Issued Patents 2025
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12317671 | Organic light emitting device having hole injection layer with doping concentration of first doping material gradually decreasing in direction away from anode, display device, preparation method and storage medium | Xiaojin ZHANG, Haiyan Sun | 2025-05-27 |