Invention Grant
- Patent Title: Organic electroluminescent device
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Application No.: US16459484Application Date: 2019-07-01
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Publication No.: US10689568B2Publication Date: 2020-06-23
- Inventor: Toshiyuki Matsuura , Hiroaki Itoi , Naoya Sakamoto , Nobutaka Akashi
- Applicant: Samsung Display Co., Ltd.
- Applicant Address: KR Yongin-si
- Assignee: Samsung Display Co., Ltd.
- Current Assignee: Samsung Display Co., Ltd.
- Current Assignee Address: KR Yongin-si
- Agency: Lewis Roca Rothgerber Christie LLP
- Priority: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@606c2882 com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@36d9401d
- Main IPC: C09K11/02
- IPC: C09K11/02 ; H01L51/50 ; C07D403/10 ; C07C211/61 ; C07C211/43 ; C07C211/44 ; C07C211/49 ; C07D401/14 ; H01L51/00

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
- US20190322927A1 ORGANIC ELECTROLUMINESCENT DEVICE Public/Granted day:2019-10-24
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