Rollable Display Device Structural Rigidity Door Assembly

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Solution Overview

Problem

Existing display devices using flexible panels face challenges in maintaining structural rigidity to prevent sagging and torsion, and lack a reliable door opening-closing structure.

Innovation Solution

A display device design incorporating a flexible display panel wound or unwound from a long roller, with a door assembly pivotally connected to frames at both ends of the roller, providing structural rigidity and a functional door mechanism.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a flexible display panel is used to enable bending and rolling, then adaptability and compact storage are improved, but structural rigidity deteriorates causing sagging and torsion

Engineering Contradiction:

Improveflexibility of display panelVSAvoidstructural rigidity

Core Design Contradiction:

Adaptability or versatilityVSStability of the object's composition

Solution Approach 1:

The support structure is divided into multiple rigid support bars that are distributed across the flexible display panel. These segmented support elements provide localized rigidity to prevent sagging and torsion while allowing the overall structure to remain flexible androllable.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The display device combines flexible materials (flexible display panel, flexible roller) with rigid materials (support bars, frame structure) to create a composite structure. This composite approach allows the device to maintain flexibility for rolling while preventing deformation through rigid support elements.

Inventive Principle:

Principle #40Composite materials

2Ease of operation

If the display device is made flexible and rollable, then ease of operation is improved, but device complexity increases due to need for additional support structures

Engineering Contradiction:

Improverollability of display deviceVSAvoidsupport structure complexity

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The support bars are designed with flexible coatings or flexible structural configurations that allow them to bend slightly during rolling operation. This maintains the flexibility and rollability of the display device while still providing adequate support to prevent excessive deformation.

Inventive Principle:

Principle #30Flexible shells and thin films

Solution Approach 2:

The support structure is designed to be dynamic rather than completely rigid, allowing controlled deformation during rolling and unfolding. The support bars can flex slightly to accommodate the rolling motion while maintaining structural integrity and preventing harmful deformations.

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS12205498B2Display device

Publication Date: 2025.01.21 LG ELECTRONICS INC

AI summary

A display device is disclosed. The display device of the present disclosure may comprise: a flexible display panel; a roller which elongates and on or from which the display panel is wound or unwound; a first frame to which one end of the roller is rotatably coupled; a second frame to which the other end of the roller is rotatably coupled and faces the first frame with respect to the roller; and a door assembly which is positioned to be adjacent to the distal end of the display panel unwound from the roller, and is pivotably connected to the first frame and the second frame.