Series Capacitor Electrode Layout to Block Crack Short-Circuits
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Solution Overview
Problem
There is a need to improve the performance of electronic components with multiple capacitor portions connected in series, particularly in terms of reliability and prevention of short-circuiting due to cracks.
Innovation Solution
The electronic component design includes an element body with specific internal electrodes and terminal electrodes, where the third and fourth internal electrodes are electrically connected through an external connection conductor, and the first and second internal electrodes are arranged to face the third and fourth internal electrodes without direct connections, preventing crack propagation between capacitor portions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If internal electrodes are connected directly between capacitor portions, then manufacturing is simplified, but crack propagation causes short-circuiting between capacitor portions
Solution Approach 1:
The patent introduces an external connection conductor as an intermediary element that connects the third and fourth internal electrodes. This conductor is positioned outside the element body and serves as a mediator between capacitor portions, allowing electrical connection while preventing direct physical contact between internal electrodes of different capacitor portions, thus blocking crack propagation paths.
Solution Approach 2:
The connection path is moved from the internal dimension (inside the element body) to the external dimension (outside the element body). The third and fourth internal electrodes are drawn out to side surfaces and connected through an external connection conductor, changing the connection dimension from internal to external, which separates the connection function from the capacitor structure to prevent crack propagation.
2Reliability
If multiple capacitor portions are connected in series, then performance is improved, but detection of short-circuit failures in individual capacitor portions becomes difficult
Solution Approach 1:
The patent segments the electrical connection path by using separate internal electrodes (third and fourth) that are connected through an external connection conductor. This segmentation allows individual capacitor portions to be electrically isolated yet connected in series, enabling independent detection and measurement of each capacitor portion's status through the terminal electrodes and external connection conductor.
3Volume of moving object
If internal electrodes are arranged to face each other across capacitor portions, then compact design is achieved, but cracks can propagate along connection portions between capacitor portions
Solution Approach 1:
The external connection conductor acts as a mediator that connects internal electrodes without requiring them to be in direct physical contact. This allows the internal electrodes to be arranged compactly within the element body while the mediating external conductor prevents crack propagation between capacitor portions by providing a connection path outside the element body.
Data Source
AI summary
An electronic component includes: a first internal electrode provided in an element body; a second internal electrode provided in the element body; a third internal electrode provided in the element body and drawn out to a first side surface; and a fourth internal electrode provided in the element body and drawn out to a second side surface. The third internal electrode and the fourth internal electrode are electrically connected to each other through an external connection conductor formed on at least the first side surface and the second side surface. In a first direction, the first internal electrode faces the third internal electrode without facing the second internal electrode and the fourth internal electrode. In the first direction, the second internal electrode faces the fourth internal electrode without facing the first internal electrode and the third internal electrode.