Patents by Inventor Takushi Shiomi
Takushi Shiomi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11944009Abstract: A compound is represented by one of formulae (11) to (13). R1 to R4 each independently represent a group represented by a formula (1-1), a group represented by a formula (2-1), a group represented by a formula (2-2) or the like. At least one of R1 to R4 is the group represented by the formula (1-1) or the like. At least one of R1 to R4 is the group represented by the formula (2-1), (2-2) or the like. For instance, in the formula (1-1), R11 represents a substituent, and R101 to R110 each independently represent a hydrogen atom or a substituent. For instance, in the formulae (2-1) to (2-2), R161 to R168 and R171 to R180 each independently represent a hydrogen atom or a substituent.Type: GrantFiled: September 20, 2019Date of Patent: March 26, 2024Assignee: IDEMITSU KOSAN CO., LTD.Inventors: Keiichi Yasukawa, Shota Sawano, Keiji Okinaka, Toshinari Ogiwara, Takushi Shiomi
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Publication number: 20230422608Abstract: An organic electroluminescence device includes an emitting layer between an anode and a cathode, and a first layer between the anode and the emitting layer, in which the emitting layer contains a delayed fluorescent compound M1 represented by a formula (1), the first layer contains a compound M4 represented by a formula (4), and the compound M4 satisfies formulae (a) and (b), ?H(M4)?1.0×10?3 cm2/Vs??Formula (a): S1(M4)?3.15 eV??Formula (b): where: ?H(M4) represents hole mobility of the compound M4; and S1(M4) represents a lowest singlet energy of the compound M4.Type: ApplicationFiled: March 30, 2023Publication date: December 28, 2023Applicant: IDEMITSU KOSAN CO.,LTD.Inventors: Hisato MATSUMOTO, Yukitoshi JINDE, Takushi SHIOMI
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Publication number: 20230371373Abstract: An organic electroluminescence device includes an anode, a cathode, and an emitting layer provided between the anode and the cathode, in which the emitting layer contains a compound M3 represented by a formula (11), (12) or (13) and a delayed fluorescent compound M2, the compound M3 and the compound M2 are different in structure, and a singlet energy S1(M3) of the compound M3 and a singlet energy S1(M2) of the compound M2 satisfy a relationship of a numerical formula (Numerical Formula 1) below. In the formulae (11), (12) and (13), one of carbon atoms banded to R25, R27 and R28 is bonded to *1. One of carbon atoms and the like bonded to R31 to R38 and the like is bonded to *.Type: ApplicationFiled: October 4, 2021Publication date: November 16, 2023Applicant: ldemitsu Kosan Co.,Ltd.Inventors: Takushi SHIOMI, Hisato MATSUMOTO
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Publication number: 20230301188Abstract: An organic electroluminescence device includes: an anode; a cathode; an emitting layer provided between the anode and the cathode; and a first layer provided between the emitting layer and the cathode, in which the first layer contains a first compound having at least one deuterium atom, and the emitting layer contains a delayed fluorescent compound.Type: ApplicationFiled: July 27, 2021Publication date: September 21, 2023Applicant: IDEMITSU KOSAN CO., LTD.Inventors: Takushi SHIOMI, Hisato MATSUMOTO, Toshinari OGIWARA
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Patent number: 11765972Abstract: A compound represented by the following formula (1), wherein X1 is O or S, and two or more of Y1, Y2 and Y3 are N, provided that the case where one or both of —Ar1-Ar2 and —Ar3-Ar4 is a p-terphenyl-3-yl group is excluded.Type: GrantFiled: February 20, 2019Date of Patent: September 19, 2023Assignee: IDEMITSU KOSAN CO., LTD.Inventors: Yoshinao Shirasaki, Tetsuya Masuda, Takushi Shiomi, Masatoshi Saito, Kei Yoshida, Masato Nakamura
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Patent number: 11691983Abstract: Specifically substituted benzofuro- and benzothienoquinolines and their use in electronic devices, especially electroluminescent devices. When used as charge transport material, charge blocker material and/or host material in electroluminescent devices, the specifically substituted benzofuro- and benzothienoquinolines may provide improved efficiency, stability, manufacturability, or spectral characteristics of electroluminescent devices and reduced driving voltage of electroluminescent devices.Type: GrantFiled: June 13, 2017Date of Patent: July 4, 2023Assignee: IDEMITSU KOSAN CO., LTD.Inventors: Yuichi Nishimae, Michelle Groarke, Heinz Wolleb, Annemarie Wolleb, Yuki Nakano, Hideaki Nagashima, Tasuku Haketa, Masahiro Kawamura, Takushi Shiomi
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Publication number: 20230050369Abstract: An organic electroluminescence device includes: an anode; a cathode; and an emitting layer provided between the anode and the cathode, in which the emitting layer contains a delayed fluorescent compound M2 and a compound M3 represented by a formula (3) and a singlet energy S1(M2) of the compound M2 and a singlet energy S1(M3) of the compound M3 satisfy a relationship of a numerical formula (Numerical Formula 1) below, S1(M3)>S1(M2) . . . (Numerical Formula 1). In the formula (3), A3 is a group represented by a formula (3a) or the like.Type: ApplicationFiled: December 8, 2020Publication date: February 16, 2023Applicant: IDEMITSU KOSAN CO.,LTD.Inventors: Takushi SHIOMI, Hiromi NAKANO, Toshinari OGIWARA, Hisato MATSUMOTO
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Publication number: 20230048761Abstract: An organic electroluminescence device includes an anode, an emitting layer, and a cathode in this order. The emitting layer comprises a delayed fluorescent compound M2 and a compound M3 having at least one deuterium atom, and the compound M3 is not a compound having a partial structure represented by a formula (1C) or (2C). S1(M2) of the compound M2 and S1(M3) of the compound M3 satisfy a relationship of S1(M3)>S1(M2). In the formulae (1C) and (2C), Y41 to Y48 are each independently a N atom, CR, or a C atom bonded to another atom or the like in the compound M3, where each R is independently a H atom or a substituent, at least one of Y41 to Y48 is a N atom, and at least one of Y41 to Y48 is a C atom bonded to another atom or the like in the compound M3.Type: ApplicationFiled: January 22, 2021Publication date: February 16, 2023Applicant: IDEMITSU KOSAN CO.,LTD.Inventors: Takushi SHIOMI, Toshinari OGIWARA, Hiromi NAKANO
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Publication number: 20230033529Abstract: An organic EL device includes: an anode, a cathode, and an emitting layer, in which the emitting layer contains a first compound of a formula (1), a second compound of a formula (2), and a third compound that exhibits delayed fluorescence, and singlet energies S1 of the first compound, the second compound, and the third compound satisfy Numerical Formula 1 and Numerical Formula 2. In the formula (1), A represents a group of a formula (a1) or the like, L represents a linking group or the like, and B represents an aryl group or the like. The first compound of the formula (1) has no carbonyl group. In the formula (2), Y21 to Y26 each independently represent an N atom, CRA, or the like. RA represents a substituent, a group of a formula (2A), or the like.Type: ApplicationFiled: June 11, 2021Publication date: February 2, 2023Applicant: IDEMITSU KOSAN CO.,LTD.Inventors: Takushi SHIOMI, Hisato MATSUMOTO, Hiromi NAKANO, Toshinari OGIWARA
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Publication number: 20230011206Abstract: A compound is represented by a formula (1). n is 2 to 4, m is 1 to 4, q is 0 to 3, and m+n+q=6; CN is a cyano group; D1 is a group represented by a formula (2), (3) or (3X), the plurality of D1 are the same; and Rx is a hydrogen atom or substituent. R1 to R8 are each independently a hydrogen atom or substituent. R31 to R38 and R41 to R48 are each independently a hydrogen atom or substituent; p, px and py are each independently 1 to 4; A to C are each independently a cyclic structure represented by a formula (131) or (132). R19 and R20 are each independently a hydrogen atom or substituent. X1 is a sulfur atom or the like, and * represents a bonding position with a carbon atom of a benzene ring in the formula (1).Type: ApplicationFiled: October 24, 2019Publication date: January 12, 2023Applicant: IDEMITSU KOSAN CO.,LTD.Inventors: Keiichi YASUKAWA, Shota SAWANO, Hiromi NAKANO, Takushi SHIOMI
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Publication number: 20220388991Abstract: A compound is represented by a formula (1) below. D is a group represented by a formula (11), (12) or (13) below; at least one D is a group represented by the formula (12) or (13); at least one R is a substituent; and a sum of the number of R serving as a substituent and the number of a group represented by the formula (12) or (13) is 3 or 4.Type: ApplicationFiled: September 30, 2020Publication date: December 8, 2022Applicant: IDEMITSU KOSAN CO.,LTD.Inventors: Shota SAWANO, Keiichi YASUKAWA, Takushi SHIOMI, Kazuki TERADA
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Publication number: 20220380387Abstract: An organic electroluminescence device includes an anode, a cathode, and an emitting layer disposed between the anode and the cathode. The emitting layer comprises a delayed fluorescent compound M2 having at least one deuterium atom and a compound M3 having at least one deuterium atom. A singlet energy S1(M2) of the compound M2 and a singlet energy S1(M3) of the compound M3 satisfy the relationship S1(M3)>S1(M2).Type: ApplicationFiled: January 22, 2021Publication date: December 1, 2022Applicant: IDEMITSU KOSAN CO.,LTD.Inventors: Takushi SHIOMI, Keiichi YASUKAWA, Hiromi NAKANO, Toshinari OGIWARA
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Patent number: 11482681Abstract: A compound is represented by one of formulae (11) to (13). R1 to R4 each independently represent a group represented by a formula (1-1) or the like, or a group represented by a formula (2-1), a group represented by a formula (2-2) or the like. At least one of R1 to R4 is the group represented by the formula (1-1) or the like. At least one of R1 to R4 is the group represented by the formula (2-1), (2-2) or the like. For instance, X1 represents an oxygen atom, a sulfur atom, or CR151R152, R101 to R110 and R151 and R152 each independently representing a hydrogen atom or a substituent. For instance, R161 to R168 and R171 and R180 each independently represent a hydrogen atom or a substituent.Type: GrantFiled: July 24, 2019Date of Patent: October 25, 2022Assignee: IDEMITSU KOSAN CO., LTD.Inventors: Keiichi Yasukawa, Shota Sawano, Keiji Okinaka, Toshinari Ogiwara, Takushi Shiomi
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Publication number: 20220263030Abstract: An organic-EL device includes an emitting-layer, first-layer adjacent to the emitting-layer near the anode, and second-layer adjacent to the emitting-layer near the cathode. The emitting-layer contains first, second and third compounds. The first-layer contains a compound of formula-(A). The second-layer contains a compound of formula-(B). The first, second and third compounds are a fluorescent compound of formula-(1), delayed-fluorescent compound of formula-(2), and compound of formula-(3), respectively. Singlet energies S1 of the first to third compounds satisfy S1(M3)>S1(M2)>S1(M1). In the formula-(A), Ra1-Ra5 etc. each represent a substituent etc. In the formula-(B), X1-X3 each represent N atom etc, Ar1 and Ar2 each represent a group of formula-(1B) etc. A represents the group of the formula-(1B). In the formula-(1B), HAr is of formula-(2B), a is 1 to 5, and L1 is a linking group etc. In the formula-(2B), X11-X18 each represent N atom etc, and Y1 represent O, S, or N atom etc.Type: ApplicationFiled: July 20, 2020Publication date: August 18, 2022Applicants: IDEMITSU KOSAN CO.,LTD., TORAY INDUSTRIES, INC.Inventors: Hiromi NAKANO, Hisato MATSUMOTO, Takushi SHIOMI, Toshinari OGIWARA, Keiji OKINAKA, Kazunari KAWAMOTO, Takashi TOKUDA, Kazumasa NAGAO
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Publication number: 20220238815Abstract: An organic electroluminescence device includes: an anode; a cathode; an emitting layer provided between the anode and the cathode, in which the emitting layer contains a delayed fluorescent compound M2 and a compound M3 represented by a formula (3), and a singlet energy S1(M2) of the compound M2 and a singlet energy S1(M3) of the compound M3 satisfy the relationship S1(M3)>S1(M2). In the formula (3), A30 is a group represented by a formula (3a) or the like.Type: ApplicationFiled: May 19, 2020Publication date: July 28, 2022Applicant: IDEMITSU KOSAN CO.,LTD.Inventors: Takushi SHIOMI, Hiromi NAKANO
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Publication number: 20220231227Abstract: An organic EL device includes an emitting layer, a first layer adjacent to an anode-side of the emitting layer, and a second layer adjacent to a cathode-side thereof. The emitting layer contains first to third compounds. The first and second layers contain compounds of Formulae (1) and (2), respectively. The first and second compounds exhibits fluorescence and delayed fluorescence, respectively. Singlet energies S1 of the first to third compounds satisfy S1(M3)>S1(M2)>S1(M1). In Formula (1), Ra1-Ra5, Rb1-Rb5 and Rc1-Rc5 are each a substituent, etc. In Formula (2), X1-X3 are each nitrogen atom, etc, Ar1-Ar2 are each a group of Formula (2A) or aryl group, etc, A is a group of Formula (2A) in which HAr is of Formula (2B), a is 1 to 5, L1 is a linking group, etc.Type: ApplicationFiled: May 25, 2020Publication date: July 21, 2022Applicant: IDEMITSU KOSAN CO.,LTD.Inventors: Hiromi NAKANO, Hisato MATSUMOTO, Takushi SHIOMI, Toshinari OGIWARA, Keiji OKINAKA
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Publication number: 20220223798Abstract: An organic electroluminescence device includes an anode, a cathode, and an emitting layer provided between the anode and the cathode, in which the emitting layer contains a delayed fluorescent compound M2 represented by a formula (2) and a compound M3 represented by a formula (3), and a singlet energy Si(M2) of the compound M2 and a singlet energy Si(M3) of the compound M3 satisfy a relationship of a numerical formula (Numerical Formula 1).Type: ApplicationFiled: December 16, 2021Publication date: July 14, 2022Applicant: IDEMITSU KOSAN CO.,LTD.Inventors: Takushi SHIOMI, Hisato MATSUMOTO, Yukitoshi JINDE, Kengo KISHINO, Kazuki TERADA, Keiichi YASUKAWA, Toshinari OGIWARA
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Patent number: 11289661Abstract: A compound of formula (I), a material for an organic electroluminescence device comprising at least one compound of formula (I); an organic electroluminescence device which comprises an organic thin film layer between a cathode and an anode, wherein the organic thin film layer comprises one or more layers and comprises a light emitting layer, and at least one layer of the organic thin film layer comprises at least one compound of formula (I); an electronic equipment comprising the organic electroluminescence device; and a process for preparing the compound of formula (I).Type: GrantFiled: December 28, 2017Date of Patent: March 29, 2022Assignee: IDEMITSU KOSAN CO., LTD.Inventors: Michelle Groarke, Takushi Shiomi, Masahiro Kawamura, Hideaki Nagashima
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Patent number: 11279709Abstract: Specifically substituted aza-dibenzofurans and aza-dibenzothiophenes of formula (I) and their use in electronic devices, especially electroluminescent devices. When used as charge transport material, charge blocker material and/or host material in electroluminescent devices, the specifically substituted aza-dibenzofurans and aza-dibenzothiophenes may provide improved efficiency, stability, manufacturability, or spectral characteristics of electroluminescent devices and reduced driving voltage of electroluminescent devices. In formula (I) Y is S or O; one of X1-X8 is N; another X1-X8 is C-L(R9)—[X9X10X11]Ring; and the remaining X1-X8 are CR1-CR8 wherein R1-R8 are independently H, alkyl, alkenyl, aryl, etc.Type: GrantFiled: September 4, 2017Date of Patent: March 22, 2022Assignee: IDEMITSU KOSAN CO., LTD.Inventors: Annemarie Wolleb, Heinz Wolleb, Hideaki Nagashima, Oliver Dosenbach, Takushi Shiomi
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Publication number: 20220081450Abstract: An organic EL device includes an anode, a cathode, and an emitting layer interposed between the anode and the cathode, in which the emitting layer includes a delayed fluorescent compound M2 and a compound M3 represented by a formula (100), and a singlet energy S1(M2) of the compound M2 and a singlet energy S1(M3) of the compound M3 satisfy a numerical formula (Numerical Formula 1). In the formula (100), X1 is an oxygen atom or a sulfur atom, C1 is a carbon atom, R11 to R18, R2, R31, R32, R34, R35, R4 and R45 to R48 are each independently a hydrogen atom, substituent or the like, n is 1, 2, or 3. When L1 is a single bond, n is 1, k is 1, 2, or 3, m is 2, 3, or 4, k+m=5, and L1 is a single bond or linking group.Type: ApplicationFiled: December 11, 2019Publication date: March 17, 2022Applicant: IDEMITSU KOSAN CO.,LTD.Inventors: Takushi SHIOMI, Hiromi NAKANO