Invention Grant
- Patent Title: Fluorene derivative, light-emitting elements, light-emitting device, electronic device, and lighting device
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Application No.: US15673460Application Date: 2017-08-10
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Publication No.: US10553797B2Publication Date: 2020-02-04
- Inventor: Harue Osaka , Satoko Shitagaki , Tsunenori Suzuki , Nobuharu Ohsawa , Sachiko Kawakami , Satoshi Seo
- Applicant: Semiconductor Energy Laboratory Co., Ltd.
- Applicant Address: JP Atsugi-shi, Kanagawa-ken
- Assignee: Semiconductor Energy Laboratory Co., Ltd.
- Current Assignee: Semiconductor Energy Laboratory Co., Ltd.
- Current Assignee Address: JP Atsugi-shi, Kanagawa-ken
- Agency: Fish & Richardson P.C.
- Priority: JP2009-131504 20090529
- Main IPC: C07C209/10
- IPC: C07C209/10 ; H01L51/00 ; H05B33/14 ; H05B33/20 ; C09B57/00 ; C07C211/54 ; H01L51/50

Abstract:
An object is to provide a light-emitting element having high light-emission efficiency by provision of a novel fluorene derivative as represented by General Formula (G1) below. In the formula, R1 to R8 independently represent any of a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted phenyl group, or a substituted or unsubstituted biphenyl group. Further, α1 to α4 independently represent any of a substituted or unsubstituted arylene group having 6 to 12 carbon atoms. Furthermore, Ar1 and Ar2 independently represent any of an aryl group having 6 to 13 carbon atoms in a ring and Ar3 represents an alkyl group having 1 to 6 carbon atoms or a substituted or unsubstituted aryl group having 6 to 12 carbon atoms. J, k, m, and n each independently represent 0 or 1.
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