Flexible Display Scroll Mechanism for Compact Portability

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Solution Overview

Problem

Conventional displaying devices face challenges in providing both a large display area and compact, portable design, as they often compromise on either area or volume, failing to meet user demands for versatility and ease of carrying.

Innovation Solution

A displaying device comprising a first and second housing, a flexible screen, a supporting strip, and a telescopic rod, where the flexible screen and supporting strip are wound and unwound using scroll rolling mechanisms, allowing the device to transition between a curled and deployed state, with the telescopic rod enhancing support and stability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Area of moving object

If the display screen area is increased to meet user requirements for higher display area, then the display area is improved, but the device volume increases making it less portable

Engineering Contradiction:
Improvedisplay areaVSAvoiddevice volume
Core Design Contradiction:
Area of moving objectVSVolume of moving object

Solution Approach 1:

The display screen is designed to be dynamically changeable between a deployed state (flat configuration for maximum display area) and a curled state (compact configuration for portability). The flexible display module can transition between these states through a scroll rolling mechanism, allowing the device to adapt its display area and volume based on usage requirements.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

When the display screen is curled, it is wound into a compact form and stored within the housing structure. The flexible display module is nested inside the first housing when in the curled state, similar to nested dolls, allowing the large display area to be contained within a small device volume for portability.

Inventive Principle:
Principle #7Nested doll (Nesting)

2Volume of moving object

If the flexible screen is wound into the housing to reduce volume, then the device becomes more portable, but the screen may deform or shake during use

Engineering Contradiction:
Improvedevice volumeVSAvoidscreen stability
Core Design Contradiction:
Volume of moving objectVSReliability

Solution Approach 1:

A supporting strip with flexible properties is provided to support the flexible display module. This supporting strip includes a flexible substrate that maintains the structural integrity of the display when curled, preventing deformation while allowing the compact configuration for portability.

Inventive Principle:
Principle #30Flexible shells and thin films

Solution Approach 2:

The supporting strip includes a curved support structure that matches the curvature of the curled display screen. This curved design provides continuous support along the length of the curled screen, preventing shaking and deformation while maintaining the compact curled state for portability.

Inventive Principle:
Principle #14Spheroidality (Curvature)

3Reliability

If a supporting structure is added to prevent screen deformation, then the screen stability is improved, but the device complexity increases

Engineering Contradiction:
Improvescreen stabilityVSAvoidstructure complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The supporting strip serves multiple functions simultaneously: it supports the flexible display module, provides structural strength, enables the curled configuration, and maintains display stability. This multi-functionality reduces the need for separate components, thereby limiting the increase in device complexity while achieving screen stability.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The supporting strip merges the functions of structural support, display cushioning, and curvature maintenance into a single component. By combining these functions, the design avoids the complexity of multiple separate support structures while still preventing screen deformation and shaking.

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 a high display area when needed while maintaining a compact volume, preventing deformation and shaking, thus improving user experience and operational reliability.

Implementation Method 1

the metal sheets and the ferromagnetic film are connected by magnetic attraction

Methodology Applied
Scientific EffectMagnetic attraction: Magnetism

Data Source

PatentUS12045093B2Display apparatus and electronic device
Publication Date: 2024.07.23 BOE TECHNOLOGY GROUP CO LTD
  • US12045093B2 patent drawing
  • US12045093B2 patent drawing
  • US12045093B2 patent drawing

AI summary

A displaying device and an electronic device. The displaying device includes: a first housing, a second housing, a flexible screen, a supporting strip and a telescopic rod; first housing and second housing face each other, and the first housing is provided with an opening at a position facing the second housing; one end of flexible screen is winded inside first housing, and the other end protrudes out of opening and is fixed to second housing; one end of supporting strip is winded inside first housing, the other end protrudes out of opening and is fixed to second housing, and a portion of supporting strip that protrudes out of first housing clings to a bottom of flexible screen; and telescopic rod is disposed at a bottom of supporting strip, and one end of telescopic rod is fixed to first housing, and the other end is fixed to the second housing.