Flexible Display Hinge and Temperature Control

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Solution Overview

Problem

Foldable devices with flexible displays face issues of wrinkles, screen lifting, water, and dust ingress due to hinge structures, and are prone to damage from temperature fluctuations.

Innovation Solution

A flexible display device with an independent hinge structure and a temperature maintenance system, featuring a foldable body housing and a temperature control system that includes a sensor, controller, and heating wire to maintain the device within a stable temperature range, preventing damage from temperature extremes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a hinge structure is used in foldable devices, then the device can be folded and unfolded, but wrinkles and screen lifting occur on the screen

Engineering Contradiction:

Improvefolding capabilityVSAvoidscreen flatness

Core Design Contradiction:

Adaptability or versatilityVSManufacturing precision

Solution Approach 1:

The device is divided into two separate housings (first housing and second housing) connected by a hinge, allowing each housing to be optimized independently. The flexible display is segmented into first and second display portions that can move independently during folding, reducing stress concentration and preventing wrinkles while maintaining screen flatness.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The hinge structure enables dynamic folding and unfolding movements between the two housings. The flexible display is designed to dynamically adapt its shape during folding operations, with the first and second display portions moving relative to each other to maintain flatness while enabling foldability.

Inventive Principle:

Principle #15Dynamics

2Adaptability or versatility

If a hinge structure is used in foldable devices, then the device can be folded and unfolded, but water and dust proof problems arise

Engineering Contradiction:

Improvefolding capabilityVSAvoidwater and dust ingress

Core Design Contradiction:

Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The hinge structure is extracted as a separate, dedicated component connecting the two housings, rather than being integrated into the housing itself. This separation allows the hinge to be specifically engineered with sealing mechanisms to prevent water and dust ingress while enabling folding functionality.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The flexible display uses thin film structures that can bend and fold while maintaining integrity. These thin film layers act as barriers to water and dust, allowing the display to be flexible yet protective, preventing harmful substances from penetrating into the device interior during folding operations.

Inventive Principle:

Principle #30Flexible shells and thin films

3Adaptability or versatility

If the flexible display device is used in various temperature conditions, then the device can operate in different environments, but the display does not work properly and is damaged due to temperature changes

Engineering Contradiction:

Improveenvironmental adaptabilityVSAvoiddisplay functionality

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

A temperature sensor continuously monitors the internal temperature of the device and provides feedback to the controller. Based on this feedback, the controller activates the heating wire when the temperature is too low, creating a closed-loop temperature control system that maintains reliable display operation across varying environmental conditions.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The heating wire changes the thermal parameter (temperature) of the device interior by generating heat through resistive heating. This parameter change compensates for low environmental temperatures, maintaining the internal temperature within the optimal operating range for the flexible display and preventing damage.

Inventive Principle:

Principle #35Parameter changes

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 provides waterproof and dustproof protection while ensuring the flexible display operates within a stable temperature range, preventing damage from temperature fluctuations and enhancing user awareness of safe usage conditions.

Implementation Method 1

A heating wire 1200 installed in the device may be driven to raise the temperature of the device

Methodology Applied

Scientific EffectResistive heating: Joule Heating

Data Source

PatentUS20240143051A1Flexible display portable device

Publication Date: 2024.05.02 RYU SANGKYU

AI summary

The present invention is intended to remove screen wrinkles and screen loosening in a flexible display folder-type device and provide waterproof and dustproof functions to the folder-type device. The present invention is intended to provide smooth functioning of a flexible display device by providing a temperature maintenance system that maintains the temperature of the flexible display device within a certain range in order to solve the problem of the device becoming damaged and not operating properly due to a change in temperature.