Flexible Array Substrate with Elastic Conductive Pillars
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Flexible AMOLED display panels face difficulties in stretchability and bendability due to breakage of insulating layers and gate lines when stretched or bent, leading to undesirable line breakage.
Innovation Solution
A flexible array substrate is designed with pixel island regions and flexible regions, featuring elastic layers and conductive pillars connecting wires, which are connected to gate electrodes, allowing for effective stress resistance and dual fail-safe connectivity, ensuring no breakage upon bending.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If rigid insulating layers and gate lines are used in conventional display panels, then electrical connectivity is ensured, but the panels cannot be stretched or bent without causing line breakage
Solution Approach 1:
The array substrate is divided into pixel island regions and flexible regions. The flexible regions are positioned between adjacent pixel island regions and contain only elastic layers and connecting wires without rigid insulating layers or gate lines, allowing these segments to stretch and bend independently without causing line breakage throughout the entire panel.
Solution Approach 2:
Different regions of the substrate are given different properties: pixel island regions maintain rigid electrical structures for stable signal transmission, while flexible regions use elastic materials and simplified structures to enable stretching and bending. This local differentiation allows the panel to have both electrical reliability and mechanical flexibility.
2Adaptability or versatility
If elastic layers and connecting wires are introduced to enable flexibility, then stretchability is improved, but structural complexity increases
Solution Approach 1:
Rigid insulating layers and gate lines are extracted from the flexible regions, leaving only the essential elastic layers and connecting wires. This removal of unnecessary rigid structures simplifies the flexible region design while maintaining the required electrical connectivity and mechanical flexibility.
Solution Approach 2:
The flexible regions incorporate elastic layers that can dynamically deform during stretching and bending operations. The connecting wires are designed with flexible configurations that adapt to mechanical deformation, allowing the structure to maintain electrical connectivity while accommodating dynamic mechanical changes.
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 stretchability and bendability of the flexible array substrate, preventing connecting wire breakage and maintaining normal display functionality even when bent, with excellent stretching properties in both horizontal and vertical directions.
Implementation Method 1
the flexible region comprises a first connecting wire, an elastic layer disposed on the first connecting wire, and a second connecting wire disposed on the elastic layer
Data Source
AI summary
Disclosed are a flexible array substrate, a preparation method thereof, and a flexible display panel. The flexible array substrate comprises a plurality of pixel island regions sequentially arranged, with a flexible region being disposed between adjacent pixel island regions, wherein each of the pixel island regions comprises a gate electrode, and the flexible region comprises a first connecting wire, an elastic layer disposed on the first connecting wire, and a second connecting wire disposed on the elastic layer, wherein a plurality of interlayer via holes are disposed in the elastic layer, an elastic conductive pillar is disposed in each of the interlayer via holes, the elastic conductive pillar is conductively connected to the first connecting wire and the second connecting wire respectively, and the first connecting wire and/or the second connecting wire are/is connected to the gate electrodes of adjacent pixel island regions.