Backlight module and display device

Abstract

The application discloses a backlight module and a display device, and relates to the technical field of display, which aims to at least partially solve the technical problem of low connection stability caused by the bonding of the glue frame and the bending structure through double-sided adhesive. The backlight module comprises a back plate assembly and a glue frame. The back plate assembly comprises a bottom plate, a side plate and a top plate which are sequentially connected in a bending mode. The bottom plate and the top plate are located on the same side of the side plate. The surface of the side plate away from the bottom plate is provided with a protruding part. The glue frame is connected with the side plate and located on the side of the side plate away from the bottom plate. The glue frame is provided with a groove. The protruding part is attached to the groove.

Description

Technical Field

[0001] This application relates to the field of display technology, and in particular to a backlight module and display device. Background Technology

[0002] Liquid crystal display devices typically include a backlight module and a liquid crystal panel. The backplate of the backlight module has a bent structure, and a plastic frame is attached to the outside of the bent structure to act as a barrier to prevent the liquid crystal panel from being easily impacted by external forces.

[0003] In related technologies, the frame is often manually glued to the outside of the bent structure using double-sided tape, which results in low stability of the connection between the frame and the bent structure. Utility Model Content

[0004] This application provides a backlight module and display device to at least partially solve the technical problem of low connection stability caused by bonding the frame and the bent structure with double-sided adhesive in the related art.

[0005] To achieve the above objectives, in a first aspect, some embodiments of this application provide a backlight module, including a backplate assembly and a frame. The backplate assembly includes a bottom plate, a side plate, and a top plate that are bent and connected in sequence. The bottom plate and the top plate are located on the same side of the side plate, and the side plate has a protrusion on the surface facing away from the bottom plate. The frame is connected to the side plate and is located on the side of the side plate facing away from the bottom plate. The frame has a groove. The protrusion is attached to the groove.

[0006] In some embodiments, the protrusion and the side plate are integrally formed.

[0007] In some embodiments, the side plate protrudes in a direction away from the base plate to form the protrusion.

[0008] In some embodiments, the protrusion extends in the same direction as the length of the side plate.

[0009] In some embodiments, the protrusion is connected to the side plate by solder.

[0010] In some embodiments, the protrusion includes a rivet.

[0011] In some embodiments, the area of ​​the protrusion at the end away from the side plate is larger than the area of ​​the protrusion at the end near the side plate.

[0012] In some embodiments, the area of ​​the protrusion gradually increases along the direction of the side plate away from the bottom plate.

[0013] In some embodiments, the backlight module further includes a light source and a light guide plate disposed on the base plate, wherein the light emission direction of the light source is toward the light incident surface of the light guide plate, and the light emission surface of the light guide plate is located on the side of the light guide plate away from the base plate.

[0014] Secondly, some embodiments of this application provide a display device including the backlight module described in any embodiment of the first aspect.

[0015] In the backlight module provided in this application embodiment, since the side plate has a protrusion on the side away from the bottom plate, and the frame has a groove that matches the protrusion, the protrusion is attached to the groove. This can effectively ensure the connection stability between the frame and the side plate and improve the structural stability of the backlight module.

[0016] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0017] 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 only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0019] Figure 1 This is a cross-sectional view of the backlight module provided by related technologies; Figure 2 This is a cross-sectional view of a backlight module provided in some embodiments of this application; Figure 3 This is a schematic diagram of the structure of a backplane assembly according to some embodiments of this application; Figure 4 This is a cross-sectional structural schematic diagram of a backlight module provided in some other embodiments of this application; Figure 5 This is a schematic diagram of the structure of a backplane assembly according to other embodiments of this application; Figure 6 These are cross-sectional views of a display device provided in some embodiments of this application; Figure 7 This is a cross-sectional view of a display device provided in other embodiments of this application. Detailed Implementation

[0020] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings. The described technical solutions are for illustrative purposes only and should not be construed as limiting the scope of protection of this application.

[0021] 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," "second," and similar words do not indicate any order, quantity, or importance, but are only used to distinguish different technical features. The term "multiple" and similar words indicate two or more unless otherwise expressly defined.

[0022] "A and / or B" includes the following three combinations: A only, B only, and a combination of A and B.

[0023] The use of “for” in this application implies an open and inclusive language, which does not exclude the applicability to or configuration of devices to perform additional tasks or steps.

[0024] In this application, the term "example" is used to mean "used as an example, illustration, or illustration." Any embodiment described as "example" in this application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The following description is provided to enable any person skilled in the art to make and use this application.

[0025] The various embodiments of this application are similar, and features from different embodiments and / or different examples can be combined with each other.

[0026] In related technologies, such as Figure 1 As shown, the backlight module 100' includes a back plate 10' and a frame 20'. The back plate 10' has a bent structure, and the frame 20' is bonded to the outer side of the bent structure with double-sided adhesive 30'. However, this often results in low connection stability between the frame 20' and the bent structure, low manual assembly efficiency, and difficulty in effectively ensuring assembly yield.

[0027] Based on this, some embodiments of this application provide a backlight module and display device to at least partially solve the technical problem of low connection stability caused by the bonding of the frame 20' and the bent structure with double-sided adhesive 30' in the related art.

[0028] like Figures 2 to 7 As shown, the backlight module 100 includes a back panel assembly 10 and a frame 20. The back panel assembly 10 includes a bottom plate 11, a side plate 12, and a top plate 13 that are bent and connected in sequence. The bottom plate 11 and the top plate 13 are located on the same side of the side plate 12. The side plate 12 has a protrusion 14 on the surface away from the bottom plate 11. The frame 20 is connected to the side plate 12 and is located on the side of the side plate 12 away from the bottom plate 11. The frame 20 has a groove K. The protrusion 14 is attached to the groove K.

[0029] For the backlight module 100 provided in this application embodiment, since the side plate 12 has a protrusion 14 on the side away from the bottom plate 11, and the frame 20 has a groove K that matches the protrusion 14, so that the protrusion 14 is attached to the groove K, the connection stability between the frame 20 and the side plate 12 can be effectively guaranteed, and the structural stability of the backlight module 100 can be improved.

[0030] The backlight module and display device provided in this application will be described below with reference to specific embodiments, which will be elaborated in detail below.

[0031] Some embodiments of this application provide a backlight module 100, such as Figures 2 to 5 As shown, the backlight module 100 includes a back panel assembly 10 and a frame 20.

[0032] The back panel assembly 10 includes a bottom plate 11, a side plate 12, and a top plate 13, which are bent and connected in sequence. The bottom plate 11 and the top plate 13 are located on the same side of the side plate 12. For example, the bottom plate 11 and the top plate 13 both extend along a first direction X, and the side plate 12 extends along a second direction Y. The second direction Y can be the thickness direction of the back panel assembly 10, wherein the first direction X and the second direction Y are perpendicular to each other. The bottom plate 11, the side plate 12, and the top plate 13 form a U-shaped bending structure, which can effectively ensure the structural strength of the back panel assembly 10.

[0033] In addition, a protrusion 14 is provided on the surface of the side plate 12 facing away from the bottom plate 11. The frame 20 is connected to the side plate 12 and is located on the side of the side plate 12 facing away from the bottom plate 11. The frame 20 has a groove K, and the protrusion 14 is attached to the groove K.

[0034] In this embodiment, since the side plate 12 has a protrusion 14 on the side away from the bottom plate 11, and the frame 20 has a groove K that matches the protrusion 14, the protrusion 14 is attached to the groove K. This can effectively ensure the connection stability between the frame 20 and the side plate 12 and improve the structural stability of the backlight module 100.

[0035] It is worth noting that the protrusion 14 is fitted into the groove K, which means there is no gap between the protrusion 14 and the groove K. The groove K can effectively wrap the protrusion 14, thereby ensuring the connection stability between the frame 20 and the side plate 12.

[0036] In some examples, the base plate 11, side plates 12, and top plate 13 can be integrally formed, thus ensuring good structural strength of the back plate composed of the base plate 11, side plates 12, and top plate 13. As an example, the back plate can be made of metal materials, such as cold-rolled steel sheet or galvanized steel sheet. Furthermore, the back plate can be formed by bending a single sheet using a bending machine to create the U-shaped bending structure.

[0037] When the side panel 12 is made of metal, a protrusion 14 is provided on the surface of the side panel 12 facing away from the base plate 11. The protrusion 14 provides adhesive gripping points for the frame 20, allowing the frame 20 to be directly connected to the side of the side panel 12 through injection molding, thus enabling the protrusion 14 to be attached to the groove K. In this case, the frame 20 and the back panel can form an integrated glue-metal structure. The injection molding process can meet automation requirements, ensuring the connection stability between the frame 20 and the back panel while also improving the assembly efficiency and yield of the backlight module 100.

[0038] In some embodiments, please refer to Figure 2 The protrusion 14 and the side plate 12 are integrally formed.

[0039] This design ensures good connection stability between the protrusion 14 and the side plate 12, thus preventing the protrusion 14 from easily breaking on the surface of the side plate 12 and causing the connection between the frame 20 and the side plate 12 to fail.

[0040] As an example, the protrusion 14 and the side plate 12 can be made of the same material and manufactured by a one-piece molding process.

[0041] In some embodiments, please continue reading Figure 2 The side plate 12 protrudes in a direction away from the bottom plate 11 to form a protrusion 14.

[0042] In this case, the side panel 12 forms a protrusion 14 by partially protruding, which can ensure the lightweight of the side panel 12 and help reduce the weight of the backlight module 100.

[0043] As an example, the side plate 12 can be formed into a protrusion 14 by stamping.

[0044] In some embodiments, please refer to Figure 3The protrusion 14 extends in the same direction as the length direction Z of the side plate 12. The length direction Z of the side plate 12 is perpendicular to the first direction X and the second direction Y.

[0045] This configuration, by extending the protrusion 14 along the length direction Z of the side plate 12, allows the protrusion 14 to have a relatively large volume, thereby increasing the contact area between the protrusion 14 and the groove K, and improving the connection stability between the side plate 12 and the frame 20; on the other hand, it also allows the protrusion 14 to form a reinforcing rib, thereby improving the structural strength of the side plate 12.

[0046] In some examples, multiple protrusions 14 may be provided, and the multiple protrusions 14 are arranged at Z-intervals along the length direction of the side plate 12. In addition, the multiple protrusions 14 may be arranged in a single row or multiple rows as needed, and this application embodiment does not limit this.

[0047] In some examples, the cross-section of the protrusion 14 in the direction perpendicular to the second direction Y can be circular, square, triangular, etc., and the embodiments of this application do not limit this.

[0048] In some embodiments, please refer to Figure 4 and Figure 5 The protrusion 14 is connected to the side plate 12 by solder. That is, the protrusion 14 and the side plate 12 are connected by welding. This ensures good connection stability between the protrusion 14 and the side plate 12, and also facilitates the direct welding of the protrusion 14 to the side plate 12 for existing back plates, thereby improving the utilization rate of the back plate in related technologies.

[0049] In some examples, the solder can be tin-zinc alloy solder, as long as it can achieve a stable connection between the protrusion 14 and the side plate 12. This application does not restrict the choice of materials.

[0050] In some embodiments, please continue reading Figure 4 and Figure 5 The protrusion 14 includes a rivet.

[0051] In this case, by selecting rivets as the protrusion 14, the structure has good stability and relatively reasonable size, so as to facilitate the welding between the protrusion 14 and the side plate 12.

[0052] In some embodiments, the area of ​​the end of the protrusion 14 away from the side plate 12 is larger than the area of ​​the end of the protrusion 14 near the side plate.

[0053] This design allows for a relatively large contact area between the end of the protrusion 14 furthest from the side plate 12 and the bottom of the groove K, thereby improving the connection stability between the side plate 12 and the frame 20. Furthermore, this structure effectively prevents the side plate 12 from easily separating from the frame 20 when they are pulled in the second direction Y.

[0054] In some embodiments, the area of ​​the protrusion 14 gradually increases along the direction of the side plate 12 away from the bottom plate 11.

[0055] This design allows the outer periphery of the protrusion 14 to have a relatively large surface area, thereby increasing the contact area between the protrusion 14 and the groove K, which in turn helps to improve the connection stability between the side plate 12 and the frame 20.

[0056] In some examples, the area of ​​the protrusion 14 can increase linearly or non-linearly along the direction of the side plate 12 away from the bottom plate 11.

[0057] In some embodiments, the backlight module 100 further includes a light source 31 and a light guide plate 32 disposed on a base plate 11. The light emission direction of the light source 31 is towards the light incident surface of the light guide plate 32, and the light emission surface of the light guide plate 32 is located on the side of the light guide plate 32 away from the base plate 11. The base plate 11 can provide good support for the light source 31 and the light guide plate 32. The light emitted by the light source 31 is converted into a surface light source after passing through the light guide plate 32, thereby providing uniform light to the liquid crystal panel and improving the display effect of the display device 1000. In addition, the top plate 13 can be used to support the liquid crystal panel, thus effectively ensuring the distance between the liquid crystal panel and the light emission surface of the light guide plate 32.

[0058] In some examples, the light source 31 may include a circuit board and LEDs electrically connected to the circuit board, the circuit board being able to drive the LEDs to emit light.

[0059] In some examples, the light-emitting surface of the light guide plate 32 may also be provided with an optical film 33. The optical film 33 may include at least one of a brightness enhancement film and a diffusion film. The light emission effect of the backlight module 100 can be improved by means of the optical film 33.

[0060] In some examples, the surface of the optical film 33 facing away from the light guide plate 32 is flush with the surface of the top plate 13 facing away from the bottom plate 11. This facilitates the subsequent assembly of the liquid crystal panel.

[0061] Some embodiments of this application provide a display device, such as... Figure 6 and Figure 7 As shown, the display device 1000 includes the backlight module 100 described in any of the above embodiments.

[0062] Since it includes the backlight module 100, the display device 1000 has the technical effects of the backlight module 100 described above, which will not be repeated here.

[0063] In some examples, please refer to [link / reference]. Figure 6 and Figure 7 The display device 1000 also includes a liquid crystal panel 200 located on the light-emitting side of the backlight module 100. The liquid crystal panel 200 includes a first polarizer 2031, an array substrate 201, a color filter substrate 202, and a second polarizer 2032 stacked together. The polarization directions of the first polarizer 2031 and the second polarizer 2032 are perpendicular.

[0064] In some examples, the array substrate 201 has an integrated circuit chip 2011 on the side near the frame 20.

[0065] 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 backlight module, characterized in that, include: A backplate assembly includes a bottom plate, a side plate, and a top plate that are bent and connected in sequence. The bottom plate and the top plate are located on the same side of the side plate, and the surface of the side plate opposite to the bottom plate has a protrusion. A plastic frame, connected to the side plate and located on the side of the side plate opposite to the bottom plate, the plastic frame having a groove; The protrusion is attached to the groove.

2. The backlight module according to claim 1, characterized in that, The protrusion and the side plate are integrally formed.

3. The backlight module according to claim 2, characterized in that, The side plate protrudes in a direction away from the bottom plate to form the protrusion.

4. The backlight module according to claim 2, characterized in that, The protrusion extends in the same direction as the length of the side plate.

5. The backlight module according to claim 1, characterized in that, The protrusion is connected to the side plate by solder.

6. The backlight module according to claim 5, characterized in that, The protrusion includes a rivet.

7. The backlight module according to any one of claims 1-6, characterized in that, The area of ​​the protrusion at the end furthest from the side plate is greater than the area of ​​the protrusion at the end closest to the side plate.

8. The backlight module according to claim 7, characterized in that, Along the direction of the side plate away from the bottom plate, the area of ​​the protrusion gradually increases.

9. The backlight module according to any one of claims 1-6, characterized in that, It also includes a light source and a light guide plate disposed on the base plate, wherein the light emission direction of the light source is toward the light incident surface of the light guide plate, and the light emission surface of the light guide plate is located on the side of the light guide plate away from the base plate.

10. A display device, characterized in that, Includes the backlight module as described in any one of claims 1-9.

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