Flexible Display Variable-Region Heating for Low-Temperature Expansion

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Solution Overview

Problem

Flexible displays in electronic devices are prone to breakage due to stress and external forces during expansion or reduction, particularly in low-temperature environments, increasing the risk of damage in variable regions.

Innovation Solution

An electronic device with a flexible display that includes a heat dissipation system comprising a flexible heat dissipation member and a slide structure, which adjusts temperature and luminance based on external temperature and battery charge level to prevent breakage during screen size changes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a flexible display is used to expand or reduce the screen, then the adaptability of the electronic device is improved, but the reliability of the display deteriorates due to stress and external forces causing breakage in variable regions

Engineering Contradiction:

Improvescreen expansion capabilityVSAvoiddisplay breakage risk

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The heating electrode layer is pre-positioned within the flexible display structure in the variable region. When temperature sensors detect low temperature conditions, the heating electrode is activated beforehand to prevent breakage before it occurs, rather than reacting after damage happens.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The heating electrode layer is specifically placed only in the variable region where breakage risk is highest, rather than heating the entire display uniformly. This localized heating approach targets the critical area needing protection while conserving energy.

Inventive Principle:

Principle #3Local quality

2Reliability

If heating is applied to the variable region to prevent breakage, then the reliability of the display is improved, but the energy consumption increases

Engineering Contradiction:

Improvedisplay breakage preventionVSAvoidheating energy consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

Temperature sensors detect the actual temperature of the flexible display, and this feedback controls the heating electrode activation. The heating is automatically adjusted based on real-time temperature conditions, ensuring energy is used only when and where needed.

Inventive Principle:

Principle #23Feedback

3Reliability

If the heating electrode layer is interposed in the flexible display, then the reliability is improved, but the device complexity increases

Engineering Contradiction:

Improvedisplay breakage resistanceVSAvoiddisplay structure complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The heating electrode layer is integrated directly into the flexible display structure itself, merging the heating function with the display layers. This eliminates the need for separate external heating apparatus, reducing overall device complexity while maintaining reliability.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The flexible display structure contains its own heating capability through the integrated heating electrode layer, allowing it to self-regulate and protect against breakage without requiring complex external control systems or additional components.

Inventive Principle:

Principle #25Self-service

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 system effectively reduces display breakage by heating the variable region in response to temperature and environmental conditions, ensuring the display's integrity during expansion and reduction.

Implementation Method 1

The KR 2014 0143638 A discloses a flexible display device and a control method thereof which has an interposed heating electrode layer located to provide resistance heating.

Methodology Applied

Scientific EffectJoule heating: Joule Heating

Implementation Method 2

The flexible heat dissipation member may be disposed between the slide structure and the flexible display, and dissipate heat generated by the electronic component to the flexible display.

Methodology Applied

Scientific EffectThermal conduction: Conduction (thermal)

Data Source

PatentEP4180905B1Electronic device including flexible display, and operating method therefor

Publication Date: 2026.03.18 SAMSUNG ELECTRONICS CO LTD

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AI summary

An electronic device operating method according to various embodiments of the present disclosure can measure the external temperature of the electronic device by using at least one sensor module. The method can calculate, from the whole area of a flexible display, a fixed area visually exposed to the outside regardless of the screen size of the electronic device, and a variable area having at least a part visually exposed to the outside in a screen expansion or screen size change state of the electronic device. The external temperature is compared with a preset first critical temperature so that heating of the variable area can be determined if the external temperature is less than the first critical temperature. The variable area can be heated by controlling the brightness of the variable area and/or driving frequency.