Rollable Display Support Plate for Flatness and Winding
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Solution Overview
Problem
Flexible display panels in rollable display apparatuses suffer from poor recovery ability, leading to sagging at edges and bulging at the central region when unfolded, affecting user experience and potentially damaging the housing.
Innovation Solution
A display apparatus featuring a flexible support plate that attaches to the flexible display panel, providing support to both edges and the central region, ensuring the panel remains flat when unfolded, and utilizing a scissor mechanism and springs for smooth extension and retraction, along with an adhesive film for secure attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a flexible display panel is used in a rollable display apparatus, then the display apparatus becomes portable and space-saving, but the flexible display panel suffers from poor recovery ability leading to sagging at edges and bulging at central region
Solution Approach 1:
A flexible support plate is introduced as an intermediary component between the reel and the flexible display panel. The support plate extends along the entire length of the display panel and provides continuous support to both edges and central region, preventing sagging and bulging while allowing the panel to be rolled up for compact storage.
Solution Approach 2:
The support plate changes its structural parameters dynamically - it remains rigid enough to provide support when the display is extended, but becomes flexible enough to be rolled up with the display panel. This parameter change enables the system to maintain flatness during use while achieving compact storage.
2Ease of operation
If the flexible display panel is extended out, then the display is accessible for use, but friction and peeling forces increase affecting the housing and reducing lifespan
Solution Approach 1:
The flexible support plate acts as a mediator between the flexible display panel and the housing. It distributes the friction and peeling forces along its entire length rather than concentrating them at specific points, reducing the harmful effects on the housing while maintaining ease of operation.
Solution Approach 2:
The support plate provides beforehand cushioning by being pre-positioned between the display panel and the housing. It absorbs and distributes the mechanical stresses before they can damage the housing, thereby extending the lifespan of the display apparatus.
3Volume of moving object
If the flexible display panel is rolled up for storage, then space is saved, but the winding process becomes complex without proper support
Solution Approach 1:
The flexible support plate is merged with the flexible display panel, forming a unified structure that moves together as a single unit. This integration simplifies the winding process by eliminating the need for separate handling mechanisms, while still providing the necessary support during both extended and rolled-up states.
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 flexible support plate maintains the overall flatness of the display panel, reduces friction and peeling forces, and simplifies the winding process, enhancing user experience and extending the lifespan of the display apparatus.
Implementation Method 1
an adhesive film is provided on a surface of the flexible support plate facing away from the flexible display panel
Implementation Method 2
The first spring is configured such that when the first reel rotates in a first rotation direction, the first spring is tightened to apply a first restoring force for driving the first reel to rotate in a second rotation direction
Implementation Method 3
The second spring is configured such that when the second reel rotates in a third rotation direction, the second spring is tightened up to apply a second restoring force for driving the second reel to rotate in a fourth rotation direction
Implementation Method 4
reduces friction and peeling forces
Data Source
AI summary
A display apparatus includes a first housing provided with an opening therein, a first reel rotatably disposed in the first housing, a second reel rotatably disposed in the first housing, a flexible display panel, and a flexible support plate. The second reel and the first reel are arranged at intervals and extend in a same direction. A first end of the flexible display panel is connected to the first reel and wound on the first reel, and a first end of the flexible support plate is connected to the second reel and wound on the second reel. The flexible display panel and the flexible support plate are configured such that when the flexible display panel and the flexible support plate extend out of the first housing through the opening, the flexible support plate is capable of gradually attaching to the first housing to support the flexible display panel.