Display Device Protective Layer with Localized Heat Dissipation

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Solution Overview

Problem

Display devices face challenges in providing reliable protection against external impacts and heat dissipation, particularly in the integration of multiple functional layers that can efficiently absorb impacts and dissipate heat without increasing thickness or complexity.

Innovation Solution

A display device design featuring a protective layer with a first protection portion containing heat dissipation material overlapping the display region and a second protection portion composed of a base resin, light-blocking material, and blowing agent overlapping the pad region, both directly disposed under the display panel to enhance impact resistance and heat dissipation without overlapping on a plane.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If a single protective layer is used to provide both impact protection and heat dissipation functions, then device complexity is reduced, but it becomes difficult to optimize both heat dissipation performance and impact resistance simultaneously

Engineering Contradiction:

Improveprotective layer structureVSAvoidheat dissipation and impact protection performance

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The protective layer is divided into a first region overlapping the display region containing heat dissipation material for thermal management, and a second region overlapping the pad region without heat dissipation material for impact protection. This local differentiation allows each region to be optimized for its specific function while using a single integrated protective layer structure.

Inventive Principle:

Principle #3Local quality

2Temperature

If heat dissipation material is added to the protective layer, then heat dissipation capability is improved, but the protective layer thickness increases

Engineering Contradiction:

Improveheat dissipation capabilityVSAvoidprotective layer thickness

Core Design Contradiction:

TemperatureVSLength of stationary object

Solution Approach 1:

Heat dissipation material is selectively placed only in the first region overlapping the display region where heat generation occurs, rather than uniformly distributing it throughout the entire protective layer. This localized approach improves heat dissipation capability while minimizing the overall thickness increase of the protective layer.

Inventive Principle:

Principle #3Local quality

3Reliability

If multiple functional layers are stacked to provide impact protection and heat dissipation, then protection performance is improved, but manufacturing complexity increases

Engineering Contradiction:

Improveprotection performanceVSAvoidmanufacturing process

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The protective layer integrates multiple functions that would traditionally require separate layers: impact protection through the base resin matrix, heat dissipation through incorporated heat dissipation material in the display region, and light blocking through the inherent properties of the protective layer material. This merging into a single integrated layer simplifies the manufacturing process by reducing the number of stacking and bonding operations required.

Inventive Principle:

Principle #5Merging (Combining)

4Ease of manufacture

If the protective layer covers both display region and pad region with uniform composition, then manufacturing is simplified, but heat dissipation efficiency is reduced

Engineering Contradiction:

Improveprotective layer fabricationVSAvoidheat dissipation efficiency

Core Design Contradiction:

Ease of manufactureVSTemperature

Solution Approach 1:

The protective layer employs different compositions in different regions: the first region contains heat dissipation material for efficient thermal management of the display region, while the second region has a simpler composition optimized for impact protection of the pad region. This local differentiation maintains manufacturing feasibility while significantly improving heat dissipation efficiency where it is most needed.

Inventive Principle:

Principle #3Local quality

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 dissipates heat generated by the display panel, improves impact resistance, and simplifies manufacturing by using a single protective layer that performs multiple functions, reducing thickness and complexity while enhancing process reliability and reducing failure rates.

Implementation Method 1

The first protection portion overlapping the display region may include a heat dissipation material

Methodology Applied

Scientific EffectThermal conduction: Conduction (thermal)

Implementation Method 2

at least one of the first protection portion and the second protection portion may further include a blowing agent

Methodology Applied

Scientific EffectImpact absorption through bubble deformation: Elasticity

Data Source

PatentUS20240397671A1Display device and method for manufacturing the same

Publication Date: 2024.11.28 SAMSUNG DISPLAY CO LTD

AI summary

Provided is a display device including a display panel including a display region and a pad region adjacent to the display region. The display device includes a protective layer disposed under the display panel. The protective layer includes a first protection portion overlapping the display region and including a heat dissipation material. The protective layer includes a second protection portion overlapping at least the pad region, where the second protection portion is absent the heat dissipation material.