Ceramic Capacitor Composition for ESD-Resistant Miniaturization
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Solution Overview
Problem
Conventional ceramic components face challenges in miniaturization as size reduction leads to increased sensitivity to electrostatic discharges (ESD), rendering them unusable, and existing materials do not effectively maintain electrical properties at reduced sizes.
Innovation Solution
A ceramic component with a base body composed of a material with the empirical formula AxByC1−x−vTi1−y+wO3*(Mn2P2O7)z*Du, incorporating specific dopants and additives, including manganese pyrophosphate, which allows for reduced sintering temperatures and improved electrical and mechanical properties, and the use of nickel-containing inner electrodes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the size of ceramic structural parts is reduced to meet miniaturization requirements, then the compactness and integration density are improved, but the sensitivity to electrostatic discharges (ESD) increases and electrical properties deteriorate
Solution Approach 1:
The patent modifies the chemical composition parameters of the ceramic material by introducing specific dopants (lanthanum, neodymium, praseodymium, cerium) and additives (manganese pyrophosphate, aluminum, nickel, iron compounds) to change the electrical properties and ESD resistance of the miniaturized ceramic component, allowing it to maintain reliability at reduced sizes
Solution Approach 2:
The patent creates a composite ceramic material system combining base ceramic materials with multiple dopants and additives, where each component contributes specific properties: the rare earth dopants modify grain boundary characteristics, manganese pyrophosphate controls sintering behavior, and metal compounds enhance electrical stability, collectively improving ESD resistance in miniaturized structures
2Ease of manufacture
If conventional ceramic materials are used in miniaturized structures, then manufacturing simplicity is maintained, but electrical properties and performance are compromised
Solution Approach 1:
The patent adjusts material composition parameters while maintaining compatibility with existing ceramic manufacturing processes, using standard doping techniques and sintering methods to achieve improved electrical properties without fundamentally changing the manufacturing approach
3Reliability
If high-impedance layers are added to protect against ESD as in prior art, then ESD resistance is improved, but device complexity and manufacturing steps increase
Solution Approach 1:
The patent combines multiple functions into the base ceramic material itself: the dopants and additives simultaneously provide ESD resistance, control sintering behavior, maintain electrical properties, and ensure mechanical stability, eliminating the need for separate protective layers or additional structural components
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
The solution provides a robust and cost-effective multilayer capacitor that is less prone to ESD, maintaining performance even at small sizes, with improved electrical and mechanical properties and reduced production costs.
Implementation Method 1
manganese pyrophosphate, which allows for reduced sintering temperatures
Implementation Method 2
manganese pyrophosphate, which allows for reduced sintering temperatures
Data Source
AI summary
A ceramic component having a ceramic main part containing AxByC1−x−vTi1−y+wO3*(Mn2P2O7)z*Du, in which A is a first dopant selected from a group including neodymium, praseodymium, cerium, and lanthanum, B is a second dopant selected from a group including niobium, tantalum, and vanadium, C is selected from a group including calcium, strontium, and barium, and D includes a metal selected from a group including aluminum, nickel, and iron. x is the proportion of A, y is the proportion of B, v is the proportion of A vacancies, w is the proportion of excess titanium, z is the proportion of Mn2P2O7, u is the proportion of D, and the following applies: 0.0≤x<0.1, 0.0≤y<0.1, 0≤v<1.5*x, 0≤w<0.05, 0.01≤z<0.1, 0≤u<0.05. A method for producing the ceramic component is also disclosed.