US 12,349,538 B2
Light-emitting device, display device, light-emitting apparatus, electronic device, and lighting device
Takeyoshi Watabe, Kanagawa (JP); Yuta Kawano, Kanagawa (JP); Airi Ueda, Kanagawa (JP); Nobuharu Ohsawa, Kanagawa (JP); and Satoshi Seo, Kanagawa (JP)
Assigned to Semiconductor Energy Laboratory Co., Ltd., Atsugi (JP)
Filed by SEMICONDUCTOR ENERGY LABORATORY CO., LTD., Atsugi (JP)
Filed on Mar. 16, 2022, as Appl. No. 17/695,982.
Claims priority of application No. 2021-052207 (JP), filed on Mar. 25, 2021.
Prior Publication US 2022/0320470 A1, Oct. 6, 2022
Int. Cl. H10K 50/858 (2023.01); H10K 50/844 (2023.01)
CPC H10K 50/858 (2023.02) [H10K 50/844 (2023.02)] 19 Claims
OG exemplary drawing
 
8. A light-emitting device comprising a light-emitting layer between a pair of electrodes,
wherein one of the pair of electrodes is a light-transmitting electrode,
wherein a cap layer is in contact with a surface of the light-transmitting electrode on the side opposite to the light-emitting layer, and
wherein the cap layer comprises a material comprising 5,5′-diphenyl-2,2′-di-5H-[1]benzothieno[3,2-c]carbazole, 3-{4-(triphenylen-2-yl)phenyl}-9-(triphenylen-2-yl)-9H-carbazole, 3,6-bis[4-(2-naphthyl)phenyl]-9-(2-naphthyl)-9H-carbazole, 9-[4-(2,2′-binaphthalen-6-yl)phenyl]-3-[4-(2-naphthyl)phenyl]-9H-carbazole, 2-{4-[2-(N-phenyl-9H-carbazol-3-yl)-9H-carbazol-9-yl]phenyl}dibenzo[f,h]quinoxaline, N,N-bis[4-(6-phenylbenzo[b]naphtho[1,2-d]furan-8-yl)phenyl]-4-amino-p-terphenyl, 9-[4-(9′-phenyl-3,3′-bi-9H-carbazol-9-yl)phenyl]naphtho[1′2′:4,5]furo[2,3-b]pyrazine, or 4,8-bis[3-(triphenylen-2-yl)phenyl]-[1]benzofuro[3,2-d]pyrimidine.