Rollable Display Link Assemblies Elastic Plate Synchronization
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Solution Overview
Problem
Rollable display devices with flexible panels face damage due to tilting during rolling or unrolling operations, caused by asynchronous operation of link assemblies, leading to collisions with the device body.
Innovation Solution
The implementation of link assemblies with an elastic plate and center link connectors that exert resilient force to ensure synchronized rotation, preventing tilting and maintaining balance during the rolling and unrolling of the flexible display panel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If two link assemblies are used to unroll the flexible display panel, then the display panel can be fully extended, but the link assemblies may operate asynchronously causing the panel to tilt and collide with the device body
Solution Approach 1:
An elastic plate is introduced as an intermediary component between the two link assemblies. This elastic plate deforms elastically to accommodate and synchronize the motion of both link assemblies, ensuring they move in unison and preventing the flexible display panel from tilting during extension or retraction
Solution Approach 2:
The elastic plate changes its physical state (deformation) in response to the motion of the link assemblies. By utilizing elastic deformation, the system dynamically adjusts to maintain synchronization between the two link assemblies throughout the motion range
2Weight of moving object
If the flexible display panel is rolled or unrolled, then portability is improved, but the panel may be damaged due to tilting and collision with the device body
Solution Approach 1:
The elastic plate serves as a preventive measure by maintaining synchronized operation of the link assemblies before tilting can occur. This proactive synchronization prevents the harmful collision between the flexible display panel and the device body during rolling or unrolling operations
3Volume of moving object
If link assemblies are designed to be compact, then device size is reduced, but synchronization control becomes more difficult
Solution Approach 1:
The elastic plate creates a self-synchronizing mechanism where the physical deformation of the elastic material automatically coordinates the motion of the two link assemblies. This passive elastic coupling eliminates the need for complex active control systems, sensors, or motors to maintain synchronization, thereby reducing overall device complexity while maintaining compact dimensions
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
This solution prevents damage to the flexible display panel and the device body by ensuring balanced operation of the link assemblies, enhancing the safety and lifespan of the rollable display device.
Implementation Method 1
an elastic plate fixed to the lower link frame... Each of the two link assemblies collapsing inward as the lower link frame is rotated by the link drive unit to roll the flexible display panel onto the main roller
Data Source
AI summary
A rollable display device is provided. The rollable display device may include a flexible display panel, a body including a main roller, around which the flexible display panel is wound, and a link drive unit for moving the flexible display panel, and two link assemblies for connecting the link drive unit and the flexible display panel to each other. Each of the link assemblies may include an upper link frame, a lower link frame, a center link connector, and an elastic plate. The upper link frame and the lower link frame may be coupled to the center link connector independently of each other. The elastic plate may allow the lower link frame to operate later than the upper link frame.