公开(公告)号：US20130075782A1

公开(公告)日：2013-03-28

申请号：US13625323

申请日：2012-09-24

申请人： Kaoru Ikeda ,  Satoshi Seo

发明人： Kaoru Ikeda ,  Satoshi Seo

IPC分类号： H01L33/26

CPC分类号： H01L51/5024 ,  H01L33/26 ,  H01L51/00 ,  H01L51/50 ,  H01L51/5012 ,  H01L51/5016 ,  H01L51/5036 ,  H01L51/504 ,  H01L51/5048 ,  H01L51/5088 ,  H01L51/5278

摘要： An object is to improve luminous efficiency of a light emitting element using triplet exciton energy effectively. Another object is to reduce power consumption of a light emitting element, a light emitting device, and an electronic device. Triplet exciton energy generated in a light emitting layer which exhibits short wavelength fluorescence can be effectively utilized by use of a structure in which the light emitting layers which exhibit short wavelength fluorescence are sandwiched between light emitting layers each including a phosphorescent compound. Further, the emission balance can be improved between the light emitting layer including a phosphorescent compound and the light emitting layer which exhibits fluorescence by the devising of the structure of the light emitting layer which exhibits fluorescence.

摘要翻译： 目的是提高使用三线态激子能量的发光元件的发光效率。 另一个目的是减少发光元件，发光器件和电子设备的功耗。 通过使用其中发出短波长荧光的发光层夹在包含磷光化合物的发光层之间的结构，可以有效地利用在发出短波长荧光的发光层中产生的三重激子能量。 此外，通过设计出具有荧光的发光层的结构，可以提高包括磷光化合物的发光层与发光层之间的发光平衡。

公开(公告)号：US08115382B2

公开(公告)日：2012-02-14

申请号：US12212336

申请日：2008-09-17

申请人： Satoshi Seo ,  Tsunenori Suzuki ,  Kaoru Ikeda

发明人： Satoshi Seo ,  Tsunenori Suzuki ,  Kaoru Ikeda

IPC分类号： H01L51/50 ,  H01L51/52 ,  H01L51/54

CPC分类号： H01L51/5008 ,  H01L51/50 ,  H01L51/5048 ,  H01L51/5052 ,  H01L51/5056 ,  H01L51/5068 ,  H01L51/5072 ,  H01L51/5084 ,  H01L51/5088 ,  H01L51/5096 ,  H01L2251/552 ,  Y10S428/917

摘要： It is an object of the present invention to provide a light-emitting element with high light emission efficiency and with a long lifetime. A light-emitting device comprises a first electrode, a second electrode, a light-emitting layer, a first layer, and a second layer, wherein the first layer is provided between the light-emitting layer and the first electrode, the second layer is provided between the light-emitting layer and the second electrode, the first layer is a layer for controlling the hole transport, the second layer is a layer for controlling the electron transport, and light emission from the light-emitting layer is obtained when voltage is applied to the first electrode and the second electrode so that potential of the first electrode is higher than potential of the second electrode.

摘要翻译： 本发明的目的是提供一种具有高发光效率和长寿命的发光元件。 发光装置包括第一电极，第二电极，发光层，第一层和第二层，其中第一层设置在发光层和第一电极之间，第二层是 设置在发光层和第二电极之间，第一层是用于控制空穴传输的层，第二层是用于控制电子传输的层，并且当电压为 施加到第一电极和第二电极，使得第一电极的电位高于第二电极的电位。

公开(公告)号：US20090079326A1

公开(公告)日：2009-03-26

申请号：US12212290

申请日：2008-09-17

申请人： Satoshi Seo ,  Tsunenori Suzuki ,  Kaoru Ikeda

发明人： Satoshi Seo ,  Tsunenori Suzuki ,  Kaoru Ikeda

IPC分类号： H01L33/00

CPC分类号： H01L51/5048 ,  H01L51/5012 ,  H01L51/5016 ,  H01L51/5064 ,  H01L51/508 ,  H01L51/5088 ,  H01L2251/552

摘要： It is an object of the present invention to provide a light-emitting element with high light emission efficiency. It is another object of the present invention to provide a light-emitting element with a long lifetime. A light-emitting device is provided, which includes a light-emitting layer, a first layer, and a second layer between first electrode and a second electrode, wherein the first layer is provided between the light-emitting layer and the first electrode, the second layer is provided between the light-emitting layer and the second electrode, the first layer is a layer for controlling the hole transport, the second layer is a layer for controlling the electron transport, and a light emission from the light-emitting layer is obtained when voltage is applied to the first electrode and the second electrode so that potential of the first electrode is higher than potential of the second electrode.

摘要翻译： 本发明的目的是提供一种发光效率高的发光元件。 本发明的另一个目的是提供一种寿命长的发光元件。 提供一种发光器件，其包括在第一电极和第二电极之间的发光层，第一层和第二层，其中第一层设置在发光层和第一电极之间， 第二层设置在发光层和第二电极之间，第一层是用于控制空穴传输的层，第二层是用于控制电子传输的层，来自发光层的发光是 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获得。

公开(公告)号：US08274214B2

公开(公告)日：2012-09-25

申请号：US12546015

申请日：2009-08-24

申请人： Kaoru Ikeda ,  Satoshi Seo

发明人： Kaoru Ikeda ,  Satoshi Seo

IPC分类号： H01L51/50 ,  H01L51/54

CPC分类号： H01L51/5024 ,  H01L33/26 ,  H01L51/00 ,  H01L51/50 ,  H01L51/5012 ,  H01L51/5016 ,  H01L51/5036 ,  H01L51/504 ,  H01L51/5048 ,  H01L51/5088 ,  H01L51/5278

摘要： An object is to improve luminous efficiency of a light emitting element using triplet exciton energy effectively. Another object is to reduce power consumption of a light emitting element, a light emitting device, and an electronic device. Triplet exciton energy generated in a light emitting layer which exhibits short wavelength fluorescence can be effectively utilized by use of a structure in which the light emitting layers which exhibit short wavelength fluorescence are sandwiched between light emitting layers each including a phosphorescent compound. Further, the emission balance can be improved between the light emitting layer including a phosphorescent compound and the light emitting layer which exhibits fluorescence by the devising of the structure of the light emitting layer which exhibits fluorescence.

摘要翻译： 目的是提高使用三线态激子能量的发光元件的发光效率。 另一个目的是减少发光元件，发光器件和电子设备的功耗。 通过使用其中发出短波长荧光的发光层夹在包含磷光化合物的发光层之间的结构，可以有效地利用在发出短波长荧光的发光层中产生的三重激子能量。 此外，通过设计出具有荧光的发光层的结构，可以提高包括磷光化合物的发光层与发光层之间的发光平衡。

公开(公告)号：US20120138910A1

公开(公告)日：2012-06-07

申请号：US13371734

申请日：2012-02-13

申请人： Satoshi Seo ,  Tsunenori Suzuki ,  Kaoru Ikeda

发明人： Satoshi Seo ,  Tsunenori Suzuki ,  Kaoru Ikeda

IPC分类号： H01L51/54

CPC分类号： H01L51/5008 ,  H01L51/50 ,  H01L51/5048 ,  H01L51/5052 ,  H01L51/5056 ,  H01L51/5068 ,  H01L51/5072 ,  H01L51/5084 ,  H01L51/5088 ,  H01L51/5096 ,  H01L2251/552 ,  Y10S428/917

摘要： It is an object of the present invention to provide a light-emitting element with high light emission efficiency and with a long lifetime. A light-emitting device comprises a first electrode, a second electrode, a light-emitting layer, a first layer, and a second layer, wherein the first layer is provided between the light-emitting layer and the first electrode, the second layer is provided between the light-emitting layer and the second electrode, the first layer is a layer for controlling the hole transport, the second layer is a layer for controlling the electron transport, and light emission from the light-emitting layer is obtained when voltage is applied to the first electrode and the second electrode so that potential of the first electrode is higher than potential of the second electrode.

摘要翻译： 本发明的目的是提供一种具有高发光效率和长寿命的发光元件。 发光装置包括第一电极，第二电极，发光层，第一层和第二层，其中第一层设置在发光层和第一电极之间，第二层是 设置在发光层和第二电极之间，第一层是用于控制空穴传输的层，第二层是用于控制电子传输的层，并且当电压为 施加到第一电极和第二电极，使得第一电极的电位高于第二电极的电位。

公开(公告)号：US20090079337A1

公开(公告)日：2009-03-26

申请号：US12212336

申请日：2008-09-17

申请人： Satoshi Seo ,  Tsunenori Suzuki ,  Kaoru Ikeda

发明人： Satoshi Seo ,  Tsunenori Suzuki ,  Kaoru Ikeda

IPC分类号： H01J1/63

CPC分类号： H01L51/5008 ,  H01L51/50 ,  H01L51/5048 ,  H01L51/5052 ,  H01L51/5056 ,  H01L51/5068 ,  H01L51/5072 ,  H01L51/5084 ,  H01L51/5088 ,  H01L51/5096 ,  H01L2251/552 ,  Y10S428/917

摘要： It is an object of the present invention to provide a light-emitting element with high light emission efficiency and with a long lifetime. A light-emitting device comprises a first electrode, a second electrode, a light-emitting layer, a first layer, and a second layer, wherein the first layer is provided between the light-emitting layer and the first electrode, the second layer is provided between the light-emitting layer and the second electrode, the first layer is a layer for controlling the hole transport, the second layer is a layer for controlling the electron transport, and light emission from the light-emitting layer is obtained when voltage is applied to the first electrode and the second electrode so that potential of the first electrode is higher than potential of the second electrode.

摘要翻译： 本发明的目的是提供一种具有高发光效率和长寿命的发光元件。 发光装置包括第一电极，第二电极，发光层，第一层和第二层，其中第一层设置在发光层和第一电极之间，第二层是 设置在发光层和第二电极之间，第一层是用于控制空穴传输的层，第二层是用于控制电子传输的层，并且当电压为 施加到第一电极和第二电极，使得第一电极的电位高于第二电极的电位。

公开(公告)号：US08810125B2

公开(公告)日：2014-08-19

申请号：US13625323

申请日：2012-09-24

申请人： Kaoru Ikeda ,  Satoshi Seo

发明人： Kaoru Ikeda ,  Satoshi Seo

IPC分类号： H01L51/50 ,  H01L51/52 ,  H01L51/54 ,  H01L51/00

CPC分类号： H01L51/5024 ,  H01L33/26 ,  H01L51/00 ,  H01L51/50 ,  H01L51/5012 ,  H01L51/5016 ,  H01L51/5036 ,  H01L51/504 ,  H01L51/5048 ,  H01L51/5088 ,  H01L51/5278

摘要： An object is to improve luminous efficiency of a light emitting element using triplet exciton energy effectively. Another object is to reduce power consumption of a light emitting element, a light emitting device, and an electronic device. Triplet exciton energy generated in a light emitting layer which exhibits short wavelength fluorescence can be effectively utilized by use of a structure in which the light emitting layers which exhibit short wavelength fluorescence are sandwiched between light emitting layers each including a phosphorescent compound. Further, the emission balance can be improved between the light emitting layer including a phosphorescent compound and the light emitting layer which exhibits fluorescence by the devising of the structure of the light emitting layer which exhibits fluorescence.

摘要翻译： 目的是提高使用三线态激子能量的发光元件的发光效率。 另一个目的是减少发光元件，发光器件和电子设备的功耗。 通过使用其中发出短波长荧光的发光层夹在包含磷光化合物的发光层之间的结构，可以有效地利用在发出短波长荧光的发光层中产生的三重激子能量。 此外，通过设计出具有荧光的发光层的结构，可以提高包括磷光化合物的发光层与发光层之间的发光平衡。

公开(公告)号：US08803419B2

公开(公告)日：2014-08-12

申请号：US13371734

申请日：2012-02-13

申请人： Satoshi Seo ,  Tsunenori Suzuki ,  Kaoru Ikeda

发明人： Satoshi Seo ,  Tsunenori Suzuki ,  Kaoru Ikeda

IPC分类号： H01L51/50 ,  H01L51/52 ,  H01L51/54

CPC分类号： H01L51/5008 ,  H01L51/50 ,  H01L51/5048 ,  H01L51/5052 ,  H01L51/5056 ,  H01L51/5068 ,  H01L51/5072 ,  H01L51/5084 ,  H01L51/5088 ,  H01L51/5096 ,  H01L2251/552 ,  Y10S428/917

摘要： It is an object of the present invention to provide a light-emitting element with high light emission efficiency and with a long lifetime. A light-emitting device comprises a first electrode, a second electrode, a light-emitting layer, a first layer, and a second layer, wherein the first layer is provided between the light-emitting layer and the first electrode, the second layer is provided between the light-emitting layer and the second electrode, the first layer is a layer for controlling the hole transport, the second layer is a layer for controlling the electron transport, and light emission from the light-emitting layer is obtained when voltage is applied to the first electrode and the second electrode so that potential of the first electrode is higher than potential of the second electrode.

摘要翻译： 本发明的目的是提供一种具有高发光效率和长寿命的发光元件。 发光装置包括第一电极，第二电极，发光层，第一层和第二层，其中第一层设置在发光层和第一电极之间，第二层是 设置在发光层和第二电极之间，第一层是用于控制空穴传输的层，第二层是用于控制电子传输的层，并且当电压为 施加到第一电极和第二电极，使得第一电极的电位高于第二电极的电位。

公开(公告)号：US08384283B2

公开(公告)日：2013-02-26

申请号：US12212290

申请日：2008-09-17

申请人： Satoshi Seo ,  Tsunenori Suzuki ,  Kaoru Ikeda

发明人： Satoshi Seo ,  Tsunenori Suzuki ,  Kaoru Ikeda

IPC分类号： H01L33/00

CPC分类号： H01L51/5048 ,  H01L51/5012 ,  H01L51/5016 ,  H01L51/5064 ,  H01L51/508 ,  H01L51/5088 ,  H01L2251/552

摘要： It is an object of the present invention to provide a light-emitting element with high light emission efficiency. It is another object of the present invention to provide a light-emitting element with a long lifetime. A light-emitting device is provided, which includes a light-emitting layer, a first layer, and a second layer between first electrode and a second electrode, wherein the first layer is provided between the light-emitting layer and the first electrode, the second layer is provided between the light-emitting layer and the second electrode, the first layer is a layer for controlling the hole transport, the second layer is a layer for controlling the electron transport, and a light emission from the light-emitting layer is obtained when voltage is applied to the first electrode and the second electrode so that potential of the first electrode is higher than potential of the second electrode.

摘要翻译： 本发明的目的是提供一种发光效率高的发光元件。 本发明的另一个目的是提供一种寿命长的发光元件。 提供一种发光器件，其包括在第一电极和第二电极之间的发光层，第一层和第二层，其中第一层设置在发光层和第一电极之间， 第二层设置在发光层和第二电极之间，第一层是用于控制空穴传输的层，第二层是用于控制电子传输的层，来自发光层的发光是 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获得。

公开(公告)号：US08299456B2

公开(公告)日：2012-10-30

申请号：US12546038

申请日：2009-08-24

申请人： Satoshi Seo ,  Kaoru Ikeda

发明人： Satoshi Seo ,  Kaoru Ikeda

IPC分类号： H01L50/00

CPC分类号： H01L51/5036 ,  H01L51/5016 ,  H01L2251/552

摘要： Disclosed is a light-emitting element having a light-emitting layer which includes a first layer, a second layer, and a third layer provided in this order on an anode side between the anode and a cathode. The first layer has a hole-transporting property, the second layer has a bipolar property, and the third layer has an electron-transporting property, wherein the first layer contains a first fluorescent compound and a hole-transporting organic compound, the second layer contains a phosphorescent compound and a host material, and the third layer contains a second fluorescent compound and an electron-transporting organic compound. The light-emitting layer is also arranged so that the triplet-excitation energy of both the hole-transporting organic compound and the electron-transporting organic compound are greater than that of the host material. The use of the light-emitting layer with the above-mentioned structure enables production of a light-emitting element with improved luminous efficiency and reduced power consumption.

摘要翻译： 公开了具有发光层的发光元件，该发光层包括在阳极和阴极之间的阳极侧依次设置的第一层，第二层和第三层。 第一层具有空穴传输性，第二层具有双极性，第三层具有电子传输性，第一层含有第一荧光化合物和空穴传输性有机化合物，第二层含有 磷光化合物和主体材料，第三层含有第二荧光化合物和电子传输有机化合物。 发光层也被布置成使得空穴传输有机化合物和电子传输有机化合物的三重激发能量大于主体材料的三重激发能。 通过使用具有上述结构的发光层，能够实现发光效率的提高和功耗的降低。