公开(公告)号：US20080122350A1

公开(公告)日：2008-05-29

申请号：US11984357

申请日：2007-11-16

申请人： Junichiro Sakata ,  Hideko Inoue ,  Satoshi Seo ,  Nobuharu Ohsawa

发明人： Junichiro Sakata ,  Hideko Inoue ,  Satoshi Seo ,  Nobuharu Ohsawa

IPC分类号： H01L27/28 ,  B05D5/12

CPC分类号： H01L51/5203 ,  H01L51/006 ,  H01L51/0067 ,  H01L51/008 ,  H01L51/0081 ,  H01L51/0085 ,  H01L51/0087 ,  H01L51/009 ,  H01L51/5012

摘要： A light-emitting element is provided which has a light-emitting layer between a first electrode and a second electrode, where the light-emitting layer has a first layer and a second layer; the first layer contains a first organic compound and a third organic compound; the second layer contains a second organic compound and the third organic compound; the first layer is provided to be in contact with the second layer on the first electrode side; the first organic compound is an organic compound with an electron transporting property; the second organic compound is an organic compound with a hole transporting property; the third organic compound has an electron trapping property; and light emission from the third organic compound can be obtained when voltage is applied to the first electrode and the second electrode so that the potential of the first electrode is higher than that of the second electrode.

摘要翻译： 提供一种在第一电极和第二电极之间具有发光层的发光元件，其中发光层具有第一层和第二层; 第一层包含第一有机化合物和第三有机化合物; 第二层包含第二有机化合物和第三有机化合物; 第一层设置成与第一电极侧的第二层接触; 第一有机化合物是具有电子传输性质的有机化合物; 第二有机化合物是具有空穴传输性的有机化合物; 第三有机化合物具有电子捕获性; 并且当对第一电极和第二电极施加电压使得第一电极的电位高于第二电极的电位时，可以获得来自第三有机化合物的发光。

公开(公告)号：US08564193B2

公开(公告)日：2013-10-22

申请号：US13541109

申请日：2012-07-03

申请人： Junichiro Sakata ,  Hideko Inoue ,  Satoshi Seo ,  Nobuharu Ohsawa

发明人： Junichiro Sakata ,  Hideko Inoue ,  Satoshi Seo ,  Nobuharu Ohsawa

IPC分类号： H01J1/62 ,  H01J63/04

CPC分类号： H01L51/5203 ,  H01L51/006 ,  H01L51/0067 ,  H01L51/008 ,  H01L51/0081 ,  H01L51/0085 ,  H01L51/0087 ,  H01L51/009 ,  H01L51/5012

摘要： A light-emitting element is provided which has a light-emitting layer between a first electrode and a second electrode, where the light-emitting layer has a first layer and a second layer; the first layer contains a first organic compound and a third organic compound; the second layer contains a second organic compound and the third organic compound; the first layer is provided to be in contact with the second layer on the first electrode side; the first organic compound is an organic compound with an electron transporting property; the second organic compound is an organic compound with a hole transporting property; the third organic compound has an electron trapping property; and light emission from the third organic compound can be obtained when voltage is applied to the first electrode and the second electrode so that the potential of the first electrode is higher than that of the second electrode.

公开(公告)号：US08231424B2

公开(公告)日：2012-07-31

申请号：US13032671

申请日：2011-02-23

申请人： Junichiro Sakata ,  Hideko Inoue ,  Satoshi Seo ,  Nobuharu Ohsawa

发明人： Junichiro Sakata ,  Hideko Inoue ,  Satoshi Seo ,  Nobuharu Ohsawa

IPC分类号： H01J9/24

CPC分类号： H01L51/5203 ,  H01L51/006 ,  H01L51/0067 ,  H01L51/008 ,  H01L51/0081 ,  H01L51/0085 ,  H01L51/0087 ,  H01L51/009 ,  H01L51/5012

摘要： A light-emitting element is provided which has a light-emitting layer between a first electrode and a second electrode, where the light-emitting layer has a first layer and a second layer; the first layer contains a first organic compound and a third organic compound; the second layer contains a second organic compound and the third organic compound; the first layer is provided to be in contact with the second layer on the first electrode side; the first organic compound is an organic compound with an electron transporting property; the second organic compound is an organic compound with a hole transporting property; the third organic compound has an electron trapping property; and light emission from the third organic compound can be obtained when voltage is applied to the first electrode and the second electrode so that the potential of the first electrode is higher than that of the second electrode.

摘要翻译： 提供一种在第一电极和第二电极之间具有发光层的发光元件，其中发光层具有第一层和第二层; 第一层包含第一有机化合物和第三有机化合物; 第二层包含第二有机化合物和第三有机化合物; 第一层设置成与第一电极侧的第二层接触; 第一有机化合物是具有电子传输性质的有机化合物; 第二有机化合物是具有空穴传输性的有机化合物; 第三有机化合物具有电子捕获性; 并且当对第一电极和第二电极施加电压使得第一电极的电位高于第二电极的电位时，可以获得来自第三有机化合物的发光。

公开(公告)号：US07911135B2

公开(公告)日：2011-03-22

申请号：US11984357

申请日：2007-11-16

申请人： Junichiro Sakata ,  Hideko Inoue ,  Satoshi Seo ,  Nobuharu Ohsawa

发明人： Junichiro Sakata ,  Hideko Inoue ,  Satoshi Seo ,  Nobuharu Ohsawa

IPC分类号： H01J1/62 ,  H01J63/04

CPC分类号： H01L51/5203 ,  H01L51/006 ,  H01L51/0067 ,  H01L51/008 ,  H01L51/0081 ,  H01L51/0085 ,  H01L51/0087 ,  H01L51/009 ,  H01L51/5012

摘要： A light-emitting element is provided which has a light-emitting layer between a first electrode and a second electrode, where the light-emitting layer has a first layer and a second layer; the first layer contains a first organic compound and a third organic compound; the second layer contains a second organic compound and the third organic compound; the first layer is provided to be in contact with the second layer on the first electrode side; the first organic compound is an organic compound with an electron transporting property; the second organic compound is an organic compound with a hole transporting property; the third organic compound has an electron trapping property; and light emission from the third organic compound can be obtained when voltage is applied to the first electrode and the second electrode so that the potential of the first electrode is higher than that of the second electrode.

摘要翻译： 提供一种在第一电极和第二电极之间具有发光层的发光元件，其中发光层具有第一层和第二层; 第一层包含第一有机化合物和第三有机化合物; 第二层包含第二有机化合物和第三有机化合物; 第一层设置成与第一电极侧的第二层接触; 第一有机化合物是具有电子传输性质的有机化合物; 第二有机化合物是具有空穴传输性的有机化合物; 第三有机化合物具有电子捕获性; 并且当对第一电极和第二电极施加电压使得第一电极的电位高于第二电极的电位时，可以获得来自第三有机化合物的发光。

公开(公告)号：US08405070B2

公开(公告)日：2013-03-26

申请号：US12575488

申请日：2009-10-08

申请人： Yuji Iwaki ,  Satoshi Seo ,  Daisuke Kumaki ,  Harue Nakashima ,  Kumi Kojima

发明人： Yuji Iwaki ,  Satoshi Seo ,  Daisuke Kumaki ,  Harue Nakashima ,  Kumi Kojima

IPC分类号： H01L35/24

CPC分类号： H05B33/22 ,  C09K11/06 ,  C09K2211/1029

摘要： An object is to provide a light emitting element with low drive voltage which contains an organic compound and an inorganic compound. One feature of a light emitting element of the present invention is to include a layer containing a light emitting material between a pair of electrodes, in which the layer containing a light emitting material has a layer containing a carbazole derivative represented by General Formula (1) and an inorganic compound which exhibits an electron accepting property to the carbazole derivative represented by General Formula (1). With such a structure, the inorganic compound accepts electrons from the carbazole derivative, carriers are generated internally, and a drive voltage of the light emitting element can be reduced.

摘要翻译： 目的是提供一种含有有机化合物和无机化合物的低驱动电压的发光元件。 本发明的发光元件的一个特征是包括在一对电极之间含有发光材料的层，其中含有发光材料的层具有含有由通式（1）表示的咔唑衍生物的层， 和对通式（1）表示的咔唑衍生物具有电子接受性的无机化合物。 通过这样的结构，无机化合物从咔唑衍生物接受电子，内部生成载流子，能够降低发光元件的驱动电压。

公开(公告)号：US20090309093A1

公开(公告)日：2009-12-17

申请号：US11371217

申请日：2006-03-09

申请人： Yuji Iwaki ,  Satoshi Seo ,  Daisuke Kumaki ,  Harue Nakashima ,  Kumi Kojima

发明人： Yuji Iwaki ,  Satoshi Seo ,  Daisuke Kumaki ,  Harue Nakashima ,  Kumi Kojima

IPC分类号： H01L51/54 ,  C09K11/06 ,  C09K11/08

CPC分类号： H05B33/22 ,  C09K11/06 ,  C09K2211/1029

摘要： An object is to provide a light emitting element with low drive voltage which contains an organic compound and an inorganic compound. One feature of a light emitting element of the present invention is to include a layer containing a light emitting material between a pair of electrodes, in which the layer containing a light emitting material has a layer containing a carbazole derivative represented by General Formula (1) and an inorganic compound which exhibits an electron accepting property to the carbazole derivative represented by General Formula (1). With such a structure, the inorganic compound accepts electrons from the carbazole derivative, carriers are generated internally, and a drive voltage of the light emitting element can be reduced.

摘要翻译： 目的是提供一种含有有机化合物和无机化合物的低驱动电压的发光元件。 本发明的发光元件的一个特征是包括在一对电极之间含有发光材料的层，其中含有发光材料的层具有含有由通式（1）表示的咔唑衍生物的层， 和对通式（1）表示的咔唑衍生物具有电子接受性的无机化合物。 通过这样的结构，无机化合物从咔唑衍生物接受电子，内部生成载流子，能够降低发光元件的驱动电压。

公开(公告)号：US20090206732A1

公开(公告)日：2009-08-20

申请号：US11994364

申请日：2006-07-03

申请人： Satoshi Seo ,  Yuji Iwaki

发明人： Satoshi Seo ,  Yuji Iwaki

IPC分类号： H01J1/63

CPC分类号： H05B33/12 ,  C09K11/06 ,  C09K2211/1007 ,  C09K2211/1014 ,  C09K2211/1022 ,  C09K2211/1029 ,  C09K2211/1044 ,  C09K2211/1059 ,  C09K2211/185 ,  H01L27/3244 ,  H01L51/0061 ,  H01L51/0085 ,  H01L51/5012 ,  H01L51/5016 ,  H01L51/5048 ,  H01L51/56 ,  H05B33/14

摘要： It is an object to provide a light-emitting element which can reduce power consumption. A light-emitting element is provided, which includes a pair of electrodes and a light-emitting layer interposed between the pair of electrodes. The light-emitting layer includes at least a first layer and a second layer, each of the first layer and the second layer includes an emission center and a host material, the emission center is dispersed in the host material, a thickness of each of the first layer and the second layer is 1 nm or more and 10 nm or less, and the first layer is not in contact with the second layer.

摘要翻译： 本发明的目的是提供能够降低功耗的发光元件。 提供了一种发光元件，其包括一对电极和插入在该对电极之间的发光层。 发光层至少包括第一层和第二层，第一层和第二层中的每一层包括发射中心和主体材料，发射中心分散在主体材料中，其厚度分别为 第一层和第二层为1nm以上且10nm以下，第一层不与第二层接触。

公开(公告)号：US08420227B2

公开(公告)日：2013-04-16

申请号：US10577471

申请日：2006-03-13

申请人： Yuji Iwaki ,  Satoshi Seo ,  Daisuke Kumaki

发明人： Yuji Iwaki ,  Satoshi Seo ,  Daisuke Kumaki

IPC分类号： H01L51/54

CPC分类号： H01L51/5004 ,  H01L51/0032 ,  H01L51/0051 ,  H01L51/0052 ,  H01L51/0058 ,  H01L51/0072 ,  H01L51/5068 ,  H01L51/5088 ,  H01L51/5278 ,  H01L2251/303 ,  Y10S428/917

摘要： An object of the present invention is to provide a composite material formed of an organic compound and an inorganic compound, and has an excellent carrier transporting property, an excellent carrier injecting property to the organic compound, as well as excellent transparency. A composite material of the present invention for achieving the above object is a composite material of an organic compound represented in the general formula below, and an inorganic compound. For the inorganic compound, an oxide of a transition metal, preferably an oxide of a metal belonging to groups 4 to 8 of the periodic table, in particular vanadium oxide, tantalum oxide, molybdenum oxide, tungsten oxide, rhenium oxide, and ruthenium oxide, can be used.

摘要翻译： 本发明的目的是提供一种由有机化合物和无机化合物形成的复合材料，具有优异的载流子传输性，对有机化合物具有良好的载流子注入性以及优异的透明性。 用于实现上述目的的本发明的复合材料是下述通式中表示的有机化合物和无机化合物的复合材料。 对于无机化合物，过渡金属的氧化物，优选属于周期表第4〜8族的金属的氧化物，特别是氧化钒，氧化钽，氧化钼，氧化钨，氧化铼和氧化钌， 可以使用。

公开(公告)号：US07649197B2

公开(公告)日：2010-01-19

申请号：US11371217

申请日：2006-03-09

申请人： Yuji Iwaki ,  Satoshi Seo ,  Daisuke Kumaki ,  Harue Nakashima ,  Kumi Kojima

发明人： Yuji Iwaki ,  Satoshi Seo ,  Daisuke Kumaki ,  Harue Nakashima ,  Kumi Kojima

IPC分类号： H01L35/24 ,  H01L51/00

CPC分类号： H05B33/22 ,  C09K11/06 ,  C09K2211/1029

摘要： An object is to provide a light emitting element with low drive voltage which contains an organic compound and an inorganic compound. One feature of a light emitting element of the present invention is to include a layer containing a light emitting material between a pair of electrodes, in which the layer containing a light emitting material has a layer containing a carbazole derivative represented by General Formula (1) and an inorganic compound which exhibits an electron accepting property to the carbazole derivative represented by General Formula (1). With such a structure, the inorganic compound accepts electrons from the carbazole derivative, carriers are generated internally, and a drive voltage of the light emitting element can be reduced.

摘要翻译： 目的是提供一种含有有机化合物和无机化合物的低驱动电压的发光元件。 本发明的发光元件的一个特征是包括在一对电极之间含有发光材料的层，其中含有发光材料的层具有含有由通式（1）表示的咔唑衍生物的层， 和对通式（1）表示的咔唑衍生物具有电子接受性的无机化合物。 通过这样的结构，无机化合物从咔唑衍生物接受电子，内部生成载流子，能够降低发光元件的驱动电压。

公开(公告)号：US20070001570A1

公开(公告)日：2007-01-04

申请号：US11452998

申请日：2006-06-15

申请人： Ryoji Nomura ,  Satoshi Seo ,  Yuji Iwaki ,  Nozomu Sugisawa

发明人： Ryoji Nomura ,  Satoshi Seo ,  Yuji Iwaki ,  Nozomu Sugisawa

IPC分类号： H01L51/52 ,  H05B33/12

CPC分类号： H01L27/326 ,  H01L51/5052 ,  H01L51/5092 ,  H01L51/5265

摘要： Color purity of a light emitting element is improved without an adverse effect such as reduction in voltage and luminance efficiency. The light emitting element has a light emitting laminated body including a light emitting layer between a pair of electrodes. A buffer layer is provided to be in contact with at least one of the electrodes. One of the electrodes is an electrode having high reflectance and the other is a translucent electrode. By employing a translucent electrode, light can be transmitted and reflected. An optical distance between the electrodes is adjusted in accordance with a thickness of the buffer layer, and accordingly, light can be resonated between the electrodes. The buffer layer is made of a composite material including an organic compound and a metal compound; therefore, voltage and luminance efficiency of the light emitting element is not affected even if a distance between the electrodes becomes long.

摘要翻译： 改善了发光元件的色纯度，而不会产生诸如降低电压和亮度效率的不利影响。 发光元件具有在一对电极之间具有发光层的发光层叠体。 提供缓冲层以与至少一个电极接触。 其中一个电极是具有高反射率的电极，另一个是透光电极。 通过使用透光性电极，可以发射和反射光。 根据缓冲层的厚度调整电极之间的光学距离，因此可以在电极之间共振光。 缓冲层由包含有机化合物和金属化合物的复合材料制成; 因此，即使电极之间的距离变长，发光元件的电压和亮度效率也不受影响。