公开(公告)号：US11312710B2

公开(公告)日：2022-04-26

申请号：US16239546

申请日：2019-01-04

Applicant: SHANGHAI TIANMA AM-OLED CO., LTD.

Inventor： Wei Gao ,  Xiangcheng Wang ,  Lei Zhang ,  Jinghua Niu ,  Ying Liu ,  Dongyang Deng ,  Xueqiang Luo ,  Ping An ,  Gaojun Huang

IPC: H01L51/00 ,  C07D409/14 ,  C07D405/14 ,  C07D471/10 ,  H01L51/50 ,  C07D413/14

Abstract: The present disclosure provides a compound having property of thermally activated delayed fluorescence (TADF) and a display device. The compound has a structure represented by Formula (I), in which X 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, m and n are integers each independently selected from 1, 2, 3, 4 or 5, and m+n≤6. The above compound provides a high luminescence efficiency. The organic light-emitting display device has advantages of improved luminescence efficiency, lower cost and long service life by using the above compound as a light-emitting material, a host material, or a guest material.

公开(公告)号：US20200339608A1

公开(公告)日：2020-10-29

申请号：US16691494

申请日：2019-11-21

Applicant: Shanghai Tianma AM-OLED Co., Ltd.

Inventor： Wei Gao ,  Lei Zhang ,  Wenpeng Dai ,  Jinghua Niu ,  Dongyang Deng

IPC: C07F5/02 ,  C07F7/08 ,  C07D409/14 ,  H01L51/00

Abstract: The present disclosure describes a compound, a light-emitting material, an organic light-emitting display panel and an organic light-emitting display device. The compound has the structure of Formula I. The light-emitting material comprises any one or a combination of at least two of the compounds. The organic light-emitting display panel comprises an anode and a cathode disposed opposite to each other, and an organic layer disposed between the anode and the cathode. The material of the organic layer comprises any one or a combination of at least two of the compounds. The organic light-emitting display device comprises the organic light-emitting display panel. The compound has an energy level difference between a singlet and a triplet states as ΔEst≥0.30 eV, and, when used in an organic light-emitting display panel, can further increase the luminous efficiency of the device.