Title:
発光素子、表示装置、電子機器、及び照明装置
Document Type and Number:
Japanese Patent JP7187641
Kind Code:
B2
Abstract:
To provide a light-emitting element with high emission efficiency and low driving voltage. The light-emitting element includes a guest material and a host material. A HOMO level of the guest material is higher than a HOMO level of the host material. An energy difference between the LUMO level and a HOMO level of the guest material is larger than an energy difference between the LUMO level and a HOMO level of the host material. The guest material has a function of converting triplet excitation energy into light emission. An energy difference between the LUMO level of the host material and the HOMO level of the guest material is larger than or equal to energy of light emission of the guest material.
Inventors:
Satoshi Satoshi
Gokichi Watanabe
Tomomi Watanabe
Gokichi Watanabe
Tomomi Watanabe
Application Number:
JP2021164567A
Publication Date:
December 12, 2022
Filing Date:
October 06, 2021
Export Citation:
Assignee:
Semiconductor Energy Laboratory Co., Ltd.
International Classes:
H01L51/50; G09F9/30; H01L27/32; H05B33/12
Domestic Patent References:
| JP2014511564A | ||||
| JP2013051160A | ||||
| JP2013229268A | ||||
| JP2010283384A | ||||
| JP2008535266A | ||||
| JP2006032757A | ||||
| JP2002038140A |
Foreign References:
| US20170331048 |