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公开(公告)号：EP4261909A1
公开(公告)日：2023-10-18
申请号：EP21903465.9
申请日：2021-12-09
发明人： KITAHARA, Ikumi , HAYASHI, Kentaro , OGAWA, Junya , UEDA, Tokiko
IPC分类号： H01L51/50 , C07D487/04 , C09K11/06 , H05B33/10
摘要： To provide an organic electroluminescent device (organic EL device) that is driven at a low voltage and that has high efficiency and lifetime characteristics. The organic EL device includes a light-emitting layer between an anode and a cathode opposed to each other, in which the light-emitting layer contains a first host selected from an indolocarbazole compound having a triphenylene ring-containing group with which an N-position of an indolocarbazole ring is directly or indirectly substituted, a second host selected from a biscarbazole compound having a structure in which two carbazole rings are linked at a carbon position, and a light-emitting dopant material.
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2.发明授权
公开(公告)号：EP3125325B8
公开(公告)日：2019-06-12
申请号：EP15769967.9
申请日：2015-02-26
发明人： OGAWA, Junya , KAI, Takahiro , UEDA, Tokiko , TADA, Masashi , KOMORI, Masaki , YAMAMOTO, Toshihiro
IPC分类号： H01L51/50 , C07D519/00 , C07F5/02 , C09K11/06
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公开(公告)号：EP4276925A1
公开(公告)日：2023-11-15
申请号：EP21917713.6
申请日：2021-12-24
摘要： To provide a practically useful organic EL device which is driven at a low voltage and which has high efficiency and lifetime characteristics. The organic EL device includes one or more light-emitting layers between an anode and a cathode opposite to each other, in which at least one of the light-emitting layers contains a first host selected from a biscarbazole compound represented by the following general formula (1) and substituted with at least one triphenylene group, a second host selected from an indolocarbazole compound to which a nitrogen-containing 6-membered ring is bound, and a light-emitting dopant material, where m and n represent the number of repetitions, and m + n ≥ 1 is satisfied.
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4.发明公开
公开(公告)号：EP4261910A1
公开(公告)日：2023-10-18
申请号：EP21903466.7
申请日：2021-12-09
发明人： KITAHARA, Ikumi , HAYASHI, Kentaro , OGAWA, Junya , UEDA, Tokiko
IPC分类号： H01L51/50 , C07D487/04 , C09K11/06
摘要： To provide a compound for an organic EL device which provides an organic EL device having a low driving voltage and also high efficiency and extended lifetime characteristics, and an organic EL device using the compound. The compound for an organic EL device is a compound having an indolocarbazole skeleton represented by the following general formula (1):
wherein a ring A is a benzene ring, a ring B is represented by formula (1b), Tp represents a triphenylene group, L represents an aromatic hydrocarbon group having 6 to 18 carbon atoms, X represents N or C-H and at least one thereof represents N, and n represents an integer of 1 to 3.-
公开(公告)号：EP4084105A1
公开(公告)日：2022-11-02
申请号：EP20904408.0
申请日：2020-12-11
摘要： To provide an organic electroluminescent device having high efficiency while having a driving voltage. This organic electroluminescent device includes an anode, an organic layer and a cathode stacked on a substrate, at least one layer of the organic layer is a light-emitting layer containing a first host, a second host and a light-emitting dopant material, the first host is selected from a compound represented by the following general formula (1), and the second host is selected from a biscarbazole compound binding at a position other than the N-position, an indolocarbazole compound, or a carbazole compound in which a plurality of carbazole rings bind at the N-position. In the formula, a ring A is represented by formula (1b) or (1c), X represents NR, S, O, or CR 2 , and at least one Y represents N.
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公开(公告)号：EP3960835A1
公开(公告)日：2022-03-02
申请号：EP20795178.1
申请日：2020-04-17
IPC分类号： C09K11/06 , C07D209/86 , C07D487/04 , H05B33/10 , H01L51/50
摘要： Provided is an organic EL device having a low drive voltage, high efficiency, and high drive stability, and a material for an organic electroluminescent device suitable for the organic EL device. This material for an organic EL device includes: an indolocarbazole compound represented by General Formula (1).
In addition, provided is an organic electroluminescent device in which this material for an organic electroluminescent device is used as a first host and carbazole compounds are used as second hosts.
Here, a ring A is a heterocyclic ring represented by Formula (1a), L 1 to L 3 are a direct bond, an aromatic hydrocarbon group or an aromatic heterocyclic group, B 1 to B 3 represent a direct bond or a biphenyldiyl group represented by Formula (1b), and at least one of B 1 to B 3 is a biphenyldiyl group.-
公开(公告)号：EP4130193A1
公开(公告)日：2023-02-08
申请号：EP21780339.4
申请日：2021-03-18
发明人： HAYASHI, Kentaro , OGAWA, Junya , IKENAGA, Yuji
摘要： To provide a practically useful organic electroluminescent device which is improved in luminous efficiency and at the same time, sufficiently secures the stability during driving. An organic electroluminescent device, wherein a light-emitting layer includes two host materials different from each other, and a dopant material, one of the host materials is a compound represented by general formula (1) and the other of the host materials is a compound represented by general formula (2). A ring A is a heterocycle represented by formula (1a), X represents N or C-Ar', Y represents O, S, N-Ar 3 , or C-Ar 4 Ar 5 , and any one of Z 1 to Z 4 represents a carbon atom binding to a 6-membered ring containing X and the others and Z 5 to Z 8 each represent C-Ar' or N. Ar, Ar' and Ar 1 to Ar 5 each represent, for example, hydrogen, or an alkyl group having 1 to 20 carbon atoms. A ring B is a heterocycle represented by formula (2a), and Ar 6 and Ar 7 each represent, for example, hydrogen, or an alkyl group having 1 to 20 carbon atoms.
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公开(公告)号：EP4261908A1
公开(公告)日：2023-10-18
申请号：EP21903464.2
申请日：2021-12-09
发明人： KITAHARA, Ikumi , HAYASHI, Kentaro , OGAWA, Junya , UEDA, Tokiko
IPC分类号： H01L51/50 , C07D487/04 , C09K11/06 , H05B33/10
摘要： To provide a practically useful organic EL device having a low voltage, high efficiency and lifetime characteristics. An organic EL device including a light-emitting layer between an anode and a cathode opposite to each other, in which the light-emitting layer contains a first host selected from a compound represented by the following general formula (1), a second host selected from a compound represented by the following general formula (2), and a light-emitting dopant material.
In the general formula (1), a ring A is an aromatic ring represented by formula (1a), a ring B is a heterocycle represented by formula (1b), Tp represents a triphenylene group, L represents an aromatic hydrocarbon group having 6 to 18 carbon atoms, and X represents N or C-H. In the general formula (2), a ring C represents an aromatic ring represented by formula (2a) and a ring D represents a heterocycle represented by formula (2b).-
公开(公告)号：EP4084107A1
公开(公告)日：2022-11-02
申请号：EP20907185.1
申请日：2020-12-10
发明人： HAYASHI, Kentaro , OGAWA, Junya , IKENAGA, Yuji
摘要： To provide an organic electroluminescent device realizing high efficiency and low voltage characteristics. A light-emitting layer including compounds of (1) and (2) and a dopant is included. X represents N or CR 3 , wherein at least one X represents N. R 1 represents (1b), R 2 represents (1c), and R 3 represents an alkyl group or the like. Y represents O, S, NR 4 , or CR 5 R 6 , R 4 to R 6 each represent an alkyl group or the like, and one of R 7 to R 14 binds to a ring in (1). * represents a binding position to a ring in (1), and rings C and D are each an aromatic ring fused to an adjacent ring. R 15 , R 16 and R 17 have the same meaning as R 3 (a and b represent the number of substitutions) . R 19 has the same meaning as R 4 , and R 20 to R 27 each represent CR 3 , CR 28 or N and at least one thereof represents CR 28 , and R 28 represents formula (2b). Z represents O, S, NR 37 , or CR 38 R 39 , R 37 to R 39 each has the same meaning as R 4 , and one of R 29 to R 36 binds to a ring in (2) and the others represent CR 3 or N.
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公开(公告)号：EP4039680A1
公开(公告)日：2022-08-10
申请号：EP20870973.3
申请日：2020-09-16
发明人： OGAWA, Junya , KAI, Takahiro , TADA, Masashi , YOSHIDA, Kazunari
IPC分类号： C07D401/14 , C09K11/06 , C07D209/86 , H05B33/10 , H01L51/50
摘要： To provide an organic electroluminescent device having high efficiency and high driving stability while having a low driving voltage. The organic electroluminescent device has one or more light-emitting layers between an anode and a cathode opposed to each other, wherein at least one of the light-emitting layers is a light-emitting layer composed of a vapor deposition layer containing a first host, a second host and a light-emitting dopant material; the first host is selected from oligopyridine compounds represented by the general formula (1); and the second host is selected from carbazole compounds having two or more carbazole rings, indolocarbazole compounds having an indolocarbazole ring or compounds having a carbazole ring and an indolocarbazole ring.
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