Display Panel Edge Conductor Openings Against Peeling
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing display panels face reliability issues due to peeling phenomena at the edges of conductive portions, which can lead to moisture penetration and corrosion, affecting the longevity and performance of the display device.
Innovation Solution
The display panel design includes conductive portions with defined openings and an organic layer extending to the edge, which helps prevent peeling by reducing the likelihood of moisture ingress and enhancing structural integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the conductive portion extends to the edge of the base substrate, then the electrical connection is improved, but the peeling phenomenon occurs and reliability deteriorates
Solution Approach 1:
The conductive portion is segmented by forming openings (through-holes) within it, dividing the continuous conductive structure into separated regions. This segmentation reduces stress concentration and prevents peeling propagation at the edges while maintaining electrical connectivity through the openings.
Solution Approach 2:
The conductive portion is designed with a porous structure containing multiple openings, which reduces the overall stress on the conductive portion and prevents moisture accumulation that would cause corrosion. The porous design allows stress distribution and reduces the peeling phenomenon at edges.
2Reliability
If the conductive portion is made continuous to ensure electrical connection, then conductivity is improved, but moisture penetration and corrosion risk increase
Solution Approach 1:
The continuous conductive portion is divided into segmented regions by openings, reducing the continuous surface area exposed to moisture while maintaining electrical connectivity through the conductive paths around and between the openings.
Solution Approach 2:
The conductive portion incorporates a porous structure with openings that reduce moisture accumulation and penetration risk. The porous design allows the conductive material to maintain connectivity while reducing the total exposed surface area to environmental moisture.
3Reliability
If the conductive portion is removed at the edge to prevent peeling, then reliability is improved, but electrical connection may be compromised
Solution Approach 1:
Instead of removing the conductive portion at the edge to prevent peeling, the invention inverts the approach by extending the conductive portion to the edge but incorporating openings within it. This inversion allows the conductive material to reach the edge for connection while the openings prevent peeling through stress reduction and moisture exclusion.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A display panel includes a base substrate, pixels, signal lines, a power line, signal pads, power pads, and a conductive portion electrically connected to the power pads and extending from an area overlapping the power pads to an edge of the base substrate. An opening is defined in conductive portion by a removed portion thereof.