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公开(公告)号：US11276824B2
公开(公告)日：2022-03-15
申请号：US16291710
申请日：2019-03-04
发明人： Miki Kanamoto , Takeyoshi Watabe , Hideko Inoue , Satoshi Seo , Satomi Mitsumori , Tatsuyoshi Takahashi
摘要： Provided is a novel compound or a light-emitting element with high emission efficiency. The provided novel compound includes a bicarbazole skeleton and a benzofuropyrimidine skeleton or a benzothienopyrimidine skeleton. The provided light-emitting element includes the compound.
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公开(公告)号：US20210257565A1
公开(公告)日：2021-08-19
申请号：US17241695
申请日：2021-04-27
发明人： Hideko Inoue , Tomoya YAMAGUCHI , Hiromi SEO , Satoshi SEO , Kunihiko SUZUKI , Miki KANAMOTO
摘要： As a novel substance having a novel skeleton, an organometallic complex with high emission efficiency which achieves improved color purity by a reduction of half width of an emission spectrum is provided. One embodiment of the present invention is an organometallic complex in which a β-diketone and a six-membered heteroaromatic ring including two or more nitrogen atoms inclusive of a nitrogen atom that is a coordinating atom are ligands. In General Formula (G1), X represents a substituted or unsubstituted six-membered heteroaromatic ring including two or more nitrogen atoms inclusive of a nitrogen atom that is a coordinating atom. Further, R1 to R4 each represent a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms.
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公开(公告)号：US20210226146A1
公开(公告)日：2021-07-22
申请号：US17221969
申请日：2021-04-05
IPC分类号： H01L51/50 , C09K11/06 , H01L51/00 , H05B33/14 , C07D409/10
摘要： A light-emitting element having high external quantum efficiency is provided. A light-emitting element having low drive voltage is provided. Provided is a light-emitting element which includes a light-emitting layer containing a phosphorescent compound, a first organic compound, and a second organic compound between a pair of electrodes. A combination of the first organic compound and the second organic compound forms an exciplex (excited complex). An emission spectrum of the exciplex overlaps with an absorption band located on the longest wavelength side of an absorption spectrum of the phosphorescent compound. A peak wavelength of the emission spectrum of the exciplex is longer than or equal to a peak wavelength of the absorption band located on the longest wavelength side of the absorption spectrum of the phosphorescent compound.
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公开(公告)号：US10930852B2
公开(公告)日：2021-02-23
申请号：US16704461
申请日：2019-12-05
发明人： Shunpei Yamazaki , Satoshi Seo , Nobuharu Ohsawa , Satoko Shitagaki , Hideko Inoue , Hiroshi Kadoma , Harue Osaka , Kunihiko Suzuki , Yasuhiko Takemura
IPC分类号： H01L51/00
摘要： 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.
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5.发明授权公开(公告)号：US10431752B2
公开(公告)日：2019-10-01
申请号：US15981060
申请日：2018-05-16
摘要： An organometallic iridium complex that has high emission efficiency and a long lifetime and emits deep red light (emission wavelength: around 700 nm) is provided. The organometallic iridium complex has a ligand that is represented by General Formula (G0) and has at least a dimethyl phenyl group and a quinoxaline skeleton. In the formula, R1 to R3 separately represent an alkyl group having 1 to 6 carbon atoms, a phenyl group, or a phenyl group having an alkyl group having 1 to 6 carbon atoms as a substituent.
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公开(公告)号：US20190173038A1
公开(公告)日：2019-06-06
申请号：US16271945
申请日：2019-02-11
IPC分类号： H01L51/50 , C09K11/06 , H01L51/00 , C07D409/10 , H05B33/14
摘要： A light-emitting element having high external quantum efficiency is provided. A light-emitting element having low drive voltage is provided. Provided is a light-emitting element which includes a light-emitting layer containing a phosphorescent compound, a first organic compound, and a second organic compound between a pair of electrodes. A combination of the first organic compound and the second organic compound forms an exciplex (excited complex). An emission spectrum of the exciplex overlaps with an absorption band located on the longest wavelength side of an absorption spectrum of the phosphorescent compound. A peak wavelength of the emission spectrum of the exciplex is longer than or equal to a peak wavelength of the absorption band located on the longest wavelength side of the absorption spectrum of the phosphorescent compound.
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公开(公告)号：US20190036041A1
公开(公告)日：2019-01-31
申请号：US16136590
申请日：2018-09-20
发明人： Hideko Inoue , Tomoya Yamaguchi , Satoshi Seo , Yui Yamada
摘要： A high-purity organometallic iridium complex is provided. The organometallic iridium complex includes iridium and a plurality of ligands cyclometallated to the iridium. Each of the plurality of ligands includes a heteroaromatic ring having a coordinatable nitrogen atom. In LC analysis of the organometallic iridium complex, an impurity which has a monochlorinated ligand among the plurality of ligands is 0.1% or less by quantitating using peak area count with a PDA detector.
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公开(公告)号：US10193086B2
公开(公告)日：2019-01-29
申请号：US15890899
申请日：2018-02-07
发明人： Hideko Inoue , Miki Kanamoto , Hiromi Seo , Satoshi Seo , Tatsuyoshi Takahashi , Tomoka Nakagawa
IPC分类号： H01L51/54 , C09K11/06 , H01L51/00 , C07D491/048 , H01L51/50
摘要： A light-emitting element having high emission efficiency is provided. A light-emitting element having a low driving voltage is provided. A novel compound which can be used for a transport layer or as a host material or a light-emitting material of a light-emitting element is provided. A novel compound with a benzofuropyrimidine skeleton is provided. Also provided is a light-emitting element which includes the compound with the benzofuropyrimidine skeleton between a pair of electrodes.
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公开(公告)号：US10103341B2
公开(公告)日：2018-10-16
申请号：US14678467
申请日：2015-04-03
发明人： Hideko Inoue , Satoshi Seo , Nobuharu Ohsawa
摘要： An organometallic complex having a structure represented by the following general formula (G1) is provided. (In the formula, A represents an aromatic hydrocarbon group having 6 to 25 carbon atoms. Further, Z represents any one of hydrogen, an alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, or an aryl group having 6 to 25 carbon atoms. In addition, Ar1 represents an aryl group having 6 to 25 carbon atoms. R1 represents any one of hydrogen, an alkyl group having 1 to 4 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms. Further, M is a central metal and represents an element belonging to Group 9 or Group 10.)
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10.发明授权公开(公告)号：US09978960B2
公开(公告)日：2018-05-22
申请号：US14300695
申请日：2014-06-10
CPC分类号： H01L51/0085 , C07F15/0033
摘要： An organometallic iridium complex that has high emission efficiency and a long lifetime and emits deep red light (emission wavelength: around 700 nm) is provided. The organometallic iridium complex has a ligand that is represented by General Formula (G0) and has at least a dimethyl phenyl group and a quinoxaline skeleton. In the formula, R1 to R3 separately represent an alkyl group having 1 to 6 carbon atoms, a phenyl group, or a phenyl group having an alkyl group having 1 to 6 carbon atoms as a substituent.
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