Flexible Display Panel Cylindrical Stretching Bodies
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Solution Overview
Problem
Flexible OLED display panels prone to cracking or breaking when frequently bent or stretched due to stress on inorganic layers, leading to reduced quality or complete damage.
Innovation Solution
A flexible display panel with a substrate comprising cylindrical surface stretching bodies in an array, where the flexible device is conformal with the substrate, reducing stress on inorganic layers by maintaining a curved structure during bending or stretching.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the flexible display panel is bent or stretched frequently, then the flexibility and adaptability are improved, but the inorganic layers are prone to crack or break under stress, leading to reduced reliability
Solution Approach 1:
The patent applies curvature by forming the flexible substrate with cylindrical surface stretching bodies instead of a flat structure. This cylindrical configuration allows the substrate to bend and stretch along the curved surface without creating stress concentration points, thereby preventing cracks in the inorganic layers while maintaining flexibility for various display configurations
Solution Approach 2:
The patent changes the geometric parameter of the substrate from flat to cylindrical curved surface. This parameter change transforms the stress distribution pattern during bending and stretching, allowing the inorganic layers to conform to the curved geometry without experiencing the tensile stresses that cause cracking in flat-panel configurations
2Manufacturing precision
If the flexible substrate is made completely flat, then the manufacturing precision is improved, but the display panel becomes prone to damage when bent or stretched
Solution Approach 1:
The patent introduces cylindrical curvature to the flexible substrate, replacing the completely flat structure. This curved configuration maintains manufacturing precision during fabrication while inherently providing stress resistance during subsequent bending and stretching operations, as the cylindrical geometry distributes mechanical stresses more evenly throughout the inorganic layers
3Stability of the object's composition
If the flexible device is made conformal with the cylindrical substrate, then the structural integrity is improved, but the device complexity increases
Solution Approach 1:
The patent employs flexible thin-film structures for both the substrate and the flexible device that can conform to the cylindrical surface. This approach maintains structural integrity by ensuring all layers follow the same curved geometry, while the flexibility of thin-film materials allows the complex conformal structure to be manufactured and assembled without excessive rigidity or complexity
Data Source
AI summary
The embodiments of the disclosure provide a flexible display panel, including a flexible substrate, the flexible substrate including a plurality of cylindrical surface stretching bodies in an array, every two adjacent cylindrical surface stretching bodies being connected by their side edges, and a flexible device on the flexible substrate, the flexible device being conformal with the flexible substrate. The embodiments also provide a display device including the flexible display panel and a method for manufacturing the flexible display panel.