Invention Grant
- Patent Title: Organic electroluminescence device and method for producing the same
-
Application No.: US15443030Application Date: 2017-02-27
-
Publication No.: US09935275B2Publication Date: 2018-04-03
- Inventor: Naoyuki Hayashi
- Applicant: UDC IRELAND LIMITED
- Applicant Address: IE Dublin
- Assignee: UDC IRELAND LIMITED
- Current Assignee: UDC IRELAND LIMITED
- Current Assignee Address: IE Dublin
- Agency: Riverside Law LLP
- Priority: JP2010-056016 20100312; JP2011-044394 20110301
- Main IPC: H01L51/54
- IPC: H01L51/54 ; C09K11/06 ; H01L51/00 ; C09K11/02 ; H01L51/50 ; H01L51/56

Abstract:
An organic electroluminescence device including an anode, a cathode, an organic layer disposed between the anode and the cathode, the organic layer containing a hole injection layer, a hole transport layer and an emission layer containing a host material, wherein the hole injection layer, the hole transport layer and the emission layer each contain a phosphorescent light-emitting material, wherein the hole injection layer contains the phosphorescent light-emitting material in an amount of 10% by mass or more but less than 50% by mass, and wherein a concentration of the phosphorescent light-emitting material contained in the hole transport layer is lower than that in the hole injection layer, and a concentration of the phosphorescent light-emitting material contained in the emission layer is lower than that in the hole injection layer and higher than that in the hole transport layer.
Public/Granted literature
- US20170170410A1 Organic Electroluminescence Device And Method For Producing The Same Public/Granted day:2017-06-15
Information query
IPC分类: