Flexible Display Stress Buffering Layer Simplifies Structure
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Solution Overview
Problem
Flexible display devices with complex hinge and winding mechanisms result in complicated structures, which are difficult to maintain stability during bending.
Innovation Solution
A flexible display device with a stress buffering layer made of multi-stabilized nano-structured metal material, such as supra-nanometre-sized dual-phase glass-crystal (SNDP-GC), is configured on the bendable region to buffer stress, allowing the device to maintain stability during bending without deformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If hinge or winding mechanism is configured to enable bending, then flexibility is improved, but device structure becomes complicated
Solution Approach 1:
The patent extracts and removes the complex hinge and winding mechanisms from the flexible display device, replacing them with a stress buffering layer that enables bending without requiring mechanical joints or winding structures. This eliminates the source of structural complexity while preserving flexibility.
Solution Approach 2:
The patent replaces the mechanical hinge and winding systems with a material-based stress buffering layer made of supra-nanometre-sized dual-phase glass-crystal material. This substitutes complex mechanical systems with a simpler material property-based solution that provides the same bending functionality.
2Adaptability or versatility
If hinge or winding mechanism is configured to enable bending, then flexibility is improved, but stability during bending deteriorates
Solution Approach 1:
The patent applies beforehand cushioning by introducing a stress buffering layer made of supra-nanometre-sized dual-phase glass-crystal material on the bending surface. This layer预先 buffers and absorbs the stress generated during bending, preventing instability and deformation before they can occur.
Solution Approach 2:
The patent employs composite materials by using a stress buffering layer composed of supra-nanometre-sized dual-phase glass-crystal material with specific crystal phases (first phase and second phase) that work together to provide both flexibility and stability during bending operations.
3Stability of the object's composition
If stress buffering layer is added to buffer stress, then stability is improved, but device structure becomes more complex
Solution Approach 1:
The patent uses a thin film stress buffering layer made of supra-nanometre-sized dual-phase glass-crystal material that can be deposited on the display device surface. This thin film approach provides stress buffering functionality without adding significant structural complexity or thickness to the device.
Solution Approach 2:
The patent changes the material parameters by using supra-nanometre-sized dual-phase glass-crystal material with specific crystal phase compositions and size parameters. This material parameter optimization enables effective stress buffering while maintaining a simple and compact device structure.
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 stress buffering layer simplifies the structure of the flexible display device, maintaining it in a stable state both when flat and bent, reducing the need for additional hinge structures and enhancing durability under various bending conditions.
Implementation Method 1
a stress buffering layer is configured on the bendable region, the stress buffering region is configured to buffer a stress generated from the flexible display device when the flexible display device is in a bending state
Implementation Method 2
The stress buffering layer is made of metal nanomaterial, and a stiffness of the stress buffering layer is greater than a stiffness of the back plate. The metal nanomaterial is multi-stabilized nano-structured material, and the multi-stabilized nano-structured material is configured to be a supra-nanometre-sized dual-phase glass-crystal (SNDP-GC)
Implementation Method 3
The flexible display device further includes an adhesion layer configured on the bendable region, and the stress buffering layer is attached to the bendable region via the adhesion layer
Implementation Method 4
The stress buffering layer is formed on the bendable region by conducting an evaporation process
Data Source
AI summary
The present disclosure relates to a flexible display device, including at least two non-bending regions and at least one bendable region configured between the two adjacent non-bending regions. A stress buffering layer is configured on the bendable region. The stress buffering layer is configured to buffer a stress generated from the flexible display device when the flexible display device is in a bending state to maintain the flexible display device to be in a stable state, so as to simplified the structure of the flexible display device. The present disclosure further relates to a manufacturing method of the flexible display device.