Inductor Component Vertical Wiring Penetration Magnetic Layer
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Solution Overview
Problem
In inductor components with long second inductor wiring, the ratio of magnetic material volume to component volume is reduced, leading to lower than expected inductance due to the external shape constraints, resulting in reduced inductance acquisition efficiency.
Innovation Solution
The inductor component design includes a base body with a magnetic layer closer to the main surface and vertically extending first and second vertical wirings that penetrate the magnetic layer, with the dimension of the penetration portion being five times or more the maximum dimension of the inductor wiring, enhancing inductance while maintaining a reasonable magnetic layer volume.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a second inductor wiring is added in parallel to the first inductor wiring to increase inductance, then the inductance should be improved, but the ratio of magnetic material volume to component volume becomes smaller, reducing inductance acquisition efficiency
Solution Approach 1:
The patent introduces vertical wirings that extend in the thickness direction (third dimension) perpendicular to the main surface, transforming the traditional planar inductor structure into a three-dimensional configuration. This allows the inductor wirings to utilize the vertical space within the magnetic layer, effectively increasing the inductance without requiring additional lateral space that would reduce the magnetic material volume ratio.
Solution Approach 2:
The vertical wirings are nested within the magnetic layer structure, with the wirings penetrating through the magnetic layer from the main surface. This nesting arrangement allows the conductive elements to be embedded within the magnetic material volume, maximizing the utilization of available space for both magnetic material and inductive elements simultaneously.
2Power
If the penetration portion dimension is increased to five times or more the inductor wiring dimension to improve inductance, then the inductance acquisition efficiency is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The patent specifies a quantitative parameter relationship where the penetration portion dimension is set to five times or more the maximum dimension of the inductor wiring. This parameter change establishes a clear design criterion that guides manufacturing processes, ensuring sufficient penetration depth to achieve the desired inductance while providing a measurable target for quality control and inspection.
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 configuration improves inductance by ensuring a sufficient magnetic layer thickness and reduces the occurrence of reduced inductance due to magnetic layer volume reduction, while maintaining a compact component size.
Implementation Method 1
the first vertical wiring and the second vertical wiring contribute to inductance
Data Source
AI summary
An inductor component includes a base body having a main surface, an inductor wiring extending in parallel to the main surface in the base body, a first vertical wiring, connected to a first end of the inductor wiring, that is exposed through the main surface, and a second vertical wiring, connected to a second end of the inductor wiring, that is exposed through the main surface. The base body has an upper magnetic layer disposed closer to the main surface than the inductor wiring. The first vertical wiring and the second vertical wiring have columnar shapes extending in a thickness direction while penetrating the upper magnetic layer. The dimension in the thickness direction of the penetration portion, which penetrates the upper magnetic layer, of the first vertical wiring is five times or more the maximum dimension in the thickness direction of the inductor wiring.