Invention Application
- Patent Title: ORGANIC ELECTROLUMINESCENT DEVICE
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Application No.: US15048488Application Date: 2016-02-19
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Publication No.: US20160365515A1Publication Date: 2016-12-15
- Inventor: Naotoshi SUGANUMA , Hiroaki ITOI , Masatsugu UENO
- Applicant: Samsung Display Co., Ltd.
- Priority: JP2015-120441 20150615; JP2015-120442 20150615
- Main IPC: H01L51/00
- IPC: H01L51/00

Abstract:
An organic electroluminescent (EL) device having improved emission efficiency and emission lifetime. An embodiment of the organic EL device of the present disclosure includes a plurality of hole transport layers between an anode and an emission layer. The plurality of the hole transport layers may include an anode-side hole transport layer, a middle hole transport layer, and an emission layer-side hole transport layer. The emission layer-side hole transport layer may include an emission layer-side hole transport material represented by the following Formula 1:
Public/Granted literature
- US11133470B2 Organic electroluminescent device Public/Granted day:2021-09-28
Information query
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