公开(公告)号：US20200035931A1

公开(公告)日：2020-01-30

申请号：US16222935

申请日：2018-12-17

Applicant: Shanghai Tianma AM-OLED Co., Ltd

Inventor： Wei Gao ,  Xiangcheng Wang ,  Lei Zhang ,  Jinghua Niu ,  Yan Lu ,  Changxuan Fan ,  Gaojun Huang ,  Ping An

IPC: H01L51/00 ,  C07D495/04 ,  C09K11/06 ,  C07F5/02

Abstract: The present disclosure provides an aromatic heterocyclic compound having property of thermally activated delayed fluorescence (TADF). The aromatic heterocyclic compound has a structure represented by Formula (I), in which X1 and X2 each is S, O, Se, or C; D is an electron donor, A is an electron acceptor; m is a number of the electron donor D, and the m electron donors D are the same or different; n is a number of the electron acceptor, and the n electron acceptors are the same or different; and m and n are 1 or 2. The aromatic heterocyclic compound provides a high luminescence efficiency. Organic light-emitting display devices including such aromatic heterocyclic compound have improved luminescence efficiency, lower cost and longer service life by using the aromatic heterocyclic compound as a light-emitting material, a host material, or a guest material.