Laminated Electronic Component Dummy Electrode Design
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Solution Overview
Problem
Existing multilayer capacitors face challenges in increasing equivalent series resistance (ESR) while maintaining adhesion of terminal electrodes and preventing short-circuit defects between internal and dummy electrodes with different polarities.
Innovation Solution
A laminated electronic component design featuring a terminal electrode on the side surface of an electronic component assembly with internal, extraction, and dummy electrodes, where the dummy electrodes have the same polarity as the internal electrodes and are strategically positioned to enhance adhesion and prevent short-circuit defects, while maintaining a minimal number of extraction electrodes to increase ESR.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the number of extraction electrodes is increased to improve adhesion of terminal electrodes, then adhesion is improved, but equivalent series resistance (ESR) decreases
Solution Approach 1:
The patent introduces a dummy electrode that is segmented from the internal electrode structure, allowing it to provide adhesion support without being electrically connected to the internal electrode. This segmentation enables the dummy electrode to contribute to terminal electrode adhesion while maintaining high ESR by keeping the extraction electrode count minimal.
Solution Approach 2:
The dummy electrode serves multiple functions: it provides adhesion support for the terminal electrode, maintains structural integrity during thermal shock, and prevents short-circuit defects. By making the dummy electrode multi-functional, the patent achieves improved adhesion without adding extraction electrodes that would reduce ESR.
2Strength
If internal electrode and dummy electrode with different polarity are provided in the same layer to improve adhesion, then adhesion is improved, but short-circuit defect may occur
Solution Approach 1:
The dummy electrode is segmented from the internal electrode structure and positioned separately within the same layer. This spatial segmentation ensures that the dummy electrode and internal electrode do not make contact, preventing short-circuit defects while still providing adhesion support for the terminal electrode.
Solution Approach 2:
The dummy electrode is strategically positioned in a specific local region of the same layer, separated from the internal electrode. This local quality approach allows the dummy electrode to provide adhesion in its specific location without interfering with the internal electrode's electrical function, thus preventing short-circuits.
3Reliability
If the number of layers is reduced to increase ESR, then ESR is increased, but adhesion of terminal electrode may be insufficient
Solution Approach 1:
By segmenting the dummy electrode from the internal electrode structure, the patent enables the dummy electrode to provide adhesion support independently. This allows reduction in the number of layers (increasing ESR) while the dummy electrode compensates for reduced adhesion that would normally come from multiple extraction electrodes.
Solution Approach 2:
The dummy electrode acts as an intermediary element between the terminal electrode and the ceramic element assembly. It provides the necessary adhesion support without requiring multiple extraction electrodes, thus allowing layer reduction for higher ESR while maintaining adequate adhesion.
Data Source
AI summary
The present invention is intended to provide a laminated electronic component having a configuration in which the number of extraction electrodes is reduced to realize a high ESR, the adhesion of a terminal electrode with respect to an ECA is increased and a short-circuit defect between an internal electrode and a dummy electrode can be prevented. An electrode layer in the ECA includes the internal electrode, the extraction electrode and the dummy electrode. One end of the extraction electrode is connected with the internal electrode in the same layer, and the other end of the same is led onto a side surface of the ECA 1 to be connected with the terminal electrode. This is also applied to other extraction electrodes. The dummy electrode is arranged apart from the internal electrode and the extraction electrode in the same layer, has one end led onto the side surface of the ECA to be connected with the terminal electrode and has the same polarity as seen from a relationship with the internal electrode in the same layer. This is also applied to other dummy electrodes.