Multi-Helical Coil Layout Without Layer Stacking Leakage
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Solution Overview
Problem
Existing thin-film coil parts face issues with reduced productivity due to multiple layer formation processes, internal terminal placement difficulties, and potential leakage currents, which affect electromagnetic performance.
Innovation Solution
A coil apparatus with multiple coil patterns formed on a single surface in a multi-helical structure, where patterns are spaced apart and connected via vias, allowing for efficient electrical connections and reduced layer stacking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If the coil pattern is formed in multiple layers to secure sufficient electromagnetic force, then the electromagnetic force is improved, but the productivity is reduced due to additional processes
Solution Approach 1:
The patent transitions from vertical stacking (multiple layers) to horizontal arrangement (multiple patterns on one surface). Multiple coil patterns are formed side-by-side on a single substrate surface, spaced apart in parallel, eliminating the need for interlayer insulating layers and via holes between layers while maintaining sufficient electromagnetic force through increased lateral coverage.
2Force
If the coil pattern is formed in multiple layers, then the electromagnetic force is improved, but the device complexity increases due to interlayer insulating layer formation, via hole formation, and deposition film formation
Solution Approach 1:
The patent extracts and eliminates the intermediate layers (interlayer insulating layers and via holes) from the multi-layer structure. By forming all coil patterns on a single substrate surface, the complex stacking processes including insulating layer deposition, via hole formation, and multiple deposition steps are removed, significantly reducing device complexity.
3Force
If the coil pattern is formed in multiple layers, then the electromagnetic force is improved, but leakage current occurs because the interlayer insulating layer may not completely block the current
Solution Approach 1:
The patent avoids the harmful effect of potential leakage currents through interlayer insulating layers by completely eliminating the multi-layer stacking structure. All coil patterns are formed on the same substrate surface with adequate spacing, removing the interface between layers where leakage could occur, thus improving reliability while maintaining electromagnetic performance.
4Force
If the coil pattern is formed in multiple layers with terminals on the winding core side, then the electromagnetic force is improved, but the ease of operation deteriorates because connections between the coil part and outside power supply become difficult
Solution Approach 1:
The patent inverts the terminal placement strategy. Instead of placing terminals on the winding core side (inside) as in conventional multi-layer structures, the coil patterns are arranged on a single surface with terminals accessible on the outer perimeter, making electrical connections to external power supplies straightforward and easy to implement.
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 design secures high electromagnetic force while enhancing circuit freedom and production efficiency by minimizing layer count and preventing leakage currents.
Implementation Method 1
Thin-film coil parts are electronic parts used for noise removal and focus correction in various electronic devices. In order to secure sufficient electromagnetic force
Data Source
AI summary
Provided is a coil apparatus having a plurality of coil patterns formed on one surface. The coil apparatus comprises at least one coil substrate, wherein the coil substrate comprises a base layer, and a coil pattern formed on the base layer and including a pattern portion, a via portion part or an external electrode portion, and a coil substrate, wherein the coil substrate is wound in a multi-helical structure in response to a plurality of coil patterns being provided.