Title:
ORGANIC ELECTROLUMINESCENT ELEMENT AND ELECTRONIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/191326
Kind Code:
A1
Abstract:
An organic electroluminescent element (1) which has a light emission region (5) containing two or more light-emitting layers and positioned between a positive electrode (3) and a negative electrode (4), and also has a plurality of peripheral layers which are respectively positioned on the positive electrode (3) side of the light emission region (5) and the negative electrode (4) side thereof, wherein: the peripheral layers have a positive electrode-side peripheral layer (61) and a negative electrode-side peripheral layer (71); the light emission region (5) at least includes a first light-emitting layer (51) and a second light-emitting layer (52); and the peripheral layer from among the positive electrode-side peripheral layer (61) and the negative electrode-side peripheral layer (71) which directly contacts the light-emitting layer containing the compound having the highest triplet energy, based on a comparison between the compound having the lowest triplet energy among the compounds contained in the first light-emitting layer (51) and the compound having the lowest triplet energy among the compounds contained in the second light-emitting layer (52), contains a compound containing at least one deuterium atom.
Inventors:
KAWAMURA YUICHIRO (JP)
Application Number:
PCT/JP2022/011034
Publication Date:
September 15, 2022
Filing Date:
March 11, 2022
Export Citation:
Assignee:
IDEMITSU KOSAN CO (JP)
International Classes:
C09K11/06; H01L51/50; H05B33/12
Foreign References:
| JP2013157552A | 2013-08-15 | |||
| JP2010186983A | 2010-08-26 | |||
| JP2009283891A | 2009-12-03 | |||
| JP2009267176A | 2009-11-12 | |||
| JP2019161218A | 2019-09-19 | |||
| KR20120118563A | 2012-10-29 | |||
| KR20200088704A | 2020-07-23 |
Attorney, Agent or Firm:
KINOSHITA & ASSOCIATES (JP)
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