Invention Grant
- Patent Title: Organic electroluminescence element
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Application No.: US15525161Application Date: 2015-11-05
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Publication No.: US10050237B2Publication Date: 2018-08-14
- Inventor: Ken Okamoto
- Applicant: KONICA MINOLTA, INC.
- Applicant Address: JP Tokyo
- Assignee: Konica Minolta, Inc.
- Current Assignee: Konica Minolta, Inc.
- Current Assignee Address: JP Tokyo
- Agency: Cozen O'Connor
- Priority: JP2014-231166 20141114
- International Application: PCT/JP2015/081135 WO 20151105
- International Announcement: WO2016/076187 WO 20160519
- Main IPC: H01L51/52
- IPC: H01L51/52

Abstract:
An object of the present invention is to provide an organic electroluminescent element containing: a plurality of light emitting units interposed between a pair of an anode and a cathode; and a charge generating unit formed between the light emitting units, wherein a light emitting layer of a light emitting unit located in an N-th order from the anode and a light emitting layer of a light emitting unit located in an (N+1)-th order from the anode each contain an emission dopant to emit light of the same emission color; and a largest maximum emission wavelength in a photoluminescent spectrum of the emission dopant in the light emitting layer of the N-th light emitting unit is shorter than a largest maximum emission wavelength in a photoluminescent spectrum of the emission dopant in the light emitting layer of the (N+1)-th light emitting unit.
Public/Granted literature
- US20170338446A1 Organic Electroluminescence Element Public/Granted day:2017-11-23
Information query
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