Flexible Display Restoring Force via Magnetic Supporting Layer
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Solution Overview
Problem
Flexible display devices face challenges in maintaining flatness and restoring force when repeatedly rolled and unrolled, leading to potential damage and image distortion due to the deterioration of restoring force over time.
Innovation Solution
A display device design featuring a supporting layer with elongated magnets that engage through grooves and protrusions, combined with elastic gel layers and rubber layers to enhance flatness and restoring force, allowing for efficient rolling and unrolling while maintaining image clarity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If a flexible substrate is used to make the display device light and impact-resistant, then weight and durability are improved, but the display device loses structural stability and becomes difficult to maintain flatness
Solution Approach 1:
The patent uses a flexible substrate made of thin film material that can be rolled and unrolled. This flexible shell structure enables the display device to be lightweight and impact-resistant while maintaining the ability to return to its original flat state through the restoring force mechanism.
Solution Approach 2:
The patent introduces a supporting layer with magnets that generates restoring force to counteract the gravitational and deformation forces acting on the flexible display panel. This counterbalancing mechanism maintains structural stability during rolling and unrolling operations.
2Ease of operation
If the display device is made to be easily deformed for rolling, then ease of operation is improved, but the restoring force deteriorates over time leading to image distortion
Solution Approach 1:
The patent employs a composite structure consisting of a flexible display panel, elastic gel layer, and supporting layer with magnets. This composite material system combines the flexibility needed for easy rolling with the restoring force mechanism to maintain reliability and prevent image distortion over time.
Solution Approach 2:
The patent introduces a supporting layer with magnets that provides pre-configured restoring force to counteract deformation. This beforehand cushioning mechanism ensures that the display panel maintains its flatness and image quality even after repeated rolling and unrolling operations.
3Stability of the object's composition
If magnets are used in the supporting layer to enhance restoring force, then structural stability is improved, but the device complexity increases
Solution Approach 1:
The supporting layer is segmented into multiple magnets arranged in a specific pattern with grooves and protrusions. This segmentation allows the complex function of maintaining flatness to be distributed across multiple simple magnetic elements, making the overall structure more manageable and manufacturable.
Solution Approach 2:
The supporting layer with magnets serves multiple functions: it provides restoring force to maintain flatness, enables rolling and unrolling motion, and structures the flexible display panel. This multi-functionality reduces the need for additional separate components, thereby managing device complexity.
4Reliability
If the contact area between magnets is increased to improve bonding strength, then reliability is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The patent uses asymmetric groove and protrusion structures on the magnets. This asymmetry creates a unique fitting geometry that guides precise alignment during assembly, thereby achieving high bonding strength without requiring extremely high manufacturing precision for all dimensions.
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 effectively improves the flatness and restoring force of the display panel, preventing damage and maintaining image quality even after repeated rolling and unrolling, by increasing the contact area and bonding strength between the magnets and providing high toughness and adhesiveness through the gel and rubber layers.
Implementation Method 1
an elastic gel layer between the display panel and the supporting layer
Implementation Method 2
The elastic gel layer may include a hybrid gel of a polyacrylamide gel and an alginate gel
Implementation Method 3
The supporting layer includes a plurality of magnets that are engageable with each other
Data Source
AI summary
A display device including a display panel that displays an image, and a supporting layer positioned on one surface of the display panel. The supporting layer includes a plurality of magnets that are engageable with each other.