Multilayer Ceramic Capacitor Structure to Prevent Electrode Shorting
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Solution Overview
Problem
Short circuiting frequently occurs between internal electrode layers in multilayer ceramic capacitors, compromising their reliability.
Innovation Solution
Incorporating a segregation of silica (Si) in the vicinity of the internal electrode layer ends, with a smaller average particle size of dielectric particles near the ends compared to the central portions, to prevent moisture penetration and reduce short circuiting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the number of laminated dielectric ceramic layers is increased and the thickness is reduced to achieve high capacitance, then the capacitance increases, but short circuiting between internal electrode layers becomes more likely
Solution Approach 1:
The patent applies local quality by creating a segregation of Si in the dielectric ceramic layer specifically at the vicinity of internal electrode layer ends, while maintaining different average particle sizes of dielectric particles in different regions (smaller near ends, larger in central portions). This localized structural differentiation prevents short circuiting at critical areas without compromising overall capacitance
Solution Approach 2:
The patent uses composite materials by combining dielectric particles of different average particle sizes within the same dielectric ceramic layer, and incorporating Si segregation, to create a multi-functional structure that simultaneously achieves high capacitance and prevents short circuiting
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 significantly reduces or prevents short circuiting between internal electrode layers, enhancing the reliability of multilayer ceramic capacitors while maintaining high capacitance.
Implementation Method 1
Incorporating a segregation of silica (Si) in the vicinity of the internal electrode layer ends, with a smaller average particle size of dielectric particles near the ends compared to the central portions, to prevent moisture penetration and reduce short circuiting
Data Source
AI summary
A multilayer ceramic capacitor includes a multilayer body including the dielectric ceramic layers and the internal electrode layers which are laminated, and external electrodes connected to the internal electrode layers. The multilayer body includes segregation including Si as a main component in a vicinity of an end of the internal electrode layer in a width direction. An average particle size of the dielectric particles in the vicinity of the end of the internal electrode layer in the width direction in the dielectric ceramic layer is smaller than an average particle size of a dielectric particles in a central portion of the internal electrode layer in the width direction in the dielectric ceramic layer.