Dual-Drum Rollable Display Structure for Large Area and Lower Power
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Solution Overview
Problem
Rollable displays face challenges with increased size and weight, necessitating larger drums and external power sources, leading to installation restrictions and unnecessary power consumption.
Innovation Solution
A display apparatus with a dual-drum system, including a first and second roller, linked by rotatable arms and driven by motors, allows for flexible accommodation and exposure of display regions, optimizing weight distribution and reducing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the size of the rollable display is increased, then the display area is improved, but the size and weight of the drum accommodating the display must be increased, which restricts installation and movement
Solution Approach 1:
The display is divided into multiple segments (first display region, second display region, third display region) that can be independently rolled around different drums (first drum, second drum). This segmentation allows the display area to be increased without requiring a single large drum, thereby reducing the weight and installation restrictions while maintaining the total display area.
2Area of stationary object
If the size of the display is increased, then the display area is improved, but an external power source becomes necessary, leading to unnecessary power consumption
Solution Approach 1:
The display is segmented into multiple regions that can be independently controlled and rolled. This allows the display to be wound into compact drums when not in use, reducing the active display area and thereby minimizing power consumption. The system can activate only the necessary display regions based on usage requirements.
Solution Approach 2:
The display system dynamically adjusts its configuration by rolling the display regions into drums or unrolling them as needed. This dynamic capability allows the system to optimize power consumption by maintaining a compact, low-power state when the display is not actively being viewed, while still providing large display area when required.
3Area of stationary object
If the size of the rollable display is increased, then the display area is improved, but the drum size must be increased, which gives restriction in installation and movement
Solution Approach 1:
The display system is divided into multiple independent drum units (first drum, second drum) that can be separately installed and moved. This segmentation allows for more flexible installation options compared to a single large drum, and the individual drums can be moved more easily while still providing a large total display area when unrolled.
Solution Approach 2:
The display regions are rolled in different dimensional directions around separate drums (first display region around first drum, second display region around second drum). This multi-dimensional arrangement allows the system to achieve large display area without requiring a single large drum, thereby improving installation flexibility and ease of movement.
Data Source
AI summary
A display apparatus includes a display including an upper region, a lower region, and an intermediate region; a first roller around which the upper region of the display is to be rolled; a second roller around which the lower region of the display is to be rolled; a first drum rotatably supporting the first roller; a second drum rotatably supporting the second roller; a main body disposed between the first drum and the second drum in which the intermediate region is disposed on a front surface of the main body; a first link connecting a left end of the first drum and a right end of the second drum and is rotatably connected to the main body; a second link connecting a right end of the first drum and a left end of the second drum and is rotatably connected to the main body; and a driver configured to rotate the first link and the second link in opposite directions, and the first drum includes first roller grooves to which the first roller is rotatably coupled, and the second drum includes second roller grooves to which the second roller is rotatably coupled.