一种结构加强背光模组

By using a snap-fit ​​structure design for the middle frame, front frame, and back cover, combined with the injection molding of the back cover and the plastic frame, the problem of deformation of the iron back cover during assembly is solved, thus achieving structural reinforcement and improved optical performance of the backlight module.

CN224519449UActive Publication Date: 2026-07-17DONGGUAN XINHUATAI PHOTOELECTRIC TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
DONGGUAN XINHUATAI PHOTOELECTRIC TECH CO LTD
Filing Date
2025-07-16
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

The metal back cover of the backlight module is prone to deformation during assembly, which affects the positional relationship and optical performance of optical components, resulting in uneven light distribution and reduced display effect.

Method used

The middle frame, front frame, and rear cover are connected by a snap-fit ​​structure. The rear cover is integrally molded with the frame to enhance structural strength. The staggered distribution of inner and outer layer snap-fit ​​protrusions and snap-fit ​​holes ensures that no deformation occurs during assembly.

Benefits of technology

It effectively prevents back cover deformation, ensures the positional stability of optical components, ensures the accuracy of light propagation path and distribution, improves display effect and backlight module quality, and extends service life.

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Abstract

本实用新型公开了一种结构加强背光模组，涉及背光模组技术领域，包括中框，所述中框的正面、背面分别通过卡合结构对应装配前框和后盖，所述后盖内部一体连接有胶框，在中框、前框、后盖所围成的区域内，依次固定有上扩散片、棱镜片、下扩散片、导光板、反射片以及光源条。该背光模组通过将后盖与胶框采用注塑工艺一体成型，显著增强了后盖的结构强度，在装配过程中能有效抵御来自各方向的力，极大程度避免了后盖因受力而发生形变的情况，保障了背光模组内部光学部件位置的稳定性，进而确保光线传播路径和分布的准确性，有效提升了背光模组的显示效果和整体质量，延长了背光模组的使用寿命。
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Claims

1. A structure-reinforced backlight module, characterized by, The middle frame (1) is included. The front and back sides of the middle frame (1) are respectively fitted with the front frame (2) and the back cover (3) through a snap-fit ​​structure. The back cover (3) is integrally connected with a plastic frame (31). In the area enclosed by the middle frame (1), the front frame (2), and the back cover (3), the upper diffuser (4), the prism sheet (5), the lower diffuser (6), the light guide plate (7), the reflector (8), and the light source strip (9) are fixed in sequence.

2. The structure-reinforced backlight module according to claim 1, wherein, The snap-fit ​​structure includes several inner snap-fit ​​protrusions (101) integrally connected to the surface of the middle frame (1), several outer snap-fit ​​holes (201) opened around the front frame (2), several inner snap-fit ​​holes (32) opened around the surface of the rear cover (3), and several outer snap-fit ​​protrusions (33) integrally connected to the surface of the rear cover (3).

3. The structure-reinforced backlight module according to claim 2, wherein, The inner layer locking protrusion (101) engages inside the inner layer locking hole (32), and the outer layer locking protrusion (33) engages inside the outer layer locking hole (201).

4. The structure-reinforced backlight module according to claim 2, wherein, Several inner layer card holes (32) and several outer layer card protrusions (33) are distributed in an alternating pattern on the surface of the back cover (3).

5. The structure-reinforced backlight module according to claim 2, wherein, Both the inner layer positioning protrusion (101) and the outer layer positioning protrusion (33) have beveled surfaces at their top ends.

6. The structure-reinforced backlight module according to claim 5, wherein, The inclined surfaces of the inner layer positioning protrusion (101) and the outer layer positioning protrusion (33) extend in the direction of the outer layer positioning hole (201) and the inner layer positioning hole (32), respectively.