Foldable Display Holding Structure for Stable Magnetic Folding
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Solution Overview
Problem
Large foldable display devices are prone to damage during folding and unfolding due to high repulsive forces and lack of rigidity, making it difficult to stably maintain both folded and unfolded states, especially when transported or stored.
Innovation Solution
A holding system for large foldable display devices that includes a motor, rotational arm, fixing plate, moving plate, and magnetic unit, allowing for stable folding and unfolding by generating rotational force and utilizing magnetic forces to secure the device in both states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a hinge structure is applied to a large foldable display device (40 inches or more), then the device can be folded and unfolded, but the display panel is more likely to be damaged during folding/unfolding or transporting due to high repulsive force and low rigidity
Solution Approach 1:
The holding system performs preliminary action by maintaining the display panel in a stable unfolded state before folding operations begin. The holding force is applied in advance to counteract the repulsive force, ensuring the panel is ready for safe folding without sudden movements that could cause damage.
Solution Approach 2:
The holding system acts as an intermediary between the display panel and the external environment during folding and transporting. It mediates the high repulsive force by providing continuous holding force, preventing direct stress on the fragile display panel while enabling safe folding operations.
2Adaptability or versatility
If a hinge structure is applied to a large foldable display device, then the device can be folded, but it is difficult to stably maintain the folded state during transportation and storage
Solution Approach 1:
The holding system applies holding force in advance to maintain the display panel in a stable folded state before transportation begins. This preliminary stabilization ensures the panel remains securely folded without requiring continuous active control during transport.
Solution Approach 2:
The holding system provides self-service by automatically adjusting its holding force to maintain both folded and unfolded states without external intervention. The system monitors and compensates for changes in the display panel's state, ensuring stable maintenance of the folded configuration during transportation.
3Reliability
If a holding system with motor and magnetic unit is used, then the display device can be stably maintained in folded and unfolded states, but the device complexity increases
Solution Approach 1:
The holding system replaces complex mechanical locking mechanisms with a simpler motor-driven magnetic field system. Instead of using multiple mechanical components for state maintenance, the system uses electromagnetic force generated by the motor and magnetic unit, reducing mechanical complexity while improving reliability.
Solution Approach 2:
The holding system changes the physical parameter from mechanical force to magnetic field strength for state maintenance. By controlling the motor's electromagnetic output, the system can smoothly transition between folded and unfolded states and maintain them stably without complex mechanical structures.
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 system enables the foldable display device to be easily and stably switched between unfolded and folded states, reducing the risk of damage and facilitating convenient transportation and storage by using a motor-driven rotational arm and magnetic fixation.
Implementation Method 1
a magnetic unit fixed on the moving plate. The foldable display device in a folded state may be fixed to the magnetic unit via a magnetic force
Data Source
AI summary
A foldable display set may include: a foldable display device; and a holding system on a rear surface of the foldable display device and configured to fold and unfold the foldable display device. The holding system may include: a motor configured to generate a rotational force; a rotational arm configured to be rotated by the rotational force of the motor to fold and unfold the foldable display device; a fixing plate spaced apart from the rotational arm with the foldable display device in an unfolded state; a moving plate on the fixing plate and configured to be moved with respect to the fixing plate by the rotational arm; and a magnetic unit fixed on the moving plate. The foldable display device in a folded state may be fixed to the magnetic unit via a magnetic force.