Flexible Display Screen Curling Mechanism for Compact Volume
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Solution Overview
Problem
Existing flexible screens occupy a large space due to their size and structure, which limits their portability and convenience.
Innovation Solution
A flexible display device is designed with a housing assembly and a flexible display screen that curls into three portions, where the curling directions of the first and third portions are opposite, allowing the second portion to wrap them, reducing the overall volume and enabling easier carrying.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If the flexible display screen is made large to maintain display area, then the display area is improved, but the volume occupied increases
Solution Approach 1:
The flexible display screen is segmented into three distinct curling portions (first, second, and third curling portions) that can curl in different directions. This segmentation allows the display to be divided into functional zones, enabling the large display area to be compacted into a smaller volume through differential curling patterns.
Solution Approach 2:
The first and third curling portions are positioned inside the second curling portion when curled, creating a nested configuration similar to nested dolls. This nesting arrangement allows the display screen to reduce its overall volume significantly while maintaining its full display area, as the segmented portions fit within each other's curved spaces.
2Volume of moving object
If the flexible display screen is made compact to reduce volume, then the volume occupied is reduced, but the display area is compromised
Solution Approach 1:
The flexible display screen employs dynamic curling mechanisms where different portions can curl in different directions (clockwise or counterclockwise) independently. This dynamic capability allows the display to transition between expanded and compact states, maintaining full display area when needed while achieving compact volume when portability is required.
Solution Approach 2:
The display screen changes its geometric parameters by altering the curling direction and degree of different portions. By controlling which portions curl clockwise and which curl counterclockwise, the system can adjust its overall shape and volume while preserving the integrity and area of the display surface.
3Device complexity
If the flexible display screen curls in a single direction to simplify structure, then the device complexity is reduced, but the curling efficiency and compactness are worsened
Solution Approach 1:
The curling structure is segmented into three independent portions that can curl in different directions. While this increases structural complexity compared to a single-direction curl, it dramatically improves curling efficiency by allowing the display to form a more compact nested configuration, with the first and third portions fitting inside the second portion.
Solution Approach 2:
The patent employs asymmetric curling patterns where different portions of the display curl in opposite directions (clockwise versus counterclockwise). This asymmetric approach creates a more efficient compact form factor compared to symmetric single-direction curling, as it allows for better spatial arrangement and nesting of the curled portions.
Data Source
AI summary
A flexible display device is provided. The flexible display device includes a housing assembly, and a flexible display screen located in the housing assembly. The flexible display screen includes a backplate layer, a display panel located on the backplate layer, and a cover-plate layer located on the display panel. When the flexible display screen is curled, the backplate forms a first curling portion, the display panel forms a second curling portion, and the cover-plate layer forms a third curling portion. The first curling portion and the third curling portion are located inside the second curling portion.