Board-to-Board Connector with Flexible Circuit and Elastic Guide
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Solution Overview
Problem
Existing electrical connection systems for circuit boards face issues with poor contact and increased impedance during high-rate signal transmission due to position deviations and external forces, particularly when using flexible circuit boards and connectors.
Innovation Solution
An electrical connection module comprising an upper plate, a lower plate, supporting guide assemblies, elastic members, and a flexible circuit board, which allows the upper plate to move relative to the lower plate for accurate alignment and absorption of external forces, using Mezzanine connectors and conductive traces for secure and efficient electrical connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If two connectors are used for board-to-board electrical connection, then the connection can be established, but when the spacing between circuit boards is large, the terminal length increases causing increased impedance and reduced contact normal force
Solution Approach 1:
The connection system is segmented into an upper rigid circuit board with first connector, a flexible circuit board with second connector, and a lower rigid circuit board with third connector. This segmentation allows the flexible circuit board to act as an intermediate element that can bend and adapt to spacing variations, eliminating the need for excessively long terminals while maintaining signal transmission quality.
Solution Approach 2:
A flexible circuit board with a flexible protective layer is introduced between the two rigid circuit boards. This flexible component can bend and deform to accommodate large spacing between boards, allowing short terminals on the flexible circuit board to connect to the rigid circuit boards without requiring long terminal lengths, thus reducing impedance and maintaining contact force.
2Adaptability or versatility
If an intermediate adapter connector is used for board-to-board connection, then the connection can be established, but the impedance among the three sets of terminals increases
Solution Approach 1:
The flexible circuit board with flexible protective layer serves as the intermediate adapter instead of a traditional rigid adapter connector. The flexibility allows it to maintain good electrical contact with varying spacing, preventing impedance increase that would occur with rigid intermediate connectors.
Solution Approach 2:
The flexible circuit board can dynamically adjust its shape and position to accommodate spacing variations between circuit boards, maintaining optimal electrical contact throughout the connection, unlike static rigid adapter connectors that would create fixed impedance issues.
3Reliability
If connectors are used for mating between circuit boards, then electrical connection can be established, but position deviation prevents complementary mating
Solution Approach 1:
The flexible circuit board with flexible protective layer can bend and deform to compensate for position deviations between circuit boards, allowing the connectors to mate successfully even when there is misalignment, whereas rigid connectors would fail to mate with position deviations.
Solution Approach 2:
The flexible circuit board dynamically adjusts its configuration during assembly to accommodate position deviations, enabling the first connector, second connector, and third connector to achieve complementary mating despite manufacturing tolerances and alignment errors.
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 module compensates for position deviations and absorbs external forces, ensuring accurate and firm mating of connectors, reducing impedance and enhancing high-rate signal transmission capabilities.
Implementation Method 1
a plurality of elastic members, wherein the plurality of elastic members are respectively provided between the upper plate and the lower plate to provide elastic supporting forces for the upper plate
Data Source
AI summary
The present disclosure provides an electrical connection module and a board-to-board electrical connection device. The board-to-board electrical connection device comprises an upper circuit board, a first complementary connector provided to the upper circuit board, a lower circuit board; and an electrical connection module. The electrical connection module electrically connects the upper circuit board and the lower circuit hoard, and comprises an upper plate, a first connector provided to the upper plate to be mated with the first complementary connector, a lower plate, a plurality of supporting guide assemblies, a plurality of elastic members, an electrical connecting unit and a flexible circuit board. The plurality of supporting guide assemblies connects the upper plate and the lower plate and allows the upper plate to relative to the lower plate.