Invention Application
- Patent Title: ORGANIC ELECTROLUMINESCENT DEVICE
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Application No.: US16233058Application Date: 2018-12-26
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Publication No.: US20190136127A1Publication Date: 2019-05-09
- Inventor: Toshiyuki Matsuura , Hiroaki Itoi , Naoya Sakamoto , Nobutaka Akashi
- Applicant: Samsung Display Co., Ltd.
- Priority: JP2014-227110 20141107; JP2014-227118 20141107
- Main IPC: C09K11/02
- IPC: C09K11/02 ; C07D401/14 ; C07D403/10 ; C07C211/44 ; C07C211/49 ; H01L51/50 ; C07C211/43 ; C07C211/61

Abstract:
An organic electroluminescent device of which emission life may be improved. The organic electroluminescent device includes an anode, an emission layer, and an anode-side hole transport layer provided between the anode and the emission layer and including an anode-side hole transport material. An electron accepting material is doped in the anode-side hole transport layer. An intermediate hole transport material layer is provided between the anode-side hole transport layer and the emission layer and includes an intermediate hole transport material, and an emission layer-side hole transport layer is provided between the intermediate hole transport material layer and the emission layer and adjacent to the emission layer. The emission layer-side hole transport layer includes an emission layer-side hole transport material represented by the following Formula 1.
Public/Granted literature
- US10385262B2 Organic electroluminescent device Public/Granted day:2019-08-20
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