Capacitor Conductors with Grooves for Noise Reduction
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Solution Overview
Problem
Existing electronic components with stacked dielectric layers and capacitor conductors face challenges in reducing vibration noise while maintaining capacitance values, as previous designs either fail to sufficiently suppress noise or compromise capacitance due to structural limitations.
Innovation Solution
The electronic component features a laminate structure with stacked dielectric layers and capacitor conductors, where the capacitor conductors include linear portions with recessed grooves that overlap with outer electrodes, preventing electric-field-induced strains and vibrations, and outer electrodes are positioned only on the mounting surface, minimizing capacitance reduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If cutouts are formed in inner electrodes near outer electrode edges to reduce vibration noise, then vibration noise is reduced, but capacitance value decreases
Solution Approach 1:
The patent applies local quality by forming grooves only in specific regions of the inner electrodes - namely in areas overlapping with outer electrodes - while maintaining the full extent of inner electrodes in other regions. This localized modification reduces vibration noise through the groove structure without creating large cutouts that would significantly reduce capacitance, thus resolving the contradiction between noise reduction and capacitance preservation
Solution Approach 2:
The patent segments the inner electrode structure by introducing grooves that divide the electrode material into distinct regions. These grooves create a segmented structure in the overlapping areas with outer electrodes, which reduces the continuous electrode mass that causes vibrations, while the overall electrode coverage and capacitance are maintained through the segmented design
2Quantity of substance
If inner electrodes are positioned close to outer electrodes to increase capacitance, then capacitance value increases, but vibration noise increases
Solution Approach 1:
The patent applies local quality by differentiating the inner electrode structure in two ways: (1) positioning inner electrodes close to outer electrodes in regions where capacitance is needed, and (2) introducing grooves only in regions where outer electrodes overlap with inner electrodes. This allows the structure to simultaneously achieve high capacitance through close positioning while reducing vibration noise through localized grooving in the overlapping regions
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 reduces vibration noise and prevents capacitance value reduction by inhibiting electric-field-induced strains and vibrations, while maintaining a stable capacitance, as demonstrated by experimental results showing significant noise reduction and preserved capacitance values.
Implementation Method 1
when an AC voltage is applied to the electronic component, electric-field-induced strains are generated in the dielectric layers due to the applied voltage
Data Source
AI summary
In an electronic component, capacitor conductors include linear portions parallel or substantially parallel to a lower surface of a laminate, and lead-out portions led out respectively from the linear portions to the lower surface. Outer electrodes are disposed on the lower surface and cover exposed portions where the lead-out portions are exposed at the lower surface, respectively. At least one of the linear portions includes a groove, which is recessed in a direction away from the lower surface, in a region thereof overlapping with the corresponding outer electrode when looking at the electronic component in a plan view from a z-axis direction.