Pre-stressed Flexible OLED Panel Shape Stability
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Solution Overview
Problem
Conventional OLED panels require continuous external force to maintain non-planar shapes, which is impractical and often damages the panel during shaping processes.
Innovation Solution
A flexible OLED panel with a connection mechanism that allows it to be pre-stressed into a non-planar configuration without external force, enabling it to maintain shape and deform into different forms with adjustable connections, such as lamination or mechanical attachments, allowing self-support and easy shaping into various forms like cylindrical or conical shapes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If continuous external force is applied to maintain non-planar shape, then the shape stability is improved, but the device complexity and operational impracticality increase
Solution Approach 1:
The OLED panel is pre-stressed during fabrication to establish internal residual stresses that automatically maintain the non-planar shape without requiring continuous external force. The panel is formed into the desired curved configuration and then fixed in that state, creating self-sustaining internal stresses that preserve the shape indefinitely.
Solution Approach 2:
The panel structure serves itself by using its own internal residual stresses to maintain the non-planar configuration. The pre-stressed material properties enable the panel to self-support its curved shape without external fixtures, frames, or continuous applied forces.
2Shape
If external force is applied to shape the panel into non-planar configuration, then the shape formation is achieved, but material stress and potential damage occur
Solution Approach 1:
The panel is pre-stressed and shaped during the fabrication process before final assembly, allowing the material to be formed into the desired configuration while the stress is still manageable. This preliminary shaping creates permanent internal stresses that maintain the non-planar form without requiring high external forces during operation.
Solution Approach 2:
The mechanical properties and stress state of the panel are changed during fabrication by applying controlled pre-stressing that permanently alters the internal stress distribution. This parameter change enables the panel to maintain non-planar shapes with reduced operational stress compared to dynamically forcing the same configuration.
3Stability of the object's composition
If rigid fixing is used to maintain non-planar shape, then the shape stability is improved, but the adaptability and ease of shaping are reduced
Solution Approach 1:
The panel transitions from a dynamically forced configuration to a statically stable pre-stressed configuration. Once pre-stressed into the desired shape, the panel maintains that configuration through internal stresses rather than external constraints, providing both stability and the ability to be reconfigured by applying new pre-stress patterns.
Data Source
AI summary
Devices are provided that include a flexible OLED panel and a connection between points of the flexible OLED panel that causes the flexible OLED panel to be disposed in a non-planar configuration. Alternatively or in addition, the connection may be a flexible component connected to the flexible OLED panel, which is configured to maintain the flexible OLED panel in the non-planar shape.