Foldable Display Winding Mechanism for Screen Protection
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Solution Overview
Problem
Current foldable display devices damage the flexible display screen when the folding mechanism is folded, as they are fixedly bonded, causing the screen to fold simultaneously.
Innovation Solution
A foldable display device design where the flexible display screen is not bonded to the folding mechanism, using a winding mechanism to wind the screen when folded, preventing damage and maintaining a flat state, with a flexible support plate and coil spring providing a pulling force to keep the screen attached.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the flexible display screen and folding mechanism are fixedly bonded together, then the structure is simple and easy to manufacture, but the flexible display screen is damaged when the folding mechanism is folded
Solution Approach 1:
The display screen is divided into a rigid portion and a flexible portion, allowing each part to be treated differently during folding. The rigid portion remains fixed while the flexible portion can be wound or folded independently, preventing damage to the display area.
Solution Approach 2:
The flexible portion of the display screen is extracted from the rigid bonded structure and connected through a flexible connection mechanism. This allows the flexible portion to be wound or folded independently when the folding mechanism operates, preventing damage to the display screen.
2Reliability
If the flexible display screen is wound by the winding mechanism, then the flexible display screen is protected from damage, but the device structure becomes more complex
Solution Approach 1:
The winding mechanism is integrated into the folding mechanism structure, combining multiple functions into a single system. The flexible connection mechanism serves both as a structural connector and as the winding path, reducing the need for separate complex winding components.
Solution Approach 2:
The connection between the flexible portion and rigid portion is made dynamic through the flexible connection mechanism, which transitions from a static bonded structure to a dynamic system that can adapt its configuration during folding and unfolding operations.
3Shape
If the flexible display screen remains flat during folding, then the display quality is maintained, but the folding mechanism cannot be compacted effectively
Solution Approach 1:
The display screen is segmented into rigid and flexible portions, allowing the rigid portion to maintain its flat shape for display quality while the flexible portion can be wound or folded to achieve compactness during storage or transport.
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
Prevents damage to the flexible display screen by not folding it with the mechanism, keeps the screen flat, and reduces wear by maintaining contact and minimizing friction.
Implementation Method 1
the winding mechanism includes a coil spring, an axis of the coil spring is parallel to the first direction, an inner end of the coil spring is fixedly coupled to the folding mechanism, and an outer end of the coil spring is fixedly coupled to an end of the flexible support plate; when the first support and the second support rotate around the first direction, the coil spring provides a pulling force to keep the flexible support plate attached to an end of the folding mechanism
Data Source
AI summary
A foldable display device is provided, including a flexible display screen, a folding mechanism, and a winding mechanism. The folding mechanism has an upper support surface and a lower support surface, and includes a first support and a second support. A first end of the flexible display screen encloses one end of the folding mechanism and is coupled to the first support, and a second end of the flexible display screen encloses the other end of the folding mechanism and is coupled to the second support.