Patents by Inventor Daizou Kanda
Daizou Kanda 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: 11158811Abstract: In the organic electroluminescent device having at least an anode, a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer and a cathode in this order, the hole injection layer includes an arylamine compound of the following general formula (1) and an electron acceptor. In the formula, Ar1 to Ar4 may be the same or different, and represent a substituted or unsubstituted aromatic hydrocarbon group, a substituted or unsubstituted aromatic heterocyclic group, or a substituted or unsubstituted condensed polycyclic aromatic group.Type: GrantFiled: December 1, 2015Date of Patent: October 26, 2021Assignees: Hodogaya Chemical Co., Ltd., SFC Co., Ltd.Inventors: Shuichi Hayashi, Naoaki Kabasawa, Daizou Kanda, Shunji Mochizuki, Soon-wook Cha, Sang-woo Park, Ju-man Song, Kyung-seok Jeon
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Patent number: 10693078Abstract: An organic electroluminescent device having high efficiency, low driving voltage and a long lifetime is provided by combining various materials for an organic electroluminescent device, which are excellent, as materials for an organic electroluminescent device having high efficiency and high durability, in hole and electron injection/transport performances, electron blocking ability, stability in a thin-film state and durability, so as to allow the respective materials to effectively reveal their characteristics. In the organic electroluminescent device having at least an anode, a hole transport layer, a light emitting layer, an electron transport layer and a cathode in this order, the hole transport layer includes an arylamine compound represented by the following general formula (1), and the light emitting layer comprises an amine derivative of the following general formula (2) having a condensed ring structure.Type: GrantFiled: July 16, 2015Date of Patent: June 23, 2020Assignees: Hodogaya Chemical Co., Ltd., SFC Co., Ltd.Inventors: Shuichi Hayashi, Daizou Kanda, Soon-Wook Cha, Sang-Woo Park, Ju-Man Song, Kyung-Seok Jeon
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Patent number: 10593884Abstract: In the organic electroluminescent device having at least an anode, a hole injection layer, a first hole injection layer, a second hole injection layer, a light emitting layer, an electron transport layer and a cathode in this order, the hole injection layer includes an arylamine compound of the following general formula (1) and an electron acceptor. In the formula, Ar1 to Ar4 may be the same or different, and represent a substituted or unsubstituted aromatic hydrocarbon group, a substituted or unsubstituted aromatic heterocyclic group, or a substituted or unsubstituted condensed polycyclic aromatic group.Type: GrantFiled: January 4, 2016Date of Patent: March 17, 2020Assignee: Hodogaya Chemical Co., Ltd.Inventors: Norimasa Yokoyama, Shuichi Hayashi, Takeshi Yamamoto, Naoaki Kabasawa, Daizou Kanda, Kazunori Togashi, Shunji Mochizuki
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Patent number: 10566540Abstract: An organic electroluminescent device having high luminous efficiency, low driving voltage, and particularly a long lifetime is provided by combining various materials for an organic electroluminescent device, which have excellent hole and electron injection/transport performances, electron blocking ability, stability in a thin-film state, and durability as materials for an organic electroluminescent device having high luminous efficiency and high durability so as to allow the respective materials to effectively reveal their characteristics. In the organic electroluminescent device having at least an anode, a hole transport layer, a light emitting layer, an electron transport layer and a cathode in this order, the hole transport layer includes an arylamine compound represented by the following general formula (1), and the light emitting layer includes an amine derivative of the following general formula (2) having a condensed ring structure.Type: GrantFiled: January 29, 2016Date of Patent: February 18, 2020Assignees: Hodogaya Chemical Co., Ltd., SFC Co. Ltd.Inventors: Shuichi Hayashi, Hideyoshi Kitahara, Takeshi Yamamoto, Daizou Kanda, Naoaki Kabasawa, Soon-wook Cha, Sang-woo Park, Ju-man Song, Kyung-seok Jeon
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Patent number: 10541369Abstract: To provide an organic compound of excellent characteristics that exhibits excellent electron-injecting/transporting performance with hole blocking ability, and has high stability in the thin-film state, as material for an organic electroluminescent device having high efficiency and high durability, and to provide the organic electroluminescent device having high efficiency and high durability using the compound. An organic electroluminescent device includes a pair of electrodes, and one or more organic layers sandwiched between the pair of electrodes, wherein the compound of general formula (1) in which a substituted bipyridyl group and a pyridoindole ring structure are bonded via a phenylene group, is used as a constituent material of at least one organic layer.Type: GrantFiled: January 16, 2012Date of Patent: January 21, 2020Assignee: Hodogaya Chemical Co., Ltd.Inventors: Norimasa Yokoyama, Daizou Kanda, Shuichi Hayashi, Eiji Takahashi
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Patent number: 10497876Abstract: In the organic electroluminescent device having at least an anode, a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer and a cathode in this order, the hole injection layer includes an arylamine compound of the following general formula (1) and an electron acceptor. In the formula, Ar1 to Ar4 may be the same or different, and represent a substituted or unsubstituted aromatic hydrocarbon group, a substituted or unsubstituted aromatic heterocyclic group, or a substituted or unsubstituted condensed polycyclic aromatic group.Type: GrantFiled: December 16, 2015Date of Patent: December 3, 2019Assignees: Hodogaya Chemical Co., Ltd., SFC Co., Ltd.Inventors: Norimasa Yokoyama, Shuichi Hayashi, Takeshi Yamamoto, Naoaki Kabasawa, Daizou Kanda, Shunji Mochizuki, Soon-wook Cha, Sang-woo Park, Ju-man Song, Kyung-seok Jeon
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Patent number: 10424742Abstract: The organic EL device of the invention has, in order, an anode, a hole transport layer, a luminous layer, an electron transport layer and a cathode. The hole transport layer includes an indenoacridan derivative represented by the following general formula (1), and the luminous layer includes an N-aromatic substituted indenoindole compound and/or an N-aromatic substituted carbazole compound. In the formula, A1 is a divalent aromatic hydrocarbon group, a divalent aromatic heterocyclic group or a single bond, B is a monovalent aromatic hydrocarbon group; a monovalent aromatic heterocyclic group; or a disubstituted amino group having, as a substituent, a monovalent aromatic hydrocarbon group or a monovalent aromatic heterocyclic group; and R1 to R14 each represent a hydrogen atom or an alkyl group.Type: GrantFiled: August 6, 2015Date of Patent: September 24, 2019Assignees: HODOGAYA CHEMICAL CO., LTD., SFC CO., LTDInventors: Shuichi Hayashi, Daizou Kanda, Shunji Mochiduki, Se-Jin Lee, Oun-gyu Lee, Bong-Ki Shin
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Publication number: 20180026199Abstract: An organic electroluminescent device having high luminous efficiency, low driving voltage, and particularly a long lifetime is provided by combining various materials for an organic electroluminescent device, which have excellent hole and electron injection/transport performances, electron blocking ability, stability in a thin-film state, and durability as materials for an organic electroluminescent device having high luminous efficiency and high durability so as to allow the respective materials to effectively reveal their characteristics. In the organic electroluminescent device having at least an anode, a hole transport layer, a light emitting layer, an electron transport layer and a cathode in this order, the hole transport layer includes an arylamine compound represented by the following general formula (1), and the light emitting layer includes an amine derivative of the following general formula (2) having a condensed ring structure.Type: ApplicationFiled: January 29, 2016Publication date: January 25, 2018Inventors: Shuichi Hayashi, Hideyoshi Kitahara, Takeshi Yamamoto, Daizou Kanda, Naoaki Kabasawa, Soon-wook Cha, Sang-woo Park, Ju-man Song, Kyung-seok Jeon
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Publication number: 20180006235Abstract: In the organic electroluminescent device having at least an anode, a hole injection layer, a first hole injection layer, a second hole injection layer, a light emitting layer, an electron transport layer and a cathode in this order, the hole injection layer includes an arylamine compound of the following general formula (1) and an electron acceptor. In the formula, Ar1 to Ar4 may be the same or different, and represent a substituted or unsubstituted aromatic hydrocarbon group, a substituted or unsubstituted aromatic heterocyclic group, or a substituted or unsubstituted condensed polycyclic aromatic group.Type: ApplicationFiled: January 4, 2016Publication date: January 4, 2018Inventors: Norimasa Yokoyama, Shuichi Hayashi, Takeshi Yamamoto, Naoaki Kabasawa, Daizou Kanda, Kazunori Togashi, Shunji Mochizuki
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Publication number: 20170346015Abstract: In the organic electroluminescent device having at least an anode, a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer and a cathode in this order, the hole injection layer includes an arylamine compound of the following general formula (1) and an electron acceptor. In the formula, Ar1 to Ar4 may be the same or different, and represent a substituted or unsubstituted aromatic hydrocarbon group, a substituted or unsubstituted aromatic heterocyclic group, or a substituted or unsubstituted condensed polycyclic aromatic group.Type: ApplicationFiled: December 1, 2015Publication date: November 30, 2017Inventors: Shuichi Hayashi, Naoaki Kabasawa, Daizou Kanda, Shunji Mochizuki, Soon-wook Wook Cha, Sang- woo Park, Ju-man Song, Kyung- seok Jeon
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Publication number: 20170346009Abstract: In the organic electroluminescent device having at least an anode, a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer and a cathode in this order, the hole injection layer includes an arylamine compound of the following general formula (1) and an electron acceptor. In the formula, Ar4 to Ar4 may be the same or different, and represent a substituted or unsubstituted aromatic hydrocarbon group, a substituted or unsubstituted aromatic heterocyclic group, or a substituted or unsubstituted condensed polycyclic aromatic group.Type: ApplicationFiled: December 16, 2015Publication date: November 30, 2017Inventors: Norimasa Yokoyama, Shuichi Hayashi, Takeshi Yamamoto, Naoaki Kabasawa, Daizou Kanda, Shunji Mochizuki, Soon-wook Cha, Sang-woo Park, Ju-man Song, Kyung-seok Jeon
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Publication number: 20170271599Abstract: The organic EL device of the invention has, in order, an anode, a hole transport layer, a luminous layer, an electron transport layer and a cathode. The hole transport layer includes an indenoacridan derivative represented by the following general formula (1), and the luminous layer includes an N-aromatic substituted indenoindole compound and/or an N-aromatic substituted carbazole compound. In the formula, A1 is a divalent aromatic hydrocarbon group, a divalent aromatic heterocyclic group or a single bond, B is a monovalent aromatic hydrocarbon group; a monovalent aromatic heterocyclic group; or a disubstituted amino group having, as a substituent, a monovalent aromatic hydrocarbon group or a monovalent aromatic heterocyclic group; and R1 to R14 each represent a hydrogen atom or an alkyl group.Type: ApplicationFiled: August 6, 2015Publication date: September 21, 2017Applicants: HODOGAYA CHEMICAL CO., LTD., SFC CO., LTD.Inventors: Shuichi HAYASHI, Daizou KANDA, Shunji MOCHIDUKI, Se-Jin LEE, Oun-gyu LEE, Bong-Ki SHIN
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Patent number: 9755152Abstract: There is provided an organic compound having excellent characteristics, including excellent electron-injecting/transporting performance, hole blocking ability, and high stability in the thin-film state, for use as material of an organic electroluminescent device having high efficiency and high durability. There is also provided a high-efficient and high-durable organic electroluminescent device using the compound. The compound is represented by general formula (1) having a substituted anthracene ring structure and a pyridoindole ring structure. The organic electroluminescent device includes a pair of electrodes, and one or more organic layers sandwiched between the pair of electrodes, and the compound is used as a constituent material of at least one organic layer.Type: GrantFiled: November 25, 2014Date of Patent: September 5, 2017Assignee: Hodogaya Chemical Co., Ltd.Inventors: Norimasa Yokoyama, Shuichi Hayashi, Naoaki Kabasawa, Daizou Kanda, Shigeru Kusano
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Publication number: 20170207395Abstract: An organic electroluminescent device having high efficiency, low driving voltage and a long lifetime is provided by combining various materials for an organic electroluminescent device, which are excellent, as materials for an organic electroluminescent device having high efficiency and high durability, in hole and electron injection/transport performances, electron blocking ability, stability in a thin-film state and durability, so as to allow the respective materials to effectively reveal their characteristics. In the organic electroluminescent device having at least an anode, a hole transport layer, a light emitting layer, an electron transport layer and a cathode in this order, the hole transport layer includes an arylamine compound represented by the following general formula (1), and the light emitting layer comprises an amine derivative of the following general formula (2) having a condensed ring structure.Type: ApplicationFiled: July 16, 2015Publication date: July 20, 2017Inventors: Shuichi Hayashi, Daizou Kanda, Soon- Wook Cha, Sang- Woo Park, Ju- Man Song, Kyung- Seok Jeon
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Publication number: 20170117481Abstract: An organic electroluminescent device having high efficiency, low driving voltage and a long lifetime is provided by combining various materials for an organic electroluminescent device, which are excellent, as materials for an organic electroluminescent device having high efficiency and high durability, in hole and electron injection/transport performances, electron blocking ability, stability in a thin-film state and durability, so as to allow the respective materials to effectively reveal their characteristics. In the organic electroluminescent device having at least an anode, a hole transport layer, a light emitting layer, an electron transport layer and a cathode in this order, the hole transport layer includes an arylamine compound of the following general formula (1), and the electron transport layer includes a compound the following general formula (2) having an anthracene ring structure.Type: ApplicationFiled: June 17, 2015Publication date: April 27, 2017Inventors: Naoaki Kabasawa, Daizou Kanda, Norimasa Yokoyama, Shuichi Hayashi, Shunji Mochiduki
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Patent number: 9553272Abstract: An organic electroluminescent device comprises, between an anode and a cathode, a hole injection layer, a hole-transporting layer, a luminous layer and an electron-transporting layer, wherein the hole injection layer contains an arylamine compound (?) having three or more triphenylamine skeletons, the hole-transporting layer contains an arylamine compound (?) having two triphenylamine skeletons, and the electron-transporting layer contains an electron-transporting compound having an anthracene ring skeleton and a pyridoindole ring skeleton. The organic EL device emits light highly efficiently, drives on a low voltage, and features excellent durability and long life.Type: GrantFiled: April 17, 2012Date of Patent: January 24, 2017Assignee: HODOGAYA CHEMICAL CO., LTD.Inventors: Norimasa Yokoyama, Eiji Takahashi, Shuichi Hayashi, Daizou Kanda, Hiroshi Ookuma
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Publication number: 20160155955Abstract: Dicarbazole derivatives represented by the following general formula (1), wherein X is an oxygen atom or a sulfur atom, Ar1 and Ar2 are aromatic hydrocarbon groups or aromatic heterocyclic groups, R1 to R12 are hydrogen atoms, deuterium atoms, fluorine atoms, chlorine atoms, cyano groups, nitro groups, alkyl groups having 1 to 6 carbon atoms, cycloalkyl groups having 5 to 10 carbon atoms, alkenyl groups having 2 to 6 carbon atoms, alkyloxy groups having 1 to 6 carbon atoms, cycloalkyloxy groups having 5 to 10 carbon atoms, aromatic hydrocarbon groups, aromatic heterocyclic groups, aryloxy groups or disubstituted amino groups having aromatic hydrocarbon groups or aromatic heterocyclic groups as substituents bonded to the nitrogen atom.Type: ApplicationFiled: June 9, 2014Publication date: June 2, 2016Applicant: HODOGAYA CHEMICAL CO., LTD.Inventors: Norimasa YOKOYAMA, Daizou KANDA, Shuichi HAYASHI
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Publication number: 20160126464Abstract: An organic electroluminescent (EL) device having high efficiency, low driving voltage and a long lifetime is provided by combining various materials for an organic EL device, which are excellent, as materials for an organic EL device having high efficiency and high durability, in hole and electron injection/transport performances, electron blocking ability, stability in a thin-film state and durability, so as to allow the respective materials to effectively reveal their characteristics. In the organic EL device having at least an anode, a hole injection layer, a first hole transport layer, a second hole transport layer, a light emitting layer, an electron transport layer and a cathode in this order, the second hole transport layer includes an arylamine compound represented by the following general formula (1).Type: ApplicationFiled: May 19, 2014Publication date: May 5, 2016Inventors: Norimasa Yokoyama, Shuichi Hayashi, Daizou Kanda
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Publication number: 20150249218Abstract: An organic compound with excellent characteristics excelling in hole injecting and transporting performance and having an electron-blocking ability, high stability in a thin film state and excellent heat resistance is provided as a material for an organic electroluminescent device of high efficiency and high durability, and the organic electroluminescent device of high luminous efficiency and high durability is provided using this compound. The compound of a general formula (1) having an indenoacridan ring structure is used as a constituent material of at least one organic layer in the organic electroluminescent device that includes a pair of electrodes and one or more organic layers sandwiched between the pair of electrodes.Type: ApplicationFiled: August 27, 2013Publication date: September 3, 2015Applicant: HODOGAYA CHEMICAL CO., LTD.Inventors: Norimasa Yokoyama, Daizou Kanda, Shuichi Hayashi
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Publication number: 20150155496Abstract: There is provided an organic compound having excellent characteristics, including excellent electron-injecting/transporting performance, hole blocking ability, and high stability in the thin-film state, for use as material of an organic electroluminescent device having high efficiency and high durability. There is also provided a high-efficient and high-durable organic electroluminescent device using the compound. The compound is represented by general formula (1) having a substituted anthracene ring structure and a pyridoindole ring structure. The organic electroluminescent device includes a pair of electrodes, and one or more organic layers sandwiched between the pair of electrodes, and the compound is used as a constituent material of at least one organic layer.Type: ApplicationFiled: November 25, 2014Publication date: June 4, 2015Inventors: Norimasa Yokoyama, Shuichi Hayashi, Naoaki Kabasawa, Daizou Kanda, Shigeru Kusano