Invention Grant
- Patent Title: Light-emitting element comprising the first to third layer and EL layer
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Application No.: US14483635Application Date: 2014-09-11
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Publication No.: US10403843B2Publication Date: 2019-09-03
- Inventor: Hiromi Nowatari , Satoshi Seo , Nobuharu Ohsawa , Tetsuo Tsutsui
- 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 Propert Law Office
- Agent Eric J. Robinson
- Priority: JP2008-306153 20081201; JP2009-130539 20090529
- Main IPC: H01L51/50
- IPC: H01L51/50 ; H01L51/00

Abstract:
Light-emitting elements in which an increase of driving voltage can be suppressed are provided. Light-emitting devices whose power consumption is reduced by including such light-emitting elements are also provided. In a light-emitting element having an EL layer between an anode and a cathode, a first layer in which carriers can be produced is formed between the cathode and the EL layer and in contact with the cathode, a second layer which transfers electrons produced in the first layer is formed in contact with the first layer, and a third layer which injects the electrons received from the second layer into the EL layer is formed in contact with the second layer.
Public/Granted literature
- US20140374737A1 LIGHT-EMITTING ELEMENT, LIGHT-EMITTING DEVICE, ELECTRONIC DEVICE, AND LIGHTING DEVICE Public/Granted day:2014-12-25
Information query
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