Flexible Display Panel Stress Release via Segmented Bridging Gaps
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Solution Overview
Problem
Curved display devices face stress concentration and wrinkle issues at top corners during bending due to traditional flat panel design, leading to reduced viewing angles and visual experience.
Innovation Solution
A display panel with a flexible substrate divided into regions, featuring light emitting structures and flexible bridging parts with opening gaps to release stress, allowing for a stretchable structure that reduces stress effects and maintains a quadrilateral stereo display form.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a traditional flat panel design is used for curved display devices, then the manufacturing process is simple, but stress concentration and wrinkle issues occur at top corners during bending
Solution Approach 1:
The patent divides the display panel into multiple regions (first region with light emitting structures, second region without, and transition regions) and introduces opening gaps to segment the continuous structure. This segmentation allows stress to be released at specific locations during bending, preventing wrinkle formation while maintaining manufacturing feasibility through region-based design
Solution Approach 2:
The patent applies different structural characteristics to different regions: the first region has light emitting structures with opening gaps for stress release, the second region has a different structure for support, and transition regions connect them. This local differentiation allows each region to perform its specific function optimally while collectively solving the stress concentration problem
2Reliability
If opening gaps are introduced to release stress, then stress concentration is reduced, but the structural integrity may be compromised
Solution Approach 1:
The opening gaps segment the continuous structure into manageable sections that can flex independently during bending. This segmentation prevents stress accumulation while the gaps are strategically positioned to maintain overall structural coherence and integrity
Solution Approach 2:
The transition regions act as intermediaries between the first region (with opening gaps) and the second region (without gaps). These transition regions provide a gradual structural transformation that maintains overall integrity while allowing stress release in the first region
3Adaptability or versatility
If the display panel is made flexible to achieve curved form, then viewing angles are improved, but stress concentration occurs during bending
Solution Approach 1:
The opening gaps in the first region allow the flexible substrate to bend without creating stress concentration points. The segmented structure enables the panel to achieve curved forms while releasing stress during the bending process, maintaining reliability
Data Source
AI summary
The present disclosure relates to a display panel and a curved display device. The display panel includes a flexible substrate (100), including a first region (BB) and a second region (AA). The first region (BB) includes: a plurality of light emitting structures (110) with a first opening gap (200) formed between two adjacent light omitting structures (110); and a plurality of flexible bridging parts (120), with at least one flexible bridging part (120) connecting two adjacent light emitting structures (110).