Multilayer Ceramic Condenser Electrode Segmentation

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Solution Overview

Problem

The challenge in manufacturing multilayer ceramic condensers is to improve printing resolution for miniaturization and high integration while ensuring reliable connectivity and durability, particularly in reducing the steps between dielectric layers and enhancing insulating resistance.

Innovation Solution

The method involves printing stripe-type inner electrode patterns and line patterns on ceramic green sheets in the major-axis direction, with specific interval and width constraints, and stacking them alternately to form a multilayer main body with dummy patterns that reduce interlayer density and prevent short-circuits, thereby improving printing resolution and coverage of dielectric layers.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Quantity of substance

If the number of stacked dielectric layers is increased to achieve high capacity and miniaturization, then the capacitance value increases and the size decreases, but the printing resolution of inner electrode patterns deteriorates and manufacturing complexity increases

Engineering Contradiction:

Improvecapacitance valueVSAvoidprinting resolution

Core Design Contradiction:

Quantity of substanceVSManufacturing precision

Solution Approach 1:

The patent divides the electrode structure into two distinct pattern types: stripe-type inner electrode patterns for capacitance generation and line patterns (dummy patterns) for structural support and step removal. This segmentation allows independent optimization of each pattern type, enabling high printing resolution even with increased stacking layers.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent introduces line patterns as a separate dimensional element between the stripe-type electrode patterns. These line patterns extend in the major-axis direction and create a grid-like structure that provides mechanical support and facilitates step removal, enabling higher stacking counts without compromising printing resolution.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Volume of moving object

If the thickness of dielectric layers is reduced to achieve miniaturization, then the condenser size decreases, but the steps between dielectric layers increase and connectivity reliability deteriorates

Engineering Contradiction:

Improvecondenser sizeVSAvoidconnectivity reliability

Core Design Contradiction:

Volume of moving objectVSReliability

Solution Approach 1:

The patent performs preliminary step removal by forming line patterns that extend beyond the edges of adjacent stripe-type electrode patterns. These line patterns are designed to be removed after stacking, preemptively eliminating the steps that would form between dielectric layers before final assembly, thereby ensuring reliable connectivity.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The line patterns serve as intermediary structures between dielectric layers during the stacking process. They provide temporary mechanical support and alignment references, and their removal creates clean interfaces between layers, ensuring reliable electrical connectivity without steps.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Quantity of substance

If the stacking amount of dielectric layers is increased to achieve high capacity, then the capacitance value increases, but the insulating resistance decreases and durability deteriorates

Engineering Contradiction:

Improvecapacitance valueVSAvoidinsulating resistance

Core Design Contradiction:

Quantity of substanceVSReliability

Solution Approach 1:

The patent applies different pattern qualities to different regions: stripe-type patterns provide high-capacitance electrode areas while line patterns provide insulating separation and structural support. This local differentiation ensures that high stacking counts for increased capacitance do not compromise insulating resistance, as the line patterns maintain proper spacing and prevent short circuits.

Inventive Principle:

Principle #3Local quality

4Volume of moving object

If the width of inner electrode patterns is reduced to achieve miniaturization, then the condenser size decreases, but the printing resolution deteriorates and manufacturing difficulty increases

Engineering Contradiction:

Improvecondenser sizeVSAvoidmanufacturing difficulty

Core Design Contradiction:

Volume of moving objectVSEase of manufacture

Solution Approach 1:

The patent segments the electrode system into stripe-type patterns (for capacitance) and line patterns (for structure). This segmentation allows the stripe patterns to be optimized for miniaturization with reduced width while the line patterns provide a coarser structural framework that is easier to manufacture and print with high resolution.

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS9595392B2Multilayer ceramic condenser and method of manufacturing the same

Publication Date: 2017.03.14 SAMSUNG ELECTRO MECHANICS CO LTD

AI summary

Disclosed are a multilayer ceramic condenser and a method of manufacturing the same. The method includes printing a plurality of stripe-type inner electrode patterns in parallel on ceramic green sheets; forming a laminate by staking the ceramic green sheets having the plurality of stripe-type inner electrode patterns printed thereon; cutting the laminate in order to have a structure in which first and second inner electrode patterns are alternately stacked; and forming a first side part and a second side part by applying ceramic slurry in order to cover the sides of the laminate to which the first and second inner electrode patterns are exposed.