Radiant Heat Blocking Layer for Display Devices

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Solution Overview

Problem

High brightness and high resolution display devices experience increased power consumption and heat emission, leading to discomfort for users due to radiant heat transfer, which affects their competitiveness and reliability, especially in larger displays.

Innovation Solution

Incorporation of a radiant heat blocking layer that selectively transmits or blocks light based on wavelength range, allowing visible light to pass while reflecting or blocking infrared light to prevent heat emission towards the viewer.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Illumination intensity

If high brightness and high resolution are implemented to improve display quality, then display performance is improved, but power consumption increases and heat emission increases

Engineering Contradiction:

Improvedisplay brightnessVSAvoidpower consumption

Core Design Contradiction:

Illumination intensityVSUse of energy by moving object

Solution Approach 1:

The patent converts the harmful infrared radiation (heat) emitted by the display into a beneficial feature by using a selective radiation layer that blocks infrared wavelengths while transmitting visible light. This layer transforms the harmful thermal radiation problem into an opportunity to improve display efficiency and user comfort without sacrificing brightness performance

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

2Illumination intensity

If high brightness and high resolution are implemented, then display quality is improved, but heat emission increases causing user discomfort

Engineering Contradiction:

Improvedisplay brightnessVSAvoidradiant heat

Core Design Contradiction:

Illumination intensityVSObject-affected harmful factors

Solution Approach 1:

The selective radiation layer blocks harmful infrared radiation while allowing visible light transmission, converting the harmful heat emission problem into a benefit where the display maintains high brightness without transferring unwanted thermal energy to the user

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

Solution Approach 2:

The patent applies a selective radiation layer with specific wavelength-selective properties at the front surface of the display, creating local quality differentiation where the layer has high transmission in the visible range and high reflection/blocking in the infrared range, thus addressing heat emission locally without affecting overall display performance

Inventive Principle:

Principle #3Local quality

3Object-affected harmful factors

If a radiant heat blocking layer is added to block infrared radiation, then heat blocking capability is improved, but device structure becomes more complex

Engineering Contradiction:

Improveradiant heat blockingVSAvoiddisplay structure

Core Design Contradiction:

Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The selective radiation layer serves multiple functions simultaneously: it blocks infrared radiation to reduce heat emission, maintains high transmission of visible light for display quality, and can be integrated into the existing display structure. This multi-functionality reduces the need for separate heat blocking components, thereby limiting the increase in structural complexity

Inventive Principle:

Principle #6Universality (Multi-functionality)

4Area of stationary object

If display size is increased to meet market demand, then display area is improved, but heat emission area increases causing more heat transfer

Engineering Contradiction:

Improvedisplay areaVSAvoidheat emission

Core Design Contradiction:

Area of stationary objectVSObject-generated harmful factors

Solution Approach 1:

The selective radiation layer is applied across the entire display surface, providing localized heat blocking capability at each point on the display. This ensures that even as display area increases, each local region independently blocks infrared radiation, preventing proportional increase in heat transfer to users

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

This solution effectively blocks radiant heat from high temperature sources in high brightness displays, enhancing user comfort and device reliability by reducing heat transfer through radiation, thereby improving competitiveness.

Implementation Method 1

a radiant heat blocking layer arranged at a foremost of the display panel, the radiant heat blocking layer to transmit a first wavelength range of light and block a second wavelength range of light

Methodology Applied

Scientific EffectSelective radiation blocking: Absorption (EM radiation)

Implementation Method 2

allowing visible light to pass while reflecting or blocking infrared light to prevent heat emission towards the viewer

Methodology Applied

Scientific EffectInfrared radiation blocking: Reflection

Data Source

PatentEP3909041B1Display device including radiant heat blocking layer

Publication Date: 2024.02.07 SAMSUNG ELECTRONICS CO LTD

Figure 1

AI summary

A display device, including a display panel configured to display an image in a front direction; an optical layer arranged at a front side of the display panel; and a radiant heat blocking layer arranged at a foremost plane of the display panel, and arranged on a front surface of the optical layer, wherein the radiant heat blocking layer is configured to block radiant heat produced by the display panel or produced behind the display panel from transferring forward from the radiant heat blocking layer.