Title:
ORGANIC ELECTROLUMINESCENT ELEMENT, ELECTRONIC DEVICE, AND COMPOUND
Document Type and Number:
WIPO Patent Application WO/2023/017704
Kind Code:
A1
Abstract:
The present invention is an organic electroluminescent element (1) having a light-emitting region (5) disposed between a positive electrode (3) and a negative electrode (4). The light-emitting region (5) includes a first light-emitting layer (51) and a second light-emitting layer (52); the ratio of the film thickness DEM1 of the first light-emitting layer (51) to the film thickness DEM2 of the second light-emitting layer (52), DEM1/DEM2, is 2/3 to 3/2; the first light-emitting layer (51) includes a first host material and a first light-emitting compound, and the second light-emitting layer (52) includes a second host material and a second light-emitting compound; and the first host material has a group represented by general formula (10) and is a compound represented by general formula (1).
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Inventors:
ITOI HIROAKI (JP)
KUDO YU (JP)
BAN SHINTARO (JP)
YAMAKI TARO (JP)
MORITA TAKAMOTO (JP)
KUDO YU (JP)
BAN SHINTARO (JP)
YAMAKI TARO (JP)
MORITA TAKAMOTO (JP)
Application Number:
PCT/JP2022/027577
Publication Date:
February 16, 2023
Filing Date:
July 13, 2022
Export Citation:
Assignee:
IDEMITSU KOSAN CO (JP)
International Classes:
H05B33/12; C07C13/66; C09K11/06
Domestic Patent References:
| WO2021049653A1 | 2021-03-18 | |||
| WO2009081774A1 | 2009-07-02 |
Foreign References:
| JP2019161218A | 2019-09-19 | |||
| US20200235320A1 | 2020-07-23 | |||
| CN113429399A | 2021-09-24 |
Attorney, Agent or Firm:
KINOSHITA & ASSOCIATES (JP)
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