公开(公告)号：US20200119276A1

公开(公告)日：2020-04-16

申请号：US16699991

申请日：2019-12-02

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Harue OSAKA ,  Satoko SHITAGAKI ,  Tsunenori SUZUKI ,  Nobuharu OHSAWA ,  Sachiko KAWAKAMI ,  Satoshi SEO

IPC: H01L51/00 ,  C07C209/10 ,  C07C211/54 ,  C09B57/00 ,  H05B33/20 ,  H05B33/14

Abstract: An object is to provide a light-emitting element having high light-emission efficiency by provision of a novel fluorene derivative as represented by General Formula (G1) below In the formula, R1 to R8 independently represent any of a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted phenyl group, or a substituted or unsubstituted biphenyl group. Further, α1 to α4 independently represent any of a substituted or unsubstituted arylene group having 6 to 12 carbon atoms. Furthermore, Ar1 and Ar2 independently represent any of an aryl group having 6 to 13 carbon atoms in a ring and Ar3 represents an alkyl group having 1 to 6 carbon atoms or a substituted or unsubstituted aryl group having 6 to 12 carbon atoms. J, k, m, and n each independently represent 0 or 1.

公开(公告)号：US20200028095A1

公开(公告)日：2020-01-23

申请号：US16483304

申请日：2018-01-26

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Hiroshi KADOMA ,  Hiroki SUZUKI ,  Yusuke TAKITA ,  Tsunenori SUZUKI ,  Satoshi SEO

IPC: H01L51/00 ,  C07D209/86 ,  C09K11/06

Abstract: A novel organic compound is provided. That is, a novel organic compound that is effective in improving element characteristics and reliability is provided.The organic compound includes an anthracene skeleton and a carbazole skeleton, and is represented by the following general formula (G1). (In the formula, Ar represents a substituted or unsubstituted arylene group having 6 to 13 carbon atoms, and when the arylene group has substituents, the substituents may be bonded to each other to form a ring. Furthermore, Cz represents a substituted or unsubstituted carbazole skeleton. Furthermore, each of R1 to R9 and R11 to R17 independently represents any of hydrogen, a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 6 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 13 carbon atoms. Furthermore, at least one of the following pairs may form a fused ring: R12 and R13; R14 and R15; R15 and R16; or R16 and R17.

公开(公告)号：US20190341551A1

公开(公告)日：2019-11-07

申请号：US16513846

申请日：2019-07-17

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Kaori OGITA ,  Sachiko KAWAKAMI ,  Tsunenori SUZUKI ,  Naoaki HASHIMOTO ,  Yusuke TAKITA ,  Satoshi SEO

IPC: H01L51/00 ,  C09K11/06 ,  C07D307/77 ,  C09K11/02

Abstract: In an organic compound, two groups each including a benzonaphthofuranylamine skeleton are bonded to a central skeleton including a fluorene skeleton. The organic compound emits favorable blue light. Furthermore, the organic compound has a high hole-transport property.

公开(公告)号：US20190256529A1

公开(公告)日：2019-08-22

申请号：US16299431

申请日：2019-03-12

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Hiroki Suzuki ,  Tsunenori SUZUKI ,  Satoshi SEO

IPC: C07F5/02 ,  C07D333/76 ,  C09K11/06 ,  H01L51/00 ,  C07D307/91 ,  H05B33/10

Abstract: Provided are a heterocyclic compound which emits blue light and is represented by General Formula (G1) below, and a light-emitting element, a light-emitting device, an electronic device and a lighting device which are formed using the heterocyclic compound represented by General Formula (G1) below. The use of the heterocyclic compound represented by General Formula (G1) makes it possible to provide a light-emitting element which has high emission efficiency, and also a light-emitting device, an electronic device and a lighting device which have reduced power consumption.

公开(公告)号：US20180190905A1

公开(公告)日：2018-07-05

申请号：US15906809

申请日：2018-02-27

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Hiroki Suzuki ,  Satoshi SEO ,  Sachiko KAWAKAMI ,  Tsunenori SUZUKI

IPC: H01L51/00 ,  C07D209/88 ,  C09K11/02 ,  C09K11/06 ,  H01L51/50

CPC classification number: H01L51/006 ,  C07D209/88 ,  C09K11/025 ,  C09K11/06 ,  C09K2211/1007 ,  C09K2211/1011 ,  C09K2211/1014 ,  C09K2211/1022 ,  C09K2211/1029 ,  H01L51/0052 ,  H01L51/0054 ,  H01L51/0059 ,  H01L51/0061 ,  H01L51/0072 ,  H01L51/5004 ,  H01L51/5036 ,  H01L51/504 ,  H01L51/5278 ,  H01L2251/552 ,  Y02B20/181

Abstract: A highly efficient light-emitting element capable of providing a plurality of emission colors is provided, which does not easily deteriorate and can minimize a decrease in external quantum efficiency even when a light-emitting layer has a stacked structure. A light-emitting device, an electronic device, and a lighting device which have low power consumption and long lifetime are provided. A light-emitting element includes a plurality of light-emitting layers stacked between a pair of electrodes. The light-emitting layers each contain a host material and a guest material. The guest materials of the light-emitting layers are substances which have different HOMO levels but have substantially the same LUMO levels and emit light of different colors. A light-emitting device, an electronic device, and a lighting device are fabricated using the light-emitting element.

公开(公告)号：US20170162798A1

公开(公告)日：2017-06-08

申请号：US15436272

申请日：2017-02-17

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Harue OSAKA ,  Takako TAKASU ,  Hiroshi KADOMA ,  Yuko KAWATA ,  Satoko SHITAGAKI ,  Hiromi NOWATARI ,  Tsunenori SUZUKI ,  Nobuharu OHSAWA ,  Satoshi SEO

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

CPC classification number: H01L51/0072 ,  C07D209/86 ,  C09K11/06 ,  C09K2211/1007 ,  C09K2211/1011 ,  C09K2211/1029 ,  H01L51/0052 ,  H01L51/0054 ,  H01L51/0058 ,  H01L51/5004 ,  H01L51/5012 ,  H01L51/5016 ,  H01L51/5056 ,  H01L51/5088 ,  H01L2251/303 ,  H01L2251/5376 ,  H01L2251/552 ,  Y10S428/917

Abstract: A novel substance with which an increase in life and emission efficiency of a light-emitting element can be achieved is provided. A carbazole compound having a structure represented by General Formula (G1) is provided. Note that a substituent which makes the HOMO level and the LUMO level of a compound in which a bond of the substituent is substituted with hydrogen deep and shallow, respectively is used as each of substituents in General Formula (G1) (R1, R2, Ar3, and α3). Further, a substituent which makes the band gap (Bg) and the T1 level of a compound in which a bond of the substituent is substituted with hydrogen wide and high is used as each of the substituents in General Formula (G1) (R1, R2, Ar3, and α3).

公开(公告)号：US20170155072A1

公开(公告)日：2017-06-01

申请号：US15362932

申请日：2016-11-29

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Naoaki HASHIMOTO ,  Tsunenori SUZUKI ,  Satoshi SEO ,  Hiromi SEO ,  Hiromitsu KIDO

IPC: H01L51/50

CPC classification number: H01L51/5016 ,  H01L51/0052 ,  H01L51/0054 ,  H01L51/0058 ,  H01L51/006 ,  H01L51/0067 ,  H01L51/0072 ,  H01L51/0074 ,  H01L51/5056 ,  H01L51/5072

Abstract: A light-emitting element that includes a fluorescent material and has a high emission efficiency is provided. A light-emitting element in which a delayed fluorescence component due to TTA accounts for a high proportion of emissive components is provided. A novel light-emitting device with a high emission efficiency and a low power consumption is provided. A light-emitting element includes an anode, a cathode, and an EL layer. The EL layer includes a light-emitting layer including a host material and an electron-transport layer including a first material in contact with the light-emitting layer. The LUMO level of the first material is lower than that of the host material. The proportion of a delayed fluorescence component due to TTA is greater than or equal to 10 percent of the light emission from the EL layer. The proportion of the delayed fluorescence component due to TTA may be greater than or equal to 15 percent of the light emission.

公开(公告)号：US20170125704A1

公开(公告)日：2017-05-04

申请号：US15335104

申请日：2016-10-26

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Hiroki Suzuki ,  Sachiko KAWAKAMI ,  Satoshi SEO ,  Tsunenori SUZUKI ,  Naoaki Hashimoto ,  Yusuke TAKITA

IPC: H01L51/00 ,  C09K11/02 ,  C07D209/80

CPC classification number: H01L51/0072 ,  C07D209/80 ,  C09K11/025 ,  H01L51/0052 ,  H01L51/5012 ,  H01L51/5056 ,  H01L51/5072 ,  Y02P20/582

Abstract: Provided is a novel organic compound or a light-emitting element material. The organic compound includes an aromatic hydrocarbon group having 6 to 100 carbon atoms in the 5-position of benzo[a]carbazole and an aromatic hydrocarbon group having 6 to 30 carbon atoms in the 11-position thereof. The light-emitting element material includes the organic compound.

公开(公告)号：US20170040535A1

公开(公告)日：2017-02-09

申请号：US15223244

申请日：2016-07-29

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Kaori OGITA ,  Sachiko KAWAKAMI ,  Tsunenori SUZUKI ,  Naoaki HASHIMOTO ,  Yusuke TAKITA ,  Satoshi SEO

IPC: H01L51/00 ,  C09K11/02 ,  C09K11/06 ,  C07D307/77

CPC classification number: H01L51/006 ,  C07D307/77 ,  C09K11/02 ,  C09K11/06 ,  C09K2211/1007 ,  C09K2211/1011 ,  C09K2211/1014 ,  C09K2211/1022 ,  C09K2211/1088 ,  H01L51/0052 ,  H01L51/0054 ,  H01L51/0061 ,  H01L51/0073 ,  H01L51/5012 ,  H01L51/5056 ,  H01L51/5064 ,  Y02P20/582

Abstract: In an organic compound, two groups each including a benzonaphthofuranylamine skeleton are bonded to a central skeleton including a fluorene skeleton. The organic compound emits favorable blue light. Furthermore, the organic compound has a high hole-transport property.

Abstract translation: 在有机化合物中，将包含苯并萘并异戊二醛骨架的两个基团键合到包含芴骨架的中心骨架上。 有机化合物发出有利的蓝光。 此外，有机化合物具有高的空穴传输性。

公开(公告)号：US20160380223A1

公开(公告)日：2016-12-29

申请号：US15258622

申请日：2016-09-07

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Yusuke Nonaka ,  Satoshi SEO ,  Harue OSAKA ,  Tsunenori SUZUKI ,  Takeyoshi WATABE

IPC: H01L51/50 ,  H01L51/52

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

Abstract: 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.

Abstract translation: 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。