Glass Plate Inductor Layout for More Wiring Circulations
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Solution Overview
Problem
Existing inductor components face limitations in the number of circulations of circularly extending wirings due to the placement of terminal electrodes, leading to restricted design freedom and challenges in fine adjustment of inductance values.
Innovation Solution
A single-layer glass plate inductor component with outer-surface conductors and terminal electrodes disposed above the surface, through wirings extending through the glass plate, and a structure that allows the circularly extending wiring to parallel the length of the glass plate, reducing the influence of firing and enabling more circulations without significant changes in inductance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If terminal electrodes are disposed in the same layer as bottom-surface conductors, then manufacturing is easier, but the number of circulations of circularly extending wiring is limited
Solution Approach 1:
The patent applies dimensionality change by moving terminal electrodes from the same layer as bottom-surface conductors to a different layer (above the bottom surface). This spatial rearrangement in the vertical dimension allows the circularly extending wiring to have more circulations without being constrained by terminal electrode positions, while still enabling simultaneous formation of all conductive elements during firing.
Solution Approach 2:
The patent segments the conductor structure into distinct layers: bottom-surface conductors on the bottom surface, terminal electrodes above the bottom surface, and top-surface conductors on the top surface. This segmentation allows each element to be positioned independently to optimize the wiring circulation path while maintaining manufacturing simplicity through simultaneous formation.
2Adaptability or versatility
If the circularly extending wiring is constrained by terminal electrode positions, then design freedom is restricted, but fine adjustment of inductance values becomes difficult
Solution Approach 1:
By positioning terminal electrodes above the bottom surface rather than in the same layer, the patent creates additional design freedom in arranging the circularly extending wiring. The wiring can now circulate more freely in the horizontal plane without being constrained by terminal electrode positions, while the vertical separation maintains precise control over inductance values through controlled spacing and geometry.
3Ease of manufacture
If outer-surface conductors and terminal electrodes are formed in the same layer, then manufacturing is simpler, but the formation range of conductors is limited
Solution Approach 1:
The patent utilizes vertical dimensionality by forming terminal electrodes above the bottom surface rather than in the same layer as bottom-surface conductors. This spatial separation in the vertical dimension expands the horizontal formation range of conductors, allowing the circularly extending wiring to cover a larger area while maintaining manufacturing simplicity through simultaneous formation of all conductive elements during the firing process.
Data Source
AI summary
An inductor component comprising a single-layer glass plate of a rectangular parallelepiped shape with a width, a length longer than the width, and a height, and having a bottom surface defined by the length and width and a top surface positioned on a back side of the bottom surface; bottom-surface and top-surface conductors disposed above the bottom and top surfaces, respectively; through wirings each extending through a corresponding one of through holes formed in the glass plate; an underlying insulation layer above the bottom-surface conductors; and first and second terminal electrodes above the underlying insulation layer. The bottom-surface and top-surface conductors, and the through wirings are electrically connected as a circularly extending wiring that circularly extends around a winding axis parallel to the bottom surface and the length. The circularly extending wiring, and the first and second terminal electrodes, are electrically connected to each other as an inductor element.