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公开(公告)号：US20230210005A1
公开(公告)日：2023-06-29
申请号：US18116481
申请日：2023-03-02
Applicant: Semiconductor Energy Laboratory Co., Ltd.
Inventor： Hideko Inoue , Miki Kanamoto , Hiromi Seo , Satoshi Seo , Tatsuyoshi Takahashi , Tomoka Nakagawa
IPC: H10K85/60 , C07D491/048
CPC classification number: H10K85/6576 , C07D491/048 , H10K85/615 , H10K85/657 , H10K85/6572 , H10K85/6574 , H10K50/11
Abstract: 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：US11088332B2
公开(公告)日：2021-08-10
申请号：US16809951
申请日：2020-03-05
Applicant: Semiconductor Energy Laboratory Co., Ltd.
Inventor： Miki Kanamoto , Hideko Inoue , Tatsuyoshi Takahashi , Hiromitsu Kido , Satoshi Seo
Abstract: A compound includes a benzofuropyrimidine skeleton or a benzothienopyrimidine skeleton, a first substituent, and a second substituent. Each of the first substituent and the second substituent includes a furan skeleton, a thiophene skeleton, or a pyrrole skeleton. The first substituent is bonded to a pyrimidine ring included in the benzofuropyrimidine skeleton or a pyrimidine ring included in the benzothienopyrimidine skeleton. The second substituent is bonded to a benzene ring included in the benzofuropyrimidine skeleton or a benzene ring included in the benzothienopyrimidine skeleton. The light-emitting element includes the compound.
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公开(公告)号：US20210013421A1
公开(公告)日：2021-01-14
申请号：US17010095
申请日：2020-09-02
Applicant: Semiconductor Energy Laboratory Co., Ltd.
Inventor： Hideko Inoue , Tomoka HARA , Yasushi KITANO , Hiromi SEO , Tatsuyoshi TAKAHASHI , Satoshi SEO
IPC: H01L51/00 , C07D239/26 , C07D251/24 , C09K11/06
Abstract: Provided is a novel heterocyclic compound, a novel heterocyclic compound that can be used in a light-emitting element, or a highly reliable light-emitting device, electronic device, and lighting device in each of which the light-emitting element using the novel heterocyclic compound is used. One embodiment of the present invention is a heterocyclic compound represented by General Formula (G1). In General Formula (G1), each of A1 and A2 independently represents nitrogen or carbon bonded to hydrogen, and at least one of A1 and A2 represents nitrogen; Ar represents a substituted or unsubstituted arylene group having 6 to 18 carbon atoms; B represents a substituted or unsubstituted fluorenyl group; and R1 represents hydrogen, an alkyl group having 1 to 6 carbon atoms, or an aryl group having 6 to 13 carbon atoms.
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4.发明申请公开(公告)号：US20200321544A1
公开(公告)日：2020-10-08
申请号：US16906552
申请日：2020-06-19
Applicant: Semiconductor Energy Laboratory Co., Ltd.
Inventor： Hideko Inoue , Tomoya YAMAGUCHI , Hiromi SEO , Satoshi SEO , Kunihiko SUZUKI , Miki KANAMOTO
Abstract: 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：US10573829B2
公开(公告)日：2020-02-25
申请号：US15984825
申请日：2018-05-21
Applicant: Semiconductor Energy Laboratory Co., Ltd.
Inventor： Satoko Shitagaki , Satoshi Seo , Nobuharu Ohsawa , Hideko Inoue , Kunihiko Suzuki
IPC: H01L51/00 , C07D209/86 , C07D239/26 , C07D241/12 , C07D333/76 , C07D409/10 , C07D471/04 , C07F15/00 , H01L51/50 , C09K11/02 , C09K11/06
Abstract: A light-emitting element having high external quantum efficiency is provided. A light-emitting element having a long lifetime is provided. A light-emitting element is provided which includes a light-emitting layer containing a phosphorescent compound, a first organic compound, and a second organic compound between a pair of electrodes, in which a combination of the first organic compound and the second organic compound forms an exciplex (excited complex). The light-emitting element transfers energy by utilizing an overlap between the emission spectrum of the exciplex and the absorption spectrum of the phosphorescent compound and thus has high energy transfer efficiency. Therefore, a light-emitting element having high external quantum efficiency can be obtained.
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Patent Agency Ranking
公开(公告)号：US10476009B2
公开(公告)日：2019-11-12
申请号：US15043792
申请日：2016-02-15
Applicant: Semiconductor Energy Laboratory Co., Ltd.
Inventor： Yui Yamada , Hideko Inoue , Tsunenori Suzuki , Satoshi Seo
IPC: H01L51/00 , C07D401/14 , H01L51/50
Abstract: A novel organic compound that can be used as an electron-injection material or an electron-transport material of a light-emitting element is provided. An organic compound with which a display device having less crosstalk can be obtained is provided. A light-emitting device, a display device, and an electronic device each having less crosstalk are provided. An organic compound including two or three benzo[h]quinazoline rings is provided. In the organic compound, two or three benzo[h]quinazoline rings are preferably included in the substituent including an aromatic ring or a heteroaromatic ring and having 3 to 30 carbon atoms. When two or three benzo[h]quinazoline rings are included in a substituent particularly including a heteroaromatic ring and having 3 to 30 carbon atoms, a high electron-transport property can be obtained.
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公开(公告)号：US10403839B2
公开(公告)日：2019-09-03
申请号：US15339016
申请日：2016-10-31
Applicant: Semiconductor Energy Laboratory Co., Ltd.
Inventor： Satoko Shitagaki , Satoshi Seo , Nobuharu Ohsawa , Hideko Inoue , Masahiro Takahashi , Kunihiko Suzuki
Abstract: Provided is a light-emitting element with high external quantum efficiency, or a light-emitting element with a long lifetime. The light-emitting element includes, between a pair of electrodes, a light-emitting layer including a guest material and a host material, in which an emission spectrum of the host material overlaps with an absorption spectrum of the guest material, and phosphorescence is emitted by conversion of an excitation energy of the host material into an excitation energy of the guest material. By using the overlap between the emission spectrum of the host material and the absorption spectrum of the guest material, the energy smoothly transfers from the host material to the guest material, so that the energy transfer efficiency of the light-emitting element is high. Accordingly, a light-emitting element with high external quantum efficiency can be achieved.
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公开(公告)号：US10115912B2
公开(公告)日：2018-10-30
申请号：US15137460
申请日：2016-04-25
Applicant: Semiconductor Energy Laboratory Co., Ltd.
Inventor： Hideko Inoue , Miki Kanamoto , Satoshi Seo
Abstract: An object is to provide a novel organometallic complex. Another object is to provide an organometallic complex that can exhibit yellow to blue phosphorescence. A platinum complex with a tetracoordinate ligand including a phenothiazine skeleton or a phenoxazine skeleton is provided. In the ligand, nitrogen at the 10-position and carbon at the 2-position of the phenothiazine skeleton or the phenoxazine skeleton have a pyridyl group and a phenoxy group, respectively. A five-membered heteroaromatic residue is present at the 3-position of the phenoxy group. The five-membered heteroaromatic residue has two or three nitrogen atoms in its skeleton. Carbon at the 1-position of the phenothiazine skeleton or the phenoxazine skeleton and carbon at the 2-position of the phenoxy group are bonded to platinum, and nitrogen of the pyridyl group and nitrogen or carbene carbon of the five-membered heteroaromatic residue are coordinated to platinum.
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9.发明申请公开(公告)号：US20180269409A1
公开(公告)日：2018-09-20
申请号：US15981060
申请日：2018-05-16
Applicant: Semiconductor Energy Laboratory Co., Ltd.
Inventor： Hideko Inoue , Tomoya YAMAGUCHI , Hiromi SEO , Tatsuyoshi TAKAHASHI , Satoshi SEO
CPC classification number: H01L51/0085 , C07F15/0033
Abstract: 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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10.发明授权公开(公告)号：US09985221B2
公开(公告)日：2018-05-29
申请号：US14807426
申请日：2015-07-23
Applicant: Semiconductor Energy Laboratory Co., Ltd.
Inventor： Satoshi Seo , Takao Hamada , Tatsuyoshi Takahashi , Yasushi Kitano , Hiroki Suzuki , Hideko Inoue
IPC: H01L51/50 , H01L51/00 , C07D403/14
CPC classification number: H01L51/0072 , C07D403/14 , H01L51/006 , H01L51/0061 , H01L51/0085 , Y02P20/582
Abstract: To provide a light-emitting element with an improved reliability, a light-emitting element with a high current efficiency (or a high quantum efficiency), and a novel dibenzo[f,h]quinoxaline derivative that is favorably used in a light-emitting element which is one embodiment of the present invention. A light-emitting element includes an EL layer between an anode and a cathode. The EL layer includes a light-emitting layer; the light-emitting layer contains a first organic compound having an electron-transport property and a hole-transport property, a second organic compound having a hole-transport property, and a light-emitting substance; the combination of the first organic compound and the second organic compound forms an exciplex; the HOMO level of the first organic compound is lower than the HOMO level of the second organic compound; and a difference between the HOMO level of the first organic compound and the HOMO level of the second organic compound is less than or equal to 0.4 eV.
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