Nitrogen Polycyclic Compound for OLED Drive Voltage Reduction
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Solution Overview
Problem
There is a continuous need for new materials in organic light emitting devices to improve efficiency and service life, as existing materials face challenges in achieving low driving voltage and stability.
Innovation Solution
A multicyclic compound including nitrogen is developed, which can be used in various layers of an organic light emitting device, such as hole injection, transport, emission, transport, and injection layers, enhancing the device's performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If conventional electroluminescent materials are used, then device structure can be simple, but luminance is insufficient and viewing angle is narrow
Solution Approach 1:
The patent employs composite electroluminescent materials comprising multiple components (e.g., host material, dopant, and auxiliary materials) to achieve both high luminance and wide viewing angle. The composite structure allows synergistic effects where each component contributes specific properties, resolving the contradiction between performance enhancement and structural simplicity.
Solution Approach 2:
The electroluminescent composition is designed to perform multiple functions simultaneously: generating high luminance, providing wide viewing angle, and maintaining operational stability. This multi-functionality is achieved through carefully selected material combinations that address multiple performance requirements within a single material system.
2Manufacturing precision
If conventional electroluminescent materials are used, then manufacturing process can be simple, but emission color is not pure and color gamut is narrow
Solution Approach 1:
The patent applies local quality by optimizing specific material properties at the molecular level within the electroluminescent composition. By selecting host and dopant materials with specific electronic structures and energy levels, the invention achieves pure emission colors and wide color gamut while maintaining compatibility with existing manufacturing processes.
3Power
If conventional electroluminescent materials are used, then device structure can be simple, but drive voltage is high and power consumption is high
Solution Approach 1:
The patent utilizes parameter changes by adjusting the energy levels, HOMO-LUMO gaps, and molecular structures of the electroluminescent materials to optimize charge transport and recombination efficiency. These parameter optimizations enable lower drive voltages and reduced power consumption while maintaining device structural simplicity.
4Speed
If conventional electroluminescent materials are used, then device structure can be simple, but response speed is slow and response time is long
Solution Approach 1:
The patent applies dynamics by designing electroluminescent materials with optimized charge carrier mobility and rapid recombination kinetics. The dynamic properties of the materials are tuned to enable fast response speeds and short response times, achieving high-speed performance without increasing device structural complexity.
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 compound improves the efficiency and service life of organic light emitting devices by reducing driving voltage and enhancing the performance of these layers.
Implementation Method 1
nitrogen-containing polycyclic compound and organic light emitting element using same
Data Source
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AI summary
The present specification provides a multicyclic compound including nitrogen and an organic light emitting device using the same.