third connecting wall 223 and the connecting part 302 are connected by screws 401 that pass through the through hole 303 and the threaded hole 2232 in sequence, thereby realizing the connection between the back plate 200 and the middle frame 300. The inner side of the third connecting wall 223 refers to the side of the third connecting wall 223 located inside the U-shaped groove 201, and the outer side of the third connecting wall 223 refers to the side of the third connecting wall 223 located outside the U-shaped groove 201.

[0037] It is understandable that when the middle frame 300 is connected to the third connecting wall 223 by screws 401, a boss 2231 is provided on the inner side of the third connecting wall 223. The boss 2231 serves as a clearance to prevent the screws 401 from protruding and hitting the components located above the third connecting wall 223 (such as diffuser plate 700 or reflector 800).

[0038] In some embodiments of this application, the display panel 100 is connected to the outer side of the first connecting wall 221, and the inner side of the first connecting wall 221 is provided with an anti-wear member 102; the display module also includes an optical film 500, which is located between the display panel 100 and the back plate 200, and is connected to the inner side of the third connecting wall 223. The inner side of the first connecting wall 221 refers to the side of the first connecting wall 221 located within the U-shaped groove 201, and the outer side of the first connecting wall 221 refers to the side of the first connecting wall 221 located outside the U-shaped groove 201.

[0039] Among them, the optical film 500 is used to improve the backlight effect of the display panel 100. The optical film 500 can be a polarizing film for adjusting the polarization effect of light, an anti-reflection film for improving the brightness of light, a diffusion film for improving the uniformity of light, or a filter film for filtering out stray light, etc., and different backlight effects can be adjusted according to the different types.

[0040] It is understandable that by setting the anti-wear component 102, the friction between the optical film 500 and the back plate 200 or between the optical film 500 and the display panel 100 can be reduced, thereby reducing the risk of the optical film 500 being scratched by the back plate 200 or by the optical film 500 and the display panel 100.

[0041] Optionally, the display panel 100 is bonded to the outer side of the first connecting wall 221, that is, the display panel 100 is fixedly connected to the outer side of the first connecting wall 221 by the first adhesive 402. Optionally, the anti-wear component 102 is made of rubber or silicone material, for example, the anti-wear component 102 can be a rubber strip, silicone strip, rubber block or silicone block.

[0042] As shown in Figures 3, 5, 7, 9, and 11, the display module also includes a light source 600 and a diffuser plate 700. The diffuser plate 700 is located between the display panel 100 and the back plate 200 and is connected to the inner side of the third connecting wall 223. An optical film 500 is connected to the side of the diffuser plate 700 facing the display panel 100, and the light source 600 is disposed on the side of the main body 210 of the back plate 200 facing the diffuser plate 700. The light source 600 is used to emit light, and can be an LED lamp (e.g., a mini LED lamp) or other types of lamps. The diffuser plate 700 is used to diffuse the light emitted by the light source 600 to form uniform light, thereby improving the color uniformity of the displayed image.

[0043] Optionally, the optical film 500 is bonded to the side of the diffuser plate 700 facing the display panel 100. That is, the optical film 500 can be fixedly connected to the side of the diffuser plate 700 facing the display panel 100 by a second adhesive 403 (e.g., double-sided tape).

[0044] Optionally, the display module also includes a reflective sheet 800. The main body 210 of the back plate 200 is recessed in a direction away from the diffuser plate 700 to form an accommodating cavity 202. The reflective sheet 800 is disposed in the accommodating cavity 202, and the light source 600 is connected to the reflective sheet 800. The reflective sheet 800 can be a thin film or layer made of a high reflectivity material. When the light emitted by the light source 600 reaches the reflective sheet 800, it will be fully reflected to the display panel 100, improving light utilization and helping to provide high-efficiency backlight to the display panel 100.

[0045] In existing technologies, the diffuser plate and optical film are typically first mounted onto the back plate, then the middle frame is fixed to the back plate using back-locking screws, and finally the display panel is glued to the middle frame to complete the assembly of the display module. This existing assembly method suffers from low production efficiency because the middle frame and back plate are fixed with back-locking screws, which are difficult to manufacture. Furthermore, the fine debris generated during screw tightening can enter the module, causing foreign matter defects and requiring rework. In this application, when the back plate 200 and the middle frame 300 are fixedly connected by screws 401, they can be pre-processed (that is, the screw-locking process 401 is brought forward). When locking the screws 401, the back plate 200 can be flipped to change the original back screw 401 into a front screw 401, which can greatly improve production efficiency. In addition, by bringing the screw-locking process 401 forward, the fine debris or foreign objects generated during screw-locking can be cleaned. After cleaning, the reflector 800, light source 600, diffuser 700 and optical film 500 are sequentially installed into the back plate 200. Finally, the display panel 100 is connected and fixed to the first connecting wall 221 on the back plate 200 to complete the assembly of the display module. This can effectively prevent foreign objects from entering the module and solve the problems of low production efficiency of back screw-locking and foreign objects entering the module.

[0046] In some embodiments of this application, as shown in Figures 3, 4, 6, 8, and 10, the display module further includes a rear shell 900 with an opening, a back plate 200 at least partially disposed within the rear shell 900, a display panel 100 covering the opening of the rear shell 900, and a mid-frame 300 disposed on the sides of the display panel 100, the back plate 200, and the rear shell 900. By using the rear shell 900 to completely cover the rear side of the back plate 200 (i.e., the side of the back plate 200 facing away from the display panel 100), this application renders the back plate 200 a non-exterior component, eliminating the need for surface treatment and saving on painting processes while avoiding aesthetic defects.

[0047] This application also provides a display device, which includes a display module. The specific structure of the display module is as described in the above embodiments. Since this display device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, and will not be described in detail here.

[0048] This display device can be any electronic product with display function, including but not limited to televisions, smartphones, tablets, laptops, smart weighing scales, in-vehicle displays, or e-book readers.

[0049] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0050] The backplane, display module, and display device provided in the embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A back panel (200) includes a main body (210) and a support (220) disposed on the edge of the main body (210). The support (220) includes a first connecting wall (221), a second connecting wall (222), and a third connecting wall (223). The first connecting wall (221), the second connecting wall (222), and the third connecting wall (223) are connected in sequence to form a U-shaped groove (201). The opening of the U-shaped groove (201) faces the inside of the back panel. The third connecting wall (223) is connected to the main body (210).

2. A display module, wherein, The device includes a display panel (100), a middle frame (300), and a back plate (200) as described in claim 1. The back plate (200) is disposed on the back side of the display panel (100), and the middle frame (300) is disposed on the side of the display panel (100) and the back plate (200). The display panel (100) is connected to the first connecting wall (221) of the back plate (200), and the middle frame (300) is connected to the third connecting wall (223) of the back plate (200).

3. The display module according to claim 2, wherein, The first connecting wall (221) is a stepped structure, including a first stepped surface (2211) and a second stepped surface (2212), with the first stepped surface (2211) located above the second stepped surface (2212); The display panel (100) is connected to the first step surface (2211), and a gap (101) is provided between the display panel (100) and the second step surface (2212). The inner side of the middle frame (300) is provided with a shielding part (301), and the shielding part (301) extends at least partially into the gap (101).

4. The display module according to claim 3, wherein, The inner side of the middle frame (300) is also provided with a connecting part (302), the connecting part (302) is located below the shielding part (301), the second connecting wall (222) of the back plate (200) is located between the connecting part (302) and the shielding part (301), and the connecting part (302) is connected to the third connecting wall (223).

5. The display module according to any one of claims 2 to 4, wherein, The middle frame (300) is bonded to the third connecting wall (223) or connected by screws (401).

6. The display module according to claim 5, wherein, The inner side of the third connecting wall (223) is provided with a boss (2231), the third connecting wall (223) is provided with a threaded hole (2232) and the threaded hole (2232) extends to the boss (2231), the middle frame (300) is provided with a through hole (303), and the third connecting wall (223) and the middle frame (300) are connected by screws (401) that pass through the through hole (303) and the threaded hole (2232) in sequence.

7. The display module according to claim 6, wherein, The inner side of the middle frame (300) is provided with a connecting part (302), the through hole (303) is provided on the connecting part (302), and the third connecting wall (223) is connected to the connecting part (302) by screws (401) that are sequentially inserted into the through hole (303) and the threaded hole (2232).

8. The display module according to claim 5, wherein, The middle frame (300) is bonded to the outer side of the third connecting wall (223).

9. The display module according to claim 2, wherein, The display panel (100) is connected to the outer side of the first connecting wall (221), and the inner side of the first connecting wall (221) is provided with a wear-resistant part (102); The display module further includes an optical film (500) located between the display panel (100) and the back plate (200), and the optical film (500) is connected to the inner side of the third connecting wall (223).

10. The display module according to claim 9, wherein, The wear-resistant part (102) is made of rubber or silicone.

11. The display module according to claim 10, wherein, The wear-resistant component (102) is a rubber strip, a silicone strip, a rubber block, or a silicone block.

12. The display module according to claim 9, wherein, The display panel (100) is bonded to the outer side of the first connecting wall (221).

13. The display module according to claim 9, wherein, The optical film (500) is a polarizing film, an anti-reflection film, a diffusion film, or a filter film.

14. The display module according to claim 9, wherein, The display module further includes a light source (600) and a diffuser plate (700). The diffuser plate (700) is located between the display panel (100) and the back plate (200) and is connected to the inner side of the third connecting wall (223). The optical film (500) is connected to the side of the diffuser plate (700) facing the display panel (100), and the light source (600) is disposed on the side of the main body (210) of the back plate (200) facing the diffuser plate (700).

15. The display module according to claim 14, wherein, The optical film (500) is bonded to the side of the diffuser plate (700) facing the display panel (100).

16. The display module according to claim 14, wherein, The light source (600) is an LED lamp.

17. The display module according to claim 14, wherein, The display module further includes a reflector (800), the main body (210) of the back plate (200) is recessed in a direction away from the diffuser plate (700) to form an accommodating cavity (202), the reflector (800) is disposed in the accommodating cavity (202), and the light source (600) is connected to the reflector (800).

18. The display module according to any one of claims 2-4 and 9-17, wherein, The display module further includes a rear shell (900) with an opening, the back plate (200) is at least partially disposed in the rear shell (900), the display panel (100) covers the opening of the rear shell (900), and the middle frame (300) is disposed on the side of the display panel (100), the back plate (200) and the rear shell (900).

19. A display device comprising the display module according to any one of claims 2 to 18.

20. The display device according to claim 19, wherein, The display device is an electronic product with display function, such as a television, smartphone, tablet computer, laptop computer, smart weighing scale, vehicle display, or e-book reader.

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