Flexible Display Elastic Strip Deformation Mechanism

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Solution Overview

Problem

Current flexible display screens cannot switch between flat and bent display states, limiting user experience and application versatility.

Innovation Solution

A flexible display device comprising a display panel, elastic strips with deformable sections, and strengthening ribs that allow the device to be easily switched between flattened and curled states by adjusting the elastic strips' curvature, using screws for fixation and uniform stress distribution.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the flexible display screen is fixed on a certain curvature arc, then the display maintains a stable curved shape, but the display cannot switch between flat and bent states reducing user experience

Engineering Contradiction:
Improvedisplay state switching capabilityVSAvoidstructure complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The support structure is divided into multiple elastic strips with deformable sections, allowing independent deformation of different segments. This segmentation enables the display to transition between flat and curved states by controlling the deformation of individual elastic strip segments, thereby achieving display state switching without requiring a completely complex reconfigurable structure.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The elastic strips are designed with deformable sections that can dynamically change their curvature state. By applying forces to these deformable sections, the elastic strips can transition between straight and curved configurations, enabling the display to switch between flat and bent display states. This dynamic capability provides adaptability while maintaining relatively simple structural components.

Inventive Principle:
Principle #15Dynamics

2Adaptability or versatility

If the elastic strip is made deformable to enable state switching, then display flexibility is improved, but the structural strength may be compromised

Engineering Contradiction:
Improvedisplay state switching capabilityVSAvoidstructural strength
Core Design Contradiction:
Adaptability or versatilityVSStrength

Solution Approach 1:

The elastic strips are designed with localized deformable sections rather than being uniformly flexible throughout. The deformable sections are positioned specifically where curvature changes are needed, while other portions of the elastic strips maintain sufficient strength to provide structural support. This local differentiation of flexibility and strength allows the structure to switch display states while maintaining overall structural integrity.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The elastic strips appear to be constructed from composite materials or structures that combine flexible and strong properties. The deformable sections utilize materials or structures that can undergo curvature changes while maintaining strength, allowing the elastic strips to both enable display state switching and provide necessary structural support against the display panel.

Inventive Principle:
Principle #40Composite materials

3Adaptability or versatility

If multiple elastic strips and strengthening ribs are used to enable flat and curled states, then display mode versatility is improved, but manufacturing complexity increases

Engineering Contradiction:
Improvedisplay mode versatilityVSAvoidassembly complexity
Core Design Contradiction:
Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

Multiple elastic strips are positioned and connected to work together as a coordinated system, and strengthening ribs are integrated with the elastic strips to provide both structural support and deformation capability. This merging of components allows the system to achieve multiple display modes (flat and curled states) while using standardized, repeatedly manufactured parts that can be assembled through systematic procedures, reducing overall manufacturing complexity despite the number of components.

Inventive Principle:
Principle #5Merging (Combining)

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 two flexible display modes, improving user experience by allowing seamless transitions between flat and curled states, enhancing application versatility and visual enjoyment.

Implementation Method 1

the elastic strip comprises a pair of ends and a deformable section located between the pair of ends, and as the elastic strip is flattened in a longitudinal direction, the deformable section arches with respect to the pair of ends, and as the elastic strip is curled in the longitudinal direction, the deformable section is leveled with the pair of ends

Methodology Applied
Scientific EffectElastic deformation: Elasticity

Data Source

PatentUS11019737B2Flexible display device
Publication Date: 2021.05.25 HUIZHOU CHINA STAR OPTOELECTRONICS TECHNOLOGY CO LTD
  • US11019737B2 patent drawing
  • US11019737B2 patent drawing
  • US11019737B2 patent drawing

AI summary

Disclosed is a flexible display device, comprising a display panel, including a backside away from a display side; an elastic strip, fixed to the backside, wherein in a width direction of the elastic strip, the elastic strip comprises a pair of ends and a deformable section located between the pair of ends, and as the elastic strip is flattened in a longitudinal direction, the deformable section arches with respect to the pair of ends, and as the elastic strip is curled in the longitudinal direction, the deformable section is leveled with the pair of ends, and the elastic strip is used to flatten the display panel or curl the display panel. An initial state of the elastic strip is an elastic structure of a curled shape. The flexible display device can be automatically switched from a flattened state to a curled state by simply pressing the deformable section.