Organic electroluminescent compound and organic electroluminescent device comprising the same
By using organic electroluminescent compounds with specific structures as light-emitting and electronic layer materials, the problems of high driving voltage, low luminous efficiency, and short lifespan in existing organic electroluminescent devices have been solved, realizing an organic electroluminescent device with low driving voltage, high efficiency, and long lifespan.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- DUPONT SPECIALTY MATERIALS KOREA LTD
- Filing Date
- 2020-02-20
- Publication Date
- 2026-06-12
AI Technical Summary
Existing organic electroluminescent devices have shortcomings in terms of driving voltage, luminous efficiency and lifespan. In particular, the phosphorescent host material is prone to degradation and has low power efficiency during high-temperature deposition, resulting in a short device lifespan.
Organic electroluminescent compounds represented by Formula 1 are used as light-emitting layers, electron transport layers, or electron buffer layers, including compounds with specific aryl or heteroaryl structures bonded to the core structure, to improve the thermal stability and luminescence performance of the materials.
This achieves low driving voltage, high luminous efficiency, and excellent lifetime characteristics, thus improving the overall performance of organic electroluminescent devices.
Smart Images
Figure QLYQS_1 
Figure QLYQS_2 
Figure QLYQS_3