Roll-Slide Display Wrinkle Mitigation via Magnetic Restoration
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Solution Overview
Problem
Flexible roll-slide display devices face issues with wrinkles when transitioning from a default to an extended state, leading to durability problems and operational errors due to delayed deformation restoration.
Innovation Solution
Incorporating a magnetic sheet on the rear surface of the display panel and a magnet in the opposing frame to utilize magnetic force for restoring wrinkled portions, ensuring smooth extension and maintaining durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If the flexible display is extended from a default state to an extended state, then the screen size is increased, but wrinkles are generated around the bent display due to delayed restoration
Solution Approach 1:
The magnetic sheet is pre-installed on the rear surface of the display panel and the magnet is pre-installed on the opposing frame. When the display is extended, the magnetic force is automatically activated to pull the flexible display back, preventing wrinkle formation before they can occur during the extension process.
Solution Approach 2:
A magnetic field is introduced as an intermediary force between the flexible display and the frame. The magnetic sheet and magnet create an invisible magnetic field that acts as a mediator to restore the flexible display's shape, eliminating the need for mechanical tension that causes wrinkles.
2Adaptability or versatility
If the flexible display is repeatedly deformed during extension and retraction, then the device achieves expandable functionality, but fatigue accumulates reducing durability
Solution Approach 1:
The patent replaces purely mechanical deformation-restoration with a magnetic field-based system. Instead of relying solely on the flexible display's elastic recovery, the magnetic force assists in restoring the display to its original state, reducing mechanical stress and fatigue accumulation from repeated deformations.
Solution Approach 2:
The magnetic force provides a controllable restoring parameter that complements the flexible display's elastic properties. By adjusting the magnetic field strength through the magnet and magnetic sheet configuration, the restoration force can be optimized to minimize fatigue while maintaining expandable functionality.
3Ease of operation
If the flexible display is made more elastic to enable rolling, then portability is improved, but wrinkle formation increases during state transitions
Solution Approach 1:
The magnetic field serves as an intermediary that works in conjunction with the flexible display's elasticity. The magnetic force provides a gentle, distributed restoring pressure that prevents localized wrinkle formation while allowing the display to remain highly elastic for rolling and portability.
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 magnetic solution effectively mitigates wrinkles and improves operational reliability by facilitating faster deformation restoration and reducing fatigue on the flexible display, enhancing the device's durability and user experience.
Implementation Method 1
a magnet was added on a second front surface portion of the opposing second frame to restore any wrinkled portions of the display device using a magnetic force
Data Source
AI summary
A roll-slide display device includes a first frame, a second frame, and a third frame which configure an outer periphery, a flexible display unit which includes a first area coupled to the first frame, a second area coupled to the third frame, and a third area located between the first area and the second area, and a magnet provided in the second frame, in which the flexible display unit includes a display panel and a magnetic sheet disposed on a rear surface of the display panel and the first frame slides to the left and right with respect to the second frame to implement a default state and an extended state.