Patents by Inventor Yasuhiro Sekimoto
Yasuhiro Sekimoto 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: 11700734Abstract: An organic electroluminescence element including an anode, a light-emitting layer, a functional layer, and a cathode stacked in this order. The light-emitting layer and the functional layer are in contact with each other. Hole mobility of the light-emitting layer is greater than electron mobility of the light-emitting layer. The electron mobility of the light-emitting layer is equal to or greater than an effective electron mobility of the functional layer. A highest occupied molecular orbital (HOMO) level of a first functional material included in the light-emitting layer is at least 0.4 eV greater than a HOMO level of a second functional material included in the functional layer.Type: GrantFiled: November 20, 2020Date of Patent: July 11, 2023Assignee: JOLED INC.Inventors: Toshiyuki Akiyama, Yasuhiro Sekimoto, Muneharu Sato, Shinichiro Ishino, Tomohiko Oda, Mineki Hasegawa
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Publication number: 20220199930Abstract: An organic EL element including an anode, a cathode, and a light emitting layer between the anode and the cathode. The light emitting layer includes a fluorescent material and a host material. A difference between a lowest unoccupied molecular orbital (LUMO) level of the fluorescent material and a highest occupied molecular orbital (HOMO) level of the fluorescent material is less than or equal to a difference between a LUMO level and a HOMO level of the host material. The LUMO level of the fluorescent material is equal to or higher than the LUMO level of the host material. The HOMO level of the fluorescent material is equal to or higher than the HOMO level of the host material, and a difference in energy level between the HOMO level of the fluorescent material and the HOMO level of the host material is 0.3 eV or less.Type: ApplicationFiled: December 21, 2021Publication date: June 23, 2022Applicant: JOLED Inc.Inventors: Yasuhiro Sekimoto, Shinichiro Ishino, Toshiyuki Akiyama, Tomohiko Oda, Muneharu Sato
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Publication number: 20220158112Abstract: An organic EL element including an anode, a first functional layer including organic material, disposed above the anode, a second functional layer including organic material, disposed on and in contact with the first functional layer, a light emitting layer disposed on and in contact with the second functional layer, and a cathode disposed above the light emitting layer. A highest occupied molecular orbital (HOMO) level of the organic material of the second functional layer has an energy level at least 0.2 eV lower than that of a HOMO level of the organic material of the first functional layer, and film thickness of the second functional layer is 15 nm or less.Type: ApplicationFiled: November 18, 2021Publication date: May 19, 2022Applicant: JOLED Inc.Inventors: Toshiyuki AKIYAMA, Shinichiro ISHINO, Yasuhiro SEKIMOTO, Muneharu SATO, Takeshi KAMIYA, Tomohiko ODA, Mineki HASEGAWA, Masakazu TAKATA
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Publication number: 20210167312Abstract: An organic electroluminescence element including an anode, a light-emitting layer, a functional layer, and a cathode stacked in this order. The light-emitting layer and the functional layer are in contact with each other. Hole mobility of the light-emitting layer is greater than electron mobility of the light-emitting layer. The electron mobility of the light-emitting layer is equal to or greater than an effective electron mobility of the functional layer. A highest occupied molecular orbital (HOMO) level of a first functional material included in the light-emitting layer is at least 0.4 eV greater than a HOMO level of a second functional material included in the functional layer.Type: ApplicationFiled: November 20, 2020Publication date: June 3, 2021Applicant: JOLED Inc.Inventors: Toshiyuki AKIYAMA, Yasuhiro SEKIMOTO, Muneharu SATO, Shinichiro ISHINO, Tomohiko ODA, Mineki HASEGAWA
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Patent number: 10957856Abstract: Disclosed is a method for manufacturing an organic EL display panel in which a plurality of organic electroluminescence elements each including an organic layer are arranged on an upper side of a substrate. The method includes applying an ink obtained by dissolving or dispersing an organic material in a solvent to a preset application area over the substrate, and cooling the ink applied in the applying within a period until the ink is dried, to lower an ink temperature to a second temperature lower than a first temperature of the ink at a time of application thereof.Type: GrantFiled: March 7, 2019Date of Patent: March 23, 2021Assignee: JOLED INC.Inventors: Yasuhiro Yamauchi, Shinichiro Ishino, Tomohiko Oda, Mineki Hasegawa, Yasuhiro Sekimoto
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Publication number: 20200373494Abstract: Disclosed is a light-emitting layer-forming ink useful in forming an organic light-emitting layer for an organic EL element by a printing process, including a tetralin-based organic solvent, and a solute including an anthracene-based, low molecular material and dissolved at a concentration of 3% or higher and 12% or lower in the tetralin-based organic solvent.Type: ApplicationFiled: May 19, 2020Publication date: November 26, 2020Applicant: JOLED Inc.Inventors: Tomohiko ODA, Shinichiro ISHINO, Toshiyuki AKIYAMA, Mineki HASEGAWA, Yasuhiro SEKIMOTO, Muneharu SATO
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Publication number: 20200365820Abstract: Provided is an organic electroluminescent element obtained by stacking an anode, a light emitting layer, an electron transport layer, and a cathode in that order, the organic electroluminescent element including an electron injection control layer in contact with both the light emitting layer and the electron transport layer, in which the light emitting layer contains a fluorescent material as a luminescent material, a lowest unoccupied molecular orbital level of a functional material contained in the electron injection control layer is higher than a lowest unoccupied molecular orbital level of a functional material contained in the electron transport layer by 0.1 eV or higher, and the lowest unoccupied molecular orbital level of the functional material contained in the electron injection control layer is equal to or higher than a lowest unoccupied molecular orbital level of a functional material contained in the light emitting layer.Type: ApplicationFiled: May 15, 2020Publication date: November 19, 2020Applicant: JOLED Inc.Inventors: Yasuhiro SEKIMOTO, Toshiyuki Akiyama, Muneharu Sato, Shinichiro Ishino, Tomohiko Oda, Mineki Hasegawa
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Publication number: 20190372542Abstract: A sub wiring pattern (21) branches from a first branching portion (20a) of a main wiring pattern (20), and connects to the main wiring pattern (20) at a second branching portion (20b). In a portion of the main wiring pattern (20) from the first branching portion (20a) to the second branching portion (20b), a resistor element (12) and a three-terminal capacitor element (13) are serially connected. The sub wiring pattern (21) is formed so that its path length is larger than a length of a path from the first branching portion (20a) to the second branching portion (20b) in the main wiring pattern (20).Type: ApplicationFiled: February 6, 2017Publication date: December 5, 2019Applicant: Mitsubishi Electric CorporationInventors: Akihito KOBAYASHI, Naoto OKA, Hideyuki OHASHI, Yasuhiro SEKIMOTO
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Publication number: 20190280205Abstract: Disclosed is a method for manufacturing an organic EL display panel in which a plurality of organic electroluminescence elements each including an organic layer are arranged on an upper side of a substrate. The method includes applying an ink obtained by dissolving or dispersing an organic material in a solvent to a preset application area over the substrate, and cooling the ink applied in the applying within a period until the ink is dried, to lower an ink temperature to a second temperature lower than a first temperature of the ink at a time of application thereof.Type: ApplicationFiled: March 7, 2019Publication date: September 12, 2019Inventors: YASUHIRO YAMAUCHI, SHINICHIRO ISHINO, TOMOHIKO ODA, MINEKI HASEGAWA, YASUHIRO SEKIMOTO
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Patent number: 9570972Abstract: A CR snubber circuit capable of increasing a reduction effect of the effective inductance component and suppressing a ringing component generated at the time of switching the switching element is obtained. A first current path formed on one surface of the substrate and a second current path formed on the other surface, which is the opposite side of the one surface of the substrate, are opposed to each other with the substrate being sandwiched therebetween, and the capacitor 5 and the resistor 6 are arranged such that current flows in opposite directions in the first current path and the second current path, and a band elimination filter is formed by the capacitor 5, the resistor 6, and an effective inductance component obtained by coupling an inductance component included in the first current path and an inductance component included in the second current path.Type: GrantFiled: October 2, 2013Date of Patent: February 14, 2017Assignee: Mitsubishi Electric CorporationInventors: Mitsuhiko Kanda, Shizuri Tamura, Akira Hatai, Yasuhiro Sekimoto, Yuji Nojiri, Yoshitomo Hayashi
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Publication number: 20160344279Abstract: A CR snubber circuit capable of increasing a reduction effect of the effective inductance component and suppressing a ringing component generated at the time of switching the switching element is obtained. A first current path formed on one surface of the substrate and a second current path formed on the other surface, which is the opposite side of the one surface of the substrate, are opposed to each other with the substrate being sandwiched therebetween, and the capacitor 5 and the resistor 6 are arranged such that current flows in opposite directions in the first current path and the second current path, and a band elimination filter is formed by the capacitor 5, the register 6, and an effective inductance component obtained by coupling an inductance component included in the first current path and an inductance component included in the second current path.Type: ApplicationFiled: October 2, 2013Publication date: November 24, 2016Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Mitsuhiko KANDA, Shizuri TAMURA, Akira HATAI, Yasuhiro SEKIMOTO, Yuji NOJIRI, Yoshitomo HAYASHI
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Patent number: 9000475Abstract: A light-emitter with a bank having an upper surface located at a height of h0 with reference to the top surface of the base layer and a circumferential surface facing the aperture in the bank. When h denotes a height of a given point on the circumferential surface with reference to the top surface and x denotes a distance, measured in a direction along the top surface, of the given point from a boundary between the upper and circumferential surface, a second-order derivative of h with respect to x is continuous at a point corresponding to the boundary, h being smaller than h0. An inflection point of the second-order derivative is located at a height of 0.9h0 or greater with reference to the top surface, and a top surface of the functional layer is in contact with the circumferential surface at a contact point near the inflection point.Type: GrantFiled: February 27, 2013Date of Patent: April 7, 2015Assignee: Panasonic CorporationInventor: Yasuhiro Sekimoto
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Publication number: 20130320388Abstract: A light-emitter with a bank having an upper surface located at a height of h0 with reference to the top surface of the base layer and a circumferential surface facing the aperture in the bank. When h denotes a height of a given point on the circumferential surface with reference to the top surface and x denotes a distance, measured in a direction along the top surface, of the given point from a boundary between the upper and circumferential surface, a second-order derivative of h with respect to x is continuous at a point corresponding to the boundary, h being smaller than h0. An inflection point of the second-order derivative is located at a height of 0.9h0 or greater with reference to the top surface, and a top surface of the functional layer is in contact with the circumferential surface at a contact point near the inflection point.Type: ApplicationFiled: February 27, 2013Publication date: December 5, 2013Applicant: PANASONIC CORPORATIONInventor: Yasuhiro SEKIMOTO
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Patent number: 7825540Abstract: A power conversion device including sub-inverters, each connected in series with respective phase of a three-phase main inverter including a smoothing capacitor, which is fed from a power supply via a converter, as a DC input thereof, and feeds power to a load using the sum of outputs of the inverters. A manipulative quantity is determined so that the DC voltage at each of smoothing capacitors which is an input of each of the sub-inverters will follow a command value. The manipulative quantity is added to an output voltage command for the three-phase main inverter, and is subtracted from an output voltage command for the sub-inverters. Thus, power is shifted from the three-phase main inverter to the smoothing capacitors of the sub-inverters.Type: GrantFiled: March 20, 2007Date of Patent: November 2, 2010Assignee: Mitsubishi Electric CorporationInventors: Shinichi Ogusa, Yukimori Kishida, Akira Imanaka, Yasuhiro Sekimoto, Masaya Harakawa
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Publication number: 20090085405Abstract: A power conversion device including sub-inverters, each connected in series with respective phase of a three-phase main inverter including a smoothing capacitor, which is fed from a power supply via a converter, as a DC input thereof, and feeds power to a load using the sum of outputs of the inverters. A manipulative quantity is determined so that the DC voltage at each of smoothing capacitors which is an input of each of the sub-inverters will follow a command value. The manipulative quantity is added to an output voltage command for the three-phase main inverter, and is subtracted from an output voltage command for the sub-inverters. Thus, power is shifted from the three-phase main inverter to the smoothing capacitors of the sub-inverters.Type: ApplicationFiled: March 20, 2007Publication date: April 2, 2009Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Shinichi Ogusa, Yukimori Kishida, Akira Imanaka, Yasuhiro Sekimoto, Masaya Harakawa
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Patent number: 4000010Abstract: A roll and process for producing same are disclosed. This process includes the steps of: horizontally placing a core body made of a cast steel or a steel based Adamite containing from 0.5 to 2.5 %C, said core body having one or more circumferential grooves; feeding a consumable electrode wire into said groove or grooves, while rotating said core body, to thereby obtain according to an electro-slag welding process a deposited metal or metals filled in said groove or grooves, said deposited metal or metals containing from 1.5 to 2.5%C, from 0.2 to 1.0% Si, from 0.5 to 1.0% Mn, from 0.5 to 3.0 % Cr, from 0.2 to 3.0 % Mo, from 0 to 2.0 V, the balance being essentially Fe, and inevitable impurities; subjecting same to heat treatment at a temperature ranging from 500.degree. C to 700.degree.Type: GrantFiled: March 18, 1975Date of Patent: December 28, 1976Assignee: Hitachi Metals, Ltd.Inventors: Yasuhiro Sekimoto, Kazuhiko Sonomoto, Norimitsu Takano