OLED Organic Compound Structure for Low-Voltage Long-Life Devices
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Solution Overview
Problem
There is a need for new materials in organic light emitting devices to enhance efficiency, reduce driving voltage, and improve lifetime characteristics.
Innovation Solution
A novel compound of Chemical Formula 1 is introduced, which can be used in various organic material layers such as hole injection, hole transport, light emitting, electron transport, or electron injection layers, improving the performance of organic light emitting devices by optimizing their structure and functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional organic materials are used in organic light emitting devices, then the device structure is simple and easy to manufacture, but the efficiency is low, driving voltage is high, and lifetime is short
Solution Approach 1:
The patent applies parameter changes by modifying the molecular structure of organic materials through chemical composition optimization. Specific structural parameters (aromatic rings, heteroatoms, substituent groups) are adjusted to change electronic properties, resulting in materials with improved efficiency and reduced driving voltage without compromising manufacturability
Solution Approach 2:
The patent employs composite materials by combining multiple organic compounds with complementary properties into layered device structures. Different organic materials are selected for specific functions (hole injection, electron transport, light emission) to achieve synergistic effects that improve overall device performance while maintaining reasonable manufacturing complexity
2Duration of action of moving object
If traditional organic materials are used in organic light emitting devices, then the device structure is simple and easy to manufacture, but the lifetime characteristics are poor
Solution Approach 1:
The patent uses parameter changes by optimizing chemical structure parameters such as molecular weight, aromatic ring count, and heteroatom composition to enhance material stability and device lifetime. These structural modifications are designed to improve durability while controlling the increase in synthesis complexity
Solution Approach 2:
The patent addresses lifetime issues by developing organic materials that can be deposited in thin layers through solution processing, enabling replacement and regeneration of organic layers without requiring complex device disassembly, thus effectively managing device lifetime through modular material replacement
3Reliability
If new organic compounds are developed to improve efficiency and lifetime, then device performance is enhanced, but the complexity of material synthesis and device structure increases
Solution Approach 1:
The patent applies universality by designing organic compounds with multiple functional groups that can perform different functions (hole transport, electron transport, light emission) within the same material or layer. This multi-functionality reduces the number of separate material layers needed, thereby improving reliability without proportionally increasing overall device complexity
Solution Approach 2:
The patent uses local quality by assigning specific functional properties to specific regions or layers of the organic material structure. Different segments of the organic compound or different organic layers are optimized for specific functions (e.g., hole injection at the anode interface, light emission in the middle layer), allowing targeted improvement of device stability without requiring complete redesign of the entire material system
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 enhances the efficiency and stability of organic light emitting devices, achieving low driving voltage and extended lifetime, as demonstrated in experimental examples compared to traditional materials.
Implementation Method 1
The organic light emitting phenomenon refers to a phenomenon where electric energy is converted into light energy by using an organic material
Data Source
AI summary
Provided is a compound of Chemical Formula 1:wherein:L is a single bond, a substituted or unsubstituted C6-60 arylene, or a substituted or unsubstituted C2-60 heteroarylene containing at least one selected from the group consisting of N, O and S, andAr is a substituted or unsubstituted C2-60 heteroaryl containing at least one selected from the group consisting of N, O and S,and to an organic light emitting device comprising the same.