Backlight module and display device

Abstract

The utility model provides a backlight module and a display device. The backlight module comprises a backlight source; the reflecting part is arranged on the backlight source; the buckle is connected with the reflecting piece, and the buckle is connected to the backlight source in a clamped mode. The backlight module is high in structural stability.

Description

Technical Field

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

[0002] In existing technologies, display devices include a backlight module and a liquid crystal module. The light generated by the backlight module is used to illuminate the liquid crystal module to display the image. Currently, contrast ratio is an important image quality indicator, and various parties are trying to improve it in different ways. One effective method is to increase the density of backlight zones. Furthermore, the refined design of the backlight module's zones is equally important. The smaller the halo area of ​​each zone, the more concentrated the light energy of the zone, resulting in better contrast.

[0003] As the number of partitions in the backlight module increases, the density of light-emitting units in the backlight module also increases several times, compressing the remaining space in the backlight module. Consequently, the light-diffusing components required to maintain the optical distance (OD), such as reflectors, become difficult to fix due to the space compression, resulting in reduced structural stability. Utility Model Content

[0004] This application provides a backlight module and a display device, wherein the backlight module has high structural stability.

[0005] This application provides a backlight module, including:

[0006] Backlight;

[0007] A reflector, wherein the reflector is disposed on the backlight;

[0008] A buckle is connected to the reflector and is snapped onto the backlight.

[0009] This application also provides a display device including the backlight module described above.

[0010] The backlight module provided in this application includes a backlight source, a reflector, and a clip. The clip is connected to the reflector and is snapped onto the backlight source. Directly fixing the reflector to the backlight source via the clip improves the structural stability of the backlight module. Attached Figure Description

[0011] 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.

[0012] Figure 1 This is a schematic diagram of a first structure of a backlight module provided in an embodiment of this application.

[0013] Figure 2 This is a schematic diagram of a second structure of the backlight module provided in an embodiment of this application.

[0014] Figure 3 for Figure 2 A magnified view of part A.

[0015] Figure 4 This is a schematic diagram of the first structure of a backlight module in the prior art.

[0016] Figure 5 This is a schematic diagram of a second structure for a backlight module in the prior art.

[0017] Figure 6 This is a schematic diagram of a third structure of the backlight module provided in an embodiment of this application.

[0018] Figure 7 This is a schematic diagram of a fourth structure of the backlight module provided in the embodiments of this application.

[0019] Figure 8 for Figure 7 A magnified view of a portion of C.

[0020] Figure 9 for Figure 2 A magnified view of part B. Detailed Implementation

[0021] 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.

[0022] This application provides a backlight module and a display device, the backlight module having high structural stability. The following detailed description is provided in conjunction with the accompanying drawings.

[0023] Please see Figures 1 to 3 , Figure 1 This is a schematic diagram of a first structure of a backlight module provided in an embodiment of this application. Figure 2 This is a schematic diagram of a second structure of the backlight module provided in an embodiment of this application. Figure 3 for Figure 2A magnified view of part A. This application provides a backlight module 100, which includes a backlight source 10, a reflector 20, and a clip 30. The reflector 20 is disposed on the backlight source 10 and can be a three-dimensional structure. The function of the reflector 20 is to convert the point light source or line light source provided by the backlight source 10 into a uniformly distributed surface light source.

[0024] Please see Figure 4 as well as Figure 5 , Figure 4 This is a schematic diagram of the first structure of a backlight module in the prior art. Figure 5 This is a schematic diagram of a second structure of a backlight module in the prior art. In the backlight module 1 of the prior art, the reflector 3 and the backlight 2 are often fixed by bolts or adhesive. Taking adhesive fixing as an example, the light-emitting units such as LEDs in the existing point light source have a high density. If there is too much adhesive, it is easy for the adhesive to overflow, or even overflow onto the light-emitting units, causing the light emitted by the light-emitting units to be absorbed or refracted, resulting in poor display. If there is too little adhesive, it is easy for the connection between the reflector 3 and the backlight 2 to be weak, resulting in a lower yield rate.

[0025] Therefore, please continue reading. Figure 3 This application proposes to use a clip 30 to fix the backlight 10 and the reflector 20. The clip 30 is connected to the reflector 20 and snapped into the backlight 10, replacing the glue fixation in the existing solution, thereby improving the firmness of the connection between the backlight 10 and the reflector 20 and improving the stability of the backlight module 100.

[0026] The reflector 20 can be fabricated onto the backlight 10 using SMT technology.

[0027] Please continue reading. Figure 3 The backlight 10 has a locking hole 11. The buckle 30 has a main body 31 and a first limiting part 32. One end of the main body 31 is connected to the first limiting part 32, and the other end of the main body 31 is connected to the reflector 20. The main body 31 passes through the locking hole 11. The first limiting part 32 abuts against the side of the backlight 10 away from the reflector 20. The first limiting part 32 can prevent the buckle 30 from coming out of the locking hole 11, thereby improving the reliability of the reflector 20 being fixed on the backlight 10.

[0028] Please see Figures 6 to 8 , Figure 6 This is a schematic diagram of a third structure of the backlight module provided in the embodiments of this application. Figure 7 This is a schematic diagram of a fourth structure of the backlight module provided in the embodiments of this application. Figure 8 for Figure 7A zoomed view of the local C. In order to facilitate the body part 31 to be arranged in the card hole 11, the outer surface of the first limiting part 32 is tapered, the top angle 321 of the taper is connected with one end of the body part 31, and the inclined surface 322 of the taper is inclined to the body part 31. The inclined surface 322 plays a guiding role. When the buckle 30 is arranged in the card hole 11, the first limiting part 32 can be deformed radially to pass through the card hole 11, and then the body part 31 is arranged in the card hole 11, thereby fixing the reflecting member 20 on the backlight 10. When the buckle 30 is about to be detached from the card hole 11, the first limiting part 32 abuts against the backlight 10 to resist the detachment of the buckle 30 from the card hole 11.

[0029] The buckle 30 has a second limiting part 33 connected with the body part 31, and the second limiting part 33 abuts against the side of the backlight 10 close to the reflecting member 20. The first limiting part 32 and the second limiting part 33 cooperate with each other to fix the relative position of the buckle 30 and the backlight 10. The second limiting part 33 can be a boss protruding from the body part 31 in the radial direction of the body part 31. Specifically, the backlight 10 has opposite first and second surfaces 14 and 15, the card hole 11 is arranged in the first and second surfaces 14 and 15, the first limiting part 32 can abut against the second surface 15 to resist the buckle 30 from moving further towards the first surface 14, and the second limiting part 33 can abut against the first surface 14 to resist the buckle 30 from moving further towards the second surface 15.

[0030] In the above, the reflecting member 20 is fixed on the backlight 10 by the buckle 30, which not only makes the optical performance of the backlight module 100 more uniform and delicate, but also reduces the complexity of assembly, reduces the use of materials, improves the assembly efficiency, further improves the firmness of the connection, and makes the backlight module 100 not appear abnormal sound and shaking with the increase of use time.

[0031] The backlight 10 includes a back plate 12 and a light source assembly 13, the light source assembly 13 is arranged on the back plate 12, the reflecting member 20 is arranged on the side of the light source assembly 13 away from the back plate 12, and the backlight and the light source assembly 13 jointly form the card hole 11. As can be seen, the buckle 30 is clamped in the card hole 11, which not only fixes the reflecting member 20 on the backlight 10, but also fixes the relative position of the backlight and the light source assembly 13.

[0032] The light source assembly 13 can be a light bar (LB), such as a straight light bar, a U-shaped light bar, a light plate, a fish-tail light bar, etc. The light source assembly 13 includes a circuit board 131 and a light emitting unit 132 disposed on the circuit board 131. The light emitting unit 132 can be a general LED, a mini-LED, or a micro-LED, etc. The circuit board 131 is provided with a plurality of light emitting units 132 arranged in a matrix. The distance between each light emitting unit 132 is equal, which can ensure the uniformity of the light emitted by the light emitting unit 132.

[0033] As described above, the light source assembly 13 is disposed on the back plate 12. The side of the light source assembly 13 away from the back plate 12 or the side of the light source assembly 13 with the light emitting unit 132 is the first surface 14. The side of the back plate 12 away from the light source assembly 13 is the second surface 15.

[0034] Please refer to Figure 9 , Figure 9 for Figure 2 the enlarged view of part B. The reflector 20 includes a plurality of reflection cups 21 connected to each other. The reflection cup 21 includes a plurality of reflection walls 211 connected to each other. The reflection wall 211 is inclined to the circuit board 131. The buckle 30 is connected to the reflection wall 211. The buckle 30 has the function of supporting the reflection wall 211.

[0035] The reflector 20 is disposed on the first surface 14. The plurality of reflection cups 21 correspond to the plurality of light emitting units 132 one by one. Each reflection cup 21 corresponds to a light emitting unit 132. The plurality of reflection walls 211 surround the light emitting unit 132 to adjust the light emitting direction and the light emitting uniformity.

[0036] In this case, the reflection cup 21 can further include a bottom wall 212 connected to the plurality of reflection walls 211. The bottom wall 212 is provided with a clearance hole to allow the light emitting unit 132 to pass through. The bottom wall 212 is connected to the circuit board 131.

[0037] Further, the number of buckles 30 is a plurality. One buckle 30 is connected to the reflection walls 211 of two adjacent reflection cups 21. This can improve the connection efficiency and the space utilization. The relative position of the reflection cup 21 and the light emitting unit 132 is accurately fixed by the buckle 30, which effectively shapes the light and avoids the situation that the backlight module 100 makes abnormal sound and shakes as the use time increases.

[0038] The reflector 20 and / or the buckle 30 are injection molded parts, which are easy to manufacture and can reduce costs.

[0039] The reflector 20 and the buckle 30 are integrally formed. The reflector 20 and the buckle 30 are not easy to separate, which improves the stability of the connection.

[0040] The display device can be a liquid crystal display device. The display device further comprises a housing and a liquid crystal module, the liquid crystal module and the backlight module 100 are arranged in the housing, and the light generated by the backlight module 100 is used to illuminate the liquid crystal module. Since the backlight module 100 adopts all the technical solutions of the above-mentioned embodiments, the display device at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here.

[0041] In some cases, the display device can be a liquid crystal panel, electronic paper, a liquid crystal television, a liquid crystal display, a digital photo frame, a mobile phone, a tablet computer, or any product or component with display function.

[0042] In the above embodiments, the description of each embodiment has its own focus, and the parts not described in detail in a certain embodiment can be referred to the related description of other embodiments.

[0043] In the description of the present application, the terms "first", "second" are only for descriptive purpose, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more features.

[0044] The backlight module and the display device provided by the embodiments of the present application are described in detail above. In this paper, specific examples are applied to describe the principles and implementation modes of the present application. The above description of the embodiments is only used to help understand the present application. Meanwhile, for those skilled in the art, according to the idea of the present application, the specific implementation mode and application range can be changed, and the above description should not be understood as the limitation of the present application.

Claims

1. A backlight module, characterized in that, The application relates to a backlight module. The backlight module comprises: a backlight source with a clamping hole; a reflection member arranged on the backlight source; 2. The backlight module of claim 1, wherein, a clamping buckle connected with the reflection member, the clamping buckle is clamped on the backlight source, the clamping buckle has a main body part and a first limiting part, one end of the main body part is connected with the first limiting part, the other end of the main body part is connected with the reflection member, the main body part is arranged in the clamping hole, and the first limiting part is in abutment with one side of the backlight source away from the reflection member.

3. The backlight module of claim 1, wherein, The outer surface of the first limiting part is conical, the top angle of the conical shape is connected with one end of the main body part, and the inclined surface of the conical shape is inclined to the main body part.

4. The backlight module of claim 1, wherein, The clamping buckle has a second limiting part connected with the main body part, and the second limiting part is in abutment with one side of the backlight source close to the reflection member.

5. The backlight module according to any one of claims 1 to 4, wherein, The backlight source comprises a back plate and a light source assembly, the light source assembly is arranged on the back plate, the reflection member is arranged on one side of the light source assembly away from the back plate, and the backlight and the light source assembly jointly form the clamping hole.

6. The backlight module of claim 5, wherein, The reflection member comprises a plurality of reflection cups, the reflection cup comprises a plurality of reflection walls connected with each other, and the clamping buckle is connected with the reflection wall.

7. The backlight module according to any one of claims 1 to 4, wherein, The number of the clamping buckles is plural, one clamping buckle is connected with the reflection walls of two adjacent reflection cups.

8. The backlight module of claim 7, wherein, The reflection member and / or the clamping buckle is an injection molding part.

9. A display device, characterized by comprising: The reflection member and the clamping buckle are integrally formed. The backlight module comprises the backlight module in any one of claims 1 to 8.

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