Staggered Conductive-Insulating EM Absorption Layers for Thin Electronics
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Solution Overview
Problem
Current electromagnetic wave absorption structures are inadequate for thin electronic products, as they fail to effectively shield against electromagnetic interference while being lightweight and thin, potentially causing health issues and device malfunctions.
Innovation Solution
An electromagnetic wave absorption structure comprising a conductive composite layer and an insulating layer, stacked and overlapped in a staggered manner, utilizing materials like graphene, graphite, or carbon nanotubes, with specific thicknesses and sheet resistances to provide efficient absorption and shielding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If conventional electromagnetic wave absorption structures are used, then electromagnetic wave shielding is achieved, but the structure becomes thick and heavy
Solution Approach 1:
The patent employs composite materials consisting of conductive layers (graphene, graphite, carbon nanotubes) combined with insulating layers in a stacked configuration. This composite structure achieves effective electromagnetic wave absorption and shielding while maintaining a thin profile and reduced weight, resolving the contradiction between shielding effectiveness and weight reduction.
Solution Approach 2:
The absorption structure is segmented into multiple thin layers including conductive layers and insulating layers stacked in alternating fashion. This segmentation allows the structure to achieve effective shielding through multiple interfaces and gradual wave attenuation, while keeping each individual layer thin and the overall structure lightweight.
2Object-affected harmful factors
If conventional electromagnetic wave absorption structures are used, then electromagnetic wave shielding is achieved, but the structure becomes thick
Solution Approach 1:
The patent employs composite materials consisting of conductive layers (graphene, graphite, carbon nanotubes) combined with insulating layers in a stacked configuration. This composite structure achieves effective electromagnetic wave absorption and shielding while maintaining a thin profile and reduced weight, resolving the contradiction between shielding effectiveness and weight reduction.
Solution Approach 2:
The patent transitions from conventional thick single-layer absorption structures to a multi-layer stacked configuration, effectively utilizing the dimensional arrangement of thin layers to achieve shielding. The stacked conductive and insulating layers create multiple reflection and absorption interfaces within a minimal thickness, resolving the contradiction between shielding effectiveness and thickness reduction.
3Length of stationary object
If thin absorption layers are used, then the structure remains thin and lightweight, but electromagnetic wave absorption effectiveness is reduced
Solution Approach 1:
The absorption structure is segmented into multiple thin layers including conductive layers and insulating layers stacked in alternating fashion. This segmentation allows the structure to achieve effective shielding through multiple interfaces and gradual wave attenuation, while keeping each individual layer thin and the overall structure lightweight.
Solution Approach 2:
The patent employs composite materials consisting of conductive layers (graphene, graphite, carbon nanotubes) combined with insulating layers in a stacked configuration. This composite structure achieves effective electromagnetic wave absorption and shielding while maintaining a thin profile and reduced weight, resolving the contradiction between shielding effectiveness and weight reduction.
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 structure effectively absorbs electromagnetic waves, reducing interference and health risks, while maintaining a lightweight and thin design suitable for thin electronic products, ensuring normal device operation and compliance with safety standards.
Implementation Method 1
The electromagnetic wave composite absorbing layer comprises a conductive composite layer... the conductive layer is a graphene layer, a graphite layer, a graphite nanoplatelet layer, a carbon fiber layer, or a carbon nanotube layer
Implementation Method 2
the sheet resistance of the conductive layer is between 10 ohm per square and 1000 ohm per square
Implementation Method 3
an insulating layer, which is stacked and overlapped with the conductive composite layer... the insulating layer or the interlayer insulating layer is a polymer resin layer, a resin/ceramic mixture layer, or a resin/metal mixture layer
Data Source
AI summary
An electromagnetic wave absorption structure includes at least one electromagnetic wave composite absorbing layer. The electromagnetic wave composite absorbing layer includes a conductive composite layer and an insulating layer. The insulating layer is stacked and overlapped with the conductive composite layer. The electromagnetic wave absorption structure can provide good electromagnetic wave absorption function, and have the features of light and thin, so it is particularly suitable for satisfying the electromagnetic wave absorption or shielding requirements of thin electronic products.