发明公开
- 专利标题: Light-Emitting Element, Display Device, Electronic Device, and Lighting Device
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申请号: US18667068申请日: 2024-05-17
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公开(公告)号: US20240306411A1公开(公告)日: 2024-09-12
- 发明人: Satomi MITSUMORI , Takeyoshi WATABE , Satoshi SEO , Yuko KUBOTA
- 申请人: Semiconductor Energy Laboratory Co., Ltd.
- 申请人地址: JP Kanagawa-ken
- 专利权人: Semiconductor Energy Laboratory Co., Ltd.
- 当前专利权人: Semiconductor Energy Laboratory Co., Ltd.
- 当前专利权人地址: JP Kanagawa-ken
- 优先权: JP 16101787 2016.05.20
- 分案原申请号: US16875562 2020.05.15
- 主分类号: H10K50/11
- IPC分类号: H10K50/11 ; H10K50/15 ; H10K50/16 ; H10K50/19 ; H10K50/852 ; H10K59/30 ; H10K59/35 ; H10K59/38 ; H10K85/30 ; H10K101/00 ; H10K101/10 ; H10K101/40
摘要:
A light-emitting element having low driving voltage and high emission efficiency is provided. In the light-emitting element, a combination of a guest material and a host material forms an exciplex. The guest material is capable of converting triplet excitation energy into light emission. Light emission from the light-emitting layer includes light emission from the guest material and light emission from the exciplex. The percentage of the light emission from the exciplex to the light emission from the light-emitting layer is greater than 0 percent and less than or equal to 60 percent. The energy after subtracting the energy of light emission from the exciplex from the energy of light emission from the guest material is greater than 0 eV and less than or equal to 0.23 eV.
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