Multilayer Capacitor Array Electrode Configuration for Stress Distribution
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Solution Overview
Problem
Concentration of stresses between capacitors in multilayer capacitor arrays leads to distortion and potential damage due to electrostriction, as existing designs lack effective stress distribution mechanisms.
Innovation Solution
The multilayer capacitor array design incorporates inner electrodes arranged in a specific orthogonal configuration with terminal electrodes, where some electrodes are in contact with a reference plane and others are separated, distributing electrostriction-induced stresses and preventing excessive distortion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If inner electrodes are arranged in a row with gaps between them, then capacitor separation is achieved, but stress concentration occurs at the gap areas
Solution Approach 1:
A reference plane is introduced as an intermediary structure between the first and second electrode groups. This reference plane acts as a mediator that receives and distributes electrostriction stresses from adjacent capacitors, preventing stress concentration at the gaps between inner electrodes while maintaining capacitor separation.
Solution Approach 2:
The arrangement parameters of inner electrodes are changed by positioning some electrodes (first and third) to contact the reference plane while separating others (second and fourth) by a predetermined distance. This parameter variation creates a stress distribution pattern that prevents concentration at gap areas.
2Use of energy by moving object
If voltage is applied to capacitors, then electrostriction occurs, but distortion and stress concentration damage the capacitor structure
Solution Approach 1:
The reference plane serves as a stress-absorbing intermediary that intercepts electrostriction forces before they can concentrate and damage the capacitor structure. By positioning inner electrodes to contact or be near this reference plane, the harmful stresses are distributed across a larger area.
Solution Approach 2:
The reference plane converts the harmful electrostriction stresses into a beneficial distributed force pattern. Instead of allowing stresses to concentrate at gap areas and cause damage, the reference plane redirects these forces in a way that maintains structural integrity while still allowing electrostriction to occur.
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
This design effectively distributes electrostriction-induced stresses, reducing the risk of damage from distortion and vibration, while maintaining capacitor functionality.
Implementation Method 1
When a voltage is applied to the multilayer capacitor array, however, a distortion corresponding to the applied voltage occurs in each of the capacitors, so that stresses caused by the distortions of the capacitors are concentrated
Data Source
AI summary
A multilayer capacitor array comprises a capacitor body having rectangular first and second main faces opposing each other. In the capacitor body having a dielectric characteristic, a first electrode group including first and second inner electrodes and a second electrode group including third and fourth inner electrodes are arranged in a row. The first and third inner electrodes are arranged in contact with a reference plane parallel to the opposing direction of the first and second main faces between the first electrode group and second electrode group. The second and fourth inner electrodes are arranged such as to be separated from the reference plane by a predetermined distance.