Rollable Display Panel Frame With Lead Screw Guided Unwinding
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Solution Overview
Problem
There is a need for a mechanism that allows for stable winding and unwinding of flexible display panels, as well as a frame structure that can be covered by a display panel or opened.
Innovation Solution
A display device comprising a flexible display panel, a panel roller, a bottom frame, a first vertical frame, a lead screw, a gearbox system, and a bar coupled to a slider, which enables stable winding and unwinding of the panel and allows the frame structure to be covered or opened.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a flexible display panel is wound around a roller, then the display device achieves compact storage and transport capability, but the mechanism for winding and unwinding becomes complex and requires precise control
Solution Approach 1:
The flexible display panel is nested around the roller in a concentric manner, with the panel forming multiple layers as it winds. This nesting approach allows compact storage volume while the roller provides a fixed axis that simplifies the winding mechanism, avoiding the need for complex control systems.
Solution Approach 2:
The system changes the radial parameter of the display panel by controlling its winding radius around the roller. By maintaining a constant roller diameter as the reference, the panel transitions from a flat state to a curved wound state, achieving compact storage without requiring complex variable-radius control mechanisms.
2Shape
If the frame structure is designed to be coverable by the display panel, then the display device achieves a sleek integrated appearance, but the frame structure becomes complex requiring precise coordination with panel movement
Solution Approach 1:
The frame structure is designed with movable portions that can dynamically adjust their position in coordination with the display panel's winding and unwinding movements. When the panel is wound, the frame portions retract or adjust to be covered; when unwound, they extend to provide structural support, achieving integrated appearance without permanent complex structures.
Solution Approach 2:
The frame structure serves multiple functions: it provides structural support when the panel is unwound for display, and can be covered or retracted when the panel is wound for storage. This multi-functionality allows the same frame components to accommodate both the operational and storage states, reducing overall structural complexity.
3Adaptability or versatility
If the display panel is made flexible for winding capability, then the device achieves portability and storage flexibility, but the panel structure becomes more vulnerable to damage during winding and unwinding operations
Solution Approach 1:
The system incorporates protective measures before the panel undergoes winding stress. Guide structures and support surfaces are designed to ensure the panel enters the winding process in a controlled manner, preventing sharp folds or creases that could damage the flexible display. The frame structure provides protective enclosures that cushion the panel during transitions.
Solution Approach 2:
Intermediate guide structures and support elements act as mediators between the flexible panel and the roller. These intermediaries ensure smooth transition of the panel during winding and unwinding, distributing mechanical stress evenly and preventing concentrated loads that could cause damage to the vulnerable flexible display.
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 provides a stable mechanism for winding and unwinding flexible display panels and a versatile frame structure that can be adapted for various display configurations.
Implementation Method 1
a first lead screw which is located adjacent and parallel to the first vertical frame, and rotatably installed in the bottom frame; a first slider which moves in an up-downward direction in the first lead screw due to rotation of the first lead screw
Implementation Method 2
a second gearbox which is mounted on a lower surface of the bottom frame, and rotates the first lead screw by receiving power from the first gearbox
Implementation Method 3
a panel roller which extends long, and around which the display panel is wound or from which the display panel is unwound
Data Source
AI summary
A display device is disclosed. The display device may comprise: a flexible display panel; a panel roller which is elongated and around which the display panel is wound or unwound; a bottom frame having the panel roller rotatably mounted thereon; a first vertical frame elongated in a direction crossing the lengthwise direction of the panel roller, and fixed to the bottom frame; a first lead screw positioned adjacent and parallel to the first vertical frame and rotatably coupled to the bottom frame; a first gear box positioned adjacent to the first vertical frame and installed on the upper surface of the bottom frame; a second gear box installed on the lower surface of the bottom frame and rotating the first lead screw by receiving power from the first gear box; a first slider which moves on the first lead screw in the vertical direction according to the rotation of the first lead screw; and a bar to which the end portion of the display panel is fixed and which is coupled to the first slider.