Flexible Display Device Using Transparent Magnetic Layers

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Solution Overview

Problem

Existing flexible display devices face delamination issues when repeatedly bent or folded due to adhesive films, which fail to maintain structural integrity and functionality.

Innovation Solution

The use of first and second transparent magnetic layers with a nanotube structure of one-dimensional carbon nitride, applying an attractive force to fix the display panel and upper member between these layers without adhesive films, ensuring the display device remains intact and functional.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If adhesive films are used to fix display components, then structural integrity is maintained during assembly, but delamination occurs when repeatedly bent or folded

Engineering Contradiction:
Improvestructural integrityVSAvoidresistance to delamination
Core Design Contradiction:
StrengthVSReliability

Solution Approach 1:

The patent removes adhesive films from the display structure and replaces them with transparent magnetic layers that use magnetic attractive forces for fixation. This extraction of the adhesive component eliminates the root cause of delamination while maintaining structural integrity through magnetic attraction between the transparent magnetic layers.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The patent substitutes the mechanical bonding mechanism of adhesive films with a magnetic field-based attraction mechanism. The transparent magnetic layers generate magnetic attractive forces that hold display components in place without physical contact or chemical bonding, allowing the structure to flex and bend without delamination.

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

2Ease of manufacture

If adhesive films are used to secure display components, then assembly is simplified, but the device becomes rigid and prone to delamination under stress

Engineering Contradiction:
Improveassembly simplicityVSAvoidflexibility
Core Design Contradiction:
Ease of manufactureVSAdaptability or versatility

Solution Approach 1:

The patent replaces mechanical adhesive bonding with magnetic field interaction, enabling the display device to maintain structural integrity while being flexible. The magnetic attractive forces act through the transparent magnetic layers without requiring physical contact, allowing the device to bend and flex without the rigidity constraints of adhesive films.

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

3Stability of the object's composition

If traditional bonding methods are used, then structural stability is achieved, but light transmission is blocked by opaque adhesive layers

Engineering Contradiction:
Improvestructural stabilityVSAvoidlight transmission
Core Design Contradiction:
Stability of the object's compositionVSIllumination intensity

Solution Approach 1:

The patent extracts and removes opaque adhesive layers from the display structure, replacing them with transparent magnetic layers. This extraction eliminates the light-blocking effect of traditional adhesives while maintaining structural stability through magnetic attraction, thereby improving light transmission to the display panel.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The patent employs transparent materials for the magnetic layers that allow light to pass through, contrasting with the opaque nature of traditional adhesive films. This transparency enables the magnetic layers to perform both structural and optical functions simultaneously, maintaining stability while improving illumination transmission.

Inventive Principle:
Principle #32Color changes

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

This solution allows the flexible display device to be repeatedly bent or folded without delamination, maintaining its structural integrity and functionality by utilizing the attractive force between the transparent magnetic layers to securely fix the display components.

Implementation Method 1

An attractive force may be applied between the first transparent magnetic layer and the second transparent magnetic layer. The display panel and the upper member that are between the first and second transparent magnetic layers may be fixed between the first and second transparent magnetic layers through the attractive force.

Methodology Applied
Scientific EffectMagnetic attractive force: Magnetism

Data Source

PatentUS10254866B2Display device
Publication Date: 2019.04.09 SAMSUNG DISPLAY CO LTD
  • US10254866B2 patent drawing
  • US10254866B2 patent drawing
  • US10254866B2 patent drawing

AI summary

A display device, including a first transparent magnetic layer; a display panel on the first transparent magnetic layer; an upper member on the display panel; and a second transparent magnetic layer on the upper member, the second transparent magnetic layer being penetrated by light.