Modular Backlight Module for Dust Inspection
Solution Overview
Problem
Existing backlight modules with two light guide plates are difficult to inspect for dust and dirt during assembly, requiring dismantling for cleaning, which increases the risk of damage and manufacturing losses.
Innovation Solution
A modular design with a first and second backlight unit, each comprising a cover, light guide plate, light source, and optical films, allowing for detachable assembly and inspection for defects at any stage, reducing the need for repeated dismantling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the backlight module is assembled with two light guide plates in a fixed structure, then the assembly is complete and functional, but dust and dirt cannot be inspected during assembly and repeated dismantling is required for cleaning
Solution Approach 1:
The backlight module is divided into separate components (first backlight unit with first light guide plate, second backlight unit with second light guide plate) that can be assembled and disassembled independently. This segmentation allows inspection for dust and dirt at different stages of assembly without requiring complete dismantling, thereby improving defect inspection capability while maintaining manageable structural complexity.
2Ease of manufacture
If the backlight module is dismantled repeatedly for dust and dirt cleaning, then cleaning can be performed, but the probability of damage increases and manufacturing losses occur
Solution Approach 1:
The modular design enables preliminary inspection for dust and dirt before final assembly is completed. By allowing inspection at intermediate stages during the assembly process, cleaning can be performed proactively before dust and dirt become trapped in difficult-to-reach areas, reducing the need for repeated dismantling and minimizing damage probability.
3Productivity
If the backlight module uses a modular detachable design, then defect inspection can be performed at any stage, but the assembly structure becomes more complex
Solution Approach 1:
The backlight module is segmented into distinct units (first backlight unit, second backlight unit) that can be inspected independently. This segmentation improves defect inspection efficiency by allowing targeted inspection of specific areas without requiring complete disassembly, while the modular structure maintains manageable complexity through standardized interfaces and components.
Data Source
AI summary
A backlight module includes first and second backlight units. The first backlight unit includes a first cover, a first light guide plate, a first light source and at least one first optical film. The first cover has a first surface and a second surface opposite to each other. The first light guide plate is disposed on the first surface. The first light source is disposed on the first surface and located on a side of the first light guide plate. The first optical film is disposed between the first surface and the first light guide plate. The second backlight unit is detachably disposed with the first backlight unit and has a structure similar to the first backlight unit. A display device having the backlight module is also provided.