Multilayer Ceramic Electrode Curvature for Higher Capacitance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing multilayered ceramic electronic components face challenges in enhancing electrical characteristics, such as capacitance, while maintaining insulation reliability under size constraints due to variations in ceramic portion thickness affecting electrode separation.
Innovation Solution
The multilayered ceramic electronic component design incorporates specific surface profiles with controlled warpage and electrode configurations, including internal electrode layers, to enhance effective electrode lengths without compromising insulation reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If large undulations are given to the internal electrode to improve displacement performance, then electrical characteristics improve, but thickness variation of the ceramic portion increases causing insulation reliability deterioration
Solution Approach 1:
The internal electrode is designed with a curved surface profile including warpage of 2 μm or more in the thickness direction, replacing a flat surface. This curvature increases the effective electrode length without causing excessive thickness variation in the ceramic portion, thereby improving electrical characteristics while maintaining insulation reliability.
Solution Approach 2:
The surface profile parameters of the internal electrode are optimized by controlling the warpage amount to be 2 μm or more in the thickness direction. This parameter change allows the electrode to achieve longer effective length for improved capacitance while keeping the ceramic portion thickness variation within acceptable limits for insulation reliability.
2Reliability
If the size of the multilayered ceramic electronic component is constrained, then compactness is achieved, but electrical characteristics such as capacitance are limited
Solution Approach 1:
By introducing warpage of 2 μm or more in the thickness direction to the internal electrode surface, the effective electrode length is extended within the constrained component size. The curved profile allows the electrode to utilize the available space more efficiently, increasing capacitance without increasing the overall component dimensions.
Solution Approach 2:
The internal electrode is designed with three-dimensional curvature rather than a flat two-dimensional surface. This dimensional change in the electrode geometry allows for increased effective surface area and length within the same footprint, improving electrical characteristics while maintaining compact size constraints.
Data Source
AI summary
A ceramic portion has a first surface and a second surface opposed to each other in a thickness direction. A first electrode includes a first portion disposed on the first surface. A second electrode includes a second portion disposed on the second surface. Each of the first surface and the second surface of the ceramic portion includes: a width dimension in a width direction; a length dimension in a length direction, the length dimension being larger than the width dimension and smaller than or equal to 1 mm; and a surface profile along the length direction, the surface profile including warpage of 2 μm or more in the thickness direction.