Flexible Display Panel Curvature Adjustment Using Flip Frame Wings

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Solution Overview

Problem

Existing display devices lack the ability to freely change the curvature of their display panels, limiting flexibility and adaptability.

Innovation Solution

A mechanism comprising a flexible plate, driving module, and wing brackets with pivotable wings and a lead screw system allows for the display panel to be curved or flattened with a predetermined curvature, using a motor and gear system to control the curvature.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Stability of the object's composition

If a rigid structure is used to maintain display panel shape, then structural stability is improved, but the ability to change curvature is lost

Engineering Contradiction:
Improvestructural stabilityVSAvoidcurvature adjustment capability
Core Design Contradiction:
Stability of the object's compositionVSAdaptability or versatility

Solution Approach 1:

The patent employs a movable support structure with adjustable legs that can dynamically change the curvature of the display panel. The support legs are positioned at multiple locations and can be independently adjusted to create different curvature states, transforming a static support system into a dynamic one that adapts to various display configurations.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The support structure is divided into multiple independent support legs distributed across the rear surface of the display panel. Each leg can be adjusted independently, allowing segmented control over different regions of the panel to achieve various curvature profiles, rather than using a single monolithic support structure.

Inventive Principle:
Principle #1Segmentation

2Adaptability or versatility

If frequent curvature adjustment is enabled, then adaptability is improved, but mechanical wear and friction increase

Engineering Contradiction:
Improvecurvature adjustment capabilityVSAvoidstructural durability
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The patent replaces traditional mechanical adjustment mechanisms with a magnetic field-based control system. Magnetic actuators generate forces to adjust the support legs and change panel curvature without physical contact or friction, eliminating mechanical wear while maintaining frequent adjustment capability.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The system changes the physical state or mode of actuation from mechanical contact to magnetic field interaction. By using magnetic forces instead of mechanical linkages, the system achieves curvature adjustment without the friction and wear associated with traditional mechanical systems, extending structural durability.

Inventive Principle:
Principle #35Parameter changes

3Adaptability or versatility

If complex drive mechanisms are added to enable curvature change, then adaptability is improved, but device complexity increases

Engineering Contradiction:
Improvecurvature adjustment capabilityVSAvoidmechanism complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent uses a flexible support structure with thin, movable legs that can bend and adjust position without requiring complex joints or linkages. The flexibility of these components allows for simple, elegant curvature adjustment mechanisms that avoid the complexity of rigid mechanical assemblies.

Inventive Principle:
Principle #30Flexible shells and thin films

Solution Approach 2:

By substituting magnetic field-based actuators for complex mechanical drive mechanisms, the patent achieves curvature adjustment with a simpler overall system architecture. The magnetic actuators directly generate the necessary forces without requiring gear trains, linkages, or other complex mechanical transmission elements.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

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

Enables continuous and efficient adjustment of the display panel's curvature, reducing power consumption and maintaining structural durability through minimized friction and reduced wear.

Implementation Method 1

a lead screw (135); and a moving block (134) that moves on the lead screw (135) by rotation of the lead screw (135)

Methodology Applied
Scientific EffectScrew mechanism: Screw

Implementation Method 2

a flip frame (133) that linearly reciprocates... having a second side pivotally connected to the moving block (134)

Methodology Applied
Scientific EffectPivoting: Hinge

Data Source

PatentEP4287171B1Display device
Publication Date: 2026.02.11 LG ELECTRONICS INC
  • EP4287171B1 patent drawingFigure 1
  • EP4287171B1 patent drawingFigure 2
  • EP4287171B1 patent drawingFigure 3

AI summary

A display device is provided. The display device includes: a flexible display panel; a flexible plate disposed at a rear of the display panel and coupled to the display panel; a driving module disposed at a rear of the plate and including a flip frame that linearly reciprocates; wings elongated with a first end fixed to the flip frame and a second end coupled to the rear of the plate, and having pivot shafts disposed adjacent to the first end between the first end and the second end; and wing brackets connected with the pivot shafts and fixed to the rear of the plate, wherein the driving module includes: a rotatable lead screw; and a moving block that moves on the lead screw by rotation of the lead screw, wherein the flip frame has a first side fixed to the wings and a second side pivotally connected to the moving block.