Backlight module and display device

Abstract

The utility model provides a backlight module and a display device, the backlight module comprises a first back plate and a second back plate, the first back plate and the second back plate are mutually connected and arranged in parallel, the first back plate forms a first light mixing space, the second back plate forms a second light mixing space, and the depth of the first light mixing space is greater than that of the second light mixing space; the rear shell is arranged on the side, away from the second light mixing space, of the second back plate, the rear shell is connected with the first back plate, and the first back plate, the second back plate and the rear shell define a containing space. The backlight module can solve the problem that the thickness of the display device is increased.

Description

TECHNICAL FIELD

[0001] The utility model relates to display technical field especially relates to a backlight module and display device. BACKGROUND

[0002] Most of the display devices produced in the current market adopt the traditional direct type module form. The direct type backlight module wins the extensive recognition of the market by virtue of its advantages in ultra-thin design, multi-zone control, super-bright display effect and wide color gamut and other high-end technologies. However, the power board, mainboard, loudspeaker, WIFI and other electroacoustic module components of the display device are fixed to the bottom of the back plate, and need to be packaged by means of the outwardly extending rear shell structure. Such design undoubtedly increases the overall thickness of the display device, which is contrary to the current market demand for light and thin display devices. SUMMARY

[0003] The backlight module and display device provided by the embodiments of the present application can solve the problem of increased thickness of the display device.

[0004] The backlight module provided by the embodiments of the present application comprises:

[0005] A first back plate and a second back plate are connected to each other and arranged side by side, the first back plate forms a first light mixing space, the second back plate forms a second light mixing space, and the depth of the first light mixing space is greater than the depth of the second light mixing space;

[0006] A rear shell is arranged on the side of the second back plate away from the second light mixing space, the rear shell is connected to the first back plate, and the first back plate, the second back plate and the rear shell form an accommodating space.

[0007] The embodiments of the present application also provide a display device comprising:

[0008] A backlight module, which is the backlight module described above;

[0009] A liquid crystal module is arranged on the light emitting side of the backlight module.

[0010] In the backlight module and display device provided in this application embodiment, the backlight module includes a first back plate and a second back plate, which are interconnected and arranged side by side, each independently forming a first light mixing space and a second light mixing space. This helps improve the adjustment efficiency of the light output uniformity of the backlight module, making the light distribution more precise and controllable. It is worth noting that the first light mixing space is deeper than the second light mixing space. This difference aims to optimize the light mixing effect and facilitate the subsequent component layout. Based on this, the back cover is disposed on the side of the second back plate away from the second light mixing space, forming a compact accommodating space together with the first back plate. Due to the smaller depth of the second light mixing space, the first and second back plates are located on the side away from their respective light mixing spaces. The second back plate has a certain inward design relative to the first back plate. This layout not only expands the volume of the accommodating space, facilitating the installation of key components such as electroacoustic module components, but also ensures the compactness of the backlight module structure, avoiding unnecessary thickness accumulation. In summary, the embodiments of this application can effectively improve the performance of the backlight module and reduce the thickness of the display device. 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 the structure of the first backplate and the second backplate in an embodiment of this application.

[0014] Figure 3 This is a schematic diagram of a second structure of the backlight module provided in an embodiment of this application.

[0015] Figure 4 This is a schematic diagram of the structure of the display device provided in the embodiments of this application. Detailed Implementation

[0016] 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.

[0017] This application provides a backlight module and a display device, which will be described in detail below with reference to the accompanying drawings.

[0018] Please see Figure 1 , Figure 1 This is a schematic diagram of a first structure of a backlight module provided in an embodiment of this application.

[0019] This application provides a backlight module 10, which is a key component in a liquid crystal display device and is responsible for providing uniform and bright light to ensure that the liquid crystal module 20 can display images correctly.

[0020] The backlight module 10 includes a first back plate 11, a second back plate 12, and a rear cover 13. The first back plate 11 and the second back plate 12 are connected to each other and arranged side by side. The first back plate 11 forms a first light mixing space 111, and the second back plate 12 forms a second light mixing space 121. The first light mixing space 111 or the second light mixing space 121 is a space inside the backlight module 10 used to mix light to ensure uniform light distribution. The first light mixing space 111 and the second light mixing space 121 are independent of each other and can be adjusted separately, which helps to improve the adjustment efficiency and thus improve the quality of the displayed image.

[0021] The first backplate 11 and the second backplate 12 can form the same light emission direction. That is, the first backplate 11 has a first opening, which is connected to the first light mixing space 111, and the second backplate 12 has a second opening, which is connected to the second light mixing space 121. The first opening and the second opening have the same orientation.

[0022] The depth of the first light mixing space 111 is greater than the depth of the second light mixing space 121. This means that the light mixing distance (OD) provided by the first backplate 11 and the second backplate 12 is different, which facilitates subsequent component layout. Based on this, the rear shell 13 is located on the side of the second backplate 12 away from the second light mixing space 121. The rear shell 13 is connected to the first backplate 11, and its end face can be nearly flush with the end face of the first backplate 11. The first backplate 11, the second backplate 12, and the rear shell 13 enclose and form the receiving space 14. In other words, because the depth of the second light mixing space 121 is smaller, the first backplate 11 and the second backplate 12 are located on the side away from their respective light mixing spaces. The second backplate 12 has a certain inward design relative to the first backplate 11. This layout not only expands the volume of the receiving space 14, facilitating the installation of key components such as the electroacoustic module assembly 30, but also ensures the compactness of the backlight module 10 structure, avoiding unnecessary thickness accumulation. In summary, the embodiments of this application can effectively improve the performance of the backlight module 10 and reduce the thickness of the display device 100.

[0023] Based on the specific specifications and layout requirements of the accommodating space 14, the widths of the first backplate 11 and the second backplate 12 are set to be adjustable. This is intended to adapt to diverse application needs while ensuring the rationality of the structural design and maintaining the optical performance of the backlight module 10. Specifically, in some embodiments, the width W1 of the first backplate 11 is designed to be greater than the width W2 of the second backplate 12, so that the main area of ​​the backlight module 10 (i.e., the portion covered by the first backplate 11) can maintain its predetermined optical characteristics. Meanwhile, the second backplate 12, as an independent component, not only has the function of independently adjusting the light distribution effect but also forms a certain volume of accommodating space 14, facilitating the installation and integration of other components. This design scheme optimizes the performance of the backlight module 10 while also enhancing the flexibility and practicality of the overall structure.

[0024] In this embodiment, the first back plate 11 and the second back plate 12 can be integrally formed, and their manufacturing process can be achieved through stamping. This design not only ensures the integrity of the structure but also simplifies the manufacturing process and improves production efficiency.

[0025] Please see Figure 2 , Figure 2 This is a schematic diagram of the structure of the first back plate and the second back plate according to an embodiment of this application. In some embodiments, the second back plate 12 includes a second flat plate portion 122, a third wing plate 123 and a fourth wing plate 124. The third wing plate 123 and the fourth wing plate 124 are respectively inclinedly disposed on both sides of the second flat plate portion 122. The second flat plate portion 122, the third wing plate 123 and the fourth wing plate 124 surround to form a second light mixing space 121. The second light mixing space 121 is a key area for light mixing and transmission in the backlight module 10, and its design directly affects the quality of the final displayed image.

[0026] The third wing plate 123 and the fourth wing plate 124 are respectively inclined from both sides of the second flat plate portion 122, forming a V-shaped structure. This design not only increases the depth and capacity of the second light mixing space 121, but also allows light to be effectively guided and mixed when entering this space. Through the inclined arrangement of the third wing plate 123 and the fourth wing plate 124, the transmission effect of light in the backlight module 10 is significantly improved. These two wing plates act like "light guides," guiding light from different directions to the same direction, thereby improving light utilization and uniformity. This design not only helps reduce light loss and light leakage, but also improves the brightness and contrast of the displayed image.

[0027] The third wing plate 123 is also connected to the first back plate 11, which facilitates the connection between the second back plate 12 and the first back plate 11, further enhancing the structural stability of the backlight module 10.

[0028] Please refer toFigure 3 , Figure 3 This is a schematic diagram of a second structure of the backlight module provided in an embodiment of this application. The backlight module 10 also includes a second backlight source 161 and a second reflector 162. The second backlight source 161 refers to the light source used to generate light in the backlight module 10, and typically includes multiple lamp boards, each lamp board including a circuit board and multiple light-emitting diodes (e.g., LEDs, mini LEDs, or other light-emitting diode arrays). The second reflector 162 is used to reflect light to improve the light efficiency and uniformity of the backlight module 10.

[0029] The second backlight 161 and the second reflector 162 are both disposed within the second light mixing space 121, working together to achieve more efficient light management and utilization. The second backlight 161 is responsible for generating uniform and bright light. The second backlight 161 is connected to the second flat plate portion 122, ensuring stable light transmission and distribution.

[0030] The second reflective sheet 162 has a second clearance hole corresponding to the second backlight 161, ensuring that the light from the second backlight 161 can directly pass through the reflective sheet without being blocked. This clearance hole design not only maintains the continuity and uniformity of light but also avoids dark areas or light spots caused by the reflective sheet blocking, thereby further improving the quality of the displayed image. The second reflective sheet 162 is disposed on the second flat plate portion 122 and extends towards the third wing plate 123 and the fourth wing plate 124, which not only increases the reflective area but also allows the light to be more fully reflected and mixed in the light mixing space. The second reflective sheet 162 has high reflectivity, which can effectively reflect the light from the second backlight 161 back to the light mixing space, reducing light loss and improving light utilization.

[0031] Please continue reading. Figure 2 The first backplate 11 includes a first flat plate 112, a first wing plate 113, and a second wing plate 114. The first wing plate 113 and the second wing plate 114 are respectively inclinedly disposed on both sides of the first flat plate 112. The first flat plate 112, the first wing plate 113, and the second wing plate 114 surround and form a first light-mixing space 111. The end of the second wing plate 114 away from the first flat plate 112 is connected to the end of the third wing plate 123 away from the second flat plate 122. It can be understood that the second wing plate 114 and the third wing plate 123 form a "V"-shaped connection.

[0032] Please continue reading. Figure 3The backlight module 10 also includes a first backlight 151 and a first reflective sheet 152. The first backlight 151 and the first reflective sheet 152 are both disposed in the first light mixing space 111. The first backlight 151 is connected to the first flat plate portion 112. The first reflective sheet 152 is provided with a first clearance hole corresponding to the first backlight 151. The first reflective sheet 152 is disposed on the first flat plate portion 112 and extends toward the first wing plate 113 and the second wing plate 114.

[0033] As described above, the first backlight 151 in the first backplate 11 and the second backlight 161 in the second backplate 12 can be adjusted independently, and the uniformity adjustment is more convenient through the independent first mixing space 111 and second mixing space 121.

[0034] The first backplate 11, the first backlight 151, and the first reflector 152 have similar structures and similar technical effects to the second backplate 12, the second backlight 161, and the second reflector 162 mentioned above, and will not be described in detail here.

[0035] The rear shell 13 includes a first extension 131 and a second extension 132, which are portions of the rear shell 13 that extend in different directions and are used to connect to or support other components.

[0036] The first extension 131 is located on the side of the second back panel 12 away from the second light mixing space 121 and is connected to the first back panel 11. This design not only enhances the structural stability of the backlight module 10, but also creates a tight connection between the first back panel 11 and the second back panel 12, helping to reduce light leakage and dark areas. The presence of the first extension 131 provides a robust rear support for the backlight module 10, ensuring its stability and reliability during long-term use.

[0037] The second extension 132 is provided along the thickness direction of the backlight module 10, providing additional support and fixing points for the backlight module 10, which helps to maintain the shape stability of the backlight module 10 during assembly and use, and prevents deformation or damage caused by external forces.

[0038] The backlight module 10 also includes a diffuser plate 17 and / or an optical film 18. The diffuser plate 17 is a transparent or translucent plate used to uniformly distribute light and is usually placed above the backlight to eliminate light spots and shadows. The optical film 18 is a thin film used to improve light distribution, enhance brightness, improve contrast, or achieve other optical effects.

[0039] The diffuser plate 17 and / or optical film 18 are connected at both ends to the first back plate 11 and the second back plate 12, respectively, and are disposed on the first light mixing space 111 and the second light mixing space 121. When both the diffuser plate 17 and the optical film 18 are present, the optical film 18 is disposed on the side of the diffuser plate 17 away from the first light mixing space 111 and the second light mixing space 121. The diffuser plate 17 facilitates uniform light distribution as it passes through, thereby eliminating light spots and shadows and improving the uniformity and clarity of the displayed image. The optical film 18 is disposed on the side of the diffuser plate 17 away from the first light mixing space 111 and the second light mixing space 121 to further improve light distribution and enhance brightness. The optical film 18 typically has specific optical properties, such as a brightness enhancement film, a polarizing film, or an anti-reflective film. These properties can adjust the direction and intensity of light propagation as needed to achieve the best display effect.

[0040] Please see Figure 4 , Figure 4 This is a schematic diagram of the structure of the display device provided in the embodiments of this application.

[0041] This application provides a display device 100, which can be any display device 100 that displays either moving (e.g., video) or fixed (e.g., still images), and whether it displays text or images. More specifically, it is contemplated that the above embodiment can be implemented in or associated with a variety of electronic display devices 100, such as (but not limited to) mobile phones, wireless display devices 100, personal data assistants, handheld or portable computers, GPS receivers / navigators, cameras, video players, camcorders, game consoles, watches, clocks, calculators, television monitors, flat panel displays, computer monitors, automotive displays (e.g., odometer displays, etc.), navigators, cockpit controllers and / or displays, displays of camera views (e.g., displays of rearview cameras in vehicles), electronic photographs, electronic billboards or signs, projectors, architectural structures, packaging and aesthetic structures (e.g., displays of images of a piece of jewelry), etc. Exemplarily, the above-described display device 100 can be a television set (e.g., an LCD television, etc.).

[0042] The display device 100 includes a backlight module 10 and a liquid crystal module 20, the liquid crystal module 20 being disposed on the light-emitting side of the backlight module 10. The liquid crystal module 20 is a component composed of a liquid crystal layer, polarizer, electrodes, etc., used to control whether light passes through, thereby displaying an image. The backlight module 10 is the same as described above.

[0043] The backlight module 10 provides a uniform and efficient backlight source, and the liquid crystal module 20 can more accurately control whether light passes through, thereby achieving a more delicate and clearer image display. Because the liquid crystal module 20 and the backlight module 10 work closely together, the loss and interference of light during transmission are reduced, the brightness and contrast of the display device 100 are improved, and the energy consumption of the display device 100 is reduced and its service life is extended.

[0044] In some embodiments, the display device 100 further includes an electroacoustic module assembly 30, which is disposed within the receiving space 14. The electroacoustic module assembly 30 refers to a collection of components responsible for sound input / output functions, typically including a power board, a motherboard, a speaker, a WIFI module, etc., used to realize the sound playback, network communication, and other functions of the display device 100. The power board is a circuit board that provides stable power to the display device 100. The motherboard is the core circuit board of the display device 100, responsible for processing various signals and controlling the operation of various components. The speaker is a device that converts electrical signals into sound. The WIFI module is used to realize network connectivity and communication for the display device 100.

[0045] In some embodiments, the display device 100 further includes a front frame 40, which includes a first bent portion 41 and a second bent portion 42. The first bent portion 41 is disposed in the non-display area of ​​the liquid crystal module 20, which does not affect the user's viewing experience and can effectively fix and protect the liquid crystal module 20. The second bent portion 42 is connected to the rear shell 13 of the backlight module 10. Specifically, the second bent portion 42 can be connected to the second extension portion 132 of the rear shell 13, and the second bent portion 42 is tightly connected to the rear shell 13 of the backlight module 10, further enhancing the structural stability of the display device 100.

[0046] In the backlight module 10 and display device 100 provided in this application embodiment, the backlight module 10 includes a first back plate 11 and a second back plate 12, which are interconnected and arranged side by side, each independently forming a first light mixing space 111 and a second light mixing space 121. This helps to improve the debugging efficiency of the light output uniformity of the backlight module 10, making the light distribution more precise and controllable. It is worth noting that the first light mixing space 111 is designed to be deeper than the second light mixing space 121. This difference aims to optimize the light mixing effect and provide convenience for subsequent component layout. Based on this, the back cover 13 is disposed on the side of the second back plate 12 away from the second light mixing space 121, and together with the first back plate 11, it forms a compact accommodating space 14. Since the second back plate 12 has a certain inward design relative to the first back plate 11, this layout not only expands the volume of the accommodating space 14, facilitating the installation of key components such as the electroacoustic module assembly 30, but also ensures the compactness of the backlight module 10 structure and avoids unnecessary thickness accumulation. In summary, the embodiments of this application can effectively improve the performance of the backlight module 10 and reduce the thickness of the display device 100.

[0047] 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.

[0048] In the description of this application, 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 technical features indicated. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more features.

[0049] The backlight 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 descriptions of the embodiments above are only for the purpose of helping to understand this application. Furthermore, those skilled in the art will recognize that, based on the ideas of this application, there will be changes in the specific implementation methods and application scope. 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 first backplate and a second backplate are connected to each other and arranged side by side. The first backplate forms a first light mixing space, and the second backplate forms a second light mixing space. The depth of the first light mixing space is greater than the depth of the second light mixing space. The rear shell is disposed on the side of the second back plate away from the second light mixing space. The rear shell is connected to the first back plate, and the first back plate, the second back plate, and the rear shell together form an accommodating space.

2. The backlight module according to claim 1, characterized in that, The second back panel includes a second flat plate, a third wing plate, and a fourth wing plate. The third wing plate and the fourth wing plate are respectively inclinedly disposed on both sides of the second flat plate. The second flat plate, the third wing plate, and the fourth wing plate surround to form the second light mixing space. The third wing plate is connected to the first back panel.

3. The backlight module according to claim 2, characterized in that, It also includes a second backlight and a second reflector. The second backlight and the second reflector are both disposed in the second light mixing space. The second backlight is connected to the second flat plate. The second reflector is provided with a second clearance hole corresponding to the second backlight. The second reflector is disposed on the second flat plate and extends toward the third wing and the fourth wing.

4. The backlight module according to claim 2, characterized in that, The first back panel includes a first flat plate, a first wing plate, and a second wing plate. The first wing plate and the second wing plate are respectively inclinedly disposed on both sides of the first flat plate. The first flat plate, the first wing plate, and the second wing plate surround to form the first light mixing space. The end of the second wing plate away from the first flat plate is connected to the end of the third wing plate away from the second flat plate.

5. The backlight module according to claim 4, characterized in that, It also includes a first backlight and a first reflector. The first backlight and the first reflector are both disposed in the first light mixing space. The first backlight is connected to the first flat plate. The first reflector is provided with a first clearance hole corresponding to the first backlight. The first reflector is disposed on the first flat plate and extends toward the first wing plate and the second wing plate.

6. The backlight module according to any one of claims 1 to 5, characterized in that, The back cover includes a first extension and a second extension. The first extension is disposed on the side of the second back plate away from the second light mixing space. The first extension is connected to the first back plate. The second extension is disposed along the thickness direction of the backlight module.

7. The backlight module according to any one of claims 1 to 5, characterized in that, It also includes a diffuser plate and / or an optical film, the two ends of which are connected to the first back plate and the second back plate, respectively, and the diffuser plate and / or optical film are disposed on the first light mixing space and the second light mixing space.

8. A display device, characterized in that, include: A backlight module, wherein the backlight module is the backlight module according to any one of claims 1 to 7; A liquid crystal module, wherein the liquid crystal module is disposed on the light-emitting side of the backlight module.

9. The display device according to claim 8, characterized in that, It also includes an electroacoustic module assembly disposed within the accommodating space.

10. The display device according to claim 8, characterized in that, It also includes a front frame, which includes a first bent portion and a second bent portion. The first bent portion is disposed in the non-display area of ​​the liquid crystal module, and the second bent portion is connected to the rear shell of the backlight module.

Images