发明授权
- 专利标题: Organic electroluminescence element
- 专利标题(中): 有机电致发光元件
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申请号: US12379329申请日: 2009-02-19
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公开(公告)号: US08174001B2公开(公告)日: 2012-05-08
- 发明人: Yoshitaka Kitamura , Manabu Tobise , Masaru Kinoshita
- 申请人: Yoshitaka Kitamura , Manabu Tobise , Masaru Kinoshita
- 申请人地址: JP Tokyo
- 专利权人: FUJIFILM Corporation
- 当前专利权人: FUJIFILM Corporation
- 当前专利权人地址: JP Tokyo
- 代理机构: SOLARIS Intellectual Property Group, PLLC
- 优先权: JP2008-052504 20080303
- 主分类号: H01L35/24
- IPC分类号: H01L35/24
摘要:
An organic electroluminescence element including at least two light-emitting layers disposed between an anode and a cathode, wherein the at least two light-emitting layers include a light-emitting layer A that contains an electron transporting light-emitting material and a hole transporting host material, wherein a concentration of the electron transporting light-emitting material gradually increases from an anode side toward a cathode side of the light-emitting layer A, and a light-emitting layer B that contains a hole transporting light-emitting material and an electron transporting host material, wherein a concentration of the hole transporting light-emitting material gradually decreases from an anode side toward a cathode side of the light-emitting layer B. An organic EL element with high light-emission efficiency and excellent durability is provided.
公开/授权文献
- US20090218561A1 Organic electroluminescence element 公开/授权日:2009-09-03
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