Foldable Display Curved Boundary Segmentation
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Solution Overview
Problem
Flexible display panels, such as organic light-emitting display apparatuses, face stress-related issues like protection film exfoliation or deformation when repeatedly opened and folded, leading to potential damage.
Innovation Solution
A foldable display apparatus comprising separate flexible panels supported by cases connected via a link member, with curved boundary regions and non-display regions featuring corrugated wrinkle patterns, ensuring the non-display regions are not visible from the front side, and adhesive films for secure attachment, allowing for a continuous image display without visible disconnections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the display panel is made flexible to enable folding, then portability is improved, but the protection film may exfoliate or deform due to repeated stress from opening and folding
Solution Approach 1:
The display panel is divided into multiple separate flexible panels (first flexible panel and second flexible panel) that are coupled to respective cases. This segmentation allows each panel to be independently supported and reduces the stress concentration that would occur in a single continuous panel during folding operations, thereby preventing protection film exfoliation while maintaining flexibility and portability.
2Reliability
If the flexible panels are made to curve at boundary regions to reduce stress, then durability is improved, but the non-display regions may become visible from the front side, affecting image quality
Solution Approach 1:
The curved regions are specifically positioned within the non-display regions of the flexible panels, while the display regions remain substantially flat. This local differentiation allows the boundary regions to curve for stress reduction and durability improvement, while the display areas maintain their flatness to ensure high-quality image display without visible distortions or unwanted curvature effects.
3Reliability
If separate flexible panels are used instead of a single continuous panel, then stress on folding portions is reduced, but the complexity of the device structure increases
Solution Approach 1:
The first and second flexible panels are nested within respective first and second cases, with each panel coupled to its corresponding case. This nesting arrangement allows the multiple panels to be organized in a structured manner that reduces overall device complexity compared to alternative configurations, while still providing the durability benefits of separate panels that reduce stress on folding portions.
Data Source
AI summary
A foldable display apparatus includes: a first flexible panel and a second flexible panel, the first and second flexible panels being separate from each other; a first case supporting the first flexible panel and a second case supporting the second flexible panel; and a link member foldably connecting the first and second cases, and adjacent boundary regions of the first and second flexible panels are curved.