公开(公告)号：US11773321B2

公开(公告)日：2023-10-03

申请号：US17320621

申请日：2021-05-14

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Kyoko Takeda ,  Harue Osaka ,  Satoko Shitagaki ,  Nobuharu Ohsawa ,  Satoshi Seo ,  Hiromi Seo

IPC: C09K11/06 ,  H10K85/60 ,  H10K50/11 ,  H10K50/16 ,  H10K85/30 ,  H10K101/10 ,  H10K101/30

CPC classification number: C09K11/06 ,  H10K85/626 ,  H10K85/654 ,  C09K2211/1007 ,  C09K2211/1011 ,  C09K2211/1044 ,  C09K2211/1088 ,  C09K2211/1092 ,  C09K2211/1096 ,  C09K2211/185 ,  H10K50/11 ,  H10K50/16 ,  H10K85/342 ,  H10K2101/10 ,  H10K2101/30

Abstract: A light-emitting element includes an EL layer between a pair of electrodes. The EL layer contains a first compound and a second compound. The first compound is a phosphorescent iridium metal complex having a LUMO level of greater than or equal to −3.5 eV and less than or equal to −2.5 eV, and the second compound is an organic compound having a pyrimidine skeleton. The light-emitting element includes an EL layer between a pair of electrodes. The EL layer contains a first compound and a second compound. The first compound is a phosphorescent iridium metal complex having a diazine skeleton, and the second compound is an organic compound having a pyrimidine skeleton.

公开(公告)号：US20220194954A1

公开(公告)日：2022-06-23

申请号：US17574752

申请日：2022-01-13

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Kyoko Takeda ,  Harue Osaka ,  Satoshi Seo ,  Tsunenori Suzuki ,  Naoaki Hashimoto ,  Yusuke Takita

IPC: C07D491/048 ,  C07D495/00 ,  H01L51/00

Abstract: A novel organic compound is provided. Alternatively, an organic compound that exhibits light emission with favorable chromaticity is provided. Alternatively, an organic compound that exhibits blue light emission with favorable chromaticity is provided. Alternatively, an organic compound with favorable emission efficiency is provided. Alternatively, an organic compound having a high carrier-transport property is provided. Alternatively, an organic compound with favorable reliability is provided. An organic compound including at least one amino group in which any one of a substituted or unsubstituted dibenzofuranyl group, a substituted or unsubstituted dibenzothiophenyl group, and a substituted or unsubstituted carbazolyl group is boneded to any one of a substituted or unsubstituted naphthobisbenzofuran skeleton, a substituted or unsubstituted naphthobisbenzothiophene skeleton, and a substituted or unsubstituted naphthobenzofuranobenzothiophene skeleton is provided.

公开(公告)号：US20210277305A1

公开(公告)日：2021-09-09

申请号：US17320621

申请日：2021-05-14

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Kyoko Takeda ,  Harue Osaka ,  Satoko Shitagaki ,  Nobuharu Ohsawa ,  Satoshi Seo ,  Hiromi Seo

IPC: C09K11/06 ,  H01L51/00

Abstract: A light-emitting element includes an EL layer between a pair of electrodes. The EL layer contains a first compound and a second compound. The first compound is a phosphorescent iridium metal complex having a LUMO level of greater than or equal to −3.5 eV and less than or equal to −2.5 eV, and the second compound is an organic compound having a pyrimidine skeleton. The light-emitting element includes an EL layer between a pair of electrodes. The EL layer contains a first compound and a second compound. The first compound is a phosphorescent iridium metal complex having a diazine skeleton, and the second compound is an organic compound having a pyrimidine skeleton.

公开(公告)号：US20210151694A1

公开(公告)日：2021-05-20

申请号：US17137620

申请日：2020-12-30

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Hiromi Nowatari ,  Satoshi Seo ,  Harue Osaka ,  Takako Takasu

IPC: H01L51/00 ,  C09K11/06 ,  H05B33/14

Abstract: A composite material including an organic compound and an inorganic compound and having a high carrier-transport property is provided. A composite material having a high carrier-injection property to an organic compound is provided. A composite material in which light absorption due to charge transfer interaction is unlikely to occur is provided. A light-emitting element having high emission efficiency is provided by including the composite material. A light-emitting element having a low drive voltage is provided. A light-emitting element having a long lifetime is provided. A composite material including a heterocyclic compound having a dibenzothiophene skeleton or a dibenzofuran skeleton and an inorganic compound exhibiting an electron-accepting property with respect to the heterocyclic compound is provided.

公开(公告)号：US10833282B2

公开(公告)日：2020-11-10

申请号：US15623799

申请日：2017-06-15

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Satoshi Seo ,  Harue Osaka ,  Sachiko Kawakami ,  Nobuharu Ohsawa ,  Tsuneori Suzuki ,  Hiromi Nowatari ,  Hiroki Suzuki ,  Kyoko Takeda

IPC: H01L51/00 ,  C07D405/04 ,  C07D405/14 ,  C07D409/04 ,  C07D409/14 ,  H01L51/50

Abstract: An object is to provide a light-emitting element with high emission efficiency which includes a novel carbazole derivative that has a wide energy gap and can be used for a transport layer or a host material in a light-emitting element. A carbazole derivative in which the 4-position of dibenzothiophene or dibenzofuran is bonded to the 2- or 3-position of carbazole has been able to be provided by use of the carbazole derivative. Further, a light-emitting element having high emission efficiency has been able to be provided by use of the carbazole derivative.

公开(公告)号：US10559762B2

公开(公告)日：2020-02-11

申请号：US16151659

申请日：2018-10-04

Applicant: Semiconductor Energy Laboratory Co., Ltd.

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

IPC: C07D209/86 ,  H01L51/00 ,  H05B33/14 ,  C09K11/06 ,  H01L51/50

Abstract: 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：US10439150B2

公开(公告)日：2019-10-08

申请号：US15350822

申请日：2016-11-14

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Tomonori Nakayama ,  Takako Takasu ,  Satoko Shitagaki ,  Harue Osaka ,  Toshiki Hamada

IPC: H01L51/00 ,  C09K11/06 ,  H05B33/14 ,  C07D487/14 ,  C09K11/02 ,  H01L51/50

Abstract: A light-emitting element emitting phosphorescence and having high emission efficiency, in which a property of injecting holes to a light-emitting layer is increased, is provided. The light-emitting layer of the light-emitting element includes a first organic compound represented by the following general formula (G1) and a second organic compound which is a phosphorescent compound. The difference between the HOMO level of the first organic compound and the HOMO level of the second organic compound is lower than or equal to 0.3 eV.

公开(公告)号：US10121972B2

公开(公告)日：2018-11-06

申请号：US15819231

申请日：2017-11-21

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Kaori Ogita ,  Hiromi Nowatari ,  Harue Osaka ,  Takahiro Ushikubo ,  Satoshi Seo ,  Takako Takasu

IPC: H01L51/54 ,  C09K11/06 ,  H01L51/00 ,  H05B33/14 ,  C07F15/00

Abstract: A composite material which includes an organic compound and an inorganic compound and has a high carrier-transport property is provided. A composite material having a good property of carrier injection into an organic compound is provided. A composite material in which light absorption due to charge-transfer interaction is unlikely to occur is provided. A composite material having a high visible-light-transmitting property is provided. A composite material including a hydrocarbon compound and an inorganic compound exhibiting an electron-accepting property with respect to the hydrocarbon compound is provided. The hydrocarbon compound has a substituent bonded to a naphthalene skeleton, a phenanthrene skeleton, or a triphenylene skeleton and has a molecular weight of 350 to 2000, and the substituent has one or more rings selected from a benzene ring, a naphthalene ring, a phenanthrene ring, and a triphenylene ring.

公开(公告)号：US09882138B2

公开(公告)日：2018-01-30

申请号：US13860055

申请日：2013-04-10

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Harue Osaka ,  Kaori Ogita ,  Nobuharu Ohsawa ,  Hiromi Seo ,  Satoshi Seo

IPC: H01L51/00 ,  C07D209/86 ,  C09K11/06 ,  H05B33/14 ,  H01L51/50

CPC classification number: H01L51/0052 ,  C07D209/86 ,  C09K11/06 ,  C09K2211/1007 ,  C09K2211/1011 ,  C09K2211/1029 ,  H01L51/0068 ,  H01L51/0072 ,  H01L51/0085 ,  H01L51/5056 ,  H01L2251/308 ,  H05B33/14

Abstract: A novel organic compound with which the emission characteristics, emission efficiency, and reliability of a light-emitting element can be improved; a light-emitting element including the organic compound; and a light-emitting device, an electronic device, and a lighting device each including the light-emitting element. The light-emitting element includes a hole-transport layer and a light-emitting layer between a pair of electrodes. At least one of the hole-transport layer and the light-emitting layer includes an organic compound having a skeleton represented by General Formula (G0).

公开(公告)号：US09859516B2

公开(公告)日：2018-01-02

申请号：US14459847

申请日：2014-08-14

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Shunpei Yamazaki ,  Kunihiko Suzuki ,  Harue Osaka ,  Masahiro Takahashi

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

CPC classification number: H01L51/5012 ,  H01L51/006 ,  H01L51/0072 ,  H01L51/5016 ,  H01L51/506 ,  H01L51/5203 ,  H01L2251/558

Abstract: A light-emitting element which at least includes a monomolecular layer including a luminescent center material with a fluorescent light-emitting property, and a monomolecular layer including a host material with a carrier (electron or hole)-transport property and a band gap larger than a band gap (note that a band gap refers to the energy difference between a HOMO level and a LUMO level) of the luminescent center material, between a pair of electrodes, in which the monomolecular layer including the host material and the monomolecular layer including the luminescent center material share the same interface, is provided.