Flexible Screen Support Linkage for Wrinkle-Free Folding
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Flexible display devices experience stretching or wrinkling during folding, leading to abnormal displays after multiple foldings due to mismatched bending radii between the flexible screen and the support apparatus, which reduces the screen's service life.
Innovation Solution
A support apparatus with a rotary shaft assembly and linkage mechanism that adjusts the position of the flexible screen relative to the support apparatus during folding, using at least three parallel rotary shafts to maintain an arc-like cross-sectional shape and prevent stretching or squeezing, thereby maintaining the screen's flatness and extending its lifespan.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the flexible screen is folded with a fixed support apparatus, then the device achieves compact folding and portability, but the flexible screen is stretched or squeezed due to mismatched bending radii, causing wrinkles and display abnormalities
Solution Approach 1:
The support apparatus transitions from a fixed structure to a dynamic adjustable structure. The linkage assembly allows the distance between the first support portion and rotary shaft assembly to change during folding, enabling the bending radius to adapt to the flexible screen's requirements while maintaining compact folding form factor.
Solution Approach 2:
The patent changes the geometric parameters of the support apparatus during folding. By adjusting the distance between support portions through the linkage assembly, the bending radius parameter is dynamically modified to match the flexible screen's requirements, preventing stretching and wrinkling.
2Duration of action of moving object
If the flexible screen is folded multiple times with a fixed support apparatus, then the device achieves repeated usability, but the flexible screen accumulates damage from stretching and squeezing, reducing service life
Solution Approach 1:
The dynamic adjustment mechanism ensures that each folding cycle occurs with optimized geometric parameters. The linkage assembly enables the support apparatus to adapt to the flexible screen's elastic deformation characteristics, reducing cumulative damage from repeated folding and extending service life.
3Ease of manufacture
If the support apparatus uses a simple fixed structure, then the device achieves structural simplicity and ease of manufacture, but the flexible screen experiences uneven support and deformation during folding
Solution Approach 1:
The support apparatus is divided into multiple segments: the rotary shaft assembly with multiple rotary shafts, the linkage assembly with multiple linkages, and the first and second support portions. This segmentation allows each component to perform its specific function, achieving uniform support across the flexible screen while maintaining reasonable manufacturing complexity.
Data Source
AI summary
A support apparatus for a flexible screen, a foldable display module and a display device. The support apparatus for the flexible screen includes a support portion and a driving assembly. The support portion includes a first support portion and a second support portion connected with the first support portion. The driving assembly includes a rotary shaft assembly and a linkage assembly connected with the rotary shaft assembly. The rotary shaft assembly includes a plurality of rotary shafts arranged in parallel. The second support portion is slidably provided on the rotary shaft assembly and can be bent or unfolded together with the rotary shaft assembly. When the rotary shaft assembly is bent, the first support portion is driven by the linkage assembly to move away from or close to the rotary shaft assembly.