Nitrogen heterocyclic compound, display panel and display apparatus
US11434223B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 8, 2019 |
| Grant date | Sep 6, 2022 |
| Priority date | — |
| Expiry date | Feb 24, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K59/80524
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A nitrogen heterocyclic compound having a structure of Chemical Formula I is provided. z is 1 or 2, m and n are each 1 or 2, p and q are each 0, 1 or 2. X1-X6 are each independently nitrogen or carbon, and at least one of X1-X6 is nitrogen. R1, R2 and R3 are each independently C1-C10 linear or branched alkyl, substituted or unsubstituted aryl, fused aryl, an aromatic heterocyclic group, or a fused aromatic heterocyclic group. R1 and R2 may be otherwise a single bond. Ar1 and Ar2 are each substituted or unsubstituted aryl, fused aryl, an aromatic heterocyclic group, or a fused aromatic heterocyclic group. The nitrogen heterocyclic compound has a higher refractive index, can improve light extraction efficiency and luminous efficiency and alleviate angular dependence of luminescence when it is used as a capping layer CPL of an OLED device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.