Flexible Display Substrate Wire Segments for Crack Resistance
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Solution Overview
Problem
Flexible display panels with narrow edge frames face issues of cracking and breakage due to bending stress in the edge areas, leading to display failures, as the existing technologies are inadequate in managing stress distribution effectively.
Innovation Solution
A flexible display substrate with traveling wires composed of sequentially connected wire segments inclined at a preset angle and featuring hole structures and planar contact points, which decentralizes bending stress and provides multiple connection points to prevent cracking, allowing for effective stress distribution and increased resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If pad bending is applied to narrow the edge frame, then the edge frame width is reduced, but the traveling wires are prone to cracking and breakage due to bending stress
Solution Approach 1:
The traveling wire is divided into multiple wire segments that are sequentially connected and inclined at a preset angle relative to the wire extension direction. This segmentation allows the bending stress to be distributed across multiple segments rather than concentrated in a single continuous wire, thereby preventing cracking while enabling edge frame narrowing through pad bending.
Solution Approach 2:
Hole structures are introduced at specific locations within the wire segments, creating local variations in the wire structure. These hole structures serve as stress relief points that further distribute and reduce bending stress concentration, enhancing the wire's resistance to cracking in the bent edge frame area.
2Strength
If wire segments are inclined at a preset angle to distribute stress, then bending stress resistance is improved, but the wire structure becomes more complex
Solution Approach 1:
The wire is segmented into multiple inclined sections rather than maintaining a single straight configuration. Each segment is inclined at a preset angle relative to the overall wire extension direction, creating a stepped or zigzag pattern that distributes bending stress while maintaining a relatively simple manufacturing process.
Solution Approach 2:
Hole structures are incorporated into the wire segments to create a porous or perforated wire structure. These holes reduce the overall material usage and simplify the wire cross-section while providing stress concentration points that enhance bending resistance without significantly increasing structural complexity.
Data Source
AI summary
Disclosed are a flexible display substrate, a display panel, and a display device. A traveling wire in a fixed bending area includes a plurality of sequentially connected wire segments at a preset inclination angle relative to the extension direction of the traveling wire, and furthermore hole structures are arranged on at least a part of the wire segments. Moreover there is a planar contact structure between at least two of wire segments connected with each other.