Foldable Display Screen Sliding Mechanism for Stress Reduction
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Solution Overview
Problem
Foldable flexible display devices face damage due to repeated stretching and compression when folding, as the length of the screen in the folding state exceeds that in the unfolding state, leading to mechanical stress.
Innovation Solution
A foldable display device design featuring a supporting back plate with a first and second supporting part that can fold towards each other, where one end of the display screen is fixedly connected to the first part and slidably connected to the second part, allowing the screen to slide along the back plate during folding, thus avoiding stretching and compression.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the display screen length is made larger than the supporting back plate, then the display area is increased, but the screen undergoes repeated stretching and compression during folding which causes damage
Solution Approach 1:
The patent applies the dynamics principle by making the display screen movable relative to the supporting back plate through a sliding connection mechanism. The screen can slide along the supporting back plate in the folding direction, transforming from a static fixed connection to a dynamic movable connection. This allows the screen to adjust its position during folding operations, preventing the repeated stretching and compression that would otherwise cause damage, while maintaining a large display area when unfolded.
2Device complexity
If the screen is fixedly connected to the supporting back plate, then the structure is simple, but the screen cannot accommodate folding movements and gets damaged
Solution Approach 1:
The patent transforms the static fixed connection into a dynamic sliding connection, allowing the display screen to move relative to the supporting back plate during folding. This dynamic connection enables the screen to accommodate folding movements without damage while maintaining reasonable structural simplicity.
Solution Approach 2:
The patent introduces a sliding connection mechanism as an intermediary between the display screen and the supporting back plate. This intermediary component facilitates relative movement between the two parts, allowing the screen to slide along the supporting back plate during folding operations, thereby preventing damage while maintaining connection.
3Volume of moving object
If the display screen is folded with the supporting back plate, then the device is compact for carrying, but the screen length exceeds the back plate length causing mechanical stress
Solution Approach 1:
The patent applies dynamics by enabling the display screen to slide along the supporting back plate in the folding direction. During folding, the screen moves relative to the back plate, preventing the accumulation of mechanical stress that would occur with a fixed connection. This maintains device compactness while protecting the screen from stress-induced damage.
Data Source
AI summary
A foldable display device and a display apparatus are provided. The foldable display device includes a supporting back plate and a display screen arranged in the front side of the supporting back plate. The supporting back plate includes a first supporting part and a second supporting part, and the first supporting part and the second supporting part may bend towards to the reverse side of the supporting back plate through a folding connection. One end of the display screen is fixedly connected to the first supporting part, and the other end of the display screen is slidably connected to the second supporting part.