US 12,256,592 B2
Organic light emitting device, method of manufacturing same, and display panel
Huiyun Yang, Beijing (CN); Xiaojin Zhang, Beijing (CN); and Haiyan Sun, Beijing (CN)
Assigned to Chengdu BOE Optoelectronics Technology Co., Ltd., Sichuan (CN); and BOE Technology Group Co., Ltd., Beijing (CN)
Filed by Chengdu BOE Optoelectronics Technology Co., Ltd., Sichuan (CN); and BOE Technology Group Co., Ltd., Beijing (CN)
Filed on Oct. 25, 2021, as Appl. No. 17/509,788.
Claims priority of application No. 202011156775.X (CN), filed on Oct. 26, 2020.
Prior Publication US 2022/0131101 A1, Apr. 28, 2022
Int. Cl. H01L 51/50 (2006.01); H01L 51/56 (2006.01); H10K 50/12 (2023.01); H10K 71/00 (2023.01); H10K 101/30 (2023.01); H10K 102/00 (2023.01)
CPC H10K 50/121 (2023.02) [H10K 71/00 (2023.02); H10K 2101/30 (2023.02); H10K 2102/351 (2023.02)] 20 Claims
OG exemplary drawing
 
1. An organic light emitting device, comprising a p-type host layer, an n-type host layer, and an interlayer disposed between the p-type host layer and the n-type host layer, wherein
at least one of the p-type host layer and the n-type host layer comprises a fluorescent dopant, and a preset distance is present between the fluorescent dopant and the interlayer;
the p-type host layer and the n-type host layer are configured to form, together with the interlayer, a spatially separated exciplex under an action of driving voltage; and
the fluorescent dopant is configured to absorb energy of singlet excitons generated by the exciplex to emit light.