发明授权
- 专利标题: Light-emitting element, light-emitting device, electronic device, and lighting device
-
申请号: US14952546申请日: 2015-11-25
-
公开(公告)号: US09373808B2公开(公告)日: 2016-06-21
- 发明人: Nobuharu Ohsawa , Takahiro Ushikubo
- 申请人: Semiconductor Energy Laboratory Co., Ltd.
- 申请人地址: JP
- 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
- 代理机构: Husch Blackwell LLP
- 优先权: JP2012-261011 20121129; JP2012-264071 20121203; JP2013-043643 20130306
- 主分类号: H01L51/00
- IPC分类号: H01L51/00 ; H01L51/50
摘要:
Provided is a novel light-emitting element and a light-emitting element with high light emission efficiency. A light-emitting element at least includes a first electrode, a first light-emitting layer over the first electrode, a second light-emitting layer over and in contact with the first light-emitting layer, a third light-emitting layer over and in contact with the first light-emitting layer, and a second electrode over the third light-emitting layer. One of the first light-emitting layer and the second light-emitting layer contains at least a green-light-emitting phosphorescent compound. The other of the first light-emitting layer and the second light-emitting layer contains at least an orange-light-emitting phosphorescent compound. The third light-emitting layer contains at least a blue-light-emitting hole-trapping fluorescent compound and an organic electron-transport compound that disperses the fluorescent compound.
公开/授权文献
信息查询
IPC分类: