Multilayer Ceramic Component Water Repellent Layer Design
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Solution Overview
Problem
Multilayer ceramic electronic components face challenges in preventing humidity permeation, which can lead to defects during manufacturing and usage, particularly in areas between the ceramic body and external electrodes.
Innovation Solution
A multilayer ceramic electronic component design that includes a water repellent layer with varying thicknesses to cover external surfaces, plating layers, and gaps between the ceramic body and electrodes, enhancing water repellency by focusing protection on vulnerable areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a uniform water repellent layer is applied over the entire ceramic body surface, then the manufacturing process is simple, but humidity permeation through vulnerable gap areas cannot be effectively prevented
Solution Approach 1:
The water repellent layer is designed with non-uniform thickness, featuring a first thickness for general coverage and a second greater thickness specifically for gap areas between external electrodes and ceramic body. This local differentiation concentrates water repellency performance where humidity permeation risk is highest, resolving the contradiction between reliability improvement and structural complexity.
2Reliability
If the water repellent layer thickness is increased uniformly across all surfaces, then water repellency is improved, but material consumption and manufacturing cost increase
Solution Approach 1:
Instead of uniformly increasing water repellent layer thickness across all surfaces, the invention applies greater thickness only to gap areas between external electrodes and ceramic body where humidity permeation occurs. This localized approach improves water repellency performance while minimizing material consumption and manufacturing cost.
Solution Approach 2:
The invention applies excessive thickness of water repellent layer only where necessary (in gap areas) rather than uniformly across all surfaces. This partial excessive action provides enhanced protection at critical locations while avoiding unnecessary material usage in areas where standard thickness suffices.
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 significantly improves water repellency performance, particularly in areas prone to humidity permeation, while maintaining manufacturing efficiency and cost-effectiveness.
Implementation Method 1
a water repellent layer including a first portion covering external surfaces of the first and second plating layers and a second portion covering at least one surface of the ceramic body
Data Source
AI summary
A multilayer ceramic electronic component includes a ceramic body including dielectric layers and first and second internal electrodes, first and second external electrodes disposed on first and second external surfaces of the ceramic body, respectively, the first and second external electrodes each including first and second base electrode layers having at least a portion in contact with first and second external surfaces of the ceramic body, respectively, and first and second plating layers, and a water repellent layer including a portion disposed to cover a gap between the ceramic body and the first and second plating layers, having a first thickness and a portion disposed to cover a surface of the ceramic body, to having a second thickness, smaller than the first thickness.