Electrode Patterning Around Dielectric Defects in DEAP Layers
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Solution Overview
Problem
Existing dielectric electroactive polymer (DEAP) devices face limitations in achieving high electrical fields due to material defects, which lead to reduced energy output and increased failure probability, particularly in large volumes.
Innovation Solution
A method for manufacturing DEAP devices involves creating an area void of electrode material around defects in the dielectric polymer layer, using a patterned area layer to isolate the defect, and applying an adhesive sticker to ensure electrical insulation and repair, allowing for higher operating electrical fields and reduced failure probability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the dielectric polymer layer contains defects, then the device can be manufactured with standard materials, but the electrical breakdown strength and reliability are significantly reduced
Solution Approach 1:
The patent extracts and removes defects from the dielectric polymer layer by creating area voids around defect locations. This prevents electrical field concentration at defect sites, eliminating the harmful effect of defects on breakdown strength while maintaining the overall structure and function of the device.
Solution Approach 2:
The patent applies local quality by creating localized area voids only around defect locations rather than uniformly modifying the entire dielectric layer. This targeted approach maintains high breakdown strength in defect-free regions while protecting specific defect areas, optimizing the overall reliability without unnecessary material removal.
2Quantity of substance
If large volumes of dielectric material are used, then the energy storage capacity increases, but the probability of defects and failure increases
Solution Approach 1:
The patent removes the harmful correlation between volume and failure probability by extracting defects from the statistical distribution. By identifying and isolating defects through testing and creating area voids around them, the effective reliable volume increases, allowing larger devices to maintain high reliability despite increased material volume.
3Manufacturing precision
If conventional manufacturing methods are used, then the manufacturing process is simple, but the manufacturing precision and defect detection capability are insufficient
Solution Approach 1:
The patent applies preliminary action by performing electrical field testing and defect identification before final device assembly and operation. This advance detection allows defects to be located and addressed through area void creation, ensuring high manufacturing precision without requiring complex post-manufacturing repair processes.
Data Source
AI summary
A method for manufacturing an electroactive polymer device which includes a layered structure including a dielectric polymer layer and an electrode layer, wherein the electrode layer is arranged on a surface of the dielectric polymer layer. The method includes: providing the dielectric polymer layer; determining a surface area location of a defect on a first surface of the dielectric polymer layer; creating an electrode layer including an area void of electrode layer material surrounding the surface area location, and the electrode layer includes a patch of electrode material covering the surface area location and a remainder part of the surface of the dielectric polymer layer surrounding the area void of electrode layer material, in which the patch and the remainder part are electrically isolated from one another.