Flexible Display Rear Window Detachable Cover

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Solution Overview

Problem

Flexible display devices with exposed screens on both front and rear surfaces face issues with dust and foreign substances entering the rear surface, causing damage and reducing visibility, as existing technologies lack an effective mechanism for easy removal of these contaminants.

Innovation Solution

A flexible display device design featuring a rear window unit detachably coupled to the second body, with a rotary ejector mechanism that separates the rear window from the second body, allowing for easy removal of dust and foreign substances, and includes a frame made of stainless steel with magnetic properties and hooks for secure coupling and detachment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a cover is provided to cover the flexible display exposed to the rear surface, then the display is protected, but dust or foreign substances may be introduced into the rear surface of the frame

Engineering Contradiction:
Improvedisplay protectionVSAvoiddust and foreign substances
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The device is divided into two separable parts: the frame and the cover. The cover can be detached from the frame, allowing users to remove it for cleaning the display surface while maintaining protection when attached. This segmentation resolves the contradiction by enabling both protection and access for removing contaminants.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The cover is designed to be extractable from the frame structure. Users can take out the cover to clean the display or remove foreign substances, then reattach it for protection. This extraction capability allows the system to alternate between protected state and cleaning state, resolving the contradiction between protection and contaminant removal.

Inventive Principle:
Principle #2Taking out (Extraction)

2Illumination intensity

If the flexible display is exposed to the rear surface, then visibility is improved, but foreign substances may cause damage and lower visibility

Engineering Contradiction:
Improvedisplay visibilityVSAvoidforeign substances
Core Design Contradiction:
Illumination intensityVSObject-affected harmful factors

Solution Approach 1:

The cover's attachment state is dynamic - it can be attached for protection or detached for cleaning and visibility. This dynamic design allows the system to switch between states: when attached, the display is protected; when detached, the display is fully accessible for cleaning and viewing, resolving the contradiction between visibility and contamination risk.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The cover is designed with features that allow preliminary cleaning actions before attachment. Users can clean the display surface while the cover is detached, then reattach the clean cover to prevent future contamination. This preliminary cleaning action resolves the contradiction by ensuring the display is clean before the protective state is reestablished.

Inventive Principle:
Principle #10Preliminary action

3Ease of operation

If the cover is detachably coupled, then foreign substances can be removed easily, but the coupling and detachment process requires stability

Engineering Contradiction:
Improveforeign substance removalVSAvoidcoupling stability
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The coupling mechanism is segmented into discrete attachment and detachment points (hooks engaging with corresponding features). This segmentation allows for simple, tool-free operation while maintaining stable coupling when attached. The segmented design enables easy removal for cleaning while ensuring reliable attachment during normal use, resolving the contradiction between ease of operation and coupling stability.

Inventive Principle:
Principle #1Segmentation

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 protects the flexible display by allowing easy removal of dust and foreign substances, enhancing the stability of the coupling and detachment process, and ensuring the flexible display is more easily managed and protected.

Implementation Method 1

a frame made of stainless steel with magnetic properties

Methodology Applied
Scientific EffectMagnetic properties: Magnetism

Data Source

PatentUS11243577B2Flexible display device
Publication Date: 2022.02.08 LG ELECTRONICS INC
  • US11243577B2 patent drawing
  • US11243577B2 patent drawing
  • US11243577B2 patent drawing

AI summary

The present disclosure relates to a flexible display device including a first body; a second body configured to be relatively movable with respect to the first body; a flexible display disposed on a front surface of the first body and a rear surface of the second body, and configured to vary in size of areas that are exposed to the front surface of the first body and to the rear surface of the second body as the first body and the second body are relatively moved; and a rear window unit detachably coupled to the rear surface of the second body, and configured to cover the flexible display exposed to the rear surface of the second body.