Magnetic Support Member for Flexible Display Substrate Warpage

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Solution Overview

Problem

Flexible substrates in display devices tend to warp during manufacturing, affecting stability and quality.

Innovation Solution

A magnetic support member with a magnetic material is attached to the rear surface of the flexible substrate, which is then drawn by a magnetic field to prevent warpage and stabilize the substrate during processing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a flexible substrate is used in a display device, then flexibility and adaptability are improved, but warpage occurs during manufacturing affecting stability

Engineering Contradiction:

ImproveflexibilityVSAvoidsubstrate stability

Core Design Contradiction:

Adaptability or versatilityVSStability of the object's composition

Solution Approach 1:

A magnetic support member is introduced as an intermediary between the flexible substrate and the manufacturing environment. This support member provides mechanical stability during manufacturing while allowing the substrate to maintain its flexible properties. The magnetic support member acts as a temporary mediator that prevents warpage without permanently restricting substrate flexibility.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The physical state of the substrate is dynamically managed by changing its support conditions. During manufacturing, the substrate is in a supported state with the magnetic support member attached, providing stability. After manufacturing, the support member is removed, allowing the substrate to return to its flexible state. This parameter change in support configuration resolves the contradiction between flexibility and stability.

Inventive Principle:

Principle #35Parameter changes

2Adaptability or versatility

If the flexible substrate is kept unsupported during manufacturing, then flexibility is maintained, but warpage increases affecting manufacturing precision

Engineering Contradiction:

Improvesubstrate flexibilityVSAvoidsubstrate flatness

Core Design Contradiction:

Adaptability or versatilityVSManufacturing precision

Solution Approach 1:

The magnetic support member serves as a mediator that temporarily supports the flexible substrate during manufacturing processes. This intermediary provides the necessary flatness and stability for precise manufacturing while not permanently altering the substrate's flexible nature. The support member can be attached and removed without damaging the substrate.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The magnetic support member is attached to the substrate before manufacturing processes begin, providing preliminary support that prevents warpage during subsequent manufacturing steps. This preliminary action ensures the substrate maintains proper flatness throughout the manufacturing sequence, and the support member is removed after manufacturing is complete.

Inventive Principle:

Principle #10Preliminary action

3Manufacturing precision

If a support member is attached to the flexible substrate, then warpage is suppressed improving manufacturing precision, but device complexity increases

Engineering Contradiction:

Improvesubstrate flatnessVSAvoidmanufacturing process complexity

Core Design Contradiction:

Manufacturing precisionVSDevice complexity

Solution Approach 1:

The magnetic support member is a simple intermediary component that attaches to the substrate背面 and provides stable support during manufacturing. Despite its simplicity, it effectively suppresses warpage and improves manufacturing precision. The magnetic attachment mechanism allows for easy attachment and removal without complex assembly procedures.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The magnetic support member replaces complex mechanical clamping or fixing systems with a simple magnetic attachment mechanism. This substitution reduces device complexity while maintaining effective support functionality. The magnetic field provides sufficient holding force without requiring complex mechanical structures.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

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 magnetic support member effectively suppresses warpage, enhancing manufacturing stability and quality of the display device by maintaining the substrate flatness.

Implementation Method 1

Methodology Applied

Scientific EffectMagnetic field: Magnetic Field

Data Source

PatentUS11217759B2Display device and method of manufacturing display device

Publication Date: 2022.01.04 MAGNOLIA BLUE CORP

AI summary

A display device includes a flexible substrate, a self-luminescent element, and a support member. The flexible substrate has a first face and a second face opposed to the first face. The self-luminescent element is provided on the first face of the flexible substrate. The support member includes a magnetic material and is provided on the second face of the flexible substrate.