Rollable Display Double Roller Mechanism
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Solution Overview
Problem
Conventional rollable display apparatuses face limitations in that the lower non-display area of flexible display panels can be narrow, causing the panel driving circuit unit to be damaged when wound or unwound, which reduces its reliability.
Innovation Solution
A rollable display apparatus with a double roller structure and a panel extension sheet that allows the flexible display panel to be fully unloaded from the housing module, preventing the panel driving circuit unit from being wound around the roller and thus protecting it from damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a narrow lower non-display area is used in the flexible display panel, then the device can be made more compact, but the panel driving circuit unit gets wound around the roller causing damage and reduced reliability
Solution Approach 1:
The panel driving circuit unit is extracted from the flexible display panel and mounted separately on the housing module. This separation allows the circuit unit to remain stationary while the display panel is wound around the roller, preventing the circuit from being damaged by the winding process.
Solution Approach 2:
A connection structure (such as a flexible printed circuit board or connector) is introduced as an intermediary between the flexible display panel and the panel driving circuit unit. This intermediary allows electrical connection while accommodating the mechanical separation, enabling the panel to be wound without damaging the rigid circuit unit.
2Area of moving object
If the lower non-display area is made narrow, then the display area can be maximized, but the display area becomes hidden by the housing module during winding/unwinding
Solution Approach 1:
The panel driving circuit unit is extracted and mounted on the housing module rather than being integrated into the flexible display panel. This allows the entire display area of the flexible panel to be unloaded and visible outside the housing module during operation, as the circuit unit no longer occupies space within the panel's non-display area.
3Adaptability or versatility
If the panel driving circuit unit is connected to the flexible display panel, then electrical connection is achieved, but the circuit unit gets damaged when wound around the roller
Solution Approach 1:
The panel driving circuit unit is extracted from the flexible display panel and mounted separately on the housing module. This physical separation eliminates the risk of the rigid circuit unit being damaged by winding around the roller, while electrical connection is maintained through a separate connection structure.
Solution Approach 2:
The display system is segmented into two independent parts: the flexible display panel that can be wound around the roller, and the rigid panel driving circuit unit that remains stationary on the housing module. This segmentation allows each component to be optimized for its specific function without compromising the other.
Data Source
AI summary
A rollable display apparatus includes a flexible display panel, a panel extension sheet connected to the flexible display panel, and a housing module. The flexible display panel is configured to be loaded into and unloaded from the housing module. The rollable display apparatus further includes a roller part in the housing module that has a double roller structure. The roller part is configured to individually wind and unwind each of the panel extension sheet and the flexible display panel.