公开(公告)号：US20220073491A1

公开(公告)日：2022-03-10

申请号：US17359457

申请日：2021-06-25

Applicant: BOE Technology Group Co., Ltd.

Inventor： Rongrong GAO ,  Dongxu ZHANG

IPC: C07D319/24 ,  H01L51/00

Abstract: The present application provides a dioxin derivative, a preparation method thereof, an electron transport layer, an OLED device and a display panel. The dioxin derivative has a formula of where X is O, S or NR; L represents a direct bond, or L is a substituted or unsubstituted C6-C60 arylene, or L is a C2-C60 heteroaryl including a first heteroatom; A has a formula of Ar1 and Ar2 independently are substituted or unsubstituted aryl, phenyl, biphenyl, or hererocyclyl comprising a second heteroatom, B is O, S or Se, X1, X2 and X3 independently are C or N, and at least one of X1, X2 or X3 is N, R4, R5 and R6 independently are C5-C30 aromatic or heteroaromatic group ring.