Invention Application
- Patent Title: SPIROFLUORENE DERIVATIVE, MATERIAL FOR LIGHT-EMITTING ELEMENT, LIGHT-EMITTING ELEMENT, LIGHT-EMITTING DEVICE, AND ELECTRONIC DEVICE
- Patent Title (中): 发光元件衍射,发光元件,发光元件,发光器件和电子器件的材料
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Application No.: US14950613Application Date: 2015-11-24
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Publication No.: US20160087209A1Publication Date: 2016-03-24
- Inventor: Sachiko KAWAKAMI , Harue NAKASHIMA
- Applicant: Semiconductor Energy Laboratory Co., Ltd.
- Priority: JP2005-289418 20050930
- Main IPC: H01L51/00
- IPC: H01L51/00 ; C07D209/86

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
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