Polycyclic Compound for OLED Luminous Efficiency
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Solution Overview
Problem
Current organic electroluminescent devices face challenges in achieving high efficiency and long-lasting performance due to suboptimal structural designs and materials in their organic layers.
Innovation Solution
A polycyclic compound represented by specific formulas is introduced for use in organic layers of electroluminescent devices, enhancing the efficiency and longevity of the devices by optimizing the structural and material properties of these layers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional organic layer materials and structures are used, then device fabrication is simpler, but luminous efficiency and device lifetime are insufficient
Solution Approach 1:
The patent employs composite organic layer structures combining multiple materials with complementary properties. Specifically, it uses a combination of hole transport materials (HTM), electron transport materials (ETM), and host materials in layered configurations, where each material contributes specific functions to achieve high luminous efficiency and long device lifetime while managing the complexity through systematic material selection
2Duration of action of stationary object
If conventional organic layer materials are used, then material selection is easier, but device lifetime is short
Solution Approach 1:
The patent applies local quality by assigning specific functional requirements to different organic layers. Each layer (hole injecting, hole transport, electron transport, electron injecting) is optimized with materials having specific properties tailored to their local function, ensuring overall device longevity while maintaining material selection flexibility within each functional category
3Productivity
If conventional organic layer structures are used, then manufacturing is simpler, but luminous efficiency is low
Solution Approach 1:
The patent segments the organic layer into distinct functional sub-layers (hole injecting layer, hole transport layer, electron transport layer, electron injecting layer), where each segment is optimized independently for its specific function. This segmentation enables high luminous efficiency through specialized material selection in each layer while maintaining manufacturing simplicity through standardized deposition processes for each segment
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 polycyclic compound improves the luminous efficiency and extends the lifespan of organic electroluminescent devices, achieving superior performance compared to devices without this compound.
Implementation Method 1
electrons injected from an electron injecting electrode (cathode) recombine with holes injected from a hole injecting electrode (anode) in a light emitting layer to form excitons, which emit light while releasing energy
Data Source
AI summary
The present invention relates to a novel polycyclic compound employed in an organic layer of an organoelectro luminescent device, wherein the organoelectro luminescent device employing the compound according to the present invention has remarkably improved luminous efficiency and a long lifespan. According to the present invention, it is possible to implement a highly efficient and long-life organoelectro luminescent device that can be effectively applied to various display devices.