Electronic Device FPCB Routing Through Middle-Frame Assembly Hole
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Solution Overview
Problem
Existing electronic device assembly methods, particularly for tablet computers, result in long assembly lengths for flexible printed circuit boards, leading to high costs and compromised signal transmission quality.
Innovation Solution
Reversing the assembly process by positioning the connector on the main board away from the screen component and creating a corresponding assembly hole in the middle frame, allowing for direct fastening of the screen component to the middle frame without glue dispensing, and using a pressing piece to secure the connector directly to the main board.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the screen component is set up for glue dispensing with the screen, then the screen can be fastened to the middle frame, but the assembly length of the flexible printed circuit board becomes long, resulting in high costs and poor signal transmission quality
Solution Approach 1:
The patent inverts the traditional assembly sequence by first assembling the connector on the main board, then fastening the screen component directly to the middle frame without glue dispensing setup, and finally connecting the flexible printed circuit board to the connector. This reversal eliminates the need for long FPCB assembly length while maintaining manufacturing feasibility.
2Productivity
If the connector is positioned on the main board closer to the screen component, then the assembly process follows traditional methods, but the flexible printed circuit board requires excessive length, affecting signal transmission quality
Solution Approach 1:
The patent positions the connector on the side of the main board deviating from the screen component, utilizing the spatial dimension more effectively. This dimensional repositioning allows the FPCB to connect through the assembly hole in the middle frame, significantly reducing the required FPCB length while maintaining assembly efficiency.
3Ease of manufacture
If the traditional assembly method is used with glue dispensing on the screen, then the screen can be secured, but new assembly devices need to be developed and existing devices modified
Solution Approach 1:
The patent extracts the glue dispensing step from the screen assembly process by fastening the screen component directly to the middle frame without glue. This eliminates the need for glue dispensing devices and their associated setup, reducing device complexity while maintaining assembly simplicity.
Data Source
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AI summary
Embodiments of this application provide an electronic device, including a screen component, a middle frame, a main board, a connector, and a flexible printed circuit board, the screen component and the middle frame enclose an accommodating cavity, the main board is located in the accommodating cavity, the connector is disposed on a side of the main board deviating from the screen component, the flexible printed circuit board connects the connector and the screen component, an assembly hole is disposed on the middle frame, and the assembly hole is disposed corresponding to the connector. The electronic device provided in embodiments of this application can resolve a problem in related technologies that an assembly length of the flexible printed circuit board is long, resulting in high costs of the electronic device and affecting quality of signal transmission from the main board to a screen end.