Invention Grant
- Patent Title: Light-emitting element, light-emitting device, and electronic appliance
- Patent Title (中): 发光元件,发光装置和电子设备
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Application No.: US11989324Application Date: 2006-07-19
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Publication No.: US08227982B2Publication Date: 2012-07-24
- Inventor: Yuji Iwaki , Junichiro Sakata , Hisao Ikeda , Tomoya Aoyama , Takaaki Nagata , Takahiro Kawakami , Satoshi Seo , Ryoji Nomura
- Applicant: Yuji Iwaki , Junichiro Sakata , Hisao Ikeda , Tomoya Aoyama , Takaaki Nagata , Takahiro Kawakami , Satoshi Seo , Ryoji Nomura
- 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: Robinson Intellectual Property Law Office, P.C.
- Agent Eric J. Robinson
- Priority: JP2005-213759 20050725; JP2005-230272 20050809
- International Application: PCT/JP2006/314710 WO 20060719
- International Announcement: WO2007/013478 WO 20070201
- Main IPC: H01J1/62
- IPC: H01J1/62

Abstract:
An object of the present invention is to provide a light-emitting element with high luminous efficiency, and a light-emitting element of low-voltage driving. Another object is to provide a light-emitting device with low power consumption by using the light-emitting element. Another object is to provide an electronic appliance with low power consumption by using the light-emitting device in a display portion. A light-emitting element includes, between a pair of electrodes, a layer containing a composite material of a first organic compound and an inorganic compound and a layer containing a second organic compound being in contact with the layer containing the composite material, wherein the second organic compound does not have a peak of an absorption spectrum in a wavelength region of 450 to 800 nm if the second organic compound is compounded with the inorganic compound.
Public/Granted literature
- US20090230847A1 Light-Emitting Element, Light-Emitting Device, and Electronic Appliance Public/Granted day:2009-09-17
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