OLED Conductive Wire Laminated Structure for Voltage Drop Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Organic light emitting display devices experience voltage drops and non-uniform image quality due to resistance in conductive wires, and the adhesive force of sealing agents is affected by the configuration of conductive wires, leading to reliability issues.
Innovation Solution
The implementation of a laminated structure for conductive wires with multiple conductive layers and uniformly distributed contact holes to reduce resistance and improve adhesive force, preventing antenna effects and ensuring uniform image quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conductive wires are used to supply power and drive signals, then power transmission and signal transmission are enabled, but voltage drop occurs due to resistance leading to non-uniform image quality
Solution Approach 1:
The patent transitions from a single-layer conductive wire to a multi-layer laminated structure, adding the vertical dimension to reduce resistance. By stacking multiple conductive layers (first conductive layer, second conductive layer, third conductive layer) with insulating layers in between, the current has multiple parallel paths, effectively reducing overall resistance and voltage drop while maintaining uniform power distribution across the display panel.
Solution Approach 2:
The patent employs composite material structure by combining multiple conductive layers with different materials and properties. Each conductive layer may have different material compositions, and they are combined with insulating layers to create a composite laminated structure that optimizes both electrical conductivity and mechanical properties, thereby reducing voltage drop while ensuring reliable power transmission.
2Area of stationary object
If conductive wires are disposed to overlap with sealing agent, then dead space is reduced, but adhesive force of sealing agent becomes non-uniform
Solution Approach 1:
The patent resolves the adhesive force uniformity issue by moving the conductive wire structure to a multi-layer vertical configuration. The laminated structure with insulating layers between conductive layers prevents direct contact between the sealing agent and conductive materials, ensuring uniform adhesive force across the sealing agent while still achieving space efficiency through the compact vertical stacking of layers.
Solution Approach 2:
The insulating layers serve as intermediary elements between the conductive layers and the sealing agent. These insulating layers prevent direct interaction between the sealing agent and conductive materials, ensuring that the sealing agent maintains uniform adhesive properties across all surfaces it contacts, while still allowing the conductive layers to be positioned in a space-efficient overlapping configuration.
3Loss of energy
If single-layer conductive wire is used, then device complexity is low, but resistance is high causing voltage drop
Solution Approach 1:
The patent reduces resistance by transitioning from a single-layer to a multi-layer laminated structure. By stacking multiple conductive layers vertically with insulating layers in between, the current flows through multiple parallel paths, effectively reducing overall resistance and energy loss without requiring significant horizontal space expansion.
Solution Approach 2:
The patent combines multiple conductive layers and insulating layers into a single integrated laminated structure. This merging of multiple layers creates a unified conductive system that functions as a cohesive unit, reducing overall resistance while maintaining manageable device complexity through systematic integration of the layers.
Data Source
AI summary
An organic light emitting display device. The organic light emitting display device includes a first substrate, a second substrate overlapping with at least one region of the first substrate and a sealing agent attached between the first substrate and the second substrate to seal a display unit therebetween. A conductive wire on the first substrate overlapping with at least a portion of the sealing agent includes a first conductive layer and a second conductive layer having at least one region formed at different levels to be electrically coupled to each other through contact holes. The first conductive layer and the second conductive layer are configured to reduce a resistance of the conductive wire and improve an adhesive force of the sealing agent.