Magnetic Circuit Board for Bendable Terminal Devices
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Solution Overview
Problem
Flexible circuit boards are difficult to stretch, requiring a reserved stretch dimension in terminal devices, which increases the device's volume and reduces assembly freedom, and are prone to damage during stretching.
Innovation Solution
A circuit board design featuring two first circuit substrates, two second circuit substrates, a magnetic assembly, and components that allow the circuit board to bend and extend, eliminating the need for reserved space and reducing the risk of damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If flexible circuit boards are used in bendable terminal devices, then the terminal device can achieve bendability and adaptability, but the circuit board requires a reserved stretch dimension which increases the volume of the terminal device
Solution Approach 1:
The circuit board is divided into multiple circuit substrates (first circuit substrates and second circuit substrates) that are connected through magnetic assemblies. This segmentation allows each substrate to be smaller and more manageable, eliminating the need for large reserved stretch dimensions while maintaining overall bendability through the modular structure.
Solution Approach 2:
The circuit board structure incorporates magnetic assemblies that enable dynamic movement and relative displacement between circuit substrates. This dynamic design allows the circuit board to bend and adapt to different configurations without requiring excessive reserved space, as the magnetic connections facilitate controlled movement rather than rigid stretching.
2Shape
If flexible circuit boards are stretched to accommodate bending, then the circuit board can achieve the required shape, but the circuit board is prone to damage during stretching
Solution Approach 1:
By dividing the circuit board into multiple substrates connected by magnetic assemblies, the structure avoids the need to stretch a single continuous flexible circuit board. Each substrate maintains its structural integrity while the magnetic connections between substrates accommodate the bending motion, eliminating the stretching-induced damage risk.
Solution Approach 2:
Magnetic assemblies serve as intermediary elements between circuit substrates, enabling relative movement and bending without direct mechanical stretching of the circuit board itself. The magnetic force mediates the connection, allowing substrates to move relative to each other while maintaining electrical connectivity, thus protecting the circuit board from damage.
3Adaptability or versatility
If flexible circuit boards are designed with reserved stretch dimension, then the circuit board can accommodate bending motion, but the assembly freedom of the terminal device is reduced
Solution Approach 1:
The magnetic assembly design enables dynamic adjustment and flexible positioning of circuit substrates relative to each other. This dynamic connection system provides assembly freedom as components can be easily positioned and adjusted during assembly, while still accommodating bending motion through the inherent flexibility of the magnetic connections without requiring fixed reserved dimensions.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The circuit board design enhances assembly freedom and reliability by allowing the outer layer to bend without stretching, reducing the volume of the terminal device and minimizing the risk of damage.
Implementation Method 1
a magnetic assembly (30), and a plurality of components (40, 50), wherein the two first circuit substrates (10), the two second circuit substrates (20), the magnetic assembly (30), and the plurality of components (40, 50) are electrically connected to each other
Data Source
AI summary
A circuit board includes two first circuit substrates, two second circuit substrates, a magnetic assembly, a first component, and a second component. The first circuit substrate includes a first coil. Two second circuit substrates are disposed between the two first circuit substrates and electrically connects the two first circuit substrates. The second circuit substrate includes a second coil. Two grooves are defined on second circuit substrate. The magnetic assembly is disposed between the two first circuit substrates and between the two second circuit substrates. The magnetic assembly includes a magnetic member. The first circuit substrate can be bent by an interaction of a magnetic field generated by the magnetic assembly and a magnetic field generated by the first coil or the second coil. The present disclosure further provides method for manufacturing the circuit board and a terminal device.