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Light-emitting element, light-emitting device, electronic device, and lighting device 发明授权

2023-09-25 2060 1005K 0

专利信息

申请日期 2025-06-27 申请号 US13051104
公开(公告)号 US9023491B2 公开(公告)日 2015-05-05
公开国别 US 申请人省市代码 全国
申请人 Hiromi Nowatari; Satoshi Seo
简介 Provided are a light-emitting element in which a driving voltage increase can be suppressed and a light-emitting device which has reduced power consumption by including the light-emitting element. The element includes an EL layer between an anode and a cathode, and has a first, a second, and a third layer between the cathode and the EL layer. The first layer is between and in contact with the cathode and the second layer and includes a hole-transport substance. The second layer is between and in contact with the first the third layers and includes a phthalocyanine-based material. The third layer is between and in contact with the second and EL layers and includes an alkali metal, an alkaline-earth metal, a rare-earth metal, an alkali metal compound, an alkaline-earth metal compound, or a rare-earth metal compound. The phthalocyanine-based material has a metal-oxygen bond.


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