| abstract |
The invention belongs to the technical field of OLED and provides a compound having the structure shown in Chemical Formula 1, where Ar 1 and Ar 2 are selected from aryl or heteroaryl; A is selected from the group represented by Chemical Formula 1-1, and B is selected from benzene imidazole group. The compound of the present invention has a high refractive index, can effectively improve the external quantum efficiency (EQE) of organic light-emitting devices when used as a CPL material, and has a small extinction coefficient in the blue light region (wavelength is 400-450 nm), and has a low extinction coefficient for blue light. There is almost no absorption, which is beneficial to improve the luminous efficiency. The present invention also provides a display panel and a display device. |