Multilayer Electronic Component Cover With Oxidized Dummy Electrode
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Solution Overview
Problem
Existing multilayer ceramic capacitors face issues with adhesion and mechanical strength due to gaps between the dummy electrode and insulating layers, which can be affected by plating solutions and environmental factors, impacting electrical and mechanical characteristics.
Innovation Solution
Incorporating an oxidation region in the dummy electrode within the multilayer structure to increase the volume of the dummy electrode, enhancing adhesion with insulating layers and reducing gaps, thereby improving the mechanical strength and resistance to environmental factors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a dummy electrode is provided in the cover for metal deposition, then the outer electrode can be formed by plating method, but gaps between the dummy electrode and insulating layers cause poor adhesion and reduced mechanical strength
Solution Approach 1:
The patent applies parameter changes by forming an oxidation region in the dummy electrode through controlled oxidation treatment. This changes the physical and chemical parameters of the dummy electrode surface, creating a rougher surface morphology and oxidized chemical composition that significantly improves adhesion to the insulating layers, thereby resolving the gap and adhesion problems while maintaining the plating function
Solution Approach 2:
The patent creates a composite structure by combining the dummy electrode material with an oxidation layer. This composite material structure integrates the conductive properties of the dummy electrode with the adhesive properties of the oxidation layer, enabling both metal deposition function and improved mechanical strength without compromising either aspect
2Ease of manufacture
If the dummy electrode is positioned between insulating layers, then it contributes to metal deposition, but gaps allow exposure to plating solutions and environmental factors affecting electrical characteristics
Solution Approach 1:
The oxidation treatment changes the surface parameters of the dummy electrode, creating a dense oxidized layer that eliminates gaps and provides environmental barrier protection. This parameter change ensures the dummy electrode remains protected from plating solutions and environmental factors while maintaining its metal deposition function
Solution Approach 2:
The patent converts the potential harm of oxidation (which could increase electrical resistance) into a benefit by controlling the oxidation to occur only in specific regions of the dummy electrode. The oxidation region is strategically positioned to provide adhesion and protection without compromising the electrical conductivity needed for metal deposition, thus turning a potentially harmful effect into a beneficial one
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The oxidation region in the dummy electrode enhances adhesion, reducing the likelihood of gaps and exposure to plating solutions, thus improving the mechanical and electrical characteristics of the capacitor.
Implementation Method 1
The dummy electrode includes at least one oxidation region
Data Source
AI summary
A multilayer electronic component includes an effective portion and a cover. The effective portion includes a dielectric layer and an inner electrode that are stacked alternately in a stacking direction. The cover overlaps the effective portion in the stacking direction. The cover includes multiple insulating layers and a dummy electrode. The multiple insulating layers are stacked in the stacking direction. The dummy electrode is positioned between the multiple insulating layers. The dummy electrode includes at least one oxidation region.