Flexible OLED Auxiliary Conducting Layer Resistance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In large-scale OLED displays, the thin second electrode exhibits higher resistance and weaker conductivity, leading to uneven voltages across pixels, which affects display homogeneity and can result in 'mura' issues.
Innovation Solution
A flexible OLED design incorporating an auxiliary conducting layer made of conductive silver glue, silver nanowire, or graphene, which covers the second electrode to reduce its resistance and enhance conductivity, while also reducing its thickness and material usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of substance
If the second electrode is made thinner to save material and reduce weight, then material consumption and weight are reduced, but resistance increases and conductivity decreases
Solution Approach 1:
The patent applies composite materials by combining the second electrode with an auxiliary conducting layer made of transparent conductive oxide (TCO) material. This composite structure integrates two different materials with complementary properties: the thin second electrode saves material while the TCO auxiliary layer compensates for the reduced conductivity, achieving both material savings and maintained electrical performance
Solution Approach 2:
The patent changes the electrical parameters of the system by introducing the auxiliary conducting layer with specific sheet resistance (0.1-100Ω/□) and thickness (10-1000 Å). This parameter adjustment allows the thin second electrode to achieve the required conductivity levels without increasing material consumption, effectively resolving the contradiction between thickness reduction and conductivity maintenance
2Weight of moving object
If the second electrode is made thinner to reduce weight, then weight is reduced, but resistance increases and conductivity decreases
Solution Approach 1:
The patent uses composite materials by combining the lightweight thin second electrode with the TCO auxiliary conducting layer. The composite structure maintains the weight advantage of the thin electrode while the auxiliary layer provides the necessary electrical conductivity, resolving the contradiction between weight reduction and conductivity maintenance
Solution Approach 2:
The patent adjusts electrical parameters by adding the auxiliary layer with controlled sheet resistance and thickness, enabling the thin electrode to achieve required conductivity levels without compromising the weight reduction benefit
3Loss of substance
If the second electrode is made thinner, then material consumption is reduced, but voltage distribution becomes uneven across pixels
Solution Approach 1:
The patent applies composite materials where the TCO auxiliary conducting layer is deposited over the thin second electrode. This composite structure ensures uniform voltage distribution across all pixels by providing additional conductive pathways, compensating for the insufficient conductivity of the thin electrode while maintaining material savings
Solution Approach 2:
The patent changes the electrical parameters by introducing the auxiliary layer with specific sheet resistance (0.1-100Ω/□) and thickness (10-1000 Å), which improves voltage distribution uniformity across the display while allowing the second electrode to be thinner and consume less material
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 auxiliary conducting layer decreases the second electrode's resistance to 0.1-100Ω/□ and thickness to 10-1000 Å, ensuring even voltage distribution across pixels, improving display homogeneity and reducing material consumption.
Implementation Method 1
an auxiliary conducting layer covering the second electrode... capable of decreasing the resistance of the second electrode and increasing the conducting ability
Data Source
AI summary
The present invention provides a flexible OLED and a manufacture method thereof. The flexible OLED is capable of decreasing the resistance of the second electrode (12) and increasing the conducting ability to even the voltages of respective pixels, to improve the display homogeneity, and meanwhile, capable of reducing the thickness of the second electrode (12) and saving the material of the second electrode (12) by covering the auxiliary conducting layer (13) on the second electrode (12). The manufacture method of the flexible OLED is capable of decreasing the resistance of the second electrode (12) and increasing the conducting ability to even the voltages of respective pixels, to improve the display homogeneity, and meanwhile, capable of reducing the thickness of the second electrode (12) and saving the material of the second electrode (12) by forming the auxiliary conducting layer (13) on the second electrode (12) to cover the second electrode (12).