Backlight Module Clamping Structure for Precise Light Bar Positioning
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Solution Overview
Problem
Traditional liquid crystal display backlight modules face issues with securing the light bar onto the back plate, leading to potential misalignment and imperfect adhesion due to manual handling, which affects luminous efficiency and reliability.
Innovation Solution
A backlight module with a clamping structure comprising plug boards on the light bar and corresponding via-holes on the back plate, allowing the plug boards to extend and attach securely, ensuring precise positioning and improved adhesion without relying on thermally conductive adhesives.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If manual adhesion with thermally conductive adhesive is used to secure the light bar onto the back plate, then the light bar can be attached to the back plate, but the position of the light bar cannot be fixed precisely and adhesion may be imperfect
Solution Approach 1:
Positioning connectors are pre-arranged on the back plate at specific positions before the light bar is attached. This preliminary positioning structure guides the clamping members to the correct location, ensuring precise positioning without requiring complex adjustment mechanisms during assembly.
Solution Approach 2:
The manual adhesion process using thermally conductive adhesive is replaced with a mechanical clamping system. The clamping members engage with the positioning connectors through snap-fit or interlocking mechanisms, providing precise positioning and secure attachment without relying on adhesive materials or manual alignment.
2Reliability
If manual adhesion method is used to secure the light bar, then the light bar can be attached, but the adhesion may be imperfect and reliability is reduced
Solution Approach 1:
The adhesive-based mechanical bonding system is replaced with a mechanical interlocking system. The clamping members engage with the positioning connectors through geometric interlocking features, providing reliable and consistent attachment that is not dependent on adhesive quality, surface preparation, or curing conditions.
Solution Approach 2:
The positioning connectors are pre-formed on the back plate with precise geometric features that guide the clamping members into correct engagement positions. This preliminary structuring ensures that during assembly, the clamping members automatically align and engage reliably without requiring complex positioning steps or quality control of adhesive application.
3Productivity
If the light bar position is not fixed during adhesion, then manual assembly is simple, but the light bar may be secured at wrong position affecting luminous efficiency
Solution Approach 1:
Positioning connectors are pre-arranged on the back plate at the exact locations where the light bar needs to be secured. These connectors act as guides that automatically position the clamping members during assembly, ensuring the light bar is attached at the correct position without requiring manual measurement or adjustment, thus maintaining both speed and precision.
Solution Approach 2:
The manual positioning and alignment process is replaced with a mechanical guidance system. The clamping members are designed to engage with the positioning connectors in a snap-fit manner, automatically positioning the light bar correctly during assembly. This mechanical system ensures precise positioning while maintaining fast assembly speed through intuitive engagement.
Data Source
AI summary
The present disclosure provides a backlight module and a display device. The backlight module includes a back plate, a light bar arranged on the back plate, and a clamping structure. The clamping structure includes clamping members arranged on the light bar, and positioning connectors arranged on the back plate at positions corresponding to the clamping members. The clamping members cooperate with the positioning connectors to secure the light bar onto the back plate.