公开(公告)号：US20180277789A1

公开(公告)日：2018-09-27

申请号：US15991579

申请日：2018-05-29

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Daisuke Kumaki ,  Satoshi Seo

IPC: H01L51/52

CPC classification number: H01L51/5234 ,  H01L27/3244 ,  H01L51/5048 ,  H01L51/5056 ,  H01L51/5076 ,  H01L51/5203 ,  H01L51/5265 ,  H01L2251/305 ,  H01L2251/306 ,  H01L2251/308 ,  H01L2251/558

Abstract: It is an object of the present invention to provide a light-emitting element having a layer containing a light-emitting material and a transparent conductive film between a pair of electrodes, in which electric erosion of the transparent conductive film and metal can be prevented, and also to provide a light-emitting device using the light-emitting element. According to one feature of the invention, a light-emitting element includes a first layer 102 containing a light-emitting material, a second layer 103 containing a material having a donor level, a third layer 104 including a transparent conductive film, and a fourth layer 105 containing a hole-transporting medium between a first electrode 101 and a second electrode 106, in which the first layer 102, the second layer 103, the third layer 104, the fourth layer 105, and the second electrode 106 are provided sequentially, in which the second electrode 106 has a layer containing metal.

公开(公告)号：US08922116B2

公开(公告)日：2014-12-30

申请号：US13731442

申请日：2012-12-31

Applicant: Semiconductor Energy Laboratory, Co., Ltd.

Inventor： Daisuke Kumaki ,  Hisao Ikeda ,  Hiroko Abe ,  Satoshi Seo

IPC: H01L51/50 ,  H01L51/52 ,  H01L27/32

CPC classification number: H01L51/5237 ,  H01L27/3209 ,  H01L27/3241 ,  H01L27/3244 ,  H01L51/5048 ,  H01L51/506 ,  H01L51/5076 ,  H01L51/5278 ,  Y10S428/917 ,  Y10T428/24942

Abstract: A light emitting element of the invention includes n pieces of light emitting layers (n is a natural number) between first and second electrodes. A first layer and a second layer are provided between the mth light emitting layer (m is a natural number of 1≦m≦n) and the m+1th light emitting layer. The first and second layers are contacted to each other. The first layer contains a substance that transports holes easily and a substance with an electron accepting property. The second layer contains a substance that transports electrons easily and a substance with an electron donating property. Molybdenum oxide is used as the substance with the electron accepting property.

Abstract translation: 本发明的发光元件在第一和第二电极之间包括n个发光层（n是自然数）。 在第m个发光层（m是1＆lt; nlE; m＆nlE; n）的自然数和第m + 1发光层之间设置第一层和第二层。 第一层和第二层彼此接触。 第一层含有容易传输孔的物质和具有电子接受性的物质。 第二层含有易于输送电子的物质和具有给电子性质的物质。 使用氧化钼作为具有电子接受性的物质。

公开(公告)号：US08872169B2

公开(公告)日：2014-10-28

申请号：US13737973

申请日：2013-01-10

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Daisuke Kumaki ,  Satoshi Seo

IPC: H01L29/08 ,  H01L35/24 ,  H01L51/00 ,  H01L33/00 ,  H01L51/50 ,  H01L33/60 ,  H01L27/32 ,  H01L51/52

CPC classification number: H01L33/0008 ,  H01L27/15 ,  H01L27/3244 ,  H01L33/00 ,  H01L33/42 ,  H01L33/60 ,  H01L51/0081 ,  H01L51/5052 ,  H01L51/506 ,  H01L51/5068 ,  H01L51/5265 ,  H01L51/5296 ,  H01L2251/558

Abstract: An object of the present invention is to provide a light emitting element having slight increase in driving voltage with accumulation of light emitting time. Another object of the invention is to provide a light emitting element having slight increase in resistance value with increase in film thickness. A light emitting element of the invention includes a first layer for generating holes, a second layer for generating electrons and a third layer comprising a light emitting substance between first and second electrodes. The first and third layers are in contact with the first and second electrodes, respectively. The second and third layers are connected to each other so as to inject electrons generated in the second layer into the third layer when applying the voltage to the light emitting element such that a potential of the second electrode is higher than that of the first electrode.

Abstract translation: 本发明的目的是提供一种随着发光时间累积而具有轻微的驱动电压增加的发光元件。 本发明的另一个目的是提供一种随着膜厚度的增加而电阻值略有增加的发光元件。 本发明的发光元件包括用于产生空穴的第一层，用于产生电子的第二层和在第一和第二电极之间包含发光物质的第三层。 第一和第三层分别与第一和第二电极接触。 第二层和第三层彼此连接，以便在将电压施加到发光元件时将第二层中产生的电子注入第三层，使得第二电极的电位高于第一电极的电位。

公开(公告)号：US20130214256A1

公开(公告)日：2013-08-22

申请号：US13731442

申请日：2012-12-31

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Daisuke Kumaki ,  Hisao Ikeda ,  Hiroko Abe ,  Satoshi Seo

IPC: H01L51/52 ,  H01L27/32

CPC classification number: H01L51/5237 ,  H01L27/3209 ,  H01L27/3241 ,  H01L27/3244 ,  H01L51/5048 ,  H01L51/506 ,  H01L51/5076 ,  H01L51/5278 ,  Y10S428/917 ,  Y10T428/24942

Abstract: A light emitting element of the invention includes n pieces of light emitting layers (n is a natural number) between first and second electrodes. A first layer and a second layer are provided between the mth light emitting layer (m is a natural number of 1≦m≦n) and the m+1th light emitting layer. The first and second layers are contacted to each other. The first layer contains a substance that transports holes easily and a substance with an electron accepting property. The second layer contains a substance that transports electrons easily and a substance with an electron donating property. Molybdenum oxide is used as the substance with the electron accepting property.

Abstract translation: 本发明的发光元件在第一和第二电极之间包括n个发光层（n是自然数）。 在第m个发光层（m是1 @ m @ n的自然数）和第m + 1个发光层之间设置第一层和第二层。 第一层和第二层彼此接触。 第一层含有容易传输孔的物质和具有电子接受性的物质。 第二层含有易于输送电子的物质和具有给电子性质的物质。 使用氧化钼作为具有电子接受性的物质。

公开(公告)号：US08723196B2

公开(公告)日：2014-05-13

申请号：US13852015

申请日：2013-03-28

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Satoshi Seo ,  Daisuke Kumaki ,  Hisao Ikeda ,  Junichiro Sakata

IPC: H01L33/00

CPC classification number: H01L27/156 ,  H01L27/322 ,  H01L27/3244 ,  H01L51/0059 ,  H01L51/0071 ,  H01L51/0081 ,  H01L51/5088 ,  H01L2251/5315 ,  H01L2251/558

Abstract: Light-emitting elements have a problem that their light-extraction efficiency is low due to scattered light or reflected light inside the light-emitting elements. The light-extraction efficiency of the light-emitting elements needs to be enhanced by a new method. According to the present invention, a light-emitting element includes a first layer generating holes, a second layer including a light-emitting layer for each emission color and a third layer generating electrons between an anode and a cathode, and the thickness of the first layer is different depending on each layer including the light-emitting layer for each emission color. A layer in which an organic compound and a metal oxide are mixed is used as the first layer, and thus, the driving voltage is not increased even when the thickness is increased, which is preferable.

Abstract translation: 发光元件具有由于发光元件内的散射光或反射光而导致其光提取效率低的问题。 需要通过新的方法来增强发光元件的光提取效率。 根据本发明，发光元件包括第一层产生孔，包括用于每种发射颜色的发光层的第二层和在阳极和阴极之间产生电子的第三层，以及第一层 层根据每个发射颜色的包含发光层的各层而不同。 使用其中混合有机化合物和金属氧化物的层作为第一层，因此即使当厚度增加时驱动电压也不会增加，这是优选的。

公开(公告)号：US09520532B2

公开(公告)日：2016-12-13

申请号：US14521695

申请日：2014-10-23

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Daisuke Kumaki ,  Satoshi Seo

IPC: H01L51/50 ,  H01L33/00 ,  H01L51/52 ,  H01L33/60 ,  H01L27/15 ,  H01L33/42 ,  H01L27/32 ,  H01L51/00

CPC classification number: H01L33/0008 ,  H01L27/15 ,  H01L27/3244 ,  H01L33/00 ,  H01L33/42 ,  H01L33/60 ,  H01L51/0081 ,  H01L51/5052 ,  H01L51/506 ,  H01L51/5068 ,  H01L51/5265 ,  H01L51/5296 ,  H01L2251/558

Abstract: An object of the present invention is to provide a light emitting element having slight increase in driving voltage with accumulation of light emitting time. Another object of the invention is to provide a light emitting element having slight increase in resistance value with increase in film thickness. A light emitting element of the invention includes a first layer for generating holes, a second layer for generating electrons and a third layer comprising a light emitting substance between first and second electrodes. The first and third layers are in contact with the first and second electrodes, respectively. The second and third layers are connected to each other so as to inject electrons generated in the second layer into the third layer when applying the voltage to the light emitting element such that a potential of the second electrode is higher than that of the first electrode.

公开(公告)号：US08916276B2

公开(公告)日：2014-12-23

申请号：US13735286

申请日：2013-01-07

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Yuji Iwaki ,  Satoshi Seo ,  Daisuke Kumaki

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

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

Abstract: 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.

Abstract translation: 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：US10886497B2

公开(公告)日：2021-01-05

申请号：US15413691

申请日：2017-01-24

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Daisuke Kumaki ,  Satoshi Seo

IPC: H01L29/08 ,  H01L35/24 ,  H01L51/00 ,  H01L51/52 ,  H01L51/50

Abstract: In the present invention, a light-emitting element operating at low driving voltage, consuming low power, emitting light with good color purity and manufactured in high yields can be obtained. A light-emitting element is disclosed with a configuration composed of a first layer containing a light-emitting material, a second layer, a third layer are formed sequentially over an anode to be interposed between the anode and a cathode in such a way that the third layer is formed to be in contact with the cathode. The second layer is made from n-type semiconductor, a mixture including that, or a mixture of an organic compound having a carrier transporting property and a material having a high electron donor property. The third layer is made from p-type semiconductor, a mixture including that, or a mixture of an organic compound having a carrier transporting property and a material having a high electron acceptor property.

公开(公告)号：US20150053962A1

公开(公告)日：2015-02-26

申请号：US14528209

申请日：2014-10-30

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Daisuke Kumaki ,  Satoshi Seo

IPC: H01L51/52 ,  H01L51/50

CPC classification number: H01L51/5234 ,  H01L27/3244 ,  H01L51/5048 ,  H01L51/5056 ,  H01L51/5076 ,  H01L51/5203 ,  H01L51/5265 ,  H01L2251/305 ,  H01L2251/306 ,  H01L2251/308 ,  H01L2251/558

Abstract: It is an object of the present invention to provide a light-emitting element having a layer containing a light-emitting material and a transparent conductive film between a pair of electrodes, in which electric erosion of the transparent conductive film and metal can be prevented, and also to provide a light-emitting device using the light-emitting element. According to one feature of the invention, a light-emitting element includes a first layer 102 containing a light-emitting material, a second layer 103 containing a material having a donor level, a third layer 104 including a transparent conductive film, and a fourth layer 105 containing a hole-transporting medium between a first electrode 101 and a second electrode 106, in which the first layer 102, the second layer 103, the third layer 104, the fourth layer 105, and the second electrode 106 are provided sequentially, in which the second electrode 106 has a layer containing metal.

Abstract translation: 本发明的目的是提供一种在一对电极之间具有包含发光材料和透明导电膜的层的发光元件，其中可以防止透明导电膜和金属的电蚀蚀， 并且还提供使用该发光元件的发光装置。 根据本发明的一个特征，发光元件包括含有发光材料的第一层102，含有施主层的材料的第二层103，包括透明导电膜的第三层104和第四层 在第一电极101和第二电极106之间包含空穴传输介质的层105，其中第一层102，第二层103，第三层104，第四层105和第二电极106依次设置， 其中第二电极106具有含有金属的层。

公开(公告)号：US08900728B2

公开(公告)日：2014-12-02

申请号：US13865363

申请日：2013-04-18

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Harue Nakashima ,  Sachiko Kawakami ,  Daisuke Kumaki

IPC: H01L51/54 ,  C07D401/12 ,  C07D401/14 ,  H01L51/50 ,  C07D409/14 ,  C09K11/06 ,  C07D417/12 ,  H01L51/00 ,  C07D209/88 ,  C07D417/14 ,  C07D409/12

CPC classification number: H01L51/0072 ,  C07D209/88 ,  C07D401/12 ,  C07D401/14 ,  C07D409/12 ,  C07D409/14 ,  C07D417/12 ,  C07D417/14 ,  C09K11/06 ,  C09K2211/1011 ,  C09K2211/1014 ,  C09K2211/1022 ,  C09K2211/1029 ,  C09K2211/1037 ,  C09K2211/1092 ,  H01L51/0059 ,  H01L51/006 ,  H01L51/0061 ,  H01L51/0081 ,  H01L51/5048 ,  H01L2251/308 ,  Y10S428/917

Abstract: It is an object of the present invention to provide a material which is excellent in a hole injecting property and a hole transporting property, and to provide a light emitting element and a light emitting device using a material which is excellent in a hole injecting property and a hole transporting property. The present invention provides a carbazole derivative represented by a general formula (1). The carbazole derivative according to the present invention is excellent in the hole injecting property. By using the carbazole derivative according to the present invention as a hole injecting material for a hole injecting layer of a light emitting element, a driving voltage can be reduced. In addition, a lower driving voltage, improvement of the luminous efficiency, a longer life time, and higher reliability can be realized by applying the material to a light emitting element or a light emitting device.

Abstract translation: 本发明的目的是提供一种空穴注入性和空穴传输性优异的材料，提供使用空穴注入性优异的材料的发光元件和发光元件， 一个空穴传输属性。 本发明提供由通式（1）表示的咔唑衍生物。 本发明的咔唑衍生物的空穴注入性优异。 通过使用本发明的咔唑衍生物作为发光元件的空穴注入层的空穴注入材料，可以降低驱动电压。 此外，通过将材料施加到发光元件或发光器件，可以实现较低的驱动电压，提高发光效率，更长的寿命和更高的可靠性。