Conductive Layer Composition for Organic EL Devices
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Solution Overview
Problem
Conventional methods for manufacturing organic electroluminescent devices face issues with the deterioration of light emitting efficiency and color purity due to mutual dissolution between organic layers, which affects the reliability of the devices.
Innovation Solution
A composition for conductive materials is developed, comprising compounds represented by specific formulas that allow for high carrier transport ability, including a polymerization reaction with epoxy-based cross-linking agents to maintain suitable intervals between main skeletons, reducing interaction and enhancing hole transport ability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If organic layers are laminated using conventional application methods, then the device structure is formed, but mutual dissolution occurs between adjacent organic layers causing deterioration in light emitting efficiency and color purity
Solution Approach 1:
The patent applies preliminary action by introducing a solvent resistance improving layer between organic layers before lamination. This layer is formed with a solvent resistance improving agent that prevents mutual dissolution when solvents from upper layers contact lower layers, thereby maintaining pattern precision while preventing deterioration of light emitting efficiency and color purity
Solution Approach 2:
The solvent resistance improving layer acts as an intermediary between adjacent organic layers. It mediates the interaction by blocking solvent penetration from upper layers to lower layers, preventing mutual dissolution while allowing the device structure to be properly formed
2Stability of the object's composition
If different solubility organic materials are used for lamination, then mutual dissolution is prevented, but the solvent resistance of lower organic layers remains insufficient
Solution Approach 1:
The patent changes the parameter of solvent resistance by introducing a solvent resistance improving agent with specific molecular weight (1,000-1,000,000) and functional groups. This agent modifies the chemical properties of the lower organic layer to enhance its resistance against solvents from upper layers, improving both composition stability and durability
Solution Approach 2:
The patent creates a composite structure by combining the lower organic layer with a solvent resistance improving layer. This composite material approach integrates materials with different properties - the original organic material provides functional characteristics while the improving agent provides enhanced solvent resistance and durability
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 results in a conductive layer with improved carrier transport ability, leading to increased reliability and efficiency of organic electroluminescent devices by preventing mutual dissolution and maintaining chemical resistance.
Implementation Method 1
a polymerization reaction with epoxy-based cross-linking agents to maintain suitable intervals between main skeletons
Data Source
AI summary
A composition for conductive materials comprises a compound represented by the following general formula (A1):wherein:R1 is the same or different and each independently represents a C2-C8 straight-chain alkyl group;R2 is the same or different and each independently represents a hydrogen atom, a methyl group or an ethyl group;Y represents a group containing at least one substituted or unsubstituted aromatic hydrocarbon ring, or substituted or unsubstituted heterocyle; andX1 is the same or different and each represents a substituent represented by the following general formula (A2):wherein n1 is an integer of from 2 to 8.