Conductive Bonding via Capillary Flow for Flat Cable Connection
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Solution Overview
Problem
The challenge lies in establishing a reliable and cost-effective connection method for high-frequency cables, particularly flat cables, which require complex and expensive connectors due to their small size and thin structure, making it difficult to achieve accurate positional mounting in compact electronic devices.
Innovation Solution
A connecting-and-fixing method involving a cable with a linear conductor on an insulating base material, featuring through holes for conductive bonding material to flow and connect the conductor to a substrate terminal, ensuring a simple and accurate electrical connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If connectors are used to establish connection for flat cables, then electrical connection is achieved, but manufacturing complexity and cost increase
Solution Approach 1:
The invention extracts the essential function of electrical connection from the complex connector structure. By removing the male-female connector components and retaining only the necessary conductive bonding function, the solution achieves reliable electrical connection through direct conductive bonding material application between cable and substrate terminal, eliminating unnecessary structural complexity
Solution Approach 2:
The invention replaces expensive, precisely manufactured connectors with a simpler, more cost-effective approach using conductive bonding material. This disposable-like bonding method achieves the necessary connection reliability without the high manufacturing costs and complexity associated with precision connectors
2Reliability
If connectors are used for mounting, then electrical connection is established, but mounting precision becomes difficult to control
Solution Approach 1:
The invention replaces the mechanical connector mounting system with a conductive bonding material-based connection system. This substitution eliminates the need for precise mechanical alignment and mounting operations, as the conductive bonding material provides both electrical connection and positional fixation through its bonding properties, significantly improving manufacturing precision
3Reliability
If conventional connector method is used, then connection is achieved, but process complexity increases
Solution Approach 1:
The invention merges the electrical connection function and the mechanical fixation function into a single conductive bonding material application step. This consolidation eliminates the separate steps of connector assembly and mounting, significantly simplifying the manufacturing process while maintaining reliable electrical connection between the cable and substrate terminal
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
This method establishes a reliable connection structure by a straightforward process, reducing manufacturing complexity and costs while maintaining high accuracy, even in tight spaces within electronic devices.
Implementation Method 1
fluidizing a conductive bonding material applied to the other end of the through hole and causing the conductive bonding material to flow through the through hole to the one end of the through hole
Data Source
AI summary
A high-frequency transmission line includes an insulator as a base material, and also includes linear conductors configured to transmit signals. Through holes are provided at positions corresponding to the positions of the linear conductors. The high-frequency transmission line is arranged on a connector in a state in which the positions of the bottom ends of the through holes are respectively aligned with the positions of signal terminals provided on the connector. A conductive bonding material provided at the top ends of the through holes is fluidized when heat is applied thereto, and flows to the bottom ends of the through holes due to surface tension or capillarity. As a result, the linear conductors are electrically connected to the signal terminals respectively.