Flexible Display Curling Mechanism with Electromagnet and Spring Tension
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Solution Overview
Problem
Conventional flexible screen devices have limited folding modes and poor folding effects, restricting their usability and durability.
Innovation Solution
A display device with a curling mechanism featuring a metal plate, electromagnet structure, and a combination of constant-force coil spring and sliding shaft, allowing for tensioned and flat surface extension and curling of the flexible display, along with a thermoplastic urethane coating for protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional folding mechanism is used for flexible screens, then the device can be folded, but the opening mode is limited and the folding effect is poor
Solution Approach 1:
The patent implements a dynamic curling mechanism where the flexible display can transition between multiple states (fully extended, partially curled, fully curled) through a reel-based system. This dynamic structure enables versatile opening modes including outward folding and inward folding, resolving the limitation of conventional fixed folding mechanisms while ensuring reliable folding effects through the tensioning force of the reel mechanism
2Weight of moving object
If the flexible display is made thinner and more lightweight, then portability is improved, but the structural strength for folding may be compromised
Solution Approach 1:
The patent employs a flexible display structure with thin film construction that maintains both light weight and folding capability. The flexible display includes a flexible substrate with display components that can bend and curl without breaking, achieving portability through reduced weight while maintaining structural integrity for folding through the inherent flexibility of the thin film construction
Solution Approach 2:
The patent introduces a metal plate with pattern region as an intermediary component between the flexible display and the reel mechanism. This metal plate provides structural support and attachment points for folding operations, enabling the thin flexible display to achieve reliable folding through the mediating role of the metal reinforcement plate
3Area of moving object
If the flexible display is extended to increase display region, then the effective display area is enlarged, but the surface flatness may be compromised during curling
Solution Approach 1:
The patent implements a dynamic tensioning system using a reel mechanism that maintains surface flatness during both extended and curled states. When the flexible display is extended, the reel provides controlled tension to keep the surface flat. During curling operations, the dynamic adjustment of the reel mechanism ensures the display surface maintains its flatness throughout the transformation, resolving the contradiction between large display area and 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
Enables a large effective display region with improved portability and durability, ensuring a good display effect and protection against external damage.
Implementation Method 1
the electromagnet structure is energized to magnetically adsorb and fix the metal plate
Implementation Method 2
a constant-force coil spring installed on the sliding shaft
Data Source
AI summary
A display device is provided, which includes a flexible display screen and a curling device. The flexible display screen includes a metal plate, all or a part of the metal plate is provided with a pattern region, and the metal plate is curlable in the pattern region. The flexible display screen corresponding to the pattern region is completely wound on the curling device or partially wound on the curling device.