Coil Component Multilayer Insulation for Miniaturization
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Solution Overview
Problem
Miniaturization and thinning of coil electronic components require improved insulation properties to maintain magnetic characteristics and breakdown voltage, which is challenging due to limitations in increasing the magnetic material ratio and insulation property deterioration when using metal magnetic particles.
Innovation Solution
A coil electronic component with a body containing magnetic particles coated with a multilayer structure, including a phosphorus-based inorganic coating layer and an atomic layer deposition layer, enhances insulation properties while maintaining magnetic characteristics, allowing for increased magnetic material content and improved breakdown voltage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the thickness of insulating layers is reduced to enable miniaturization, then component size is reduced, but insulation and breakdown voltage characteristics may be compromised
Solution Approach 1:
The patent uses composite insulating structures combining organic and inorganic coating layers to achieve high insulation performance in reduced thickness. The combination of different material properties in the multi-layer composite structure provides superior insulation characteristics per unit thickness compared to single-layer structures, enabling miniaturization without compromising reliability.
Solution Approach 2:
The patent changes the material composition and structural parameters of the insulating layers by transitioning from single-layer to multi-layer structures with different material properties. This parameter change allows the insulating layers to maintain or enhance their insulation performance even when the overall thickness is reduced for miniaturization purposes.
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 multilayer coating structure effectively improves insulation and breakdown voltage characteristics, enabling miniaturization and maintaining magnetic performance, with a thickness that is half that of existing insulating layers, thus enhancing permeability and stability.
Implementation Method 1
the second layer is an atomic layer deposition layer
Data Source
AI summary
A coil electronic component includes a body, in which a coil portion is embedded, including a plurality of magnetic particles, and an external electrode connected to the coil portion. Among the plurality of magnetic particles, at least a portion of magnetic particles include a first layer, disposed on a surface of a magnetic particle among the magnetic particles, and a second layer disposed on a surface of the first layer. The first layer is an inorganic coating layer containing a phosphorus (P) component, and the second layer is an atomic layer deposition layer.