Foldable Display Hinge Mechanism to Prevent Screen Delamination
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Solution Overview
Problem
Folding or unfolding flexible display screens in electronic devices can lead to delamination or fracture due to excessive squeezing or pulling, reducing their service life and making them prone to dust ingress.
Innovation Solution
A rotating mechanism with a shaft, transmission apparatus, and top rods that control the movement of device bodies relative to each other, ensuring the flexible display screen is not excessively squeezed or pulled, using synchronized gear systems to maintain stability and prevent damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the flexible display screen is folded or unfolded, then the device can switch between compact and expanded states, but the display screen is prone to delamination or fracture due to excessive squeezing or pulling
Solution Approach 1:
A rotating mechanism comprising a shaft, transmission apparatus, and top rods is introduced as an intermediary between the first and second device bodies. This mechanism controls the relative movement during folding/unfolding, ensuring the flexible display screen is not excessively squeezed or pulled, thus preventing delamination and fracture while enabling form factor transformation.
Solution Approach 2:
The rotating mechanism changes the motion parameters during folding/unfolding by controlling the angle and speed of movement between device bodies. The transmission apparatus converts rotational motion into controlled linear or angular displacement, ensuring the flexible display screen undergoes gentle, controlled deformation rather than abrupt stress, thereby maintaining reliability during form factor changes.
2Volume of moving object
If the device is folded to reduce size, then portability is improved, but the flexible display screen may be damaged due to excessive squeezing
Solution Approach 1:
The top rods act as intermediary elements that physically separate the first and second device bodies during folding, preventing direct contact and excessive squeezing of the flexible display screen. The rotating mechanism ensures controlled movement, maintaining adequate spacing to protect display screen integrity while achieving compact folding.
Solution Approach 2:
The rotating mechanism with transmission apparatus provides beforehand cushioning by controlling the folding speed and angle. The mechanism ensures gradual, controlled compression rather than abrupt folding, cushioning the flexible display screen against excessive squeezing forces that would cause damage.
3Area of moving object
If the device is unfolded to increase display size, then visual impact is improved, but the flexible display screen may fracture due to excessive pulling
Solution Approach 1:
The rotating mechanism serves as an intermediary that controls the unfolding process, ensuring the flexible display screen is pulled gradually and uniformly rather than abruptly. The transmission apparatus regulates the separation speed between device bodies, preventing excessive pulling forces that would cause fracture while achieving full display expansion.
Solution Approach 2:
The rotating mechanism introduces dynamic control to the unfolding process, adjusting the speed and angle of separation between device bodies based on the folding/unfolding stage. This dynamic regulation ensures the flexible display screen experiences optimal stress distribution, preventing fracture during expansion to full display area.
4Device complexity
If the device uses a simple hinge connection, then device complexity is reduced, but the flexible display screen is vulnerable to dust ingress and damage
Solution Approach 1:
The rotating mechanism with shaft, transmission apparatus, and top rods acts as an intermediary system that creates a controlled, enclosed environment during folding/unfolding. This mechanism minimizes gaps and exposure between device bodies, preventing dust ingress while protecting the flexible display screen, without requiring overly complex sealing structures.
Solution Approach 2:
The rotating mechanism employs a nested structure where the transmission apparatus and top rods are integrated within the device body framework. This nested design protects internal components from dust while maintaining a compact form, and ensures controlled movement that prevents dust exposure during folding and unfolding operations.
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 extends the service life of the flexible display screen by preventing delamination and fracture, while maintaining a compact form factor for easy carrying and ensuring reliable operation.
Implementation Method 1
The rotating mechanism includes a shaft, a transmission apparatus, and a top rod, where the shaft is connected to the top rod via the transmission apparatus
Implementation Method 2
The first device body and the second device body are able to rotate relative to each other
Data Source
AI summary
An electronic device including a first device body, a second device body, a rotating mechanism, and a flexible display screen. The flexible display screen includes a first display screen, a second display screen, and a third display screen. The first device body is rotatably connected to the second device body via the rotating mechanism; the first display screen is connected to the second display screen via the third display screen; the first device body is connected to the first display screen, and the second device body is connected to the second display screen. The rotating mechanism includes a shaft, a transmission apparatus, and a top rod. The shaft is connected to the top rod via the transmission apparatus, and at least one of the first device body or the second device body is connected to the top rod.