Foldable Display Shield Pattern Layout for Stable Folding Performance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Foldable display devices face durability issues due to repeated folding and unfolding, which can lead to reduced impact resistance and degradation of driving characteristics.
Innovation Solution
A foldable display device design featuring a larger second shield pattern in the folding region and a smaller first shield pattern in the non-folding region, along with strategically placed openings in the plate bottom, to enhance durability and maintain driving characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a shield pattern is formed in the folding region, then impact resistance is improved, but parasitic capacitance increases causing threshold voltage fluctuations
Solution Approach 1:
The patent applies different shield pattern configurations to different regions: the first shield pattern uses a first configuration in the non-folding region and a second configuration in the folding region. This local differentiation allows the folding region to have optimized shield characteristics that reduce parasitic capacitance while maintaining impact resistance, thereby resolving the contradiction between strength and reliability.
2Adaptability or versatility
If the display device is folded repeatedly, then portability is improved, but durability decreases
Solution Approach 1:
The patent implements region-specific shield patterns where the folding region has a distinct second configuration compared to the non-folding region's first configuration. This local optimization enhances the folding region's ability to withstand repeated folding operations, thereby improving durability while maintaining the portability benefits of foldability.
Solution Approach 2:
The shield patterns are pre-configured in specific regions before the device undergoes repeated folding. The second shield pattern configuration in the folding region is designed in advance to anticipate and mitigate the effects of repeated mechanical stress, thereby maintaining durability over time.
3Reliability
If a shield pattern is formed to reduce threshold voltage fluctuations, then driving characteristics are maintained, but device complexity increases
Solution Approach 1:
Instead of implementing a complex uniform shield pattern across the entire display, the patent uses local quality by applying different shield configurations only where needed: the first configuration in non-folding regions and the second configuration in folding regions. This approach maintains driving characteristics while minimizing overall device complexity.
Data Source
AI summary
A foldable display device includes a display panel including a plurality of sub-pixels and having a first shield pattern in a non-folding region and a second shield pattern in a folding region; a cover window over the display panel, wherein an area of the second shield pattern is larger than an area of the first shield pattern.