Fused Polycyclic Light-Emitting Layer Materials for OLED Lifespan
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Solution Overview
Problem
Existing organic electroluminescence elements face challenges in achieving low driving voltage, high luminous efficiency, and long lifespan, necessitating advancements in materials for stable performance.
Innovation Solution
A light emitting element incorporating a fused polycyclic compound represented by specific chemical formulas, enhancing luminous efficiency and element lifespan through improved light emission mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional organic electroluminescence materials are used, then the device can achieve basic light emission, but the luminous efficiency and lifespan remain insufficient
Solution Approach 1:
The patent modifies the molecular structure parameters of organic electroluminescence materials by introducing specific fused polycyclic frameworks (triphenylene, pyrene, dibenzofuran, dibenzothiophene units) and adjusting substituent groups to optimize both luminous efficiency and lifespan simultaneously
Solution Approach 2:
The invention creates composite organic electroluminescence materials by combining multiple fused polycyclic units (triphenylene, pyrene, dibenzofuran, dibenzothiophene) with various substituent groups (amine, oxy, thio, alkyl, aryl, heteroaryl) to achieve synergistic effects that improve both luminous efficiency and element lifespan
2Productivity
If high luminous efficiency is pursued through advanced materials, then light emission performance improves, but material stability and lifespan may be compromised
Solution Approach 1:
The patent applies local quality by introducing specific functional groups (amine, oxy, thio) at particular positions on the fused polycyclic framework to enhance local electronic properties and stability without compromising overall luminous efficiency
Solution Approach 2:
The invention optimizes material stability by carefully controlling the number and type of substituent groups (R1-R6) and their positions on the fused polycyclic core structure, balancing reactivity for high luminous efficiency with stability for long lifespan
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 fused polycyclic compound improves luminous efficiency and extends the lifespan of the light emitting element, resulting in enhanced display quality.
Implementation Method 1
An organic electroluminescence display device is different from a liquid crystal display device and the like in that it is a so-called self-luminescent display device in which holes and electrons respectively injected from a first electrode and a second electrode recombine in a light emitting layer, so that a light emitting material including an organic compound in the light emitting layer emits light
Data Source
AI summary
Embodiments provide a fused polycyclic compound, a light emitting element that includes the fused polycyclic compound, and an electronic apparatus that includes the light emitting element. The light emitting element includes a first electrode, a second electrode disposed on the first electrode, and a light emitting layer disposed between the first electrode and the second electrode, wherein the light emitting layer includes the fused polycyclic compound. The fused polycyclic compound is represented by Formula 1, which is explained in the specification.