Elastic Pressure Plate for Flexible Display Bending Control
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Solution Overview
Problem
Flexible display screens are prone to damage due to excessive bending beyond their ultimate bending radius, which existing technologies fail to effectively mitigate.
Innovation Solution
A flexible display device incorporating an elastic pressure plate with position limiting teeth, made of super-elastic materials, that supports and flattens the display screen, reducing tensile stress and preventing damage by controlling bending radius through a combination of downward pressure and positional limiting mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the flexible display screen is bent beyond its ultimate bending radius, then the flexibility and adaptability of the device is improved, but the display screen will be damaged due to excessive bending
Solution Approach 1:
A support plate is introduced as an intermediary component between the flexible display screen and the external environment. The support plate has a bending radius smaller than the ultimate bending radius of the display screen, providing mechanical support during bending operations. This mediator prevents the display screen from being directly subjected to excessive bending forces, thereby protecting it from damage while still enabling flexible deformation of the overall device.
Solution Approach 2:
The support plate is designed with a predetermined bending radius that is smaller than the ultimate bending radius of the flexible display screen. This beforehand cushioning approach ensures that when the device is bent, the support plate absorbs the excessive bending stress before it can reach the display screen, preventing damage in advance while allowing the device to achieve the desired flexibility.
2Volume of moving object
If the bending radius of the flexible display screen is reduced below the ultimate bending radius, then the flexibility and compactness of the device is improved, but the display screen will be damaged due to excessive bending stress
Solution Approach 1:
The support plate serves as a mediator that enables the device to achieve a compact bent state with a smaller overall bending radius. By providing structural support, it allows the device to be bent to a radius smaller than the ultimate bending radius of the display screen without causing damage, thus achieving compactness while protecting the screen's strength.
Solution Approach 2:
The support plate is designed as a thin, flexible structure that can deform along with the device during bending. This flexible shell approach allows the support plate to maintain its protective function while adapting to the bent configuration, enabling compact device form factor without compromising the display screen's integrity.
3Reliability
If a rigid support structure is added to prevent excessive bending, then the protection of the display screen is improved, but the flexibility and thinness of the device is reduced
Solution Approach 1:
Instead of using a rigid support structure, the patent employs a flexible support plate that can deform during bending operations. This thin-film approach provides the necessary protection against excessive bending while maintaining the device's flexibility and avoiding significant increases in structural complexity. The support plate's flexibility allows it to integrate seamlessly with the overall device structure.
Solution Approach 2:
The support plate's key parameter is its bending radius, which is designed to be smaller than the ultimate bending radius of the display screen. By carefully controlling this geometric parameter, the support plate provides effective protection while remaining thin and flexible. This parameter-based design approach avoids complex structural solutions and maintains device simplicity.
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
Effectively alleviates damage from excessive bending by reducing tensile stress on the flexible display screen, allowing for safer bending and flattening without causing damage, while maintaining flexibility and minimizing thickness.
Implementation Method 1
an elastic pressure plate, and a flexible display screen disposed on a first surface of the elastic pressure plate. The flexible display screen is bent and flattened through the elastic pressure plate
Implementation Method 2
both the plurality of position limiting teeth and the elastic pressure plate are made of super-elastic titanium alloy or super-elastic iron-carbon alloy
Data Source
AI summary
Embodiments of the present application provide a flexible display device which includes an elastic pressure plate and a flexible display screen. The flexible display screen is disposed on a first surface of the elastic pressure plate. The flexible display screen is bent and flattened through the elastic pressure plate.