Flexible Display Curving-Restricting Structures for Over-Bending Protection
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Solution Overview
Problem
Flexible display devices using thin film transistors are prone to damage when bent beyond a certain extent, leading to unusual displaying due to the brittle nature of ceramic materials used in the transistors array.
Innovation Solution
Incorporating a plurality of curving-restricting structures with slanted side walls on the display panel, either on the surface or bottom, to resist bending and prevent over-bending damage, thereby protecting internal elements and improving reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If thin film transistors array is used to control pixels, then the display device can be made flexible and thin, but the device becomes vulnerable to damage when bent beyond a certain extent due to brittle ceramic materials
Solution Approach 1:
The invention divides the protective function into multiple segments by introducing a plurality of curving-restricting structures distributed across the display panel. Each structure acts as an independent protective element that collectively prevents over-bending, resolving the contradiction between flexibility and damage resistance through distributed structural support.
Solution Approach 2:
The curving-restricting structures are pre-configured on the display panel before use, establishing a preliminary protective mechanism that activates when bending occurs. This preliminary structural arrangement prevents the brittle TFT materials from experiencing damaging stresses during normal flexible operation.
2Adaptability or versatility
If the display panel is made flexible to enable bending, then portability is improved, but unusual displaying occurs when the panel is over-bent
Solution Approach 1:
The curving-restricting structures apply a preliminary counter-action to prevent over-bending before it can occur. The slanted side walls are positioned and oriented to resist excessive curvature, creating a mechanical barrier that maintains display stability while preserving flexible bending within safe limits.
Solution Approach 2:
The invention applies local quality by placing curving-restricting structures specifically in regions where bending control is needed, with slanted side walls oriented to provide directional resistance. This localized structural enhancement maintains display stability in critical areas while preserving overall flexibility.
3Reliability
If curving-restricting structures with slanted side walls are added to restrict bending, then reliability is improved, but device complexity increases
Solution Approach 1:
The curving-restricting structures are implemented as thin film or shell-like formations integrated into the display panel structure. This approach provides over-bending protection through a flexible, lightweight structure that adds minimal complexity compared to rigid protective mechanisms, maintaining the flexible nature of the display device.
Solution Approach 2:
The slanted side walls of the curving-restricting structures are designed with specific curvature and angular orientations that optimize their ability to resist over-bending. This geometric design allows the structures to provide mechanical protection through their shaped configuration rather than requiring additional complex active components.
Data Source
AI summary
A flexible display device includes a display panel and a plurality of curving-restricting structures. The display panel has a display surface and a bottom surface opposite thereto. The display surface has a visible region and an outer region surrounding the visible region. The curving-restricting structures is disposed on at least one of the outer region of the display surface and the bottom surface of the display panel. Each curving-restricting structure has a top surface and at least a slanted side wall. The top surfaces of adjacent curving-restricting structures are spaced with each other, and the slanted side walls of adjacent curving-restricting structures face each other. When the flexible display device are curved to a predetermined extent, adjacent curving-restricting structures may resist against with each other to prevent the display panel from being unduly curved to be damaged, and thus a use reliability of the flexible display device is improved.