Multilayer Electronic Component Asymmetric Outer Electrodes
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Solution Overview
Problem
In electronic components with multilayer structures, such as chip type CR composite arrays, the formation of outer electrodes with identical shapes can lead to issues like stray capacitance, parasitic inductance, eddy-current loss, and interference due to their influence on the inner conductor's magnetic field, limiting flexibility in impedance design.
Innovation Solution
The electronic component features a multilayer body with inner conductors extended to side surfaces and outer electrodes formed on a single side surface, differing in shape or location, minimizing their area and avoiding overlap with inner conductor extensions to reduce stray capacitance and parasitic inductance, and allowing for adjustable impedance by varying electrode lengths and widths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If outer electrodes are formed with identical shapes extending from one principal surface to the other principal surface, then manufacturing is simplified, but stray capacitance increases, parasitic inductance increases, and magnetic field interference occurs
Solution Approach 1:
The patent applies asymmetry by forming outer electrodes with different shapes on different side surfaces of the multilayer body. Specifically, outer electrodes on first and second opposite side surfaces have a first shape, while outer electrodes on third and fourth opposite side surfaces have a second shape different from the first. This asymmetric configuration reduces stray capacitance and parasitic inductance while maintaining manufacturing feasibility through standardized formation processes.
Solution Approach 2:
The patent applies local quality by making outer electrodes extend only from one principal surface to the other principal surface locally, rather than forming continuous electrodes across all surfaces. The outer electrodes are positioned to extend from one principal surface to the other at specific side surfaces, creating localized electrode regions that reduce overall stray capacitance and magnetic field interference while maintaining necessary electrical connections.
2Ease of manufacture
If outer electrodes are formed with identical shapes extending from one principal surface to the other principal surface, then manufacturing is simplified, but parasitic inductance increases
Solution Approach 1:
The patent applies asymmetry by forming outer electrodes with different shapes on different side surfaces of the multilayer body. Specifically, outer electrodes on first and second opposite side surfaces have a first shape, while outer electrodes on third and fourth opposite side surfaces have a second shape different from the first. This asymmetric configuration reduces stray capacitance and parasitic inductance while maintaining manufacturing feasibility through standardized formation processes.
Solution Approach 2:
The patent applies local quality by making outer electrodes extend only from one principal surface to the other principal surface locally, rather than forming continuous electrodes across all surfaces. The outer electrodes are positioned to extend from one principal surface to the other at specific side surfaces, creating localized electrode regions that reduce overall stray capacitance and magnetic field interference while maintaining necessary electrical connections.
3Ease of manufacture
If outer electrodes are formed with identical shapes extending from one principal surface to the other principal surface, then manufacturing is simplified, but eddy-current loss increases due to magnetic field blocking
Solution Approach 1:
The patent applies local quality by making outer electrodes extend only from one principal surface to the other principal surface locally, rather than forming continuous electrodes across all surfaces. The outer electrodes are positioned to extend from one principal surface to the other at specific side surfaces, creating localized electrode regions that reduce overall stray capacitance and magnetic field interference while maintaining necessary electrical connections.
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 configuration minimizes the impact of outer electrodes on the component's characteristics, reduces stray capacitance and parasitic inductance, and enhances flexibility in impedance design, improving the overall performance and stability of the electronic component.
Implementation Method 1
the influence of a stray capacitance between an inner conductor and the outer electrodes
Implementation Method 2
the influence of a parasitic inductance in the outer electrodes
Implementation Method 3
an eddy-current loss caused as the outer electrodes block a magnetic field generated in the inner conductor
Data Source
AI summary
A multilayer body 12 is obtained by stacking a plurality of insulator layers in which an inner conductor and a via hole conductor are formed. Outer electrodes 42a through 42e connected to the inner conductor layers are formed on the opposite side surfaces of the multilayer body 12. While the two outer electrodes 42a and 42b are formed so as to extend from one principal surface to the other principal surface of the multilayer body 12, the other outer electrodes 42c through 42e are formed so as to extend from one principal surface to an exposed portion of the inner conductor on the multilayer body 12, or formed so as not to reach the other principal surface. In addition, the widths of the outer electrodes 42a through 42e may differ from one another.