Flat Electrical Element with Integrated Bonding Patterns
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Solution Overview
Problem
The challenge is to simplify the mounting process of flat cables in electronic apparatuses without connectors, as existing methods require complex manufacturing and high positional accuracy, making them difficult and costly to produce, especially for small sizes.
Innovation Solution
A flat electrical element with deformable surfaces and conductor patterns that can be collectively surface-mounted on a substrate, eliminating the need for connectors and guide members, and utilizing a transmission line structure with ground and signal conductor patterns to stabilize the ground potential and reduce the number of components and processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a connector is used to connect the flat cable to the substrate, then the electrical connection is reliable, but the manufacturing process becomes complicated and costly
Solution Approach 1:
The patent merges the connector structure with the flat cable itself by forming conductor patterns directly on the flexible base sheet. The bonding patterns are integrated into the cable structure, eliminating the need for separate connectors. This integration maintains reliable electrical connections while significantly simplifying the manufacturing process.
Solution Approach 2:
The patent extracts the connector function from the traditional separate component and embeds it directly into the flat cable structure. The bonding patterns and conductor patterns are formed directly on the base sheet, removing the need for additional connector assemblies and reducing manufacturing steps.
2Reliability
If a connector is used for the flat cable, then the connection is stable, but the positional accuracy requirement increases and manufacturing difficulty increases
Solution Approach 1:
The bonding patterns are merged with the conductor patterns on the same base sheet, creating an integrated structure that maintains stable connections without requiring high positional accuracy. The patterns are formed together in a single manufacturing process, eliminating alignment requirements between separate components.
3Ease of operation
If connectors and guide members are used, then the mounting process is well-defined, but the number of components and processes increases
Solution Approach 1:
The patent merges multiple functions into the flat cable structure itself. The bonding patterns serve both as electrical connectors and as positioning guides during mounting. This integration maintains a well-defined mounting process while eliminating the need for separate guide members and reducing the total component count.
4Ease of operation
If traditional flat cable mounting methods are used, then the cable can be connected, but the number of mounting processes is large
Solution Approach 1:
The patent combines electrical connection and mechanical bonding into a single integrated structure. The bonding patterns are formed directly on the base sheet alongside the conductor patterns, allowing both functions to be achieved in one manufacturing step rather than through multiple separate processes.
Data Source
AI summary
An electronic apparatus includes a substrate and an electrical element mounted on the substrate. The electrical element includes a base material including a first principal surface and a second principal surface that are deformable and flat or substantially flat surfaces and a conductor pattern included on the base material. The electrical element further includes a first connection portion and a second connection portion that connect to a circuit included on the substrate and a transmission line portion located in a position different from positions of the first connection portion and the second connection portion that electrically connects the first connection portion and the second connection portion. The conductor pattern includes a conductor pattern of the first connection portion, a conductor pattern of the second connection portion, a conductor pattern of the transmission line portion, and an electrical-element-side bonding pattern arranged in the transmission line portion.