Liquid crystal display screen backlight assembly convenient to overhaul

Abstract

The embodiment of the utility model provides a liquid crystal display screen backlight assembly convenient to overhaul, and relates to the technical field of backlight assemblies. The liquid crystal display screen backlight assembly convenient to overhaul comprises a frame, an edge sealing structure, a light source assembly and a backlight assembly body. The backlight assembly body is installed in the frame, and the edge sealing structure packages the backlight assembly body in the frame. A first mounting part is arranged on the frame, and the light source assembly is detachably connected with the first mounting part. The light source assembly can be independently detached from the frame by detaching the connecting piece between the light source assembly and the first mounting part. Compared with the prior art, the backlight assembly has the advantages that the maintenance process is simplified, the maintenance efficiency is improved, meanwhile, the potential damage risk caused by improper disassembly to the backlight assembly body is reduced, and after replacement or maintenance is completed, the normal function of the backlight assembly can be recovered only by reinstalling a new or repaired light source assembly on the first installation part.

Description

Technical Field

[0001] This utility model relates to the field of backlight assembly technology, specifically to a liquid crystal display backlight assembly that is easy to maintain. Background Technology

[0002] Backlighting is a key component widely used in display devices, typically providing a uniform light source to enhance screen visibility. Its main structure includes a light source, light guide plate, reflector, diffuser, backplate, and support frame. The light source emits the initial light, the light guide plate distributes the light evenly across the entire display area, the reflector improves light utilization efficiency by reflecting light, the diffuser further optimizes the uniformity and softness of the light, and the backplate and frame provide overall structural support and fixation.

[0003] However, in actual use, if the backlight component's light source malfunctions, such as reduced brightness or complete failure, the repair process is often quite complex. Replacing the faulty light source typically requires a complete disassembly of the backlight assembly, involving the removal of components such as the light guide plate, reflector, backplate, and frame. After replacing the light source, these components must be reassembled in reverse order. This entire process is not only time-consuming and labor-intensive, but also prone to damage to components or decreased assembly precision due to improper operation, thus affecting the backlight performance. Therefore, traditional backlight component designs are inconvenient for light source maintenance and urgently need improvement to enhance maintenance efficiency and reliability. Utility Model Content

[0004] According to an embodiment of the present invention, a liquid crystal display backlight assembly that is easy to maintain is provided to address the problems mentioned in the background section.

[0005] In a first aspect, this utility model provides a liquid crystal display backlight assembly that is easy to maintain.

[0006] The easily maintainable LCD backlight assembly includes: a frame, an edge sealing structure, a light source assembly, and a backlight assembly body; the backlight assembly body is installed inside the frame, and the edge sealing structure encapsulates the backlight assembly body within the frame; a first mounting portion is provided on the frame, and the light source assembly is detachably connected to the first mounting portion.

[0007] Preferably, the backlight assembly body includes a back plate, a reflective sheet, a light guide plate, a diffuser sheet, and a prism sheet. The back plate is attached to the reflective sheet, the reflective sheet is attached to the light guide plate, the light guide plate is attached to the diffuser sheet, and the diffuser sheet is attached to the prism sheet.

[0008] Preferably, the backlight assembly body further includes a protective film, which is bonded to the prism sheet.

[0009] Preferably, the light source assembly includes a mounting shell, a second mounting part, and a light source; the second mounting part is fixedly installed inside the mounting shell, and the light source is installed on the second mounting part; the first mounting part has a slot for the second mounting part to be inserted into, the first mounting part has a sliding groove, a limit block is provided in the sliding groove, and the mounting shell has an L-shaped notch.

[0010] One or more technical solutions provided in this application have at least the following technical effects or advantages:

[0011] This utility model provides a convenient backlight assembly for LCD displays. During use, if the backlight assembly malfunctions, such as insufficient brightness or complete failure of the light source, requiring replacement or repair, the light source assembly can be independently detached from the frame by disassembling the connector between the light source assembly and the first mounting part. Since the backlight assembly body is fixedly encapsulated with the frame through the edge-sealing structure, there is no need to disassemble or adjust internal components such as the light guide plate and reflector, thus simplifying the repair process, improving maintenance efficiency, and reducing the potential risk of damage to the backlight assembly body due to improper disassembly. After replacement or repair, simply reinstall the new or repaired light source assembly onto the first mounting part to restore the normal function of the backlight assembly.

[0012] It should be understood that the description in this utility model description section is not intended to limit the key or essential features of the embodiments of this utility model, nor is it intended to restrict the scope of this utility model. Other features of this utility model will become readily apparent from the following description. Attached Figure Description

[0013] The above and other features, advantages, and aspects of the various embodiments of the present invention will become more apparent from the accompanying drawings and the following detailed description. In the drawings, the same or similar reference numerals denote the same or similar elements, wherein:

[0014] Figure 1 A three-dimensional structural schematic diagram of a liquid crystal display backlight assembly for easy maintenance according to an embodiment of the present invention is shown.

[0015] Figure 2 An exploded view of the backlight assembly of a liquid crystal display screen, which is convenient for maintenance, according to an embodiment of the present invention is shown.

[0016] Figure 3 A schematic diagram of the structure of a liquid crystal display backlight assembly with the light source component separated from the frame, according to an embodiment of the present invention, is shown.

[0017] Figure 4A schematic diagram of the frame and edge sealing structure connection of a liquid crystal display backlight assembly for easy maintenance according to an embodiment of the present invention is shown.

[0018] Figure 5 A partial structural schematic diagram of a liquid crystal display backlight assembly for easy maintenance according to an embodiment of the present invention is shown.

[0019] Figure 6 A partial structural schematic diagram of the first mounting portion of a liquid crystal display backlight assembly for easy maintenance, according to an embodiment of the present invention, is shown.

[0020] Figure 7 A partial structural schematic diagram of the light source assembly of a liquid crystal display backlight assembly for easy maintenance, according to an embodiment of the present invention, is shown.

[0021] Explanation of reference numerals in the attached figures

[0022] 1-Frame, 11-First mounting part, 12-Slide groove, 13-Limiting block, 14-Slot, 2-Edge sealing structure, 3-Light source assembly, 31-Mounting shell, 311-L-shaped notch, 32-Second mounting part, 33-Light source, 4-Backlight assembly body, 41-Back plate, 42-Reflective sheet, 43-Light guide plate, 44-Diffuser sheet, 45-Prism sheet, 46-Protective film. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0024] Furthermore, the term "and / or" in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0025] like Figures 1 to 7As shown, a backlight assembly for a liquid crystal display screen that is easy to maintain includes a frame 1, an edge sealing structure 2, a light source assembly 3, and a backlight assembly body 4. The backlight assembly body 4 is fixedly installed inside the frame 1. The edge sealing structure 2 is arranged around the outer periphery of the backlight assembly body 4 and cooperates with the frame 1 to encapsulate the backlight assembly body 4 within the frame 1, ensuring structural stability and sealing. The frame 1 is provided with a first mounting part 11, which can specifically be a mounting groove or a boss structure formed on the side wall of the frame 1. The light source assembly 3 is connected to the first mounting part 11 by a detachable connection method, such as by bolts, clips, or slide rails, to facilitate disassembly and assembly.

[0026] If the backlight assembly malfunctions during use, such as insufficient brightness or complete failure of the light source, and replacement or repair of the light source assembly 3 is required, the light source assembly 3 can be independently removed from the frame 1 by disassembling the connector between the light source assembly 3 and the first mounting part 11. At this time, since the backlight assembly body 4 is fixedly encapsulated with the frame 1 by the sealing structure 2, it is unnecessary to disassemble or adjust components such as the light guide plate and reflector inside the backlight assembly body 4. This simplifies the repair process, improves repair efficiency, and reduces the potential risk of damage to the backlight assembly body 4 due to improper disassembly. After replacement or repair, simply reinstall the new or repaired light source assembly 3 onto the first mounting part 11 to restore the normal function of the backlight assembly.

[0027] In this embodiment, the light source component 3 preferably adopts an LED light strip or a similar independently replaceable light source structure. Its connection design with the first mounting part 11 further optimizes the modularity, making the maintenance of the light source more convenient, and does not affect the overall optical performance and structural stability of the backlight component.

[0028] In this embodiment, the backlight assembly body 4 includes a back plate 41, a reflective sheet 42, a light guide plate 43, a diffuser sheet 44, and a prism sheet 45. The back plate 41 is attached to the reflective sheet 42, the reflective sheet 42 is attached to the light guide plate 43, the light guide plate 43 is attached to the diffuser sheet 44, and the diffuser sheet 44 is attached to the prism sheet 45. Specifically, the backplate 41, serving as the bottom support structure of the backlight assembly body 4, is typically made of metal or high-strength plastic to provide overall rigidity; the reflective sheet 42 covers the upper surface of the backplate 41 and is used to reflect the light emitted by the light source assembly 3 towards the light guide plate 43 to improve light utilization; the light guide plate 43 is disposed above the reflective sheet 42 and is used to convert the lateral light from the light source assembly 3 into a uniform surface light source; the diffuser 44 covers the upper surface of the light guide plate 43 and is used to further scatter light to enhance the uniformity of light; the prism sheet 45 is located above the diffuser 44 and optimizes the light emission angle through its microstructure design, thereby improving display brightness and viewing angle.

[0029] In use, the light emitted by the light source assembly 3 enters through the side of the light guide plate 43 and, through the synergistic effect of the reflective sheet 42, light guide plate 43, diffuser 44, and prism sheet 45, forms a uniform and high-brightness backlight effect to supply the LCD screen. When the light source assembly 3 malfunctions and needs to be replaced or repaired, it is only necessary to remove the light source assembly 3 from the first mounting part 11 of the frame 1, while the back plate 41, reflective sheet 42, light guide plate 43, diffuser 44, and prism sheet 45 of the backlight assembly body 4 remain in a fitted state and fixed inside the frame 1, without the need to disassemble or adjust its internal structure. This design effectively avoids the cumbersome operation of disassembling multiple optical components during the maintenance of traditional backlight assemblies, which not only shortens the maintenance time but also reduces the risk of optical performance degradation or component damage caused by repeated disassembly and assembly, thereby significantly improving the maintenance convenience and service life of the backlight assembly.

[0030] In this embodiment, the backlight assembly body 4 further includes a protective film 46, which is attached to the prism sheet 45. Specifically, the protective film 46 covers the upper surface of the prism sheet 45 and is typically made of a thin film material with high transparency and strong wear resistance, such as polyester film (PET) or polycarbonate (PC). Its main function is to provide additional protection for the prism sheet 45, preventing its surface from being scratched, contaminated by dust, or subjected to external mechanical damage during assembly, use, or transportation, thereby maintaining the optical performance of the prism sheet 45 and the overall display effect of the backlight assembly.

[0031] In use, the light emitted by the light source assembly 3 is processed sequentially by the light guide plate 43, diffuser 44, and prism sheet 45 before being output to the liquid crystal display screen through the protective film 46. The protective film 46 further enhances the durability and stability of the backlight assembly body 4 without affecting light transmittance. When the light source assembly 3 malfunctions and needs repair or replacement, the operator only needs to remove the light source assembly 3 from the first mounting part 11 of the frame 1. The back plate 41, reflector 42, light guide plate 43, diffuser 44, prism sheet 45, and protective film 46 in the backlight assembly body 4 remain attached and fixed within the frame 1, without the need to disassemble or separate these optical components. This design not only simplifies the replacement process of the light source assembly 3 but also effectively reduces the potential impact of external factors on the internal optical structure during maintenance through the protective film 46, thereby improving the reliability and service life of the backlight assembly.

[0032] In this embodiment, the light source assembly 3 includes a mounting shell 31, a second mounting portion 32, and a light source 33. The second mounting portion 32 is fixedly installed inside the mounting shell 31, and the light source 33 is mounted on the second mounting portion 32. Specifically, the mounting shell 31 is a rigid shell structure, for example, made of aluminum alloy or engineering plastic, used to protect the internal light source 33 and facilitate connection with the frame 1. The second mounting portion 32 can be a support plate or bracket structure fixed to the inner wall of the mounting shell 31, and fixedly connected to the mounting shell 31 by screws or welding. The light source 33 is preferably an LED strip or a point light source, which is mounted on the second mounting portion 32 by snap-fit ​​or adhesive to provide the light source required for backlighting. The first mounting portion 11 has a slot 14 for the second mounting portion 32 to be inserted. The shape and size of the slot 14 are adapted to the second mounting portion 32 to ensure positioning accuracy during insertion. The first mounting part 11 is also provided with a sliding groove 12, and a limiting block 13 is slidably disposed in the sliding groove 12. The limiting block 13 can move in a certain direction in the sliding groove 12. The mounting shell 31 is provided with an L-shaped notch 311, which includes a long side and a short side that are perpendicular to each other, forming a limiting fit structure.

[0033] When the light source assembly 3 needs to be disassembled, first, move the limiting block 13 so that it slides along the slide groove 12 to one end. At this time, the limiting block 13 corresponds to the short side of the L-shaped notch 311 and is released from the limiting constraint of the long side. Then, by pulling the mounting shell 31, the second mounting part 32 can be pulled out from the slot 14, thereby removing the light source assembly 3 and replacing or repairing the light source 33 on the light source assembly 3. During installation, align the mounting shell 31 with the first mounting part 11 and insert the second mounting part 32 into the slot 14. At this time, the limiting block 13 enters the long side area of ​​the L-shaped notch 311. Then, move the limiting block 13 so that it slides along the slide groove 12 to the short side position perpendicular to the long side of the L-shaped notch 311. Through the limiting action between the limiting block 13 and the short side of the L-shaped notch 311, the fixed installation of the light source assembly 3 is completed. It should be noted that the limiting block 13 is in close contact with the inner wall of the L-shaped notch 311. With the help of the friction between the limiting block 13 and the L-shaped notch 311, the limiting block 13 remains stable in the fixed position, preventing loosening or displacement during use.

[0034] Furthermore, the length of the slide 12 and the movement range of the limiting block 13 are designed to ensure that the limiting block 13 has clear positioning feedback in both unlocked and locked states. For example, by setting stop structures or spring reset mechanisms at both ends of the slide 12, the convenience and reliability of operation can be further improved. In addition, the dimensions of the long and short sides of the L-shaped notch 311 can be optimized according to the specifications of the limiting block 13 to ensure a stable connection while facilitating manual operation. This detachable design, which uses the slide 12, limiting block 13, and L-shaped notch 311, allows the assembly and disassembly of the light source assembly 3 to be carried out without the need for complex tools, significantly improving the efficiency of replacing the light source 33, while ensuring the structural stability after installation.

[0035] The specific embodiments described above do not constitute a limitation on the scope of protection of this utility model. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A liquid crystal display backlight assembly that is easy to maintain, characterized in that, include: The frame (1), the edge sealing structure (2), the light source assembly (3) and the backlight assembly body (4) are installed inside the frame (1), and the edge sealing structure (2) encapsulates the backlight assembly body (4) inside the frame (1); a first mounting part (11) is provided on the frame (1), and the light source assembly (3) is detachably connected to the first mounting part (11).

2. The easily maintainable liquid crystal display backlight assembly according to claim 1, characterized in that, The backlight assembly body (4) includes a back plate (41), a reflective sheet (42), a light guide plate (43), a diffuser (44), and a prism sheet (45). The back plate (41) is attached to the reflective sheet (42), the reflective sheet (42) is attached to the light guide plate (43), the light guide plate (43) is attached to the diffuser (44), and the diffuser (44) is attached to the prism sheet (45).

3. The easily maintainable liquid crystal display backlight assembly according to claim 2, characterized in that, The backlight assembly body (4) also includes a protective film (46), which is attached to the prism sheet (45).

4. The easily maintainable liquid crystal display backlight assembly according to claim 1, characterized in that, The light source assembly (3) includes a mounting shell (31), a second mounting part (32), and a light source (33); the second mounting part (32) is fixedly installed inside the mounting shell (31), and the light source (33) is installed on the second mounting part (32); the first mounting part (11) has a slot (14) for the second mounting part (32) to be inserted, the first mounting part (11) has a sliding groove (12), the sliding groove (12) has a limit block (13), and the mounting shell (31) has an L-shaped notch (311).

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