Sealed Graphite Thermal Layer for Electronic Heat Dissipation

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Solution Overview

Problem

Electronic products generate heat, leading to potential malfunctions or fires due to inadequate heat dissipation and the risk of small graphite fragments separating from the graphite layer.

Innovation Solution

A thermally-conductive elastic body with a sealed graphite layer, comprising an elastic body wrapped with a thermally conductive layer including a graphite layer and a base film, where the edge region of the base film is attached to the elastic body using an adhesive or bonding agent to prevent graphite fragment separation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Temperature

If a graphite layer is used for heat dissipation, then thermal conductivity is improved, but small graphite fragments separate from the graphite layer causing short circuits or fires

Engineering Contradiction:

Improveheat dissipation capabilityVSAvoidrisk of graphite fragment separation

Core Design Contradiction:

TemperatureVSReliability

Solution Approach 1:

The graphite layer is nested within the base film, with the edge region of the base film wrapping around and sealing the graphite layer. This nested structure prevents graphite fragments from separating while maintaining thermal conductivity, as the base film acts as a containment layer that holds the graphite layer in place during use.

Inventive Principle:

Principle #7Nested doll (Nesting)

Solution Approach 2:

The base film serves as a flexible shell that completely seals the graphite layer. The edge region of the base film is attached to the elastic body to form a closed structure, preventing graphite fragments from detaching while allowing the overall structure to remain flexible for heat dissipation application.

Inventive Principle:

Principle #30Flexible shells and thin films

2Reliability

If the graphite layer is completely sealed with base film, then graphite fragment separation is prevented, but manufacturing complexity increases

Engineering Contradiction:

Improveprevention of graphite fragment separationVSAvoidstructure complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The base film is divided into a graphite-layer-contacting region and an edge region. The edge region specifically wraps around and seals the graphite layer, while other portions of the base film can be simpler. This segmentation allows the sealing function to be achieved without making the entire structure overly complex.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The base film combines multiple functions: it provides structural support, thermal conduction pathway, and sealing of the graphite layer. By merging these functions into a single component rather than using separate elements for each function, the overall device complexity is reduced while still achieving complete sealing.

Inventive Principle:

Principle #5Merging (Combining)

3Reliability

If adhesive or bonding agent is used to attach base film to elastic body, then graphite layer sealing is achieved, but additional materials and steps are required

Engineering Contradiction:

Improvesealing effectivenessVSAvoidmanufacturing process simplicity

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The adhesive or bonding agent acts as an intermediary substance between the edge region of the base film and the elastic body. This mediator enables reliable attachment and sealing of the graphite layer while allowing the base film and elastic body to remain as distinct components with their own optimized properties.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The adhesive or bonding agent is applied in advance to the edge region of the base film or the elastic body before assembly. This preliminary action ensures that when the components are assembled, the sealing function is immediately effective, preventing graphite fragment separation from the outset.

Inventive Principle:

Principle #10Preliminary action

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

Effectively dissipates heat from electronic products while preventing graphite fragment separation, thereby preventing short circuits, fires, or malfunctions, and enhancing the durability and reliability of electronic products.

Implementation Method 1

a graphite layer that conducts the heat

Methodology Applied

Scientific EffectThermal conduction: Conduction (thermal)

Implementation Method 2

an adhesive layer or a bonding agent layer with which the edge region of the first base film is attached to the elastic body

Methodology Applied

Scientific EffectAdhesion: Adhesive

Data Source

PatentUS9335104B2Thermally-conductive elastic body

Publication Date: 2016.05.10 LG ELECTRONICS INC

AI summary

Disclosed is a thermally-conductive elastic body that effectively dissipates heat generated from a heat generation source such as an electronic product and prevents a phenomenon in which small graphite fragments are separated from (fall off) a graphite layer by completely sealing up the graphite layer that conducts the heat. The thermally-conductive elastic body according to the embodiments of the present disclosure includes an elastic body and a thermally conductive layer that is formed to be wrapped around an external surface of the elastic body, in which the thermally conductive layer includes a first base film and a graphite layer that is internally arranged within an edge region of the first base film, and in which the edge region of the first base film is attached to the elastic body in such a manner that the graphite layer is sealed up.