Multilayer Capacitor Internal Electrode Segmentation
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Solution Overview
Problem
Existing multilayer capacitors face challenges in reducing resistance and increasing the quality factor Q, as internal electrodes are only electrically connected through terminal electrodes, limiting the decrease in resistance and subsequent increase in Q.
Innovation Solution
A multilayer capacitor design where first and second internal electrodes are laminated with dielectric layers, featuring electrode portions and connection portions to facilitate electrical connections between them, allowing for multiple paths for electric current flow and reduced resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If internal electrodes are connected only through terminal electrodes, then the structure is simple, but the resistance cannot be sufficiently decreased
Solution Approach 1:
The internal electrodes are divided into multiple electrode portions (first, second, third electrode portions) that are spatially separated by dielectric regions. This segmentation allows the electrodes to be connected through multiple discrete connection portions rather than a single continuous path, reducing overall resistance while maintaining structural simplicity.
Solution Approach 2:
The patent introduces connection portions that extend in directions different from the laminating direction, creating additional dimensional pathways for current flow. This multi-dimensional connection approach reduces resistance without significantly increasing structural complexity.
2Ease of manufacture
If multiple electrode portions are connected through terminal electrodes only, then the manufacturing process is simple, but the quality factor Q cannot be sufficiently increased
Solution Approach 1:
Each internal electrode is segmented into multiple electrode portions connected by multiple connection portions, creating multiple parallel current paths. This segmentation increases the quality factor Q by reducing resistance while maintaining ease of manufacture through standardized lamination processes.
Solution Approach 2:
The patent uses composite structures combining dielectric layers and electrode portions with different orientations and connection methods. This composite approach optimizes both electrical performance (higher Q) and manufacturability by integrating multiple material functions into the lamination structure.
3Device complexity
If internal electrodes have single continuous structure, then the electrode structure is simple, but current flow paths are limited
Solution Approach 1:
The internal electrodes are divided into discrete electrode portions (first, second, third portions) separated by dielectric regions, with each portion connected through dedicated connection portions. This creates multiple independent current flow paths, enhancing current flow capability while keeping the overall structure relatively simple.
Solution Approach 2:
Connection portions are configured to extend in various directions including directions different from the laminating direction, creating three-dimensional current pathways. This multi-dimensional approach significantly increases current flow capability without proportionally increasing structural complexity.
Data Source
AI summary
A multilayer capacitor has a multilayer body, and first and second terminal electrodes. In the multilayer body first and second internal electrode are laminated with a dielectric layer in between. The first internal electrode includes first and second electrode portions with a dielectric region between them along the laminating direction of the multilayer body, and a connection portion for electrically connecting the first and second electrode portions. The second internal electrode includes first and second electrode portions with a dielectric region between them along the laminating direction of the multilayer body, and a connection portion for electrically connecting the first and second electrode portions. The first internal electrode is electrically connected to the first terminal electrode, and the second internal electrode to the second terminal electrode.