Flexible Display Crack Stopping Component Design
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Flexible display substrates prone to cracking during cutting or bending, allowing water and oxygen to enter the display area and reduce the service life of OLED devices.
Innovation Solution
Incorporation of a crack stopping component on the insulation layer in the non-display area, comprising multiple stopper groups with stoppers distributed along the circumferential direction of the display area, designed to prevent cracks from extending to the display area, enhancing bending resistance and structural strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the flexible display substrate is subjected to cutting process or bending during use, then the substrate can be processed and used, but cracks are easily produced in the edge of the flexible display substrate due to stress concentration
Solution Approach 1:
The patent introduces a crack stopping component that segments the continuous non-display area into multiple regions. This component acts as a barrier to prevent stress concentration from propagating cracks across the entire substrate, thereby resolving the contradiction between ease of cutting and crack resistance.
Solution Approach 2:
The crack stopping component serves as an intermediary element between the display area and the external environment. It intercepts and stops cracks before they can reach the display area, allowing the substrate to be cut and bent while protecting the critical display region from crack propagation.
2Strength
If cracks extend to the display area, then the structural integrity is compromised, but water and oxygen may enter the display area through the cracks
Solution Approach 1:
The crack stopping component is pre-positioned in the non-display area before any cracking can occur. This preliminary protective structure ensures that even if cracks form due to bending or cutting, they will be stopped by the component and cannot reach the display area, thereby preserving both structural integrity and preventing moisture ingress that would reduce service life.
3Reliability
If the crack stopping component is added to prevent crack propagation, then the service life is extended, but the device complexity increases
Solution Approach 1:
The crack stopping component is strategically placed only in the non-display area where cracks are most likely to form and propagate. This localized approach provides maximum protection to the critical display area while minimizing the addition of structural complexity to the overall device.
Data Source
AI summary
A flexible display substrate includes a flexible substrate and an insulation layer on the flexible substrate. The flexible substrate includes a display area and a non-display area surrounding the display area. A crack stopping component is on the insulation layer in the non-display area, and configured to stop a crack in the non-display area from extending to the display area.