Capacitive Device Stress Adjustment for Resonance Circuit
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing capacitive devices face challenges in accurately securing capacitance values and achieving sufficient variability rates, especially when used in electronic apparatuses, where inconsistent capacitances can lead to performance issues and require additional minimization and control mechanisms.
Innovation Solution
A capacitive device with a dielectric layer and capacitive electrodes, incorporating a stress adjustment portion to control stress within the dielectric layer, allowing for precise adjustment of capacitance and enhanced variability rates through the application of control voltages, thereby improving the performance of resonance circuits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a multilayer ceramic capacitor is minimized to reduce size, then the device size is reduced, but the capacitance value becomes difficult to control accurately
Solution Approach 1:
The patent applies parameter changes by controlling the stress state of the dielectric layer through residual stress engineering. By adjusting the stress parameter (compressive or tensile) during manufacturing, the dielectric constant and capacitance value are precisely controlled even in minimized device sizes. The stress adjustment portion modifies the physical state of the dielectric layer to achieve desired capacitance values.
2Volume of moving object
If the dielectric layer is minimized to reduce device size, then the device becomes more compact, but the capacity variability rate decreases
Solution Approach 1:
The patent uses parameter changes by applying stress to the dielectric layer to enhance its electrical characteristics. The stress adjustment portion modifies the dielectric constant and capacity variability rate by changing the stress parameter, allowing minimized devices to maintain high adaptability and responsiveness to control voltages.
3Quantity of substance
If a variable capacitive device uses a dielectric layer with high dielectric constant to increase capacitance, then the capacitance value increases, but the capacity variability rate becomes insufficient with small control voltages
Solution Approach 1:
The patent applies parameter changes by controlling the stress state of the dielectric layer. By adjusting the stress parameter through the stress adjustment portion, the dielectric layer exhibits enhanced capacity variability rate and responsiveness to small control voltages, while maintaining high capacitance values.
Solution Approach 2:
The patent implements feedback mechanisms where the stress adjustment portion responds to control voltages by modifying the stress state of the dielectric layer. This feedback loop enables precise control of capacitance values and enhances the capacity variability rate, allowing the device to adapt efficiently to small control voltage changes.
4Quantity of substance
If residual stress is imparted to the multilayer dielectric device body to increase dielectric constant, then the capacitance increases, but the stress control becomes complex
Solution Approach 1:
The patent applies preliminary action by incorporating the stress adjustment portion during the manufacturing process. The residual stress is engineered into the dielectric layer beforehand, and the stress adjustment portion is pre-configured to apply controlled stress. This preliminary setup simplifies subsequent stress control and enables easy adjustment of dielectric constant and capacitance values without complex control mechanisms.
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 capacitive device accurately adjusts capacitance values and increases capacity variability rates, leading to improved performance in resonance circuits by controlling stress and dielectric properties, addressing the limitations of existing technologies.
Implementation Method 1
by eventually imparting a residual stress to the multilayer dielectric device body of the produced multilayer ceramic capacitor, a dielectric constant and a capacitance to be acquired increase
Implementation Method 2
a pair of capacitive device electrodes that sandwich the dielectric layer and cause a desired electric field in the dielectric layer
Data Source
AI summary
To provide a capacitive device capable of accurately securing a capacitance value, a variable capacitive device capable of sufficiently securing a capacity variability rate, and a resonance circuit that uses the capacitive devices. A capacitive device includes a capacitive device body constituted of a dielectric layer and at least a pair of capacitive device electrodes that sandwich the dielectric layer and cause a desired electric field in the dielectric layer; and stress adjustment portions to adjust a stress caused in the dielectric layer of the capacitive device body.