Foldable Display Hinge Structure Using Magnets to Prevent Creases
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Solution Overview
Problem
Foldable display devices often suffer from deformation in the folding region, leading to unsightly creases and potential usability issues when unfolded.
Innovation Solution
A display device configuration featuring a supporting portion with magnetic materials, a hinge part, and magnet units that influence deformation by attracting the magnetic material when the panel is unfolded, maintaining a flat surface and preventing crease formation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If the display device is folded to provide a large display in a small package, then the display area is increased and portability is improved, but the folding region deforms and creases form on the display surface
Solution Approach 1:
The magnet unit applies a preliminary attractive force to the magnetic material in the folding region before the device is fully unfolded, counteracting the deformation tendency and preventing crease formation. This preliminary anti-action ensures the display surface remains flat during the transition from folded to unfolded state.
Solution Approach 2:
A magnetic field is introduced as an intermediary force between the magnet unit and the magnetic material in the folding region. This magnetic field mediates the interaction, allowing the magnet unit to exert control over the display panel's shape without direct mechanical contact, thus preventing deformation while maintaining the folding capability.
2Shape
If the folding region is reinforced to prevent deformation, then the display surface flatness is improved, but the device complexity increases
Solution Approach 1:
The patent replaces complex mechanical reinforcement structures with a magnetic field-based system. Instead of adding rigid supports or complex hinge mechanisms to prevent deformation, a magnet unit generates a magnetic field that interacts with magnetic material to maintain the display surface flatness, significantly reducing structural complexity.
Solution Approach 2:
The patent changes the physical state or properties of the system by introducing magnetic properties. The magnet unit and magnetic material create a controllable magnetic force that dynamically adjusts the folding region's shape, providing a simpler alternative to mechanical reinforcement while maintaining display surface flatness.
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 effectively prevents deformation of the folding region, ensuring a flat and usable display surface when the device is unfolded, enhancing user experience by minimizing creases and maintaining display quality.
Implementation Method 1
one or more magnet units disposed between the hinge part and the supporting portion, wherein the one or more magnet units are configured to influence a deformation of the flexible display panel by attracting the magnetic material of the supporting portion when the flexible display panel is in the unfolded state
Data Source
AI summary
The present disclosure relates to a display device. The display device may include a display panel, a supporting portion, a hinge part, a joint part, and a magnet unit. The supporting portion is disposed below the display panel and includes a plurality of supporting bars which are arranged in a first direction and are extended in a second direction crossing the first direction. The hinge part is disposed below the supporting portion and is overlapped with the supporting bars to define a folding axis extending in the second direction. The joint part is disposed between the hinge part and the supporting bars. The joint part including a plurality of joints, which are arranged in the first direction, are extended in the second direction, and are coupled to rotate with respect to each other. The magnet unit is disposed between the hinge part and the joints.