Coil Component Electrode Slit Layout to Prevent Electrical Shorts
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Solution Overview
Problem
The increased use of compact electronic components in electronic devices leads to issues such as increased overall size and electrical shorts due to external electrodes coming into contact with adjacent components, degrading the characteristics of coil components.
Innovation Solution
A coil component design featuring slits and insulating layers to minimize contact between external electrodes and adjacent components, reducing the risk of electrical shorts and maintaining component integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If external electrodes are formed on two surfaces of the body to provide electrical connection, then electrical connectivity is improved, but the overall length and width of the coil component increase
Solution Approach 1:
The patent transitions from forming external electrodes on opposite surfaces (requiring large length/width) to forming them on adjacent surfaces connected by slits (reducing overall dimensions). The slits create a new dimensional pathway through the body, allowing electrodes to connect to lead patterns without extending the component's external footprint.
Solution Approach 2:
The body is segmented by forming slits that expose internal lead patterns. This segmentation creates separate access points to different lead patterns through the body's thickness, allowing external electrodes to be positioned closer together while maintaining electrical connectivity to distinct internal components.
2Reliability
If external electrodes are formed on two surfaces of the body, then electrical connection is achieved, but external electrodes may come into contact with adjacent components causing electrical short
Solution Approach 1:
The patent uses slits to create a third-dimensional pathway through the body thickness, allowing external electrodes to access lead patterns from adjacent surfaces rather than opposing surfaces. This spatial reconfiguration reduces the risk of contact with adjacent components on the same surface plane.
Solution Approach 2:
The slits act as intermediaries that mediate the connection between external electrodes and internal lead patterns. By routing the connection path through the body's thickness rather than across its surface, the slits provide isolation from adjacent components that might otherwise cause electrical shorts.
3Reliability
If slits are formed to expose lead patterns for external electrode contact, then electrical connectivity is improved, but leakage current may occur
Solution Approach 1:
An insulating layer is introduced as an intermediary substance within the slits, separating the external electrodes from direct contact with the conductive lead patterns and body. This insulating layer allows electrical connection to be established through controlled pathways while blocking unwanted leakage current paths.
Solution Approach 2:
The insulating layer is applied locally within the slits rather than uniformly across the entire component. This localized insulation provides targeted protection against leakage current at the critical interfaces where external electrodes contact the lead patterns, while maintaining electrical connectivity where needed.
Data Source
AI summary
A coil component includes a body including one surface, one end surface, the other end surface, one side surface, and the other side surface, a support substrate disposed in the body, a coil unit disposed on the support substrate and including first and second lead patterns, first and second slit portions respectively disposed in edge portions between each of the one end surface and the other end surface and the one surface , third and fourth slit portions respectively disposed in edge portions between each of the one side surface and the other side surface and the one surface, first and second external electrodes extending to the first and second slit portions to contact the first and second lead patterns, respectively. At least one of depths of the third and fourth slit portions is shallower than at least one of depths of the first and second slit portions.