Backlight Module Crosswise Supporting Bars Strength
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Solution Overview
Problem
Large-size or ultra-thin backlight modules suffer from poor strength, leading to deformation, and increasing the backplate thickness or adding metal sheets to enhance strength results in excessive weight, making the display device heavy and difficult to assemble.
Innovation Solution
A backlight module design featuring a backplate with crosswise-mounted supporting bars that increase mechanical strength without significantly increasing weight, incorporating a bar-shape structure and snap-fit mechanisms for display panel and optical film positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the thickness of the backplate is increased or metal sheets are added to enhance strength, then the mechanical strength and resistance to bending are improved, but the weight of the backlight module increases significantly
Solution Approach 1:
The backplate is segmented by introducing multiple supporting bars that divide the backplate into multiple regions. These supporting bars are arranged in a grid pattern and fastened to the backplate, creating a reinforced structure that distributes mechanical loads across multiple points rather than requiring a uniformly thick backplate. This segmentation allows the backplate to maintain high mechanical strength while keeping the overall thickness and weight low.
Solution Approach 2:
The backlight module employs a composite structure combining the backplate material with supporting bars made of different materials optimized for specific functions. The supporting bars provide structural reinforcement while the backplate maintains its lightweight properties. This composite approach allows the system to achieve high strength-to-weight ratio by combining materials with complementary properties rather than using a single heavy material throughout.
2Stability of the object's composition
If the thickness of the backplate is increased or metal sheets are added to enhance strength, then the resistance to bending is improved, but the display device becomes too heavy and difficult to assemble
Solution Approach 1:
The backplate is segmented by introducing multiple supporting bars that divide the backplate into multiple regions. These supporting bars are arranged in a grid pattern and fastened to the backplate, creating a reinforced structure that distributes mechanical loads across multiple points rather than requiring a uniformly thick backplate. This segmentation allows the backplate to maintain high mechanical strength while keeping the overall thickness and weight low.
Solution Approach 2:
Instead of changing the thickness parameter of the backplate uniformly, the invention changes the structural parameters by adding supporting bars with specific dimensions, spacing, and arrangement patterns. The supporting bars have optimized cross-sectional areas and spacing distances that provide maximum bending resistance for minimum weight. This parameter optimization allows the backplate to achieve high stability while remaining lightweight and easy to handle during assembly.
Data Source
AI summary
The present disclosure relates to a field of display technology and discloses a backlight module and a display device. The backlight module comprises: a backplate comprising a bottom plate and side plates, which form a mounting recess; an optical film positioned in the mounting recess; at least two supporting bars positioned between the bottom plate and the optical film and arranged crosswise, wherein each two supporting bars are fastened to each other and each of the supporting bars is fastened on the bottom plate. In the above backlight module, a mechanical strength of the backplate of the backlight module may be increased due to the supporting bars mounted on the bottom plate and arranged crosswise, and a resistance to bending of the backplate is thus improved. Further, as the used supporting bars have a bar-shape structure and are arranged crosswise without covering the overall surface of the backplate, the weight of the backlight module is increased by a smaller amount than the existing backlight module with an increasing strength of the backplate. Thus, the backlight module has a high strength and a light weight.