公开(公告)号：US10096783B2

公开(公告)日：2018-10-09

申请号：US15652799

申请日：2017-07-18

申请人： Semiconductor Energy Laboratory Co., Ltd.

发明人： Kyoko Takeda ,  Harue Osaka ,  Yusuke Takita ,  Naoaki Hashimoto ,  Tsunenori Suzuki ,  Kunihiko Suzuki ,  Satoshi Seo

IPC分类号： C07D209/86 ,  H01L51/00 ,  C09K11/06 ,  H01L51/50

摘要： To provide a novel fluorescent organic compound (a fluorescent compound). The organic compound is a substance that emits fluorescence and an organic compound (a host material) in which TTA can occur efficiently. In the organic compound, triplet excitons, which do not contribute to light emission, can be efficiently converted into singlet excitons. The use of such an organic compound can increase emission efficiency of a light-emitting element.

公开(公告)号：US10071993B2

公开(公告)日：2018-09-11

申请号：US15264062

申请日：2016-09-13

申请人： Semiconductor Energy Laboratory Co., Ltd.

发明人： Hiroki Suzuki ,  Kyoko Takeda ,  Sachiko Kawakami ,  Tsunenori Suzuki ,  Satoshi Seo ,  Nobuharu Ohsawa

IPC分类号： C07D409/04 ,  C07D405/04 ,  C07D405/14 ,  C07D409/14 ,  H01L51/00 ,  C09K11/02 ,  H01L51/05 ,  H01L51/50

CPC分类号： C07D409/04 ,  C07D405/04 ,  C07D405/14 ,  C07D409/14 ,  C09K11/025 ,  H01L51/0052 ,  H01L51/0054 ,  H01L51/0072 ,  H01L51/0073 ,  H01L51/0074 ,  H01L51/0566 ,  H01L51/5012 ,  H01L51/5056 ,  H01L51/5072

摘要： An object is to provide a novel carbazole derivative that has an excellent carrier-transport property and can be suitably used for a transport layer or as a host material of a light-emitting element. Another object is to provide an organic semiconductor material and a light-emitting element material each using the carbazole derivative. As the carbazole derivative that can achieve the above objects, a carbazole derivative in which a carbazolyl group whose either 2- or 3-position of carbazole is substituted by the 4-position of a dibenzothiophene skeleton or a dibenzofuran skeleton is bonded to aromatic hydrocarbon that has 14 to 70 carbon atoms and includes a condensed tricyclic ring, a condensed tetracyclic ring, a condensed pentacyclic ring, a condensed hexacyclic ring, or a condensed heptacyclic ring has been able to be synthesized.

公开(公告)号：US20180159062A1

公开(公告)日：2018-06-07

申请号：US15867137

申请日：2018-01-10

申请人： Semiconductor Energy Laboratory Co., Ltd.

发明人： Satoko Shitagaki ,  Tsunenori Suzuki ,  Satoshi Seo

IPC分类号： H01L51/50

CPC分类号： H01L51/5048 ,  H01L2251/552

摘要： In a light-emitting element including an EL layer between a pair of electrodes, between an electrode functioning as an anode and a fourth layer having a light-emitting property (light-emitting layer), the EL layer includes at least a first layer having a hole-injecting property (hole-injecting layer), a second layer having a hole-transporting property (first hole-transporting layer), and a third layer having a hole-transporting property (second hole-transporting layer). The absolute value of the highest occupied molecular orbital level (HOMO level) of the second layer is larger than the absolute value of the highest occupied molecular orbital level (HOMO level) of each of the first layer and the third layer. With such a structure, the rate of transport of holes injected from the electrode functioning as an anode is reduced and emission efficiency of the light-emitting element is improved.

公开(公告)号：US20180076394A1

公开(公告)日：2018-03-15

申请号：US15700532

申请日：2017-09-11

申请人： Semiconductor Energy Laboratory Co., Ltd.

发明人： Sachiko Kawakami ,  Yasuke Takita ,  Tsunenori Suzuki ,  Satoshi Seo

IPC分类号： H01L51/00 ,  C07D307/77

CPC分类号： H01L51/0065 ,  C07C211/31 ,  C07D307/77 ,  H01L51/0061 ,  H01L51/0073 ,  H01L51/5064

摘要： A novel organic compound is provided. In particular, a novel organic compound which can improve the element characteristics of a light-emitting element is provided. A novel light-emitting element with high emission efficiency, low driving voltage, and high reliability is provided. An organic compound including an amine skeleton and a benzo[b]naphtho[1,2-d]furan skeleton is provided. A light-emitting element including the organic compound is provided.

公开(公告)号：US09917261B2

公开(公告)日：2018-03-13

申请号：US14537230

申请日：2014-11-10

申请人： Semiconductor Energy Laboratory Co., Ltd.

发明人： Hideko Inoue ,  Yui Yamada ,  Tsunenori Suzuki ,  Satoshi Seo

IPC分类号： H01L51/00 ,  F21V23/04 ,  C09K11/06 ,  C07D405/14 ,  H01L51/50

CPC分类号： H01L51/0072 ,  C07D405/14 ,  C09K11/06 ,  H01L51/0067 ,  H01L51/0073 ,  H01L51/5072

摘要： A novel organic compound is provided. Alternatively, an organic compound that can be used as an electron-transport material of a light-emitting element is provided. An organic compound in which heteroaromatic groups each including two pyridine rings are bonded to the 2- and 8-positions of dibenzofuran is provided. The organic compound is an organic compound that can be used as an electron-transport material of a light-emitting element.

公开(公告)号：US09899603B2

公开(公告)日：2018-02-20

申请号：US15446528

申请日：2017-03-01

申请人： Semiconductor Energy Laboratory Co., Ltd.

发明人： Sachiko Kawakami ,  Naoaki Hashimoto ,  Tsunenori Suzuki ,  Satoshi Seo

IPC分类号： H01L51/00 ,  C07D307/77 ,  C09K11/06 ,  H01L51/50

CPC分类号： H01L51/006 ,  C07C211/61 ,  C07D307/77 ,  C09K11/06 ,  C09K2211/1011 ,  C09K2211/1022 ,  C09K2211/1088 ,  H01L51/0054 ,  H01L51/0061 ,  H01L51/0073 ,  H01L51/5012

摘要： An organic compound that emits blue light with high color purity and has a long lifetime is provided as a novel substance. The organic compound is a fluorescent organic compound having a structure in which benzonaphthofuranylamine is bonded to the 1-position and the 6-position of a pyrene skeleton.

公开(公告)号：US09698354B2

公开(公告)日：2017-07-04

申请号：US13941827

申请日：2013-07-15

申请人： Semiconductor Energy Laboratory Co., Ltd.

发明人： Satoshi Seo ,  Tsunenori Suzuki ,  Satoko Shitagaki

IPC分类号： H01L51/50 ,  H01L51/00

CPC分类号： H01L51/5036 ,  H01L51/0052 ,  H01L51/0054 ,  H01L51/0058 ,  H01L51/006 ,  H01L51/007 ,  H01L51/0071 ,  H01L51/0072 ,  H01L51/0073 ,  H01L51/0074 ,  H01L51/0081 ,  H01L51/0085 ,  H01L51/5048 ,  H01L51/5056 ,  H01L51/5088 ,  H01L2051/0063 ,  H01L2251/552

摘要： Objects of the present invention are to provide: a light-emitting element having a long lifetime and good emission efficiency and drive voltage. One embodiment of the invention is a light-emitting element including, between an anode and a cathode, at least a stack structure in which a first layer, a second layer, and a light-emitting layer are provided in order from the anode side. The first layer includes a first organic compound and an electron-accepting compound. The second layer includes a second organic compound having a HOMO level differing from the HOMO level of the first organic compound by from −0.2 eV to +0.2 eV. The light-emitting layer includes a third organic compound having a HOMO level differing from the HOMO level of the second organic compound by from −0.2 eV to +0.2 eV and a light-emitting substance having a hole-trapping property with respect to the third organic compound.

公开(公告)号：US09540315B2

公开(公告)日：2017-01-10

申请号：US14605286

申请日：2015-01-26

申请人： Semiconductor Energy Laboratory Co., Ltd.

发明人： Harue Osaka ,  Takahiro Ushikubo ,  Nobuharu Ohsawa ,  Satoshi Seo ,  Tsunenori Suzuki

IPC分类号： H01L51/50 ,  C07C211/54 ,  C09K11/06 ,  H01L51/00 ,  H05B33/14 ,  H01L27/32 ,  H01L51/52

CPC分类号： H01L51/006 ,  C07C211/54 ,  C07C2601/14 ,  C09K11/025 ,  C09K11/06 ,  C09K2211/1007 ,  C09K2211/1011 ,  C09K2211/1014 ,  C09K2211/1029 ,  C09K2211/185 ,  H01L27/3209 ,  H01L51/0052 ,  H01L51/0058 ,  H01L51/0059 ,  H01L51/0061 ,  H01L51/0072 ,  H01L51/0085 ,  H01L51/5012 ,  H01L51/5016 ,  H01L51/5048 ,  H01L51/5056 ,  H01L51/5072 ,  H01L51/5278 ,  H05B33/14 ,  Y10S428/917

摘要： A triarylamine derivative represented by a general formula (G1) given below is provided. Note that in the formula, Ar represents either a substituted or unsubstituted phenyl group or a substituted or unsubstituted biphenyl group; α represents a substituted or unsubstituted naphthyl group; β represents either hydrogen or a substituted or unsubstituted naphthyl group; n and m each independently represent 1 or 2; and R1 to R8 each independently represent any of hydrogen, an alkyl group having 1 to 6 carbon atoms, or a phenyl group.

摘要翻译： 提供由下述通式（G1）表示的三芳基胺衍生物。 注意，在该式中，Ar表示取代或未取代的苯基或取代或未取代的联苯基; α表示取代或未取代的萘基; ＆bgr 表示氢或取代或未取代的萘基; n和m各自独立地表示1或2; R 1〜R 8各自独立地表示氢，碳原子数1〜6的烷基或苯基中的任一个。

公开(公告)号：US09537109B2

公开(公告)日：2017-01-03

申请号：US15014799

申请日：2016-02-03

申请人： Semiconductor Energy Laboratory Co., Ltd.

发明人： Hiroki Suzuki ,  Satoshi Seo ,  Sachiko Kawakami ,  Tsunenori Suzuki

IPC分类号： H01L51/00 ,  C07D209/86 ,  C09K11/02 ,  C09K11/06 ,  H01L51/50

CPC分类号： H01L51/0072 ,  C07D209/86 ,  C09K11/025 ,  C09K11/06 ,  C09K2211/1029 ,  H01L51/0052 ,  H01L51/0058 ,  H01L51/006 ,  H01L51/5012 ,  H01L51/5028

摘要： Provided is a light-emitting element which has high emission efficiency and a long lifetime and is driven at low voltage. The light-emitting element includes an EL layer between a pair of electrodes. The EL layer includes a compound which gives a first peak at a m/z of around 266.10 in a mass spectrum.

摘要翻译： 提供一种发光效率高，寿命长，低电压驱动的发光元件。 发光元件包括一对电极之间的EL层。 EL层包括在质谱中以大约266.10的m / z给出第一峰的化合物。

公开(公告)号：US09444063B2

公开(公告)日：2016-09-13

申请号：US14276621

申请日：2014-05-13

申请人： SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

发明人： Yusuke Nonaka ,  Satoshi Seo ,  Harue Osaka ,  Tsunenori Suzuki ,  Takeyoshi Watabe

IPC分类号： H01L29/08 ,  H01L35/24 ,  H01L51/00 ,  H01L27/15 ,  H01L29/26 ,  H01L31/12 ,  H01L33/00 ,  H01L51/50 ,  H01L51/52

CPC分类号： H01L51/5012 ,  H01L51/0052 ,  H01L51/0054 ,  H01L51/0058 ,  H01L51/006 ,  H01L51/0067 ,  H01L51/0085 ,  H01L51/5004 ,  H01L51/5016 ,  H01L51/5056 ,  H01L51/5278 ,  H01L2251/552

摘要： To increase emission efficiency of a fluorescent light-emitting element by efficiently utilizing a triplet exciton generated in a light-emitting layer. The light-emitting layer of the light-emitting element includes at least a host material and a guest material. The triplet exciton generated from the host material in the light-emitting layer is changed to a singlet exciton by triplet-triplet annihilation (TTA). The guest material (fluorescent dopant) is made to emit light by energy transfer from the singlet exciton. Thus, the emission efficiency of the light-emitting element is improved.

摘要翻译： 通过有效地利用在发光层中产生的三线态激子来提高荧光发光元件的发光效率。 发光元件的发光层至少包含主体材料和客体材料。 从发光层中的主体材料产生的三线态激子通过三重态三重态湮灭（TTA）改变为单线态。 客体材料（荧光掺杂剂）通过从单线态激子的能量转移而发光。 因此，发光元件的发光效率提高。