Laminated Capacitor Reinforcement via Thinner Dielectric Layers
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Solution Overview
Problem
Small laminated capacitors have inferior bending strength, making them prone to cracks and breaking when installed on circuit boards, and existing reinforcement methods either fail to improve strength effectively or increase the capacitor's height or reduce capacity.
Innovation Solution
A laminated capacitor design where additional internal electrode layers, connected to external electrodes via thinner dielectric layers not contributing to capacity, act as reinforcement layers, balancing mechanical strength and maintaining a compact size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If additional internal electrode layers are added to improve bending strength, then mechanical strength increases, but height dimension increases or capacity decreases
Solution Approach 1:
The patent applies local quality by making dielectric layers have different thicknesses based on their function. The first dielectric layer (contributing to capacity) has a specific thickness, while the second dielectric layer (for reinforcement) has a smaller thickness. This localized differentiation allows the reinforcement function to be achieved with minimal impact on overall height, resolving the contradiction between strength improvement and height control.
2Strength
If additional internal electrode layers are added to improve bending strength, then mechanical strength increases, but capacity decreases
Solution Approach 1:
The patent differentiates the function of different dielectric layers by assigning different thicknesses. The first dielectric layer maintains sufficient thickness to ensure capacity requirements are met, while the second dielectric layer uses minimal thickness solely for mechanical reinforcement. This local quality approach allows capacity to be preserved while still achieving the desired strength improvement.
3Stability of the object's composition
If metal reinforcement layers are added to capacitor body margins, then structural support increases, but bending strength does not improve significantly
Solution Approach 1:
The patent merges the reinforcement function with the existing internal electrode layer structure. Instead of adding separate metal reinforcement layers to margins, the invention utilizes additional internal electrode layers that are already electrically connected to external electrodes, integrating both electrical and mechanical functions into a single structure. This merging approach achieves bending strength improvement without requiring separate reinforcement components.
Data Source
AI summary
In a laminated capacitor, one additional first internal electrode layer, which has its edge connected to the first external electrode as do the first internal electrode layers, is provided to one of the five first internal electrode layers so as to face one another via the second dielectric layer having a thickness smaller than the thickness of the first dielectric layer and not contributing to the formation of capacity, and one additional second internal electrode layer, which has its edge connected to the second external electrode as do the second internal electrode layers, is provided to one of the five second internal electrode layers so as to face one another via the third dielectric layer having a thickness smaller than the thickness of the first dielectric layer and not contributing to the formation of capacity.