Multilayer Capacitor With Spatially Separated Inner Electrodes
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Solution Overview
Problem
The existing multilayer capacitors require two separate units for noise suppression in two-line transmission lines, leading to space constraints on circuit boards and increased susceptibility to crosstalk when integrated into a single chip, which compromises noise absorption capabilities.
Innovation Solution
A multilayer capacitor design featuring a capacitor element body with multiple insulator layers and inner electrodes arranged in a specific configuration to form two capacitors within a single chip, with non-overlapping inner electrodes and shared terminal electrodes, reducing crosstalk and allowing for a smaller footprint.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If two multilayer capacitors are fabricated into a single chip to reduce mounting area, then the device size is reduced, but crosstalk occurs between capacitors which reduces noise absorption effectiveness
Solution Approach 1:
The capacitor element body is divided into two distinct regions with separate inner electrode arrangements. The first and second inner electrodes are positioned at different locations in the opposing direction of main faces and side faces, creating spatially separated capacitor units that minimize electromagnetic interference while maintaining compact form factor
Solution Approach 2:
Different regions of the capacitor element body are designed with different electrode configurations optimized for their specific functions. The first capacitor uses first and second inner electrodes while the second capacitor uses third and fourth inner electrodes, with each region's electrode arrangement tailored to minimize crosstalk while achieving the desired capacitance value
2Object-affected harmful factors
If two separate multilayer capacitors are used for noise suppression in two-line transmission lines, then crosstalk is minimized, but the mounting area increases
Solution Approach 1:
Two separate multilayer capacitor units are merged into a single integrated capacitor element body while maintaining distinct inner electrode arrangements for each capacitor. The shared terminal electrodes are positioned on side faces while the inner electrodes are spatially separated, achieving miniaturization without significant crosstalk
Solution Approach 2:
The capacitor design utilizes three-dimensional spatial arrangement of inner electrodes within the element body. By positioning electrodes at different locations in both the opposing direction of main faces and the opposing direction of side faces, the design achieves compact integration while maintaining electrical isolation between capacitor units
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 suppresses crosstalk between capacitors while minimizing the physical size of the multilayer capacitor, enabling efficient noise absorption and reduced space requirements on circuit boards.
Implementation Method 1
a plurality of insulator layers laminated in the opposing direction of the first and second main faces
Implementation Method 2
the first and third inner electrodes have an overlapping area therebetween when seen in the opposing direction of the first and second main faces; and wherein the second and fourth inner electrodes have an overlapping area therebetween
Data Source
AI summary
A multilayer capacitor has a first inner electrode connected to a first terminal electrode, a second inner electrode connected to a second terminal electrode, and third and fourth inner electrodes connected to third and fourth terminal electrodes. The first and second inner electrodes have no overlapping area therebetween when seen in the opposing direction of the first and second main faces and are arranged at respective positions different from each other in the opposing direction of the first and second main faces and in the opposing direction of the first and second side faces. The third and fourth inner electrodes have no overlapping area therebetween when seen in the opposing direction of the first and second main faces and are arranged at respective positions different from each other in the opposing direction of the first and second main faces and in the opposing direction of the first and second side faces. The first and third inner electrodes have an overlapping area therebetween when seen in the opposing direction of the first and second main faces. The second and fourth inner electrodes have an overlapping area therebetween when seen in the opposing direction of the first and second main faces.