Ceramic Electronic Component Short-Circuit Prevention
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Solution Overview
Problem
Existing methods for manufacturing multilayer ceramic capacitors face challenges in maximizing capacitance while minimizing size, as they often result in inner electrodes being exposed on lateral surfaces, leading to a high risk of short-circuiting.
Innovation Solution
A method involving a ceramic body with inner electrodes exposed on end and lateral surfaces, where ceramic sections with higher concentrations of Ba, Mg, or rare-earth elements are formed between ceramic particles, reducing the risk of short-circuiting by controlling the growth and positioning of ceramic particles during firing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the area where inner electrodes face each other is increased to maximize capacitance, then the capacitance is improved, but the dimensions of the multilayer ceramic capacitor increase
Solution Approach 1:
The patent applies local quality by creating a protective ceramic layer with different composition (higher Ba, Mg, Mn, or rare-earth element content) specifically at the lateral surfaces where inner electrodes are exposed, while maintaining different composition in the central ceramic section. This localized differentiation allows the inner electrodes to be exposed laterally for capacitance while the protective layer prevents short-circuiting, enabling high capacitance in a compact form factor.
2Quantity of substance
If inner electrodes are exposed on lateral surfaces to maximize the facing area, then the capacitance is improved, but the risk of short-circuiting between inner electrodes increases
Solution Approach 1:
The patent introduces a protective ceramic layer as an intermediary substance between the exposed inner electrodes on the lateral surfaces. This layer, containing higher concentrations of Ba, Mg, Mn, or rare-earth elements, acts as a barrier that prevents direct contact and short-circuiting between adjacent inner electrodes while allowing the electrodes to remain exposed for capacitance function.
Solution Approach 2:
The patent changes the chemical composition parameters of the ceramic material by increasing the content of Ba, Mg, Mn, or rare-earth elements in the protective layer compared to the central ceramic section. This parameter change creates a protective barrier with different properties that prevents short-circuiting while maintaining the electrical function of the exposed inner electrodes.
3Volume of moving object
If the area of the remaining ceramic material is minimized to maintain compact size, then the dimensions are improved, but the structural integrity and insulation between inner electrodes may be compromised
Solution Approach 1:
The patent applies local quality by differentiating the ceramic material into two regions: a central ceramic section with standard composition for structural integrity, and protective layers at the lateral surfaces with enhanced composition (higher Ba, Mg, Mn, or rare-earth elements) for insulation and short-circuit prevention. This localized differentiation maintains overall structural integrity while providing enhanced protection where needed.
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
This approach effectively reduces the risk of short-circuiting between inner electrodes, allowing for increased capacitance while maintaining a compact size by carefully managing the distribution and concentration of ceramic constituents.
Implementation Method 1
The raw ceramic body is then fired with the raw ceramic portions provided thereon
Data Source
AI summary
A raw ceramic portion is formed on each of first and second lateral surfaces of a raw ceramic body. The raw ceramic portions contain ceramic particles and more of at least one constituent selected from Ba, Mg, Mn, and a rare-earth element between the ceramic particles than the ceramic section of the raw ceramic body in terms of total amount. The raw ceramic body is fired with the raw ceramic portions thereon. In this way, a ceramic electronic component is obtained that has a main body left after the raw ceramic body is fired with the raw ceramic portions thereon.