-
31.发明公开公开(公告)号：US20240251667A1
公开(公告)日：2024-07-25
申请号：US18585268
申请日：2024-02-23
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor： Kyoko TAKEDA , Harue OSAKA , Hiroshi KADOMA , Satoshi SEO , Tsunenori SUZUKI , Naoaki HASHIMOTO
IPC: H10K85/60 , C07D209/88 , C07D405/12 , C07D493/04 , C09K11/06 , H10K50/11
CPC classification number: H10K85/636 , C07D209/88 , C07D405/12 , C07D493/04 , C09K11/06 , H10K85/633 , C09K2211/1022 , H10K50/11 , H10K85/615 , H10K85/622 , H10K85/6572 , H10K85/6574
Abstract: A novel organic compound represented by General Formula (G1) is provided. In General Formula (G1), X1 and X2 each independently represent a secondary or tertiary alkyl group having 3 to 6 carbon atoms and having a branched carbon atom which is bonded to a phenyl group. In addition, Ar1 represents a substituted or unsubstituted condensed aromatic ring skeleton having 10 to 60 carbon atoms and composed of two or more rings or a substituted or unsubstituted condensed heteroaromatic ring skeleton having 8 to 60 carbon atoms and composed of two or more rings. Furthermore, Ar2 represents a substituted or unsubstituted aryl group having 6 to 25 carbon atoms. Moreover, n represents any of 1 to 3, and in the case where n is 2 or more, two or more groups bonded to Ar1 may be identical or different.
-
公开(公告)号：US20220149308A1
公开(公告)日：2022-05-12
申请号：US17431517
申请日：2020-02-12
Applicant: Semiconductor Energy Laboratory Co., Ltd.
Inventor： Satoshi SEO , Harue OSAKA , Naoaki HASHIMOTO , Shunpei YAMAZAKI
IPC: H01L51/50
Abstract: A light-emitting device with a long lifetime is provided. In a light-emitting device that includes an EL layer between a pair of electrodes, a light-emitting layer included in the EL layer has a functional stacked-layer structure, whereby the efficiency and reliability of the light-emitting device can be increased.
-
公开(公告)号：US20200259105A1
公开(公告)日：2020-08-13
申请号：US16859056
申请日：2020-04-27
Applicant: Semiconductor Energy Laboratory Co., Ltd.
Inventor： Takeyoshi Watabe , Satoko SHITAGAKI , Kunihiko SUZUKI , Harue OSAKA , Satomi MITSUMORI , Satoshi SEO
Abstract: A light-emitting element with high emission efficiency and high reliability is provided. The light-emitting element includes a light-emitting layer containing a first organic compound, a second organic compound, and a guest material. The first organic compound has a nitrogen-containing six-membered heteroaromatic skeleton. In the light-emitting layer, the weight ratio of an organic compound having a nitrogen-containing five-membered heterocyclic skeleton with an NH group, a secondary amine skeleton with an NH group, or a primary amine skeleton with an NH group to the first organic compound is less than or equal to 0.03, or alternatively, the weight ratio of the organic compound having a nitrogen-containing five-membered heterocyclic skeleton with an NH group, a secondary amine skeleton with an NH group, or a primary amine skeleton with an NH group to the second organic compound is less than or equal to 0.01.
-
34.发明申请公开(公告)号：US20200216428A1
公开(公告)日：2020-07-09
申请号：US16636732
申请日：2018-07-30
Applicant: Semiconductor Energy Laboratory Co., Ltd.
Inventor： Kyoko Takeda , Harue OSAKA , Satoshi SEO , Tsunenori SUZUKI , Naoaki HASHIMOTO
IPC: C07D407/14 , C07D209/82 , H01L51/00
Abstract: A novel compound is provided. In addition, a light-emitting element with high emission efficiency and a long lifetime is provided. An organic compound represented by General Formula (G0), including a dibenzocarbazole skeleton and two amine skeletons. In General Formula (G0), A represents a substituted or unsubstituted dibenzocarbazole skeleton. The dibenzocarbazole skeleton and the amine skeletons may be bonded to each other through or not through an arylene group. In addition, a light-emitting element including the compound is provided.
-
35.发明申请公开(公告)号：US20190393420A1
公开(公告)日：2019-12-26
申请号：US16486181
申请日：2018-03-08
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor： Kyoko TAKEDA , Harue OSAKA , Satoshi SEO , Tsunenori SUZUKI , Naoaki HASHIMOTO , Yusuke TAKITA
IPC: H01L51/00 , C07D493/04 , C09K11/06
Abstract: A novel organic compound is provided. An organic compound that emits light with high chromaticity is provided. An organic compound that emits blue light with high chromaticity is provided. An organic compound with high emission efficiency is provided. An organic compound having an excellent hole-transport property is provided. An organic compound having high reliability is provided. An organic compound that has a naphtho[2,3-b;7,6-b′]bisbenzofuran skeleton or a naphtho[2,3-b;7,6-b′]bisbenzothiophene skeleton and has a molecular weight of less than or equal to 5000 is provided. The present inventors have found that the organic compound is a significantly effective skeleton as a luminophor of a light-emitting element. The organic compound has high emission efficiency and exhibits favorable blue light emission; thus, a light-emitting element using the organic compound can be a blue light-emitting element with high emission efficiency.
-
Patent Agency Ranking
36.发明申请公开(公告)号：US20190067614A1
公开(公告)日：2019-02-28
申请号：US16173541
申请日：2018-10-29
Applicant: Semiconductor Energy Laboratory Co., Ltd.
Inventor： Yusuke NONAKA , Satoshi SEO , Harue OSAKA , Tsunenori SUZUKI , Takeyoshi WATABE
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.
-
37.发明申请公开(公告)号：US20190036036A1
公开(公告)日：2019-01-31
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: H01L51/00 , C09K11/06 , H05B33/14 , C07D209/86 , H01L51/50
CPC classification number: H01L51/0072 , C07D209/86 , C09K11/06 , C09K2211/1007 , C09K2211/1011 , C09K2211/1018 , H01L51/0052 , H01L51/5012 , H01L51/5028 , H05B33/14
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：US20180212154A1
公开(公告)日：2018-07-26
申请号：US15934070
申请日：2018-03-23
Applicant: Semiconductor Energy Laboratory Co., Ltd.
Inventor： Shunpei Yamazaki , Satoshi SEO , Nobuharu OHSAWA , Satoko SHITAGAKI , Hideko INOUE , Hiroshi KADOMA , Harue OSAKA , Kunihiko SUZUKI , Yasuhiko TAKEMURA
IPC: H01L51/00
CPC classification number: H01L51/0059 , H01L51/0067 , H01L2251/5384 , H01L2251/552
Abstract: A light-emitting element includes a light-emitting layer including a guest, an n-type host and a p-type host between a pair of electrodes, where the difference between the energy difference between a triplet excited state and a ground state of the n-type host (or p-type host) and the energy difference between a triplet excited state and a ground state of the guest is 0.15 eV or more. Alternatively, in such a light-emitting element, the LUMO level of the n-type host is higher than the LUMO level of the guest by 0.1 eV or more, or the HOMO level of the p-type host is lower than the HOMO level of the guest by 0.1 eV or more.
-
公开(公告)号：US20170288153A1
公开(公告)日：2017-10-05
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 , Tsunenori SUZUKI , Hiromi NOWATARI , Hiroki SUZUKI , Kyoko TAKEDA
IPC: H01L51/00
CPC classification number: H01L51/0074 , C07D405/04 , C07D405/14 , C07D409/04 , C07D409/14 , H01L51/0052 , H01L51/0054 , H01L51/006 , H01L51/0072 , H01L51/0073 , H01L51/0085 , H01L51/5012 , H01L51/5056
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.
-
40.发明申请公开(公告)号：US20170253796A1
公开(公告)日：2017-09-07
申请号：US15601461
申请日：2017-05-22
Applicant: Semiconductor Energy Laboratory Co., Ltd.
Inventor： Kyoko Takeda , Harue OSAKA , Satoko SHITAGAKI , Nobuharu OHSAWA , Satoshi SEO , Hiromi SEO
CPC classification number: C09K11/06 , C09K2211/1007 , C09K2211/1011 , C09K2211/1044 , C09K2211/1088 , C09K2211/1092 , C09K2211/1096 , C09K2211/185 , H01L51/0058 , H01L51/0067 , H01L51/0085 , H01L51/5016 , H01L51/5072 , H01L2251/552
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.
-
-
-
-
-
-
-
-
-
Search Results
86
records
(took 0.033 seconds)
