Ceramic Electronic Component Split Inner Electrode Moisture Resistance
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Solution Overview
Problem
The miniaturization of ceramic electronic components has made it difficult to precisely form outer electrodes, leading to reduced moisture resistance due to moisture ingress between the outer electrode and the ceramic element, which affects the insulation resistance.
Innovation Solution
A ceramic electronic component design featuring a ceramic element with inner and auxiliary electrodes, where the outer electrode is formed by a plated film covering the inner and auxiliary electrodes, extending the path of moisture entry and enhancing adhesive strength, thereby increasing moisture resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the outer electrode is formed directly by plating on the ceramic element, then the manufacturing precision of the outer electrode is improved, but the moisture resistance is worsened due to moisture ingress between the outer electrode and ceramic element
Solution Approach 1:
The patent introduces an auxiliary electrode as an intermediary layer between the inner electrode and the outer plated electrode. This auxiliary electrode acts as a barrier that prevents moisture from reaching the inner electrode through the interface between the outer electrode and ceramic element, thereby resolving the contradiction between precise outer electrode formation and moisture resistance
Solution Approach 2:
The electrode structure is segmented into multiple functional layers: the inner electrode for electrical connection, the auxiliary electrode for moisture barrier function, and the outer plated electrode for precise formatting and connection. This segmentation allows each layer to perform its specific function independently, maintaining both manufacturing precision and moisture resistance
2Productivity
If the ceramic electronic component is miniaturized, then the productivity is improved, but the manufacturing precision of outer electrodes is worsened making it difficult to precisely form them
Solution Approach 1:
By dividing the electrode system into inner, auxiliary, and outer electrodes with distinct functions, the patent enables precise formation of the outer electrode through plating while the auxiliary electrode provides the necessary moisture barrier, allowing miniaturization without sacrificing precision
Solution Approach 2:
The auxiliary electrode serves as a mediator that enables the outer electrode to be precisely formed through plating while maintaining moisture resistance, even in miniaturized components where the interface area is reduced and more susceptible to moisture ingress
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 design effectively increases the ceramic electronic component's moisture resistance and adhesive strength, preventing a decrease in insulation resistance and ensuring reliable connectivity.
Implementation Method 1
The outer electrode is defined by a plated film
Data Source
AI summary
A ceramic electronic component includes a ceramic element, a first inner electrode, a second inner electrode, an outer electrode, and a first auxiliary electrode. The first auxiliary electrode extends to a first surface of the ceramic element. The first inner electrode extends along a first direction on the first surface. The first auxiliary electrode extends outward from the region where the first inner electrode is disposed in the first direction on the first surface. The outer electrode covers the first inner electrode and the first auxiliary electrode.