Flexible Display Magnetic Rolling Control
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Solution Overview
Problem
Current flexible display panels struggle with autonomous rolling and unrolling, often returning to a non-flat state when unrolled, leading to poor display performance due to instability.
Innovation Solution
A flexible display device incorporating a reel, U-shaped guide rail, and magnetic field generating member, where a rectilinear conductor forms a closed circuit with the guide rail, allowing for automatic unrolling and rolling through magnetic field manipulation, maintaining a stable and flat display state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If flexible display panels are made bendable and portable, then flexibility and portability are improved, but autonomous rolling and unrolling capability deteriorates
Solution Approach 1:
The patent replaces traditional mechanical rolling mechanisms with a magnetic field-based control system. A magnetic field generating member (electromagnet) interacts with a magnetic conductor attached to the flexible display panel, enabling autonomous rolling and unrolling through magnetic attraction and repulsion forces, thereby eliminating complex mechanical structures while achieving automated control.
Solution Approach 2:
The patent introduces a magnetic conductor as an intermediary between the flexible display panel and the magnetic field generating member. This magnetic conductor mediates the interaction by concentrating and directing magnetic field lines, enabling effective magnetic coupling and control without direct mechanical contact, thus achieving autonomous rolling capability.
2Area of stationary object
If flexible display panels are unrolled for display, then display area is increased, but stability and flatness deteriorate
Solution Approach 1:
The patent applies preliminary anti-action by using the magnetic field generating member to exert a counteracting magnetic force on the magnetic conductor attached to the flexible display panel. This magnetic force preemptively counteracts the panel's tendency to roll back, maintaining stable flatness during display without requiring additional mechanical support structures.
3Extent of automation
If magnetic field generating member is added to enable autonomous rolling, then automation is improved, but device complexity increases
Solution Approach 1:
The patent extracts the rolling control function from complex mechanical systems and isolates it into a simple magnetic field generating member. By separating the automation function into this single component that interacts through magnetic fields, the overall device complexity is reduced while maintaining autonomous rolling capability.
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
Enables autonomous unrolling and rolling of flexible display panels, ensuring stable and flat display performance by balancing stress through magnetic field adjustments, thereby improving display quality.
Implementation Method 1
a magnetic field generating member configured to provide a magnetic field to the rectilinear conductor
Implementation Method 2
when the rectilinear conductor is energized, the rectilinear conductor can be forced, thereby causing the flexible display panel to be in any of the following states: unrolling in a direction away from the reel; rolling toward the direction of the reel
Data Source
AI summary
A flexible display device includes a flexible display panel, a reel, a substantially U-shaped guide rail, and a magnetic field generating member. The reel is provided with a slit opening in a surface thereof and a rotating shaft inside. The U-shaped guide rail has an open side and a closed end, and the closed end is arranged adjacent to the rotating shaft. The rectilinear conductor is configured to bridge the open side of the U-shaped guide rail to form a closed circuit with the U-shaped guide rail. The magnetic field generating member is configured to provide a magnetic field to the rectilinear conductor. A first side edge of the flexible display panel is connected with the rotating shaft of the reel through the slit opening, and a second side edge of the flexible display panel opposite to the first side edge is connected with the rectilinear conductor.