FPC Electrical Connector Layout for Stable Shielded Signal Transmission
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Solution Overview
Problem
Conventional electrical connectors face manufacturing difficulties and high costs due to complex processes and circuit layouts, particularly with USB Type-C connectors, which require intricate flexible printed circuit boards and elastic terminals with dense connecting holes.
Innovation Solution
The design includes an insulating housing with flexible printed circuit boards featuring an outer ground layer, signal layer, and inner ground layer, along with elastic structures and location blocks, which simplify the manufacturing process and circuit layout, reducing signal interference and electromagnetic interference while providing a stable signal transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional elastic terminals with dense connecting holes are used, then the electrical connector can achieve signal transmission, but the manufacturing process becomes difficult and costly
Solution Approach 1:
The patent extracts the elastic terminal component entirely and replaces it with an elastic structure integrated directly into the flexible printed circuit board. This eliminates the need for separate elastic terminals with connecting holes, simplifying the manufacturing process while maintaining signal transmission functionality through the integrated elastic structure and contact portions
Solution Approach 2:
The patent merges the elastic terminal function with the flexible printed circuit board by integrating the elastic structure and contact portions directly into the FPC layers. This combination eliminates the need for separate elastic terminals and their associated connecting holes, reducing manufacturing complexity while preserving electrical connectivity and signal transmission
2Speed
If conventional flexible printed circuit boards with three signal layers and multiple connecting holes are used, then the electrical connector can proceed with high-speed data transmission, but the internal circuit layout becomes more complicated and the cost increases
Solution Approach 1:
The patent extracts and eliminates the need for multiple connecting holes through the FPC layers by designing contact portions that extend from the signal layer to the outer ground layer without requiring through-hole connections. This simplifies the circuit layout while maintaining high-speed data transmission capability through the streamlined signal path
Solution Approach 2:
Instead of creating multiple connecting holes through the FPC layers to achieve signal transmission, the patent inverts the approach by having the signal layer contact portions extend outward to form contact portions that make direct electrical contact with mating connectors. This eliminates the need for complex through-hole processes while maintaining signal integrity and transmission speed
Data Source
AI summary
An electrical connector includes an insulating housing, at least one flexible printed circuit board mounted in the insulating housing, at least one location block disposed to a middle of an outer surface of the at least one flexible printed circuit board, at least one elastic structure disposed on an outer surface of the at least one location block, and a shell. The at least one flexible printed circuit board includes an outer ground layer, a signal layer and an inner ground layer. The signal layer has a plurality of traces. Each trace has a main portion, at least one contact portion and a soldering portion. The shell surrounds the insulating housing, the at least one flexible printed circuit board, the at least one location block and the at least one elastic structure.