Organic Compound for OLED Hole Injection Layer
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Solution Overview
Problem
Current organic electric elements face challenges with short lifespan and instability due to metal oxide penetration and Joule heat, requiring materials with high glass transition temperature and efficient deposition methods, but stable and efficient organic material layers for these elements have not been fully developed.
Innovation Solution
Development of specific compounds represented by Formula 1, which are used in the organic material layers of organic electric elements to enhance luminous efficiency, reduce driving voltage, and improve color purity and lifespan, and are fabricated using various deposition methods such as PVD or soluble processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional hole injection layer materials are used, then the element can be manufactured, but metal oxides penetrate from the anode into the organic layer causing shortened life span
Solution Approach 1:
The patent introduces a hole injection layer material comprising a specific compound (Formula 1) that acts as an intermediary barrier between the ITO anode and the organic layer. This material prevents metal oxide penetration while maintaining hole injection functionality, thereby extending element life span without compromising performance.
Solution Approach 2:
The invention uses a composite material approach by combining the specific compound (Formula 1) with auxiliary compounds to create a hole injection layer material that exhibits both high heat resistance and effective barrier properties against metal oxide penetration, resolving the contradiction between reliability and harmful factor resistance.
2Stability of the object's composition
If materials with low glass transition temperature are used, then the element can operate, but the uniformity of thin film surface collapses during operation
Solution Approach 1:
The patent changes the key parameter of glass transition temperature by selecting a compound (Formula 1) with specifically high glass transition temperature properties. This parameter change ensures that the thin film surface maintains its uniformity during operation by preventing material softening and degradation at operating temperatures.
3Use of energy by moving object
If conventional materials are used, then the element can function, but luminous efficiency is not high and driving voltage is high
Solution Approach 1:
The invention changes multiple parameters simultaneously by selecting a compound (Formula 1) with optimized molecular structure that provides both high luminous efficiency and low driving voltage characteristics. The specific chemical structure enables better charge transport and lower energy barriers, improving overall energy efficiency.
4Reliability
If materials without sufficient heat resistance are used, then the element can be manufactured, but the element cannot withstand Joule heat during operation
Solution Approach 1:
The patent addresses heat resistance by selecting a compound (Formula 1) with high glass transition temperature and thermal stability parameters. This ensures the material can withstand Joule heat generated during operation without degrading, maintaining reliability under thermal stress.
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 compounds significantly improve the luminous efficiency, reduce driving voltage, and extend the lifespan of organic electric elements while maintaining high heat resistance and color purity, outperforming comparative compounds in OLED performance.
Implementation Method 1
An organic light emitting phenomenon refers to a phenomenon in which electric energy is converted into light energy of an organic material
Implementation Method 2
deposition is a main method of forming an OLED
Data Source
AI summary
The present invention provides a novel compound capable of improving light emitting efficiency, stability, and lifespan of the element, an organic element using the same, and an electric device for the same.