Multilayer Capacitor Electrode Layout to Prevent Short Circuits
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Multilayer ceramic capacitors face challenges in achieving smaller size and higher capacitance due to internal electrode thickness, which can lead to short circuits, reduced capacitance, and lower breakdown voltage, along with issues of internal electrode smoothness and connectivity.
Innovation Solution
A multilayer electronic component design with alternately disposed internal electrodes and dielectric layers, where the internal electrodes include conductor and cut-off portions, and a manufacturing method using coating offset printing to ensure uniform thickness and smoothness, enhancing connectivity and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the internal electrode thickness is reduced to achieve smaller size and higher capacitance, then the component size decreases and capacitance increases, but short circuit between internal electrodes occurs and reliability deteriorates
Solution Approach 1:
The patent applies local quality by creating a dual-structure internal electrode where the end portion has a different configuration than the main body. Specifically, the internal electrode includes a first end portion with reduced thickness and a second end portion with normal thickness, allowing different regions to serve different functions: the thinner first end portion reduces overall capacitance to achieve smaller size, while the thicker second end portion maintains reliability and prevents short circuits.
Solution Approach 2:
The internal electrode is segmented into multiple portions with different thicknesses along its length. This segmentation allows the electrode to have optimized local characteristics - the first end portion is thinner for size reduction while the second end portion maintains sufficient thickness for reliable electrical connection, thus resolving the contradiction between miniaturization and reliability.
2Quantity of substance
If the internal electrode thickness is reduced, then capacitance per unit volume increases, but breakdown voltage decreases
Solution Approach 1:
The patent implements local quality by varying the internal electrode thickness at different locations. The first end portion has reduced thickness to maximize capacitance density and reduce component size, while the second end portion maintains sufficient thickness to ensure adequate breakdown voltage and electrical strength, thus resolving the contradiction between capacitance density and breakdown voltage.
3Volume of moving object
If the internal electrode thickness is reduced, then component size decreases, but manufacturing precision requirements increase
Solution Approach 1:
The internal electrode is divided into segments with different thicknesses - a first end portion with reduced thickness and a second end portion with normal thickness. This segmentation allows the manufacturing process to focus precision on the second end portion which requires uniform thickness for reliable electrical connection, while the first end portion can have more relaxed tolerance, thus reducing overall manufacturing precision requirements while still achieving size reduction.
Data Source
AI summary
A multilayer electronic component according to an exemplary embodiment of the present disclosure may control connectivity of an end of an internal electrode, thereby suppressing occurrence of a short circuit between the internal electrodes, reduced capacitance or lower breakdown voltage.