Flexible Display Substrate With Varying Conductive Layer Thickness
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Solution Overview
Problem
The bending property of existing flexible display substrates is compromised when the thickness of the conductive layer is increased, making them unsuitable for large screen foldable display devices.
Innovation Solution
A flexible display substrate with a conductive layer that has a smaller thickness in the bending area compared to the non-bending area, allowing for reduced resistance and improved current flow without affecting the bending properties, achieved by varying the edge configurations and thickness ranges of the conductive layer in the bending and non-bending areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the thickness of the conductive layer is increased, then the resistance is reduced and current flow is improved, but the bending property deteriorates
Solution Approach 1:
The conductive layer is designed with different thicknesses in different regions: a first thickness in the bending area and a second thickness in the non-bending area. This local differentiation allows the bending area to maintain flexibility while the non-bending area provides sufficient electrical conductivity, resolving the contradiction between bending property and electrical conductivity.
2Reliability
If the thickness of the conductive layer is increased to reduce resistance, then electrical conductivity is improved, but the flexible display substrate becomes less suitable for foldable devices
Solution Approach 1:
The conductive layer implements spatially varying thickness to simultaneously satisfy electrical conductivity requirements and foldable device adaptability. The thinner bending area ensures flexibility for folding operations, while the thicker non-bending area maintains adequate current flow and reduces resistance, enabling the substrate to function properly in foldable display devices.
Data Source
AI summary
A flexible display substrate includes a flexible substrate and a conductive layer on the flexible substrate. The conductive layer and the flexible substrate are divided into a bending area and a non-bending area along an extension direction. A thickness of the conductive layer in the bending area is smaller than a thickness of the conductive layer in the non-bending area.