CFRP Reinforced Flexible Display Panel for Crack Prevention and Heat Dissipation

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Solution Overview

Problem

Existing flexible flat-panel displays face challenges in achieving both high actual strength and flexibility due to the limitations of resin reinforcing structures, which can lead to cracking and moisture intrusion, and inadequate heat dissipation.

Innovation Solution

The use of a carbon-fiber-reinforced plastic (CFRP) reinforcing member with a multilayer structure, disposed on the outer surfaces of resin films, provides enhanced tensile strength, thermal conductivity, and reduced thickness, while minimizing gaps around the display panel to prevent cracking and improve heat radiation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If resin reinforcing plates and resin films are used to reinforce thin glass substrates, then the display panel gains some strength, but the actual strength is insufficient and the panel remains prone to cracking under bending stress

Engineering Contradiction:

Improveactual strengthVSAvoidcracking resistance

Core Design Contradiction:

StrengthVSReliability

Solution Approach 1:

The patent applies composite materials by combining carbon fiber-reinforced plastic (CFRP) with thin glass substrates to create a reinforced display panel structure. The CFRP layer provides high tensile strength and flexibility, compensating for the glass substrate's weakness in tension while maintaining overall panel strength and preventing cracking under bending stress.

Inventive Principle:

Principle #40Composite materials

2Strength

If resin reinforcing plates are attached to both sides of the display panel, then some structural support is provided, but the panel thickness increases significantly

Engineering Contradiction:

Improvestructural supportVSAvoidpanel thickness

Core Design Contradiction:

StrengthVSLength of stationary object

Solution Approach 1:

The patent uses a thin CFRP layer instead of thick resin reinforcing plates. The CFRP layer provides sufficient structural support and tensile strength while maintaining a thin profile, thus avoiding significant increase in panel thickness and preserving the flexibility and slim design of the display panel.

Inventive Principle:

Principle #30Flexible shells and thin films

3Strength

If resin reinforcing structure is used, then some strength is provided, but gaps form around the display panel allowing moisture intrusion

Engineering Contradiction:

Improvereinforcing strengthVSAvoidmoisture intrusion

Core Design Contradiction:

StrengthVSObject-affected harmful factors

Solution Approach 1:

The patent employs a CFRP layer that can be conformally applied to the display panel surface, creating a continuous sealing structure without gaps. This flexible reinforcing layer maintains close contact with the panel edges, preventing moisture intrusion while providing the necessary tensile strength and flexibility.

Inventive Principle:

Principle #30Flexible shells and thin films

4Stability of the object's composition

If conventional reinforcing structure is used, then some structural integrity is maintained, but heat radiation from the organic EL panel is not addressed

Engineering Contradiction:

Improvestructural integrityVSAvoidheat dissipation

Core Design Contradiction:

Stability of the object's compositionVSTemperature

Solution Approach 1:

The CFRP layer serves multiple functions simultaneously: it provides tensile strength and structural support, maintains panel flexibility, prevents moisture intrusion through continuous sealing, and facilitates heat dissipation from the organic EL panel. This multi-functional design addresses both structural integrity and thermal management requirements.

Inventive Principle:

Principle #6Universality (Multi-functionality)

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 solution effectively enhances the display's flexibility and strength, prevents cracking, and efficiently dissipates heat, resulting in a more reliable and durable flexible display panel.

Implementation Method 1

a first carbon fiber layer and a second carbon fiber layer... increase the tensile strength of the laminate structure... preventing the glass substrate from being bent to the breaking point

Methodology Applied

Scientific EffectTensile strength: Tension

Implementation Method 2

the CFRP reinforcing member... efficiently dissipates heat, resulting in a more reliable and durable flexible display panel

Methodology Applied

Scientific EffectThermal conductivity: Conduction (thermal)

Data Source

PatentUS8476828B2Electro-optical device, electronic device, and illumination apparatus including a panel having an electro-optical layer

Publication Date: 2013.07.02 ELEMENT CAPITAL COMMERCIAL CO PTE LTD

AI summary

An electro-optical device includes a display panel having an electro-optical layer, a first resin film stacked on the display panel to cover a first surface on the side of a display area of the display panel, and a second resin film stacked on the display panel to cover a second surface opposite the first surface, and at least one reinforcing member disposed on at least one of the first resin film and the second resin film.