Coil Component Slit Design for Electrical Short Prevention
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Solution Overview
Problem
The increasing demand for high-performance and compact electronic devices has led to a need for coil components with reduced thickness and size, while also preventing electrical shorts during mounting on substrates.
Innovation Solution
A coil component design featuring a body with opposing surfaces, embedded support substrates, slit portions, and plating prevention portions, which allows for reduced thickness and size, and facilitates the formation of a lower surface electrode structure, preventing external electrode protrusion and electrical shorts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If external electrodes are disposed on both surfaces of the body, then electrical connection is achieved, but the overall length or width of the coil component increases due to electrode thickness
Solution Approach 1:
The patent transitions from a conventional two-dimensional electrode arrangement (on both top and bottom surfaces) to a one-dimensional arrangement (only on the top surface). The external electrode is disposed solely on the first surface of the body, eliminating the need for electrodes on the opposing surface. This dimensional reduction directly addresses the contradiction by maintaining electrical connection functionality while reducing the overall length or width of the component.
2Length of moving object
If external electrode thickness is reduced to minimize component size, then component compactness is improved, but the external electrode may contact adjacent components causing electrical shorts
Solution Approach 1:
The patent introduces the body structure as an intermediary element that positions and isolates the external electrode. The external electrode is disposed on the first surface of the body, and the body itself acts as a physical barrier and mediator between the electrode and adjacent components. This intermediary structure maintains compact component size while preventing electrical shorts by controlling the spatial relationship between the electrode and surrounding elements.
3Length of moving object
If the coil component is designed with reduced thickness for compactness, then device integration is improved, but manufacturing complexity increases due to precise positioning requirements
Solution Approach 1:
The patent merges the external electrode structure with the body structure by disposing the electrode directly on the first surface of the body. This integration combines what would otherwise be separate components (electrode and body) into a unified structure, reducing the number of discrete elements and simplifying manufacturing. The merged design maintains reduced thickness while lowering positioning complexity through structural integration rather than precise assembly of separate parts.
Data Source
AI summary
A coil component includes a body, a support substrate embedded in the body, a coil portion including first and second lead-out portions disposed on one surface of a support substrate and spaced apart from each other, slit portions formed along edge portions between both end surfaces of the body, opposing each other, and a first surface of the body, respectively, and exposing the first and second lead-out portions to internal surfaces of the slit portions, respectively, plating prevention portions embedded in the first and second lead-out portions, respectively, and having first surfaces exposed to the internal surfaces of the slit portions, respectively, and first and second external electrodes disposed on the first surface of the body, spaced apart from each other, extending to the internal surfaces of the slit portions, respectively, and connected to the first and second lead-out portions, respectively.