Backlight module with improved brightness

Abstract

This utility model discloses a backlight module for improving brightness, relating to the technical field of backlight module technology. It includes a middle frame, inside which an upper diffuser, a prism sheet, a lower diffuser, a light guide plate, a reflective sheet, and a backlight source are sequentially installed. A back plate is installed on the back of the middle frame, and a front frame is fixedly mounted on the front of the middle frame. The upper part of the back plate has a hollowed-out area. This backlight module, by setting a stepped hollowed-out area on the upper part of the back plate, achieves a balance between brightness improvement and structural stability. This special shape design satisfies the requirement of increased light transmission through the hollowed-out area, thereby improving the brightness of the backlight module, while also effectively ensuring the structural strength of the entire backlight module. It avoids sacrificing structural stability for the sake of simply increasing brightness, significantly improving the overall performance of the backlight module.

Description

Technical Field

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

[0002] In traditional backlight module designs, the back panel typically employs a fully enclosed or simply perforated structure. While a fully enclosed back panel provides good structural support and protection, it blocks some light transmission, leading to a reduction in the backlight module's brightness. Conversely, a simply perforated back panel, although increasing light transmission to some extent, often suffers from difficulty in precisely controlling the shape, size, and distribution of the perforations. This can easily introduce uneven light distribution and light leakage while increasing brightness, ultimately affecting the display effect. Utility Model Content

[0003] To address the technical problems existing in the background art, this utility model proposes a backlight module that improves brightness.

[0004] The present invention proposes a backlight module for improving brightness, comprising a middle frame, wherein an upper diffuser sheet, a prism sheet, a lower diffuser sheet, a light guide plate, a reflector sheet and a backlight source are sequentially installed inside the middle frame, a back plate is installed on the back of the middle frame, and a front frame is assembled and fixed on the front of the middle frame, and a hollow area is provided on the upper part of the back plate.

[0005] Furthermore, the upper diffuser sheet and the prism sheet, the prism sheet and the lower diffuser sheet, the lower diffuser sheet and the light guide plate, the light guide plate and the reflector sheet, and the reflector sheet and the backlight are all fixed together by double-sided adhesive.

[0006] Furthermore, the middle frame is assembled and fixed to the backlight and the front frame through a snap-fit ​​structure.

[0007] Furthermore, the locking structure includes several locking protrusions integrally connected to the middle frame and the outer perimeter of the backlight, as well as several locking holes opened on the outer perimeter of the front frame and the inner perimeter of the middle frame. Each locking protrusion has a transition slope on its outer end face. After assembly, the several locking protrusions are locked into the locking holes through the transition slope.

[0008] Furthermore, both the middle frame and the front frame are made of plastic.

[0009] Furthermore, the hollowed-out area on the back panel is designed in a stepped shape to meet the requirement of increasing brightness through hollowing out while also ensuring the structural strength of the entire backlight module.

[0010] The beneficial effects of this utility model are as follows: By setting a stepped hollow area on the upper part of the back plate, this special shape design can not only satisfy the requirement of hollowing out to increase light transmission and thus improve the brightness of the backlight module, but also effectively ensure the structural strength of the entire backlight module. It avoids sacrificing structural stability for the sake of simply pursuing brightness improvement, and achieves a balance between brightness improvement and structural stability, which significantly improves the overall performance of the backlight module. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the disassembled structure of this utility model;

[0012] Figure 2 This is a schematic diagram of the back plate structure in this utility model;

[0013] Figure 3 This is a structural schematic diagram of the present invention from the rear view after assembly;

[0014] Figure 4 This is a schematic diagram showing the split structure of the middle frame and the front frame in this utility model;

[0015] Figure 5 This is a schematic diagram of the assembly structure of the middle frame and the front frame in this utility model.

[0016] In the diagram: 1. Middle frame; 11. Locking protrusion; 12. Transition slope; 2. Upper diffuser; 3. Prism sheet; 4. Lower diffuser; 5. Light guide plate; 6. Reflector; 7. Backlight; 8. Front frame; 81. Locking hole; 9. Back plate; 91. Cutout area. Detailed Implementation

[0017] Reference Figure 1-5 This utility model proposes a backlight module for improving brightness, mainly comprising a middle frame 1, an upper diffuser 2, a prism sheet 3, a lower diffuser 4, a light guide plate 5, a reflector 6, a backlight source 7, a front frame 8, and a back plate 9. These components are combined according to a specific structure and assembly method to achieve the purpose of improving the brightness of the backlight module, as detailed below:

[0018] The middle frame 1 is the main supporting structure of the entire backlight module. Inside it, the upper diffuser 2, prism sheet 3, lower diffuser 4, light guide plate 5, reflector 6, and backlight 7 are installed in sequence. The back plate 9 is installed on the back of the middle frame 1, and the front frame 8 is assembled and fixed on the front.

[0019] The upper diffuser 2 is installed in the frontmost layer inside the middle frame 1 to diffuse light evenly and reduce bright spots and dark spots;

[0020] The prism sheet 3 is installed inside the upper diffuser sheet 2. It focuses light through the prism structure on its surface to improve brightness.

[0021] The lower diffuser 4 is installed inside the prism sheet 3 to further homogenize the light and reduce the non-uniformity of the light.

[0022] The light guide plate 5 is installed inside the lower diffuser plate 4 to guide the light emitted by the backlight 7 to the entire backlight module, ensuring uniform light distribution.

[0023] The reflector 6 is installed inside the light guide plate 5 to reflect the light leaking out from the bottom of the light guide plate 5, thereby improving the utilization rate of light.

[0024] The backlight 7, serving as the light source for the entire backlight module, is installed inside the reflector 6 to provide initial light.

[0025] During installation, the upper diffuser 2 and the prism sheet 3, the prism sheet 3 and the lower diffuser 4, the lower diffuser 4 and the light guide plate 5, the light guide plate 5 and the reflector 6, and the reflector 6 and the backlight 7 are all bonded and fixed with double-sided adhesive to ensure the relative position of each component is stable and to prevent light leakage and loosening of components.

[0026] The front frame 8 is mounted and fixed to the front of the middle frame 1, protecting internal components such as optical films and light guide plates, and also serving a decorative purpose. The front frame 8 and the middle frame 1 are assembled and fixed together via a snap-fit ​​structure. Specifically, the snap-fit ​​structure includes several snap holes 81 integrally connected to the inner circumference of the middle frame 1, and several snap-fit ​​protrusions 11 formed on the outer circumference of the front frame 8. Each snap-fit ​​protrusion 11 has a transition slope 12 on its outer end face to facilitate smooth engagement into the snap holes 81 during assembly. During assembly, align the snap-fit ​​protrusions 11 of the front frame 8 with the snap holes 81 of the middle frame 1, and gently press to complete the assembly.

[0027] The back plate 9 is mounted on the back of the middle frame 1 to support and protect the entire backlight module. The upper part of the back plate 9 has a perforated area 91, which is stepped in shape. This perforation serves both to increase brightness and to maintain the structural strength of the entire backlight module. The back plate 9 is secured to the middle frame 1 using screws, clips, or other suitable connection methods.

[0028] The middle frame 1 and the backlight 7 are also assembled and fixed together using a snap-fit ​​structure. Specifically, the snap-fit ​​structure includes several snap-fit ​​protrusions 11 integrally connected to the outer perimeter of the middle frame 1, and several snap-fit ​​holes 81 formed around the outer perimeter of the backlight 7. Each snap-fit ​​protrusion 11 also has a transition slope 12 on its outer end face. During assembly, align the snap-fit ​​holes 81 of the backlight 7 with the snap-fit ​​protrusions 11 of the middle frame 1, and gently press to complete the assembly.

[0029] Both the middle frame 1 and the front frame 8 are made of plastic, which has the advantages of being lightweight, high-strength, and corrosion-resistant, making it suitable for manufacturing the shell and support structure of the backlight module.

[0030] Finally, it should be noted that the LED strips and other light sources in the backlight 7 generate heat when working. If the heat cannot be dissipated in time, the temperature of the light source will rise, which will affect its luminous efficiency and lifespan. The hollow back plate 9 increases the air circulation area, improves the heat dissipation efficiency, helps to reduce the working temperature of the light source, thereby maintaining its high luminous efficiency and indirectly improving the brightness of the backlight module.

[0031] In a backlight module, uniform light distribution is crucial for improving brightness. The design of the hollowed-out backplate 9 may help reduce the reflection and absorption of light on the surface of the backplate 9, allowing more light to propagate along the expected path, thereby improving the utilization of light and the brightness of the backlight module.

[0032] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A backlight module for improving brightness, characterized in that, The middle frame (1) includes an upper diffuser (2), a prism sheet (3), a lower diffuser (4), a light guide plate (5), a reflector (6), and a backlight (7) installed in sequence inside the middle frame (1). A back plate (9) is installed on the back of the middle frame (1), and a front frame (8) is assembled and fixed on the front of the middle frame (1). A hollow area (91) is provided on the upper part of the back plate (9).

2. The backlight module for improving brightness according to claim 1, characterized in that, The upper diffuser (2) and the prism sheet (3), the prism sheet (3) and the lower diffuser (4), the lower diffuser (4) and the light guide plate (5), the light guide plate (5) and the reflector (6), and the reflector (6) and the backlight (7) are all fixed by double-sided adhesive.

3. The backlight module for improving brightness according to claim 1, characterized in that, The middle frame (1) and the backlight (7) are assembled and fixed together by a snap-fit ​​structure.

4. The backlight module for improving brightness according to claim 3, characterized in that, The locking structure includes several locking protrusions (11) integrally connected around the outer side of the middle frame (1) and the backlight (7), and several locking holes (81) opened around the outer side of the front frame (8) and the inner side of the middle frame (1). Each locking protrusion (11) has a transition slope (12) on its outer end face. After assembly, the several locking protrusions (11) are locked inside the locking holes (81) through the transition slope (12).

5. The backlight module for improving brightness according to claim 1, characterized in that, Both the middle frame (1) and the front frame (8) are made of plastic.

6. The backlight module for improving brightness according to claim 1, characterized in that, The hollow area (91) on the back plate (9) is set in a stepped shape to meet the requirement of increasing brightness through hollowing while also meeting the structural strength of the entire backlight module.

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