Multilayer Capacitance Element with Segmented Electrodes

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Solution Overview

Problem

Miniaturization of multilayer capacitance elements leads to increased electrode resistance, resulting in a reduced Q value, which affects the performance of electronic devices.

Innovation Solution

The design includes a capacitance element with a specific configuration of electrodes and dielectric layers, where signals of different polarities are applied to form capacitors between certain electrode pairs, while signals of the same polarity are applied to other electrode pairs without forming capacitors, allowing for a greater number of internal electrodes and reduced electrode resistance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Volume of moving object

If the multilayer capacitance element is miniaturized, then the size is reduced, but the electrode resistance increases

Engineering Contradiction:

Improvesize of capacitance elementVSAvoidelectrode resistance

Core Design Contradiction:

Volume of moving objectVSReliability

Solution Approach 1:

The capacitance element is divided into multiple capacitor units, each with its own internal electrodes. By segmenting the overall capacitance into multiple smaller capacitor units connected in parallel, the patent reduces the electrode resistance of each individual unit while maintaining the total capacitance value. This segmentation allows each electrode to have sufficient area for low resistance despite the overall miniaturization of the component.

Inventive Principle:

Principle #1Segmentation

2Volume of moving object

If the multilayer capacitance element is miniaturized, then the size is reduced, but the Q value is reduced

Engineering Contradiction:

Improvesize of capacitance elementVSAvoidQ value

Core Design Contradiction:

Volume of moving objectVSReliability

Solution Approach 1:

Inventive Principle:

Principle #1Segmentation

3Reliability

If the number of internal electrodes is increased, then the electrode resistance is reduced, but the device complexity increases

Engineering Contradiction:

Improveelectrode resistanceVSAvoidnumber of internal electrodes

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent merges adjacent internal electrodes of the same polarity to form common electrodes. For example, multiple second electrodes are connected together to form a single common electrode, and multiple fourth electrodes are connected together to form another common electrode. This merging reduces the number of separate electrode structures while still achieving the desired parallel connection of multiple capacitor units, thereby reducing device complexity.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The common electrodes serve multiple functions: they act as shared terminals for multiple capacitor units, provide electrical connection for parallel connections, and reduce the overall number of electrode structures needed. This multi-functionality allows the patent to achieve low electrode resistance without proportionally increasing device complexity.

Inventive Principle:

Principle #6Universality (Multi-functionality)

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 enhances the performance of multilayer capacitance elements by reducing electrode resistance and maintaining a higher Q value, enabling smaller, higher-performance capacitors with easier manufacturing and lower costs.

Implementation Method 1

a first dielectric layer, a second dielectric layer, and a third dielectric layer are alternately stacked

Methodology Applied

Scientific EffectCapacitance: Capacitance

Implementation Method 2

each of which a dielectric layer and an internal electrode are alternately stacked

Methodology Applied

Scientific EffectDielectric: Dielectric

Data Source

PatentUS8884720B2Capacitance element and resonance circuit

Publication Date: 2014.11.11 DEXERIALS CORP

AI summary

A capacitance element includes a first electrode, a second electrode, a third electrode, a fourth electrode, a first dielectric portion, a second dielectric portion, and a third dielectric portion. To the first electrode, a signal having a first polarity is applied. To the second electrode, a signal having a second polarity is applied. The second polarity is opposite to the first polarity. To the third electrode, the signal having the second polarity is applied. The third electrode is disposed on a position opposed to the second electrode. To the fourth electrode, the signal having the first polarity is applied. The first dielectric portion is provided between the first electrode and the second electrode. The second dielectric portion is provided between the second electrode and the third electrode. The third dielectric portion is provided between the third electrode and the fourth electrode.