Flexible Display Panel Curvature Adjustment With Lead Screw

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Solution Overview

Problem

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

Innovation Solution

A display device comprising a flexible display panel, a flexible plate, a driving module with a flip frame, elongated wings, pivot shafts, and wing brackets, along with a rotatable lead screw and moving block mechanism, allowing for the dynamic adjustment of the display panel's curvature.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a fixed curvature structure is used for the display panel, then manufacturing is simpler, but adaptability to different applications is reduced

Engineering Contradiction:
Improveadaptability to different applicationsVSAvoidstructure complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent implements a dynamic curvature adjustment mechanism where the display panel can transition between different curvature states (flat, curved, folded) through a mechanical driving system. The driving module includes a rotating member that drives a moving member to change the curvature radius of the display panel, allowing the device to adapt to different application scenarios while maintaining a relatively simple overall structure through modular design.

Inventive Principle:
Principle #15Dynamics

2Ease of operation

If a mechanical curvature adjustment mechanism is added, then flexibility of the display panel is improved, but device complexity increases

Engineering Contradiction:
Improveflexibility of display panelVSAvoidmechanism complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The patent divides the curvature adjustment mechanism into distinct functional modules: a driving module with a rotating member, a transmission module with a moving member, and a support module with a support member. Each module has a specific function, and they work together through standardized connection interfaces. This segmentation allows for easier manufacturing, assembly, and maintenance while providing smooth curvature adjustment capability.

Inventive Principle:
Principle #1Segmentation

3Adaptability or versatility

If continuous bending capability is implemented, then adaptability is improved, but power consumption increases

Engineering Contradiction:
Improvecontinuous bending capabilityVSAvoidpower consumption
Core Design Contradiction:
Adaptability or versatilityVSUse of energy by moving object

Solution Approach 1:

The patent employs periodic action through its segmented mechanical structure where the display panel bends and returns to its original position in discrete steps. The driving module can rotate the rotating member to achieve bending in one direction, then reverse to return to the flat state. This periodic motion allows the display to adapt to different usage scenarios while consuming power only during state transitions, not during static display periods, thereby reducing overall power consumption.

Inventive Principle:
Principle #19Periodic action

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 the display panel to be freely curved or flattened with a predetermined curvature, enhancing flexibility and reducing power consumption through efficient power transmission and continuous bending capabilities.

Implementation Method 1

a rotatable lead screw; and a moving block that moves on the lead screw by rotation of the lead screw

Methodology Applied
Scientific EffectLead screw mechanism: Screw

Data Source

PatentUS12464660B2Display device
Publication Date: 2025.11.04 LG ELECTRONICS INC
  • US12464660B2 patent drawing
  • US12464660B2 patent drawing
  • US12464660B2 patent drawing

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.