Detachable Flexible Display Arch Reducing Trace Stress
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Solution Overview
Problem
Existing display screens face issues with peripheral metal traces breaking during bending, leading to reduced reliability and functionality.
Innovation Solution
A detachable flexible display structure with a support substrate featuring a rib in the non-active area, allowing the flexible display screen to be bent at an arch portion, reducing stress and preventing peripheral metal trace breakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If the non-active area is bent to achieve a narrow frame, then the frame width is reduced, but the peripheral metal traces are prone to breakage
Solution Approach 1:
The patent introduces an arch portion with a specific radius of curvature in the non-active area of the flexible display screen. This curved structure allows the screen to bend smoothly while distributing stress away from the peripheral metal traces, preventing breakage during the bending process required to achieve narrow frame widths.
Solution Approach 2:
The arch portion is pre-formed in the flexible display screen before the bending operation. This preliminary curvature preparation ensures that when the screen is bent to reduce frame width, the stress is already distributed along the arch structure, preventing metal trace breakage before it occurs.
2Adaptability or versatility
If the flexible display screen is made bendable, then the frame can be narrowed, but stress concentration causes metal trace breakage
Solution Approach 1:
The arch portion with optimized radius of curvature transforms the bending stress distribution, converting concentration points into distributed stress along the curved path. This maintains metal trace strength while enabling bending capability for frame narrowing.
Solution Approach 2:
The patent modifies the geometric parameters of the non-active area by introducing an arch portion with specific radius of curvature. This parameter change enables the flexible display screen to achieve bending capability while maintaining metal trace strength through proper stress distribution.
3Reliability
If the support substrate is detached from the flexible display screen, then stress during bending is reduced, but the manufacturing process becomes more complex
Solution Approach 1:
The patent separates the support substrate from the flexible display screen, allowing independent optimization of each component. The arch portion is formed on the flexible display screen while the support substrate can be separately manufactured and then attached, simplifying the overall manufacturing process despite the additional detachment step.
Solution Approach 2:
The arch portion is pre-formed on the flexible display screen before attachment to the support substrate. This preliminary formation of the arch structure allows stress reduction during bending to be achieved without requiring complex real-time adjustments during the manufacturing process.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution enhances the reliability of flexible displays by minimizing stress on peripheral metal traces during bending, thereby preventing breakage and improving overall display performance.
Implementation Method 1
the arch portion has a tendency of automatic bending, the stress generated when the flexible display screen is bent can be reduced
Data Source
AI summary
The present disclosure relates to a detachable flexible display structure, a flexible display screen, a method of manufacturing the same, and a display device. The detachable flexible display structure, having an active area and a non-active area arranged on outside of the active area, includes: a support substrate having a surface in the non-active area provided with a rib; and a flexible display screen formed on the support substrate and detachable from the support substrate. The flexible display screen is formed with an arch portion for covering the rib at a position corresponding to the rib so that the flexible display screen can be bent at the arch portion. The above detachable flexible display structure can reduce the stress generated at the arch portion when the flexible display screen is bent, so that it can prevent the peripheral metal trace from breaking, which improves the reliability of the flexible display.