Title:
ORGANIC ELECTROLUMINESCENT ELEMENT AND ELECTRONIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/138949
Kind Code:
A1
Abstract:
An organic EL element (1) comprises a light-emitting layer including a first light-emitting layer (51) and a second light-emitting layer (52), and a hole transport zone (6) including at least two organic compound layers. A first organic compound layer (61) of the hole transport zone (6) contains a first organic material and a second organic material different from each other. The content of the first organic material in the first organic compound layer (61) is less than 10% by mass. The first light-emitting layer (51) includes a first host material and a first luminescent compound. The second light-emitting layer (52) includes a second host material and a second luminescent compound. A triplet energy T1(H1) of the first host material and a triplet energy T1(H2) of the second host material satisfy the relationship of Expression 1. Expression (1): T1(H1)>T1(H2)
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Inventors:
TOYOSHIMA HIROAKI (JP)
NISHIMURA KAZUKI (JP)
KAMBE EMIKO (JP)
NAKAMURA MASATO (JP)
MASUDA TETSUYA (JP)
TAKAHASHI YUSUKE (JP)
NISHIMURA KAZUKI (JP)
KAMBE EMIKO (JP)
NAKAMURA MASATO (JP)
MASUDA TETSUYA (JP)
TAKAHASHI YUSUKE (JP)
Application Number:
PCT/JP2021/048349
Publication Date:
June 30, 2022
Filing Date:
December 24, 2021
Export Citation:
Assignee:
IDEMITSU KOSAN CO (JP)
International Classes:
H01L51/50; C09K11/06; H05B33/12
Domestic Patent References:
| WO2020080417A1 | 2020-04-23 | |||
| WO2021049653A1 | 2021-03-18 | |||
| WO2021090932A1 | 2021-05-14 | |||
| WO2018186374A1 | 2018-10-11 | |||
| WO2018186396A1 | 2018-10-11 |
Foreign References:
| JP2011100943A | 2011-05-19 | |||
| JP2008509565A | 2008-03-27 | |||
| CN106221691A | 2016-12-14 |
Attorney, Agent or Firm:
KINOSHITA & ASSOCIATES (JP)
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