Stepped Support Structure for Flexible Display Panel
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Solution Overview
Problem
Conventional rollable display devices face issues with friction and electromagnetic interference that shorten the lifespan of the display panel when it is stretched or rewound, necessitating the development of a flexible display solution that mitigates these problems.
Innovation Solution
A flexible display screen with a stepped support structure and a reel mechanism featuring a spiral winding structure, coil springs, and rollers or balls to reduce friction and electromagnetic interference, along with a flexible layer that wraps around the reel, ensuring the display panel is not in contact with itself, thereby extending its lifespan.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the display panel is wrapped around the reel in a conventional rollable display device, then the display can be made compact when rolled up, but friction and electromagnetic interference are generated that greatly affect lifespan of the display panel
Solution Approach 1:
A flexible layer is introduced as an intermediary between the display panel and the reel mechanism. The flexible layer wraps around the reel instead of the display panel itself, preventing direct contact and thus eliminating friction and electromagnetic interference between the display panel and the reel, while still enabling the rolling function
Solution Approach 2:
The wrapping function is extracted from the display panel and transferred to a separate flexible layer. This separation allows the display panel to remain protected while the flexible layer performs the mechanical wrapping action around the reel
2Adaptability or versatility
If the display panel is made flexible to enable rolling, then rollable or foldable display functionality is achieved, but the display surface may become uneven or curved when expanded
Solution Approach 1:
The support structure is divided into multiple support plates arranged in a stepped configuration. Each support plate provides a flat surface that collectively supports the entire display panel, ensuring the display surface remains flat when expanded while allowing the panel to be flexible for rolling
Solution Approach 2:
The support structure uses a stepped configuration with multiple levels corresponding to the laminated support plates. This three-dimensional stepped structure provides support at different heights, ensuring the display surface maintains flatness while accommodating the flexible nature of the panel
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 reduces friction and electromagnetic interference, extending the lifespan of the display panel and improving user experience by maintaining a flat display surface, even when expanded or collapsed.
Implementation Method 1
the reel mechanism further includes at least one coil spring mounted on one end of the reel
Implementation Method 2
The reel mechanism further includes balls or rollers. The balls or the rollers are disposed on a surface of the reel facing the display panel
Data Source
AI summary
The present invention provides a flexible display screen and a display device. The flexible display screen includes a display panel, a reel mechanism, and a support structure. The display panel includes a display surface and a support base away from the display surface. The support base is a stepped structure. The reel mechanism is disposed on a side of the display panel. A part of the display panel is wrapped around inside the reel mechanism. The support structure includes a plurality of support plates.