Invention Grant
- Patent Title: Spirofluorene derivative, material for light-emitting element, light-emitting element, light-emitting device, and electronic device
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Application No.: US15404331Application Date: 2017-01-12
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Publication No.: US09899602B2Publication Date: 2018-02-20
- Inventor: Sachiko Kawakami , Harue Nakashima
- Applicant: Semiconductor Energy Laboratory Co., Ltd.
- Applicant Address: JP Kanagawa-ken
- Assignee: Semiconductor Energy Laboratory Co., Ltd.
- Current Assignee: Semiconductor Energy Laboratory Co., Ltd.
- Current Assignee Address: JP Kanagawa-ken
- Agency: Robinson Intellectual Property Law Office
- Agent Eric J. Robinson
- Priority: JP2005-289418 20050930
- Main IPC: H01L51/50
- IPC: H01L51/50 ; H01L51/00 ; H01L51/52 ; H01L27/32 ; H01L29/49 ; C07C211/61
Abstract:
It is an object of the present invention to provide a material having a high Tg and a wide energy gap. The present invention provides a spirofluorene derivative represented by General Formula 1. (In the formula, R1 is any one of hydrogen, an alkyl group having 1 to 4 carbon atoms, or a group represented by General Formula 2. Each of R2 and R3 is either hydrogen or an alkyl group having 1 to 4 carbon atoms and may be identical or different. R4 is an aryl group having 6 to 15 carbon atoms. Each of R5 and R6 is any one of hydrogen, an alkyl group having 1 to 4 carbon atoms, or an aryl group having 6 to 15 carbon atoms and may be identical or different.)
Public/Granted literature
Information query
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