Amine compound, and organic electroluminescent element, electronic element, and electronic device using said compound
Arylamine-based compounds with optimized refractive and attenuation properties enhance light extraction and stability in organic electroluminescent elements, addressing inefficiencies in conventional capping layer materials.
WO2026134110A1PCT designated stage Publication Date: 2026-06-25HODOGAYA CHEMICAL CO LTD
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- HODOGAYA CHEMICAL CO LTD
- Filing Date
- 2025-12-11
- Publication Date
- 2026-06-25
AI Technical Summary
Technical Problem
Conventional capping layer materials in organic electroluminescent elements suffer from reduced light extraction efficiency and material degradation due to insufficient refractive index, attenuation coefficient, and stability, particularly in the blue light emission range and under UV exposure.
Method used
Development of arylamine-based compounds with a high refractive index in the 450 nm to 750 nm range and a high attenuation coefficient in the 400 nm to 410 nm range, optimized for use as a capping layer material in organic electroluminescent elements.
Benefits of technology
Improves light extraction efficiency and enhances the stability of organic electroluminescent elements by suppressing material degradation, particularly in blue light emission and under UV exposure.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure JP2025043372_25062026_PF_FP_ABST
Abstract
An amine compound according to the present invention has a benzazole ring structure represented by general formula (a). The amine compound exhibits excellent stability and durability in thin films, and can provide, through optimization of the molecular design, a material in which the refractive index of visible light is high and the extinction coefficient of light near ultraviolet light is high. By using the compound in a material constituting a capping layer, an organic EL element that has excellent luminous efficiency can be obtained. R1-R4 each represent H, an aryl group, or a heteroaryl group, where at least one of these represents an aryl group or a heteroaryl group. L1-L3 each represent a divalent group such as a phenylene group, X1-X3 each represent O or S, and Y1 and Y2 each represent N or a methine group.
Need to check novelty before this filing date? Find Prior Art