发明授权
US07166958B2 Light emitting device having dopant in a light emitting layer, and method of producing the light emitting device
有权
在发光层中具有掺杂剂的发光器件，以及制造该发光器件的方法
- 专利标题： Light emitting device having dopant in a light emitting layer, and method of producing the light emitting device
- 专利标题（中）： 在发光层中具有掺杂剂的发光器件，以及制造该发光器件的方法
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申请号： US10943868申请日： 2004-09-20
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公开(公告)号： US07166958B2公开(公告)日： 2007-01-23
- 发明人: Manabu Furugori , Shinjiro Okada , Akira Tsuboyama , Takao Takiguchi , Seishi Miura , Takashi Moriyama , Satoshi Igawa , Jun Kamatani , Hironobu Iwawaki
- 申请人： Manabu Furugori , Shinjiro Okada , Akira Tsuboyama , Takao Takiguchi , Seishi Miura , Takashi Moriyama , Satoshi Igawa , Jun Kamatani , Hironobu Iwawaki
- 申请人地址： JP Tokyo
- 专利权人： Canon Kabushiki Kaisha
- 当前专利权人： Canon Kabushiki Kaisha
- 当前专利权人地址： JP Tokyo
- 代理机构： Fitzpatrick, Cella, Harper & Scinto
- 优先权： JP2001-181416 20010615; JP2002-143441 20020517; JP2002-143442 20020517; JP2002-143443 20020517
- 主分类号： H05B33/14
- IPC分类号： H05B33/14
摘要：
A light emitting device having an anode and a cathode provided on a substrate, and an organic light emitting layer between the anode and the cathode, where the organic light emitting layer includes a light emitting material and a dopant for improving the dispersibility thereof. As the dopant, there are employed a light emitting compound and a non-light emitting compound or a current enhancing material. In case of employing the light emitting compound, the composition corresponds to a case of utilizing plural light emitting materials, and, in such case, the light emission wavelengths are preferably mutually closer. Also, evaporation of the light emitting material and the dopant in the same evaporation boat makes it possible to reduce evaporation temperature, thereby improving the dispersability of the light emitting material.