US 12,004,363 B2
Light-emitting structure, display panel and display device
Dong Li, Beijing (CN); Wenhai Mei, Beijing (CN); and Boris Kristal, Beijing (CN)
Assigned to BEIJING BOE TECHNOLOGY DEVELOPMENT CO., LTD., Beijing (CN); and BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
Appl. No. 17/255,569
Filed by BEIJING BOE TECHNOLOGY DEVELOPMENT CO., LTD., Beijing (CN); and BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
PCT Filed Feb. 26, 2020, PCT No. PCT/CN2020/076750
§ 371(c)(1), (2) Date Dec. 23, 2020,
PCT Pub. No. WO2020/215882, PCT Pub. Date Oct. 29, 2020.
Claims priority of application No. 201910343913.6 (CN), filed on Apr. 26, 2019.
Prior Publication US 2021/0288281 A1, Sep. 16, 2021
Int. Cl. H10K 50/16 (2023.01); C01B 25/08 (2006.01); C01G 9/00 (2006.01); C09K 11/08 (2006.01); C09K 11/70 (2006.01); H10K 50/115 (2023.01); B82Y 20/00 (2011.01); H10K 101/30 (2023.01); H10K 102/00 (2023.01)
CPC H10K 50/16 (2023.02) [C01B 25/087 (2013.01); C01G 9/006 (2013.01); C09K 11/0883 (2013.01); C09K 11/70 (2013.01); H10K 50/115 (2023.02); B82Y 20/00 (2013.01); C01P 2004/64 (2013.01); C01P 2006/40 (2013.01); H10K 2101/30 (2023.02); H10K 2102/331 (2023.02)] 19 Claims
OG exemplary drawing
 
1. A light-emitting structure, comprising:
a first light-emitting element comprising a first light-emitting layer, a first electron transport layer, and a first cathode,
wherein the first cathode is in contact with the first electron transport layer, an energy level of conduction band minimum (CBM) of the first electron transport layer is larger than a Fermi level of the first cathode, and a difference between the energy level of CBM of the first electron transport layer and the Fermi level of the first cathode is in a range from 0.3 to 0.6 eV,
the energy level of CBM of the first light-emitting layer is smaller than that of the first electron transport layer, the first electron transport layer comprises ZnMgO nanoparticles, and a molar percentage of Mg in the first electron transport layer is in a range from 10% to 20%.