Solid Electrolytic Capacitor Design for Short Circuit Prevention
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Summary
Problems
Existing solid electrolytic capacitors face challenges in ensuring flexibility in via conductor installation while minimizing the risk of short circuits, particularly due to limitations in conductive layer space and accuracy in manufacturing processes.
Innovation solutions
The proposed solid electrolytic capacitor design includes an anode plate with a porous layer, a dielectric layer, a solid electrolyte layer, a conductor layer, and an insulating layer that covers at least a part of the end portion of the solid electrolyte layer, thereby reducing the risk of short circuits and enhancing flexibility in conductor placement.
TRIZ Analysis
Specific contradictions:
General conflict description:
Principle concept:
If the formation range of the cathode is made larger than the solid electrolyte layer to expand the range for via conductor provision, then the flexibility in installation spot of the via conductor is improved, but the risk of causing a short circuit increases due to potential contact between the cathode and uncovered spots of the porous portion
Why choose this principle:
An insulating layer is introduced as an intermediary between the cathode and the porous portion surface. This insulating layer extends beyond the solid electrolyte layer boundary and covers the cathode, preventing direct contact between the cathode and any uncovered spots of the porous portion, thus eliminating the short circuit risk while allowing the cathode to extend beyond the solid electrolyte layer for via conductor flexibility
Principle concept:
If the formation range of the cathode is made larger than the solid electrolyte layer to expand the range for via conductor provision, then the flexibility in installation spot of the via conductor is improved, but the risk of causing a short circuit increases due to potential contact between the cathode and uncovered spots of the porous portion
Why choose this principle:
The insulating layer is formed in advance before the cathode is applied, and it is designed to extend beyond the solid electrolyte layer boundary. This preliminary action ensures that when the cathode is subsequently formed to extend beyond the solid electrolyte layer, the insulating layer is already in place to prevent short circuits, enabling flexible via conductor installation without reliability compromise
Application Domain
Data Source
AI summary:
The proposed solid electrolytic capacitor design includes an anode plate with a porous layer, a dielectric layer, a solid electrolyte layer, a conductor layer, and an insulating layer that covers at least a part of the end portion of the solid electrolyte layer, thereby reducing the risk of short circuits and enhancing flexibility in conductor placement.
Abstract
A solid electrolytic capacitor that includes: an anode plate including a porous layer at least on at least one a main surface thereof; a dielectric layer on a surface of the porous layer; a solid electrolyte layer on a surface of the dielectric layer; a conductor layer on a surface of the solid electrolyte layer; and an insulating layer on the surface of the dielectric layer, wherein the insulating layer covers at least a part of an end portion of the solid electrolyte layer in a region surrounding the solid electrolyte layer.