Rollable Flexible Display With Synchronized Telescoping Supports
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Solution Overview
Problem
Existing rollable display devices have only one display state and a limited display area, lacking the flexibility and functionality of foldable devices.
Innovation Solution
A rollable flexible display device with a supporting mechanism comprising a first, second, and third supporting member, and a transmission mechanism that allows the second and third supporting members to telescope synchronously, enabling a bilaterally rollable and retractable design with a display area that triples when extended.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If a rollable display device uses a single rolling mechanism, then the device structure is simple, but the display area is limited and cannot achieve multiple display states
Solution Approach 1:
The display device is divided into multiple independent supporting members (first, second, and third supporting members) that can move relative to each other. Each supporting member acts as an independent unit that can be extended or retracted, allowing the display area to be segmented and expanded in multiple directions simultaneously, achieving a display area three times larger than the initial state.
Solution Approach 2:
The second and third supporting members are nested within the first supporting member, similar to a nested doll structure. When extended, these nested members unfold sequentially to increase the display area. When retracted, they fold back into the first supporting member, maintaining a compact form factor while enabling large display area expansion.
2Stability of the object's composition
If a rollable display device uses bilateral rolling mechanisms, then the display area can be extended, but the supporting members may move asynchronously causing structural instability
Solution Approach 1:
The transmission mechanisms for the second and third supporting members are merged into a single integrated system. The first transmission mechanism controls both the second supporting member through direct connection and the third supporting member through the sliding assembly, ensuring synchronized movement. This unified transmission approach maintains structural stability while avoiding the need for two completely independent control systems.
Solution Approach 2:
The sliding assembly acts as an intermediary component that transmits motion from the first transmission mechanism to the third supporting member. This intermediary ensures that the third supporting member moves in synchronization with the second supporting member, maintaining structural stability during extension and retraction operations.
3Adaptability or versatility
If the supporting members are extended to increase display area, then the display flexibility is improved, but the screen may become loose and float without proper tension
Solution Approach 1:
The coil springs are pre-installed and pre-tensioned within the rolling mechanisms before the display device is used. This preliminary action ensures that as the supporting members extend and the screen becomes looser, the springs automatically generate increasing tension to maintain proper screen tightness. The damping members are also pre-positioned to provide immediate resistance against screen floating during extension operations.
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 device achieves a larger display area in a second mode, providing enhanced flexibility and usability by allowing the display area to triple when fully extended, while maintaining tension and preventing screen floating through the use of coil springs and damping members.
Implementation Method 1
a first elastic component arranged in the first direction and configured to store first elastic potential energy when the first supporting member is in the first position
Implementation Method 2
a first damping component arranged in the first direction and configured to store first damping energy when the first supporting member is in the first position
Data Source
AI summary
The present application provides a rollable flexible display device and a terminal equipment. The rollable flexible display device includes: a flexible screen; a rolling mechanism in which opposite ends of the flexible screen are respectively wound in the rolling structure; and a supporting mechanism including a first supporting member, a second supporting member, and a third supporting member, the second and third supporting members are respectively fixed on the rolling mechanism, the second and third support members are respectively embedded in the first support member; and a transmission mechanism fixed on the supporting mechanism and driving the second and the third support members to move synchronously in the first supporting member.