Fused Polycyclic Compound for OLED Luminous Efficiency
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing organic electroluminescence (OEL) elements face challenges in achieving low driving voltage, high luminous efficiency, and long service life, which are essential for advanced display devices.
Innovation Solution
A light emitting element is developed, incorporating a fused polycyclic compound represented by specific formulas, which is used in the emission layer to enhance luminous efficiency and service life. This compound is designed to improve the performance of the light emitting element by optimizing its chemical structure and molecular interactions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional organic electroluminescence materials are used, then the device can operate, but luminous efficiency and service life are insufficient
Solution Approach 1:
The patent changes the chemical structure parameters of the organic compound by introducing a specific fused polycyclic core structure with controlled substitution patterns. This structural parameter change optimizes both the luminous efficiency and service life by improving charge transport properties and enhancing material stability without requiring a complete material system redesign
Solution Approach 2:
The invention uses a composite molecular structure combining a fused polycyclic core with specific substituent groups (aromatic rings, heteroatoms, and functional groups). This composite approach creates a material that simultaneously achieves high luminous efficiency through optimized electronic structure and extended service life through enhanced chemical stability and reduced degradation pathways
2Use of energy by moving object
If driving voltage is reduced for energy efficiency, then power consumption decreases, but maintaining high luminous efficiency and service life becomes difficult
Solution Approach 1:
The patent optimizes the energy level parameters of the organic compound by adjusting the HOMO-LUMO gap through controlled molecular structure modification. This enables the material to operate at lower driving voltages while maintaining high luminous efficiency by improving charge injection and transport characteristics without sacrificing light emission performance
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 use of the fused polycyclic compound in the light emitting element significantly improves luminous efficiency and extends the service life, leading to enhanced display quality and performance.
Implementation Method 1
fluorescence emission using triplet-triplet annihilation (TTA) in which singlet excitons are generated by the collision of triplet excitons
Implementation Method 2
an organic electroluminescence element having a low driving voltage, high luminous efficiency, and a long service life
Data Source
AI summary
Embodiments provide a fused polycyclic compound and a light emitting element. The light emitting element includes a first electrode, a second electrode disposed on the first electrode, and an emission layer disposed between the first electrode and the second electrode and including the fused polycyclic compound. The fused polycyclic compound is represented by Formula 1, which is explained in the specification: