Backlight Module Plastic Frame Structure for Efficient Testing
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Solution Overview
Problem
Traditional backlight modules have a one-piece plastic frame design, making it inefficient and damaging to disassemble and reassemble for testing and repairs, as the entire module must be taken apart to replace defective components.
Innovation Solution
A detachable-type plastic frame structure with a rectangular hollow frame and a light source carrier, where the light source circuit board is installed on the carrier and light sources are placed into grooves, allowing for separate testing and assembly of the light guide plate and light sources, with engaging portions for secure connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a one-piece plastic frame design is used, then the structural integrity and simplicity are improved, but the assembly and testing efficiency deteriorate due to the need for complete disassembly and reassembly when replacing defective components
Solution Approach 1:
The plastic frame is divided into multiple detachable sections (first plastic frame section, second plastic frame section, third plastic frame section) that can be separated from each other. This segmentation allows the light guide plate element to be accessed and tested independently without requiring complete disassembly of the entire frame structure, thereby improving assembly and testing efficiency while maintaining structural integrity through standardized connection interfaces.
2Ease of manufacture
If a one-piece plastic frame design is used, then the manufacturing simplicity is improved, but the repair efficiency deteriorates as the entire module must be disassembled to replace defective parts
Solution Approach 1:
The frame is segmented into multiple sections with standardized connection interfaces, allowing defective components such as the light guide plate element to be replaced by only disassembling the relevant frame section rather than the entire module. This maintains manufacturing simplicity through modular design while significantly improving repair efficiency.
Solution Approach 2:
The frame sections are pre-designed with standardized connection interfaces and mounting structures that enable quick attachment and detachment of components. This preliminary preparation of modular interfaces allows for rapid replacement of defective parts during repair operations without requiring complex disassembly procedures.
3Device complexity
If a one-piece plastic frame design is used, then the structural simplicity is improved, but the damage to non-defective parts increases during repeated disassembling and assembling operations
Solution Approach 1:
By segmenting the frame into separate sections, the disassembly operations are localized to only the necessary frame sections during repair and testing. This reduces the mechanical stress and handling of non-defective parts, minimizing damage risk while maintaining overall structural simplicity through the modular design.
Data Source
AI summary
A backlight module and a plastic frame structure thereof are provided. The plastic frame structure mainly comprises a plastic frame body and a light source carrier. The plastic frame body is used to carry optical films such as a light guide plate, and the light source carrier is used to fix light sources. The two parts, i.e. the plastic frame body and the light source carrier, are connected with each other by a detachable means, so as to be conveniently tested respectively, and then assembled together when no defect is found, as so to increase the assembling efficiency. Furthermore, if the two parts are assembled but have defects found, the two parts can conveniently be changed, respectively. Therefore, not only the rework cost can be reduced, but also the efficiencies of the test and assembly for the whole of the backlight module are increased.