Hybrid Flexible Flat Cable With Optical Paths and EMI Shielding
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Flexible flat cables with conductive signal lines face challenges in transmitting ultra-high speed signals due to low shielding performance and high impedance, while optical cables are complex and costly to manufacture.
Innovation Solution
A hybrid flexible flat cable design incorporating highly reflective members, light-transmitting and conductive signal transmission members, a highly reflective adhesive, and an electrical shielding member, which allows for both optical and electrical signal transmission with improved shielding and reduced manufacturing complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If optical cables are used for ultra-high speed signal transmission, then transmission performance is improved, but manufacturing complexity increases
Solution Approach 1:
The patent combines optical signal transmission members and electrical signal transmission members into a single flexible flat cable structure. The optical fibers and copper conductors are integrated within the same flat cable body, allowing both optical and electrical signals to be transmitted simultaneously through a unified manufacturing process, thereby reducing overall system complexity while maintaining ultra-high speed transmission capabilities
Solution Approach 2:
The flexible flat cable is designed to perform multiple functions: it can transmit both optical signals (through optical fibers) and electrical signals (through copper conductors) within a single cable structure. This multi-functional design eliminates the need for separate optical and electrical cable systems, simplifying installation and manufacturing while providing versatile signal transmission options
2Object-affected harmful factors
If conventional coaxial cable shielding is used, then electrical signal transmission is protected, but ultra-high speed signal transmission capability is reduced
Solution Approach 1:
The patent applies different shielding strategies to different signal transmission members within the cable. Electrical signal transmission members are provided with traditional electromagnetic shielding for protection against interference, while optical signal transmission members are protected through physical isolation and positioning. This localized approach allows each type of signal to receive appropriate protection without compromising the other's transmission performance
Solution Approach 2:
The cable structure is segmented into distinct regions: electrical signal transmission members with their shielding layers, and optical signal transmission members with their protective coatings and positioning structures. This segmentation allows independent optimization of shielding for electrical signals while maintaining the integrity and performance of optical signal transmission paths
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 hybrid cable effectively transmits both optical and electrical signals with enhanced shielding, reducing signal interference and manufacturing costs.
Implementation Method 1
a highly reflective member having a plate shape, a pair of light-transmitting signal transmission members disposed on a first surface of the highly reflective member
Implementation Method 2
a highly reflective adhesive member fixing the pair of light-transmitting signal transmission members and the pair of conductive signal transmission members to the highly reflective member
Implementation Method 3
an adhesive member disposed on the second surface of the non-conductive member, and an electrical shielding member coupled to the non-conductive member through the adhesive member
Data Source
AI summary
A flexible flat cable includes a highly reflective member having a plate shape, light-transmitting signal transmission members spaced apart from each other on a first surface of the highly reflective member, conductive signal transmission members spaced apart from each other on the first surface of the highly reflective member, a highly reflective adhesive member that fixes the light-transmitting signal transmission members and the conductive signal transmission members to the highly reflective member, and couples the highly reflective member to a non-conductive member, the non-conductive member including a first surface in contact with the highly reflective adhesive member, and a second surface opposite to the first surface of the non-conductive member, an adhesive member that is disposed on the second surface of the non-conductive member, and couples an electrical shield member to the non-conductive member, and the electrical shield member coupled to the non-conductive member by the adhesive member.