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公开(公告)号：US08518556B2
公开(公告)日：2013-08-27
申请号：US12161540
申请日：2006-12-21
IPC分类号： H01L51/54
CPC分类号： H01L51/5036 , H01L51/5016 , H01L51/5262 , Y10T428/31504
摘要： Provided is an organic electroluminescence element which is driven with a reduced drive voltage without deteriorating emission luminance and has a high power efficiency. The organic electroluminescence element having at least one light emitting layer is characterized in that two or more types of light emitting dopants having different emission colors are included in at least one light emitting layer, the concentration of all the light emitting dopants included in the light emitting layer is 5 Vol % or more, and the concentration of the light emitting dopant giving a main emission color among the light emitting dopants in the light emitting layer is 2 Vol % or less.
摘要翻译： 提供一种有机电致发光元件，其以降低的驱动电压驱动而不劣化发光亮度并且具有高功率效率。 具有至少一个发光层的有机电致发光元件的特征在于，在至少一个发光层中包含具有不同发光颜色的两种或更多种类型的发光掺杂剂，包含在所述发光层中的所有发光掺杂剂的浓度 层为5体积％以上，发光层中的发光掺杂物中的发光掺杂物的主要发光颜色的浓度为2体积％以下。
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12.发明授权Multicolor phosphorescent organic electroluminescent element and lighting system 有权多色磷光有机电致发光元件及照明系统公开(公告)号：US08299787B2
公开(公告)日：2012-10-30
申请号：US12519075
申请日：2007-11-13
IPC分类号： G01V3/00
CPC分类号： C09K11/06 , C09K2211/1007 , C09K2211/1014 , C09K2211/1029 , C09K2211/1044 , C09K2211/1048 , C09K2211/1059 , C09K2211/185 , H01L51/0059 , H01L51/0071 , H01L51/0072 , H01L51/0073 , H01L51/0085 , H01L51/5036 , H05B33/14
摘要： This invention provides a multicolor phosphorescent organic electroluminescent element having an excellent electric power efficiency, a prolonged service life, an excellent storage stability, and an excellent stability of chromaticity against drive current, and a lighting system using the multicolor phosphorescent organic electroluminescent element. The multicolor phosphorescent organic electroluminescent element contains a plurality of phosphorescent dopants different from each other in luminescence wavelength and particularly exhibits white luminescence. Specifically, the multicolor phosphorescent organic electroluminescent element contains two or more phosphorescent dopants different from each other in luminescence wavelength and comprises two or more luminescent layers, the luminescent dopant being a phosphorescent dopant. The multicolor phosphorescent organic electroluminescent element is characterized in that at least one layer formed of luminescent layer A containing two or more phosphorescent dopants different from each other in luminescence wavelength in the same layer is provided, the content of the luminescent dopant having the highest concentration used in the luminescent layer A is not less than 4% by mass and not more than 20% by mass, and luminescent layer B having a maximum luminescence wavelength of not more than 480 nm is provided at a position near the cathode side as compared with the luminescent layer A.
摘要翻译： 本发明提供一种多色磷光有机电致发光元件，其具有优异的电力效率，延长的使用寿命，优异的储存稳定性和优异的色温对驱动电流的稳定性，以及使用该多色磷光有机电致发光元件的照明系统。 多色磷光有机电致发光元件在发光波长中含有彼此不同的多个磷光掺杂剂，特别是显示白色发光。 具体地，多色磷光有机电致发光元件在发光波长中含有彼此不同的两种或更多种磷光掺杂剂，并且包含两个或更多个发光层，发光掺杂剂是磷光掺杂剂。 多色磷光有机电致发光元件的特征在于，在同一层中，由发光层A形成的至少一层由发光波长彼此不同的两种以上的磷光掺杂剂构成，使用浓度最高的发光掺杂剂的含量 在发光层A中，不少于4质量％且20质量％以下，与阴极侧相比，在阴极侧附近的位置设置有最大发光波长为480nm以下的发光层B 发光层A.
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13.发明申请WHITE LIGHT EMISSION ORGANIC ELECTROLUMINESCENT ELEMENT, ILLUMINATING DEVICE AND DISPLAY 审中-公开白光发射有机电致发光元件，照明装置和显示公开(公告)号：US20110084601A1
公开(公告)日：2011-04-14
申请号：US12934943
申请日：2009-06-26
IPC分类号： H01J1/62
CPC分类号： H01L51/5036 , C09K11/06 , C09K2211/1029 , C09K2211/1044 , C09K2211/1088 , C09K2211/1092 , C09K2211/185 , H01L51/0071 , H01L51/0085 , H01L51/5016 , H05B33/14 , Y02B20/181
摘要： Disclosed is a coating type organic EL element having excellent chromaticity stability to driving current, excellent chromaticity stability during continuous driving and excellent color rendering property.
摘要翻译： 公开了一种对驱动电流具有优异的色度稳定性，连续驱动时色彩稳定性优异，显色性优异的涂布型有机EL元件。
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公开(公告)号：US20100127246A1
公开(公告)日：2010-05-27
申请号：US12595921
申请日：2008-04-04
CPC分类号： H05B33/14 , C09K11/06 , C09K2211/1029 , C09K2211/1044 , C09K2211/1092 , C09K2211/185 , H01L51/0071 , H01L51/0072 , H01L51/0085 , H01L51/0086 , H01L51/0087 , H01L51/0088 , H01L51/5016 , H01L51/5036 , Y02B20/181
摘要： Disclosed is a white light-emitting organic electroluminescent device, which is excellent in stability of emission chromaticity over a long operation period, while having high electrical efficiency, long life, excellent storage stability and excellent color rendering properties. Also disclosed is an illuminating device using such an organic electroluminescent device. Specifically disclosed is an organic electroluminescent device having a light-emitting layer between an anode and a cathode, which is characterized by comprising a light-emitting layer A having a maximum emission wavelength of not more than 480 nm and containing a phosphorescent dopant having a maximum emission wavelength of not more than 480 nm, and a light-emitting layer B arranged between the light-emitting layer A and the anode, which has a maximum emission wavelength of not less than 510 nm and contains a phosphorescent dopant. This organic electroluminescent device is also characterized in that the concentration of the phosphorescent dopant contained in the light-emitting layer A varies in the thickness direction of the light-emitting layer A. Also specifically disclosed is an illuminating device using such a white light-emitting organic electroluminescent device.
摘要翻译： 公开了一种白色发光有机电致发光器件，其具有高的电效率，长寿命，优异的储存稳定性和优异的显色性，其在长的操作期间的发光色度的稳定性优异。 还公开了使用这种有机电致发光器件的照明装置。 具体公开了一种在阳极和阴极之间具有发光层的有机电致发光器件，其特征在于包括具有最大发射波长不大于480nm并且含有最大发光波长的磷光掺杂剂的发光层A 发光波长不大于480nm，发光层B布置在发光层A和阳极之间，其发射波长不小于510nm，并且含有磷光掺杂剂。 该有机电致发光器件的特征还在于，发光层A中所含的磷光掺杂剂的浓度在发光层A的厚度方向上变化。具体公开了使用这种白色发光 有机电致发光器件。
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