Coil components

By designing a coil component with a support member having surface roughness greater than the coil's side surface roughness, the adhesion issue is resolved, enabling miniaturization and maintaining structural integrity through enhanced bonding.

JP2026110493APending Publication Date: 2026-07-02SAMSUNG ELECTRO MECHANICS CO LTD
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
SAMSUNG ELECTRO MECHANICS CO LTD
Filing Date
2025-10-15
Publication Date
2026-07-02

AI Technical Summary

Technical Problem

Miniaturization of coil patterns in inductors leads to a decrease in adhesion force between the coil and the substrate, potentially causing the coil to float, which is a challenge in achieving both miniaturization and maintaining structural integrity.

Method used

The coil component features a support member with surface roughness greater than the coil's side surface roughness, ensuring adhesion by forming a maximum height roughness of 1 μm to 7.5 μm on the support member and 10 nm to 100 nm on the coil's side surface, utilizing plasma treatment to enhance bonding.

Benefits of technology

This configuration ensures stable adhesion between the coil and the support member, preventing floating defects while allowing for miniaturization without compromising component characteristics.

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Abstract

The present invention provides a coil component that allows for miniaturization of the coil pattern while ensuring strong adhesion with the support member. [Solution] The coil component according to the present invention comprises a body containing a magnetic material, a support member disposed within the body and having surface roughness formed on one surface, and a coil disposed on one surface of the support member and having surface roughness formed on its side surface, wherein the maximum height roughness (Rmax_s) of the support member with surface roughness is greater than the maximum height roughness (Rmax_c) of the side surface of the coil with surface roughness.
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