Magnetic Housing Frame Alignment for Flexible Display Bending

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Solution Overview

Problem

Existing flexible display devices face challenges in automatic alignment of housing members and limited degree of bending deformation, which affects their usability and convenience.

Innovation Solution

The use of a housing member with alternating magnetic areas and nonmagnetic areas on facing frames, allowing for magnetic attraction and repulsion to automatically align and improve bending deformation, featuring a display panel with bending and non-bending portions connected by a hinge assembly for flexible operation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If housing members are designed to be easily assembled, then ease of manufacture is improved, but automatic alignment precision deteriorates

Engineering Contradiction:
Improveease of assemblyVSAvoidalignment precision
Core Design Contradiction:
Ease of manufactureVSManufacturing precision

Solution Approach 1:

The housing members utilize magnetic areas that automatically generate alignment forces when the members are brought close together. The magnetic attraction and repulsion between corresponding magnetic areas on adjacent housing members creates self-aligning behavior, eliminating the need for external alignment tools or complex mechanical alignment features during assembly.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

Traditional mechanical alignment features such as precision-machined surfaces, alignment pins, or interlocking geometries are replaced with magnetic fields. The magnetic areas create forces that guide the housing members into proper alignment positions, substituting a magnetic field-based system for a mechanical alignment system.

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

2Adaptability or versatility

If the display panel is made more flexible to improve bending deformation, then adaptability is improved, but structural stability deteriorates

Engineering Contradiction:
Improvebending flexibilityVSAvoidstructural stability
Core Design Contradiction:
Adaptability or versatilityVSStability of the object's composition

Solution Approach 1:

The display panel is divided into multiple segments including flexible display regions and rigid support regions. The housing members are also segmented with magnetic areas positioned at specific locations to provide localized support. This segmentation allows the display to bend in designated areas while maintaining structural stability through the distributed magnetic support points.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The housing members combine magnetic materials with nonmagnetic materials to create a composite structure. The magnetic areas provide both structural support and alignment functionality, while the nonmagnetic areas allow for flexibility. This composite approach enables the structure to maintain stability while accommodating bending deformation.

Inventive Principle:
Principle #40Composite materials

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

The solution enables automatic alignment of housing members and enhances the degree of bending deformation, improving the flexibility and convenience of the flexible display device.

Implementation Method 1

Each of the first side surface and the second side surface may include a plurality of magnetic areas, and a nonmagnetic area that separates the magnetic areas, at least one magnetic area of the plurality of magnetic areas includes a first sub magnetic area having a first polarity and a second sub magnetic area having a second polarity different from the first polarity

Methodology Applied
Scientific EffectMagnetic attraction and repulsion: Magnetism

Data Source

PatentUS11144096B2Housing member and flexible display device including the same
Publication Date: 2021.10.12 SAMSUNG DISPLAY CO LTD
  • US11144096B2 patent drawing
  • US11144096B2 patent drawing
  • US11144096B2 patent drawing

AI summary

A housing member and a flexible display device including the same are provided. A display panel includes a bending portion and non-bending portions provided on both sides of the bending portion; a body portion disposed under the display panel and includes a first frame and a second frame opposite to each other; and a connection portion connecting the first frame and the second frame to each other and defining a bending axis, the first frame and the second frame include facing surfaces including magnetic areas and a nonmagnetic area, the magnetic areas are spaced apart from each other by the nonmagnetic area, and two magnetic areas of the magnetic areas are disposed in the first frame and the second frame, respectively, and face each other, and have opposite polarities that attract the two magnetic areas.