Chambered Circuit Board for Backlight Module Cost Reduction
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Solution Overview
Problem
Conventional backlight modules have high manufacturing costs due to the large number of connectors and high-voltage power lines, and inefficient use of board material, leading to resource wastage.
Innovation Solution
The design incorporates a reduced number of connectors and high-voltage power lines by using different circuit boards for the inverter and capacitors, with chambered circuit boards that allow multiple lamps to be driven by a single inverter and power line, optimizing material usage and reducing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional printed circuit board with multiple connectors and high-voltage power lines is used to drive multiple lamps, then the backlight module can function properly, but the manufacturing cost increases and material waste occurs
Solution Approach 1:
The patent combines multiple circuit functions (inverter and capacitor circuits) onto a single integrated circuit board. The circuit board includes a substrate with an inverter circuit and multiple capacitor circuits integrated thereon, eliminating the need for separate connectors and power lines for each component. This merging reduces the total number of connectors and high-voltage power lines while maintaining proper backlight module functionality.
Solution Approach 2:
The integrated circuit board serves multiple functions simultaneously: it acts as the substrate for the inverter circuit, provides mounting for multiple capacitor circuits, and integrates all electrical connections. This multi-functional design allows a single circuit board to replace what would traditionally require multiple separate components and connections, reducing complexity and material usage.
2Ease of operation
If multiple connectors and high-voltage power lines are used to drive each lamp, then the backlight module can operate, but the manufacturing cost increases
Solution Approach 1:
The patent merges the inverter circuit and multiple capacitor circuits onto a single integrated circuit board, eliminating the need for multiple separate connectors and high-voltage power lines. This integration significantly reduces the number of components that need to be manually connected during assembly, thereby reducing manufacturing cost while maintaining full lamp driving capability.
Solution Approach 2:
The integrated circuit board provides self-contained functionality with all necessary circuits (inverter and capacitors) and connections already integrated. This reduces the need for external connectors and simplifies the manufacturing process, as the circuit board arrives pre-configured and requires minimal additional assembly steps.
3Device complexity
If a rectangular printed circuit board is used with all components mounted on it, then the circuit functions are complete, but unused board material is wasted
Solution Approach 1:
The patent segments the circuit board design to match the actual spatial distribution of components. The circuit board is configured with chambers or designated areas that correspond to the physical arrangement of the inverter and capacitor circuits, allowing the board shape and size to be optimized to the actual component layout rather than using a standard rectangular form factor. This reduces unused board material while maintaining complete circuit functionality.
Data Source
AI summary
The backlight module includes a first lamp, a second lamp, a circuit board and a driving circuit board. The circuit board includes chambers to be connected to the first lamp and the second lamp, and capacitors to stabilize a voltage across two ends of each of the first lamp and the second lamp. The driving circuit board includes an inverter for driving the first lamp and the second lamp via the circuit board.