Flexible Display Scroll Box Mechanism for Peeling Prevention

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Current flexible display devices experience partial peeling issues when rolled due to differences in rolled lengths between laminated film layers, limiting the application of rollable display panels.

Innovation Solution

A flexible display device design featuring a scroll box with movable and fixed scrolls that rotate and move in a coordinated manner to evenly roll and unroll the flexible display screen, preventing partial peeling and allowing for larger unrolled areas.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If a single scroll is used to roll up the flexible display screen, then the structure is simple, but partial peeling occurs due to differences in rolled lengths between laminated film layers

Engineering Contradiction:

Improvescroll structureVSAvoidrolling integrity

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The single scroll is divided into multiple scrolls (first scroll and second scroll) that are arranged in parallel. Each scroll independently wraps around the flexible display screen, allowing different segments of the screen to be rolled with different radii. This segmentation prevents partial peeling by distributing the rolling stress across multiple scrolls rather than concentrating it on a single scroll.

Inventive Principle:

Principle #1Segmentation

2Adaptability or versatility

If the flexible display screen is rolled to increase screen size flexibility, then adaptability improves, but partial peeling occurs limiting the rolling range

Engineering Contradiction:

Improvescreen size flexibilityVSAvoidrolling completeness

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The scroll structure is made dynamic by allowing the first and second scrolls to rotate independently in response to user input. The scrolls can dynamically adjust their rotation angles and speeds to achieve complete rolling (100% of the panel length) without partial peeling. This dynamic control enables the system to adapt to different rolling requirements while maintaining structural integrity.

Inventive Principle:

Principle #15Dynamics

3Reliability

If multiple scrolls are added to prevent partial peeling, then rolling integrity improves, but device complexity increases

Engineering Contradiction:

Improverolling integrityVSAvoidscroll mechanism

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The first scroll and second scroll are merged into a unified parallel arrangement within the same rolling mechanism. Both scrolls work together in a coordinated manner, sharing the rolling function and distributing the mechanical load. This merging approach achieves improved rolling integrity while minimizing the increase in device complexity by using a systematic parallel structure rather than adding independent complex mechanisms.

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS11423810B2Flexible display device

Publication Date: 2022.08.23 WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO LTD

AI summary

A flexible display device is provided. The flexible display device includes a display body, a scroll box disposed on a side of the display body, and a flexible display screen, wherein an end of the flexible screen is connected to the scroll box, and a middle portion of the flexible screen is fixed on the display body. The flexible display screen is configured to be rolled up around the scroll box and be unrolled.