公开(公告)号：US20220399518A1

公开(公告)日：2022-12-15

申请号：US17776649

申请日：2021-06-08

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Xueqin CHEN ,  Congcong JIA ,  Yuqian SUN

IPC: H01L51/50 ,  H01L27/32

Abstract: The present disclosure provides a blue organic light-emitting diode. The blue organic light-emitting diode comprises a hole transport layer, a co-evaporation layer, a blue light-emitting auxiliary layer, a blue light-emitting layer, and an electron transport layer which are sequentially stacked. A material of the co-evaporation layer includes a mixture of a material of the hole transport layer and a material of the blue light-emitting auxiliary layer. The present disclosure also provides a display device. The display device has a good display effect under a low gray scale.