公开(公告)号：US20210119166A1

公开(公告)日：2021-04-22

申请号：US16618803

申请日：2019-11-13

Applicant: TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.

Inventor： Yuanchun WU ,  Shibo Jiao ,  Yang Liu

IPC: H01L51/50 ,  H01L51/00

Abstract: An OLED display panel and a display device are provided. The OLED display panel includes doped light emitting layers formed by doping the same main blue fluorescent luminescent material with the same secondary thermally activated delayed fluorescence material. A doping concentration of the secondary material in a first doped light emitting layer and a doping concentration of the secondary material in a second doped light emitting layer are different. It is advantageous for different light emitting layers to emit different wavelengths so as to realize generating multiple electroluminescence peaks, broaden the luminescence spectrum, improve a color rendering index, and thus achieve the effect of simplifying a light emitting layer structure.