	US 12,145,946 B2
	Composition for EL device
Satoshi Seo, Kanagawa (JP); Nobuharu Ohsawa, Kanagawa (JP); Toshiki Sasaki, Kanagawa (JP); and Hiromitsu Kido, Kanagawa (JP)
Assigned to Semiconductor Energy Laboratory Co., Ltd., Atsugi (JP)
Appl. No. 17/287,407
Filed by SEMICONDUCTOR ENERGY LABORATORY CO., LTD., Atsugi (JP)
PCT Filed Nov. 20, 2019, PCT No. PCT/IB2019/059953 § 371(c)(1), (2) Date Apr. 21, 2021, PCT Pub. No. WO2020/109927, PCT Pub. Date Jun. 4, 2020.
Claims priority of application No. 2018-225634 (JP), filed on Nov. 30, 2018.
Prior Publication US 2021/0395271 A1, Dec. 23, 2021
Int. Cl. C07D 519/00 (2006.01); C09K 11/06 (2006.01); H10K 50/11 (2023.01); H10K 50/15 (2023.01); H10K 50/16 (2023.01); H10K 85/60 (2023.01); H10K 101/10 (2023.01); H10K 101/40 (2023.01)

CPC C07D 519/00 (2013.01) [C09K 11/06 (2013.01); H10K 85/657 (2023.02); H10K 85/6576 (2023.02); C09K 2211/1048 (2013.01); C09K 2211/1051 (2013.01); H10K 50/11 (2023.02); H10K 50/15 (2023.02); H10K 50/16 (2023.02); H10K 2101/10 (2023.02); H10K 2101/40 (2023.02)]

21 Claims

1. A composition for an EL device comprising:

a first organic compound; and

a second organic compound,

wherein a difference in the 5% weight loss temperature between the first organic compound and the second organic compound measured by thermogravimetry under a pressure of 0.1 Pa or lower is less than or equal to 50° C.,

wherein the first organic compound has a benzofurodiazine skeleton or a benzothiodiazine skeleton, and

wherein the second organic compound has a carbazole skeleton.