Shanghai Tianma Am-oled Co., Ltd.

Xueqiang Luo

Lei Zhang

Jinghua Niu

Ping An

Xiangcheng Wang

Wei Gao

Gaojun Huang

Ying Liu

Dongyang Deng

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&#x2264;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. 

Compound and organic light-emitting display device

The present disclosure relates to a nitrogen heterocycle fused ring-indene compound having a structure represented by the Formula (I), in which Arrepresents a substituted or unsubstituted aromatic fused ring group containing at least one nitrogen heteroaryl; Arrepresents a chemical group acting as an electron donor; Rand Rare independently selected from the group consisting of hydrogen, substituted or unsubstituted C1-C20 alkyl, substituted or unsubstituted C3-C20 cycloalkyl, substituted or unsubstituted C1-C20 alkoxy, substituted or unsubstituted C3-C20 heterocyclyl, substituted or unsubstituted C6-C40 aryl, and substituted or unsubstituted C5-C40 heteroaryl. The compounds according to the present disclosure have high glass transition temperature and thermal stability, and are easy to form a high-quality amorphous film, so that a driving voltage can be lowered, the luminous efficiency and lifetime of the device are improved.

Nitrogen heterocycle fused ring-indene compound and organic light-emitting display device

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Shanghai, China

Xueqiang Luo