Nanomaterial Shielding Tape for EMI Absorption

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Solution Overview

Problem

Existing electromagnetic shielding materials, such as metal tapes and foils, are inadequate in preventing electromagnetic interference (EMI) between electronic devices, leading to signal quality deterioration and operational disruptions.

Innovation Solution

An electromagnetic wave shielding tape utilizing nanomaterials, comprising a carrier substrate with nanostructures on both surfaces and an insulating enclosing structure, which includes nanostructure groups of nanotubes or nanosheets arranged in specific patterns to effectively absorb and reflect electromagnetic waves.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional metal tapes and foils are used for electromagnetic shielding, then the shielding effect is provided through reflection and guiding, but the shielding effectiveness is insufficient and signal quality deteriorates

Engineering Contradiction:

Improveshielding effectivenessVSAvoidsignal quality

Core Design Contradiction:

ReliabilityVSLoss of information

Solution Approach 1:

The patent uses composite materials combining metal carrier substrate with nanomaterial coatings (such as carbon nanotubes, graphene, or metal oxide nanparticles) to create a multi-functional shielding tape that provides both reflection and absorption mechanisms, significantly improving shielding effectiveness over conventional single-material tapes

Inventive Principle:

Principle #40Composite materials

Solution Approach 2:

The patent changes the physical and chemical parameters of the shielding material by introducing nanoscale structures with specific surface areas, aspect ratios, and material compositions, thereby optimizing the balance between reflection loss and absorption loss to enhance overall shielding performance

Inventive Principle:

Principle #35Parameter changes

2Object-affected harmful factors

If a complete metal protection net is used to isolate electronic circuits, then electromagnetic interference is blocked, but the device complexity increases

Engineering Contradiction:

Improveelectromagnetic interferenceVSAvoidshielding structure complexity

Core Design Contradiction:

Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The patent extracts only the essential shielding function from complex metal protection nets by using thin-film nanomaterial coatings on flexible carriers, achieving effective EMI blocking with minimal structural complexity and reduced material usage

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent employs flexible thin-film structures consisting of nanomaterial coatings on polymer or metal foil carriers, which provide effective electromagnetic shielding while maintaining simplicity, flexibility, and ease of integration into various devices without requiring complex rigid metal enclosures

Inventive Principle:

Principle #30Flexible shells and thin films

3Reliability

If conventional conductive materials are used for shielding, then reflection effect is provided, but absorption loss is insufficient

Engineering Contradiction:

Improveshielding effectivenessVSAvoidabsorption loss

Core Design Contradiction:

ReliabilityVSLoss of energy

Solution Approach 1:

The patent applies local quality by creating heterogeneous nanomaterial structures with varying conductivity, surface area, and material composition at different locations or layers, optimizing the local absorption characteristics to complement the overall reflection-based shielding mechanism

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The patent utilizes porous or hierarchical nanomaterial structures (such as porous metal oxides, aerogels, or nanotube forests) that provide multiple internal interfaces and extended path lengths for electromagnetic wave propagation, enhancing absorption loss through increased interaction between the electromagnetic fields and the material structure

Inventive Principle:

Principle #31Porous materials

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 shielding tape provides enhanced protection against electromagnetic interference and static electricity, improving signal transmission quality and device operation by effectively shielding electromagnetic waves through the use of nanomaterials on both surfaces of the carrier substrate.

Implementation Method 1

the first nanostructure includes a plurality of first nanostructure groups disposed on the first surface of the carrier substrate... each first nanostructure group has at least one first nanotube or at least one first nanosheet... effectively absorb and reflect electromagnetic waves

Methodology Applied

Scientific EffectAbsorption (EM radiation): Absorption (EM radiation)

Implementation Method 2

The principle of the electromagnetic interference shielding is to adopt a low-resistance conductive material, because the conductive material has a reflection and guiding effect on electromagnetic waves

Methodology Applied

Scientific EffectReflection: Reflection

Data Source

PatentUS10098268B2Electromagnetic wave shielding tape using nanomaterials

Publication Date: 2018.10.09 ANDAQ TECH CO LTD

AI summary

An electromagnetic wave shielding tape using nanomaterials includes a carrier substrate, a first nanostructure, a second nanostructure, and an insulating enclosing structure for enclosing the carrier substrate, the first nanostructure, and the second nanostructure. The carrier substrate has a first surface and a second surface opposite to the first surface. The first nanostructure is disposed on the first surface of the carrier substrate, and the second nanostructure is disposed on the second surface of the carrier substrate.