The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 08, 2024
Filed:
Jul. 11, 2022
Semiconductor Energy Laboratory Co., Ltd., Atsugi, JP;
Hiroko Nomura, Kanagawa, JP;
Harue Osaka, Kanagawa, JP;
Takahiro Ushikubo, Kanagawa, JP;
Sachiko Kawakami, Kanagawa, JP;
Satoshi Seo, Kanagawa, JP;
Satoko Shitagaki, Kanagawa, JP;
Semiconductor Energy Laboratory Co., Ltd., Atsugi, JP;
Abstract
To provide a light-emitting element having high luminous efficiency and to provide a light-emitting device and an electronic device which consumes low power and is driven at low voltage, a carbazole derivative represented by the general formula (1) is provided. In the formula, α, α, α, and αeach represent an arylene group having less than or equal to 13 carbon atoms; Arand Areach represent an aryl group having less than or equal to 13 carbon atoms; Rrepresents any of a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted phenyl group, and a substituted or unsubstituted biphenyl group; and Rrepresents any of an alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted phenyl group, and a substituted or unsubstituted biphenyl group. In addition, l, n, and n are each independently 0 or 1.