Foldable Display Frame Structure for Rigidity During Bending
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Solution Overview
Problem
Foldable display devices face challenges in maintaining rigidity and minimizing damage during folding, especially as they become thinner and more flexible.
Innovation Solution
A foldable display device design featuring a frame with alternating openings and bridges, made of a rigid material, allows for folding while maintaining structural integrity by minimizing deformation and enhancing rigidity through an air gap formation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a rigid frame is used to maintain structural integrity, then strength is improved, but the device cannot be folded
Solution Approach 1:
The frame is segmented into multiple regions by forming opening holes through it and creating bridge structures between these holes. This segmentation allows the frame to be divided into flexible segments (bridges) that can bend while maintaining overall structural integrity, enabling the rigid frame to accommodate folding motion.
Solution Approach 2:
The frame exhibits different local properties: the opening holes create flexible regions that allow bending, while the bridge structures maintain rigid connections. This local differentiation enables specific areas of the frame to be flexible (for folding) while other areas remain rigid (for structural support).
2Ease of operation
If the frame is made thinner to improve flexibility, then ease of operation is improved, but rigidity deteriorates
Solution Approach 1:
By segmenting the frame into opening holes and bridges, the design achieves flexibility without requiring the entire frame to be thin. The bridge structures can be optimized for rigidity while the opening holes provide the necessary flexibility, decoupling the thickness requirements of different functional regions.
Solution Approach 2:
The frame creates a composite structure combining rigid bridge regions with flexible opening hole regions. This composite approach allows the frame to exhibit both rigid and flexible characteristics simultaneously, maintaining rigidity where needed while enabling folding where required.
3Adaptability or versatility
If opening holes are formed in the frame to enable folding, then adaptability is improved, but manufacturing complexity increases
Solution Approach 1:
The frame structure is segmented into repeating patterns of opening holes and bridges, which simplifies the design process and allows for standardized manufacturing approaches. This regular segmentation makes the complex structure more manageable and easier to produce consistently.
Data Source
AI summary
A foldable display device including a display panel including a folding area and a non-folding area, a back plate disposed on the display panel and supporting the display panel, and a frame disposed on the back plate and including a folding part in a region corresponding to the folding area. The folding part can include an opening hole that penetrates the frame and a bridge having one end fixed to the frame. The opening hole and the bridge can be provided in plural in the folding part. A plurality of the opening hole and a plurality of the bridge can be alternately disposed.