Patents by Inventor Shuichi Hayashi
Shuichi Hayashi 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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Publication number: 20170317291Abstract: The present invention provides an organic EL device having at least an anode, a hole injection layer, a first hole transport layer, a second hole transport layer, a luminous layer, an electron transport layer, and a cathode in order of description. The second hole transport layer includes an arylamine compound having a specific structure, and the electron transport layer includes a pyrimidine derivative having a specific structure. The organic EL device of the present invention has a high efficiency, a low driving voltage, and a longer life.Type: ApplicationFiled: November 12, 2015Publication date: November 2, 2017Applicant: HODOGAYA CHEMICAL CO., LTD.Inventors: Shuichi HAYASHI, Daizo KANDA, Kazunori TOGASHI
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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: 20170186967Abstract: According to the present invention, there are provided a pyrimidine derivative represented by a general formula (1) indicated below, and an organic electroluminescent device comprising a pair of electrodes, and at least one organic layer sandwiched therebetween, wherein the pyrimidine derivative is used as a constituent material for the at least one organic layer. The pyrimidine derivative of the present invention is a material for a high efficiency, high durability organic electroluminescent device, is excellent in electron injection/transport performance, has hole blocking capability, and excels in characteristics.Type: ApplicationFiled: June 4, 2015Publication date: June 29, 2017Applicant: HODOGAYA CHEMICAL CO., LTD.Inventors: Shuichi HAYASHI, Hideyoshi KITAHARA, Naoaki KABASAWA, Sung Keum CHOI, Si In KIM, Yoo Na SHIN, Ji Yung KIM
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Publication number: 20170179398Abstract: The organic EL device of the present invention has an anode, a hole transport layer, a luminous layer, an electron transport layer, and a cathode in this order, and the hole transport layer contains an arylamine compound represented by the following general formula (1): where Ar1 to Ar4 each represent a monovalent aromatic hydrocarbon group or a monovalent aromatic heterocyclic group.Type: ApplicationFiled: July 8, 2015Publication date: June 22, 2017Applicant: Hodogaya Chemical Co., Ltd.Inventors: Norimasa YOKOYAMA, Takeshi YAMAMOTO, Shuichi HAYASHI, Hideyoshi KITAHARA
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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: 9564600Abstract: A compound having an indolocarbazole ring structure is represented by the following general formula (1), and is used as a material for forming a highly efficient and highly durable organic electroluminescent device. The compound features excellent hole injection/transport capability, has electron blocking power and is highly stable in the form of a thin film. wherein, A is a divalent aromatic hydrocarbon group or aromatic heterocyclic group, Ar1 to Ar4 are monovalent aromatic hydrocarbon groups or aromatic heterocyclic groups, and R1 to R9 are hydrogen atoms, deuterium atoms, fluorine atoms, chlorine atoms, cyano groups, nitro groups, alkyl groups, cycloalkyl groups, alkenyl groups, alkyloxy groups, cycloalkyloxy groups, aromatic hydrocarbon groups, aromatic heterocyclic groups or aryloxy groups.Type: GrantFiled: February 14, 2012Date of Patent: February 7, 2017Assignee: HODOGAYA CHEMICAL CO., LTD.Inventors: Norimasa Yokoyama, Makoto Nagaoka, Sawa Izumi, Hiroshi Ookuma, Shuichi Hayashi
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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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Patent number: 9525140Abstract: A problem of the invention is to provide an organic EL device having a high efficiency, a low driving voltage and a long life, by combining various materials for organic EL device, which are excellent in an injection or transportation performance of holes or electrons, and in stability and durability in a thin film, so as to enable the respective materials to effectively reveal their characteristics. The invention relates to an organic electroluminescent device including at least an anode electrode, a hole-injecting layer, a hole-transporting layer, an emitting layer, an electron-transporting layer and a cathode electrode in this order, in which the hole-injecting layer contains an arylamine compound having, in its molecule, a structure in which three or more triphenylamine structures are connected through a single bond or a hetero atom-free divalent group; and the hole-transporting layer contains an arylamine compound having two triphenylamine structures in its molecule.Type: GrantFiled: October 2, 2013Date of Patent: December 20, 2016Assignee: HODOGAYA CHEMICAL CO., LTD.Inventors: Norimasa Yokoyama, Shigeru Kusano, Shuichi Hayashi
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Patent number: 9444055Abstract: An organic electroluminescent device comprising, between an anode and a cathode, a hole-transporting layer, a luminous layer and an electron-transporting layer, wherein the hole-transporting layer contains an arylamine compound (X) having a molecular structure to which three or more triphenylamine skeletons are singly bonded or bonded through a divalent hydrocarbon group and an arylamine compound (Y) having a molecular structure to which two triphenylamine skeletons are singly bonded or bonded through the divalent hydrocarbon group. The device excels in hole and electron injection/transport property, stability and durability in the form of thin films, and is highly efficient, becomes luminous on a low driving voltage, and has a long life.Type: GrantFiled: February 24, 2012Date of Patent: September 13, 2016Assignee: HODOGAYA CHEMICAL CO., LTD.Inventors: Norimasa Yokoyama, Shuichi Hayashi, Eiji Takahashi, Shigeru Kusano
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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: 20160118591Abstract: 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 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: July 1, 2014Publication date: April 28, 2016Inventors: Norimasa Yokoyama, Shuichi Hayashi, Naoaki Kabasawa
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Publication number: 20160087215Abstract: Pyrimidine derivatives of the present invention are represented by the following general formula (1), wherein W, X, Y and Z are carbon atoms or nitrogen atoms under the condition that only any one is a nitrogen atom to which none of the groups R6 to R9 are bonded, A and B are single bonds, divalent aromatic hydrocarbon groups or divalent aromatic heterocyclic groups, Ar1 and Ar2 are monovalent aromatic hydrocarbon groups or monovalent aromatic heterocyclic groups, and R1 to R9 are hydrogen atoms, deuterium atoms, fluorine atoms, chlorine atoms, cyano groups, alkyl groups having 1 to 6 carbon atoms, monovalent aromatic hydrocarbon groups or monovalent aromatic heterocyclic groups. The compound excels in electron injection/transporting capability, features high hole-blocking power and high stability in the form of a thin film, and can be favorably used as a material for producing highly efficient and durable organic EL devices.Type: ApplicationFiled: May 15, 2014Publication date: March 24, 2016Applicant: HODOGAYA CHEMICAL CO., LTD.Inventors: Norimasa YOKOYAMA, Naoaki KABASAWA, Shuichi HAYASHI, Jeong-Soo KIM
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Publication number: 20150380657Abstract: An organic 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: February 21, 2014Publication date: December 31, 2015Inventors: Norimasa Yokoyama, Shuichi Hayashi, Naoaki Kabasawa, Shunji Mochizuki
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Publication number: 20150287920Abstract: An organic electroluminescent device having a capping layer composed of material having a high refractive index that involves only small differences in refractive indices measured in the blue, green, and red wavelength regions, excelling in thin film stability and durability and having no absorption in the respective wavelength ranges of blue, green, and red is provided to improve device characteristics of the organic electroluminescent device, particularly to greatly improve the coupling-out efficiency.Type: ApplicationFiled: March 14, 2013Publication date: October 8, 2015Applicant: HODOGAYA CHEMICAL CO., LTD.Inventors: Makoto Nagaoka, Shuichi Hayashi, Motonori Tsuji, Yoshikazu Aoki
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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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Patent number: 9123897Abstract: Benzotriazole derivatives represented by the following general formula (1), wherein Ar1 and Ar2 are, for example, aromatic hydrocarbon groups or aromatic heterocyclic ring groups, and A is a group including a pyridine ring. The compounds excel in electron injection/transport capability, feature a high hole-blocking power and a high stability in their thin-film form, and are useful as materials for producing highly efficient and highly durable organic electroluminescent devices.Type: GrantFiled: October 5, 2012Date of Patent: September 1, 2015Assignee: HODOGAYA CHEMICAL CO., LTD.Inventors: Norimasa Yokoyama, Shigetaka Numazawa, Shirou Irisa, 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