Compound, display panel, and display apparatus

US11437589B2 · kind B2 · utility

Assignee

• Xiamen Tianma Micro-Electronics Co., Ltd. · CN

Inventors

• Quan Ran · Shanghai, CN
• Lei Zhang · Shanghai, CN
• Wei Gao · Shanghai, CN
• Jinghua Niu · Shanghai, CN
• Wenpeng Dai · Shanghai, CN

Key dates

• Filing date: Mar 30, 2020
• Grant date: Sep 6, 2022
• Expiry date: Feb 27, 2041

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10K2101/10

Abstract

The present disclosure relates provides an compound represented by Chemical Formula 1, in which Ar1, Ar2, Ar3 and Ar4 are C6-C40 aryl, or C5-C40 heteroaryl; R1 and R2 are —C(R)2—, —N(R)—, —O—, or —S—; X1, X2 and X3 are C or N; L1 and L2 are phenylene, naphthylene, or biphenylene; Y1 and Y2 are each an electron-withdrawing group selected from a N-containing heterocyclic group, or a cyano-containing group. The compound of the present disclosure has bipolar characteristics of simultaneously transmitting holes and electrons. The bipolar transmission host is beneficial to charge transmission balance in the light-emitting layer, and can widen the exciton recombination region, to simplify the device structure and improving device efficiency. The present disclosure further provides a display panel and a display apparatus.