Flexible Display Rear Cover Curvature Adaptation

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Solution Overview

Problem

Flexible display devices face challenges in achieving a constant curvature from the center to both ends due to the rigidity of the rear cover, making it difficult to change and maintain user-intended curvatures, limiting their versatility and durability.

Innovation Solution

A flexible display device design featuring a back cover with a curvature changing member and a rear cover that can be bent to support the back cover, allowing users to freely change the display panel's curvature from flat to curved modes, with components like support members, guide members, and reinforcement structures to maintain user-intended curvatures.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If a rigid rear cover is used to support the display panel, then structural strength is improved, but curvature adaptability deteriorates

Engineering Contradiction:

Improvestructural strengthVSAvoidcurvature adaptability

Core Design Contradiction:

StrengthVSAdaptability or versatility

Solution Approach 1:

The rear cover is divided into multiple segments or sections that can independently move relative to each other. This segmentation allows the rigid rear cover to adapt to different curvature requirements while maintaining structural strength in each segment, resolving the contradiction between rigidity and curvature adaptability.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The rear cover is designed with dynamic characteristics, allowing it to change its structural configuration between different curvature states. Mechanical actuators or flexible hinges enable the rear cover to transition between flat and curved positions, maintaining strength while adapting to various display configurations.

Inventive Principle:

Principle #15Dynamics

2Ease of manufacture

If the rear cover structure is simplified for easy manufacturing, then ease of manufacture is improved, but curvature control precision deteriorates

Engineering Contradiction:

Improveease of manufactureVSAvoidcurvature control precision

Core Design Contradiction:

Ease of manufactureVSManufacturing precision

Solution Approach 1:

The patent employs adjustable parameters in the rear cover design, such as variable hinge angles, adjustable support member positions, or configurable mechanical linkages. These parameter changes enable precise curvature control while maintaining a relatively simple overall structure that is easy to manufacture using standard processes.

Inventive Principle:

Principle #35Parameter changes

3Stability of the object's composition

If support members are added to maintain curvature, then curvature stability is improved, but device complexity increases

Engineering Contradiction:

Improvecurvature stabilityVSAvoiddevice complexity

Core Design Contradiction:

Stability of the object's compositionVSDevice complexity

Solution Approach 1:

The support members are merged with existing structural elements of the rear cover, such as integrating them into the cover's framework or combining their functions with other components. This merging approach provides curvature stability while minimizing the increase in overall device complexity by utilizing shared structural elements.

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS10917985B1Flexible display device

Publication Date: 2021.02.09 LG DISPLAY CO LTD

AI summary

A flexible display device includes a back cover supporting and engaged with the rear surface of a display panel, a curvature changing member provided on the rear surface of the back cover and configured to change a curvature of the back cover, and a rear cover bent along with the back cover and supporting the rear surface of the back cover.