Wavy Display Wiring Structure for Bend-Resistant Conductive Traces
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Solution Overview
Problem
Flexible display devices face failure due to broken metal traces when bent, as organic materials used as substitutes have lower conductivity and are prone to fracture under strain.
Innovation Solution
A wiring structure with wavy sides and conductive elements having protruding portions of varying curvature degrees and lengths, along with hollow patterns, is designed to distribute strain and prevent fractures by ensuring that connection lines between strain concentration points are not parallel to the bending line, maintaining connectivity and conductivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If metal traces are used in flexible display devices, then conductivity is high, but the traces break when bent
Solution Approach 1:
The patent applies curvature by designing wavy patterns on both sides of the conductive element. The first side has a first wavy pattern and the second side has a second wavy pattern, creating a three-dimensional undulating structure that allows the trace to flex and deform during bending without breaking, thereby improving fracture resistance while maintaining conductivity
Solution Approach 2:
The patent transitions from a flat two-dimensional trace to a three-dimensional structure by adding wavy patterns on both sides. This dimensional change creates additional space for deformation during bending, allowing the conductive element to accommodate strain without fracture while maintaining its electrical connection
2Adaptability or versatility
If organic materials are used to replace metal traces, then flexibility is improved, but conductivity decreases
Solution Approach 1:
The patent employs a composite structure consisting of an organic flexible substrate combined with a conductive element that has wavy patterns on both sides. This composite design leverages the flexibility of organic materials while maintaining high conductivity through the metal or conductive polymer trace, resolving the trade-off between flexibility and conductivity
Data Source
AI summary
The present disclosure provides a wiring structure, a display substrate and a display device, and belongs to the field of display technology. The wiring structure of the present disclosure comprises a body portion provided with hollow patterns; the body portion has a first side and a second side which are provided opposite to each other along an extending direction of the wiring structure, and both the first and second sides are wavy; the body portion comprises a plurality of conductive elements sequentially connected along the extending direction of the wiring structure; and in each conductive element, a length of a protruding portion on the first side in the extending direction of the wiring structure is different from that of a protruding portion on the second side in the extending direction of the wiring structure.