Graphene Coated Electronic Components for Environmental Resistance
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Solution Overview
Problem
Conformal coatings for electronic components often fail due to poor application or quality, leading to exposure and failure, especially under extreme environmental conditions like temperature, pressure, and humidity changes, and are typically heavy and bulky, making them unsuitable for applications where weight and volume are critical, such as aerospace.
Innovation Solution
A graphene coating layer with an average thickness of 300 nm or less, optionally combined with an electrically insulating material layer, is applied to electronic components using methods like vapor deposition or thermal carburization, providing improved protection and mechanical properties without significantly increasing the component's mass or volume.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conformal coatings are applied to protect electronic components, then environmental resistance is improved, but weight and volume increase
Solution Approach 1:
The patent applies a thin film coating (graphene or graphene-like material) on the electronic component surface to provide environmental protection. The coating thickness is controlled to be very thin (e.g., less than 1 micrometer) to minimize weight and volume addition while maintaining protective functions against moisture, chemicals, and physical damage.
Solution Approach 2:
The patent changes the material parameter from traditional conformal coatings to graphene or graphene-like materials, which have superior strength-to-weight ratio and environmental resistance. This material substitution provides equivalent or improved protection with significantly reduced weight and volume.
2Reliability
If conformal coatings are applied to protect electronic components, then environmental resistance is improved, but the coating thickness and bulkiness increase
Solution Approach 1:
The patent uses a thin film coating approach where the protective layer is applied as a conformal film that closely follows the component surface geometry. The film thickness is optimized to provide necessary protection while minimizing volume addition, typically keeping the coating thickness in the sub-micrometer range.
Solution Approach 2:
By changing to graphene-based materials, the patent achieves high environmental resistance with minimal coating thickness. The unique two-dimensional structure of graphene provides exceptional barrier properties and mechanical strength at atomic-scale thickness, dramatically reducing the volume increase compared to traditional coatings.
3Reliability
If traditional conformal coatings are used, then protection is provided, but application quality issues lead to component exposure and failure
Solution Approach 1:
The patent employs coating methods where the graphene or graphene-like material self-assembles or self-aligns on the component surface, reducing dependence on precise manual application. The material's inherent properties enable it to form a continuous, defect-free coating that conforms to complex geometries without requiring high-precision application processes.
Solution Approach 2:
The patent uses composite material structures, such as graphene combined with other materials or multi-layer configurations, to enhance coating performance. This composite approach provides redundancy and ensures complete coverage even if individual layers have minor defects, improving overall protection reliability.
4Reliability
If thicker coatings are applied to improve protection, then environmental resistance increases, but optical transparency decreases
Solution Approach 1:
The patent changes the material composition to graphene or graphene-like materials that have unique optical properties. These materials can provide substantial environmental protection while maintaining high optical transparency in the visible spectrum, allowing applications where visibility through the coating is required.
Solution Approach 2:
The patent uses ultra-thin film coatings that are transparent to visible light. The film thickness is optimized to be thin enough to allow light transmission while still providing the necessary barrier properties against environmental factors. The conformal nature of the thin film ensures uniform protection without compromising optical clarity.
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 graphene coating enhances environmental resistance and mechanical performance while maintaining optical transparency and reducing the component's volume and mass, offering at least a 10% improvement in environmental testing performance compared to uncoated or equivalently coated components.
Implementation Method 1
disposing a graphene coating layer on an environment-facing surface of the electronic component
Implementation Method 2
disposing the electronic component in a high temperature environment and forming a graphene coating layer by a thermal carburization technique
Data Source
AI summary
In one aspect, coated electrical components are described herein. In some implementations, a coated electrical component comprises an electrical component and a graphene coating layer disposed on a surface of the electrical component. The graphene coating layer, in some implementations, has a thickness of about 300 nm or less. In another aspect, methods of increasing the service life of an electronic apparatus are disclosed herein. In some implementations, such a method comprises disposing a graphene coating layer on an environment-facing surface of an electronic component of the apparatus, wherein the electronic apparatus exhibits at least a 10 percent improvement in environmental testing performance compared to an otherwise equivalent electronic apparatus not comprising a graphene coating layer, the environmental testing performance comprising performance in a waterproofness test, acetic acid test, sugar solution test, or methyl alcohol test described herein.