Patents by Inventor Hajime Nakabayashi
Hajime Nakabayashi 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: 20240304439Abstract: A substrate processing method includes: forming a metal film, which changes in volume when the metal film is oxidized, on a rear surface of a substrate; forming an oxide film, through which oxygen permeates, on a front surface of the metal film; and applying stress to the substrate by oxidizing the metal film.Type: ApplicationFiled: January 13, 2022Publication date: September 12, 2024Inventors: Koji AKIYAMA, Philippe GAUBERT, Hajime NAKABAYASHI, Chihiro TAMURA, Hisashi WARASHINA
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Publication number: 20240128307Abstract: A substrate processing method includes: (A) preparing a substrate, on which a high-dielectric film having a higher permittivity than a SiO2 film is formed; (B) supplying, to the substrate, a metal solution containing a second metal element having a higher electronegativity or a lower valence than a first metal element contained in the high-dielectric film; and (C) forming a doping layer, in which the first metal element is substituted with the second metal element, on a surface of the high-dielectric film.Type: ApplicationFiled: January 31, 2022Publication date: April 18, 2024Inventors: Rintaro HIGUCHI, Mitsunori NAKAMORI, Koji KAGAWA, Kenji SEKIGUCHI, Hajime NAKABAYASHI, Syuhei YONEZAWA
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Patent number: 11869927Abstract: A method of manufacturing a semiconductor device includes a first laminating step, a second laminating step, a third laminating step, a first annealing step, and a fourth laminating step. In the first laminating step, a first electrode film is laminated on a substrate. In the second laminating step, a capacitive insulator is laminated on the first electrode film. In the third laminating step, a metal oxide is laminated on the capacitive insulator. In the first annealing step, the first electrode film, the capacitive insulator, and the metal oxide, which are laminated on the substrate, are annealed. In the fourth laminating step, a second electrode film is laminated on the annealed metal oxide. The capacitive insulator is an oxide that contains at least one of zirconium and hafnium, and the metal oxide is an oxide that contains at least one of tungsten, molybdenum, and vanadium.Type: GrantFiled: September 19, 2019Date of Patent: January 9, 2024Assignee: Tokyo Electron LimitedInventors: Yumiko Kawano, Genji Nakamura, Philippe Gaubert, Hajime Nakabayashi
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Publication number: 20230361163Abstract: This film formation method comprises: a first film formation step; a second film formation step; and a third film formation step. In the first film formation step, a dielectric film is formed on a first conductive film. In the second film formation step, a metal oxide film is formed on the dielectric film. In addition, in the second film formation step, a metal oxide film is formed using heated oxygen gas and a vapor of an organic metal compound. In the third film formation step, a second conductive film is formed on the metal oxide film.Type: ApplicationFiled: September 10, 2021Publication date: November 9, 2023Inventors: Koji AKIYAMA, Hajime NAKABAYASHI, Akinobu KAKIMOTO, Nobutake KABUKI, Yumiko KAWANO, Sara OTSUKI
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Publication number: 20230019943Abstract: A pattern formation method includes: forming a photosensitive hard mask made of a transition metal oxide film on a surface of a substrate; exposing the photosensitive hard mask to EUV light in a desired pattern; causing a state change in an exposed region by heat generated during exposure; and selectively removing either a region where the state change has occurred or a region where the state change has not occurred.Type: ApplicationFiled: July 11, 2022Publication date: January 19, 2023Inventors: Hajime NAKABAYASHI, Tomohito YAMAJI, Kazuki YAMADA, Ryuichi ASAKO
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Patent number: 11211288Abstract: There is provided a semiconductor device including: a first wiring; a second wiring; a dielectric layer configured to insulate the first wiring and the second wiring from each other; and an impedance adjustment layer formed between the first wiring and the second wiring, and configured to adjust an impedance between the first wiring and the second wiring.Type: GrantFiled: September 6, 2018Date of Patent: December 28, 2021Assignee: TOKYO ELECTRON LIMITEDInventors: Hajime Nakabayashi, Koji Akiyama
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Publication number: 20210399085Abstract: A method of manufacturing a semiconductor device includes a first laminating step, a second laminating step, a third laminating step, a first annealing step, and a fourth laminating step. In the first laminating step, a first electrode film is laminated on a substrate. In the second laminating step, a capacitive insulator is laminated on the first electrode film. In the third laminating step, a metal oxide is laminated on the capacitive insulator. In the first annealing step, the first electrode film, the capacitive insulator, and the metal oxide, which are laminated on the substrate, are annealed. In the fourth laminating step, a second electrode film is laminated on the annealed metal oxide. The capacitive insulator is an oxide that contains at least one of zirconium and hafnium, and the metal oxide is an oxide that contains at least one of tungsten, molybdenum, and vanadium.Type: ApplicationFiled: September 19, 2019Publication date: December 23, 2021Inventors: Yumiko KAWANO, Genji NAKAMURA, Philippe GAUBERT, Hajime NAKABAYASHI
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Patent number: 10490443Abstract: A method of selectively forming a thin film on a substrate to be processed in which a conductive film and an insulating film are exposed to a surface of the substrate includes: selectively forming a first Ru film only on a first surface, which is an exposed surface of the conductive film and formed of one of Ru, RuO2, Pt, Pd, CuO, and CuO2, using an Ru(EtCp)2 gas and an O2 gas; and selectively forming a first SiO2-containing insulating film only on a second surface, which is an exposed surface of the insulating film has OH groups, by performing one or more times a process of supplying a TMA gas to the substrate to adsorb TMA only to the second surface and a process of forming an SiO2 film only on a surface of the adsorbed TMA using a silanol group-containing silicon raw material and an oxidizing agent.Type: GrantFiled: September 27, 2018Date of Patent: November 26, 2019Assignee: TOKYO ELECTRON LIMITEDInventors: Yumiko Kawano, Shuji Azumo, Hiroki Murakami, Michitaka Aita, Tadahiro Ishizaka, Koji Akiyama, Yusaku Kashiwagi, Hajime Nakabayashi
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Publication number: 20190123165Abstract: There is provided a semiconductor device. The semiconductor device includes a first electrode made of a metal, a first semiconductor, a first insulating film configured to be provided between the first electrode and the first semiconductor and to be made of an insulating transition metal oxide and an intermediate film configured to be provided between the first electrode and the first insulating film. A lower end of a conduction band of the intermediate film is lower than a Fermi level of the metal constituting the first electrode.Type: ApplicationFiled: October 24, 2018Publication date: April 25, 2019Inventors: Koji AKIYAMA, Hajime NAKABAYASHI, Kazuki HASHIMOTO, Sara OTSUKI
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Publication number: 20190096750Abstract: A method of selectively forming a thin film on a substrate to be processed in which a conductive film and an insulating film are exposed to a surface of the substrate includes: selectively forming a first Ru film only on a first surface, which is an exposed surface of the conductive film and formed of one of Ru, RuO2, Pt, Pd, CuO, and CuO2, using an Ru(EtCp)2 gas and an O2 gas; and selectively forming a first SiO2-containing insulating film only on a second surface, which is an exposed surface of the insulating film has OH groups, by performing one or more times a process of supplying a TMA gas to the substrate to adsorb TMA only to the second surface and a process of forming an SiO2 film only on a surface of the adsorbed TMA using a silanol group-containing silicon raw material and an oxidizing agent.Type: ApplicationFiled: September 27, 2018Publication date: March 28, 2019Inventors: Yumiko KAWANO, Shuji AZUMO, Hiroki MURAKAMI, Michitaka AITA, Tadahiro ISHIZAKA, Koji AKIYAMA, Yusaku KASHIWAGI, Hajime NAKABAYASHI
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Publication number: 20190074216Abstract: There is provided a semiconductor device including: a first wiring; a second wiring; a dielectric layer configured to insulate the first wiring and the second wiring from each other; and an impedance adjustment layer formed between the first wiring and the second wiring, and configured to adjust an impedance between the first wiring and the second wiring.Type: ApplicationFiled: September 6, 2018Publication date: March 7, 2019Inventors: Hajime NAKABAYASHI, Koji AKIYAMA
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Publication number: 20140162428Abstract: A phase change memory includes an insulating layer on a substrate, an electrode layer having one pole and an electrode layer having another pole within the insulating layer, an opening portion whose lower portion on an upper portion of the insulating layer is substantially square or substantially rectangular, a phase change portion formed substantially parallel to a surface of the substrate along the respective sides of the lower portion of the opening portion, and two connection electrodes having a pole and connected to the phase change portion at two opposing corners of the lower portion of the opening portion connecting a diode portion connected to the electrode layer having one pole and the phase change portion, and two connection electrodes having another pole and connected to the phase change portion at the other two opposing corners connecting the phase change portion and the electrode layer having another pole.Type: ApplicationFiled: February 11, 2014Publication date: June 12, 2014Applicant: TOKYO ELECTRON LIMITEDInventors: Hajime NAKABAYASHI, Kenichi OYAMA, Yoshihiro HIROTA
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Patent number: 8687405Abstract: A phase change memory includes an insulating layer on a substrate, an electrode layer having one pole and an electrode layer having another pole within the insulating layer, an opening portion whose lower portion on an upper portion of the insulating layer is substantially square or substantially rectangular, a phase change portion formed substantially parallel to a surface of the substrate along the respective sides of the lower portion of the opening portion, and two connection electrodes having a pole and connected to the phase change portion at two opposing corners of the lower portion of the opening portion connecting a diode portion connected to the electrode layer having one pole and the phase change portion, and two connection electrodes having another pole and connected to the phase change portion at the other two opposing corners connecting the phase change portion and the electrode layer having another pole.Type: GrantFiled: June 4, 2012Date of Patent: April 1, 2014Assignee: Tokyo Electron LimitedInventors: Hajime Nakabayashi, Kenichi Oyama, Yoshihiro Hirota
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Publication number: 20140034893Abstract: A switch device used in a crossbar memory array having a non-volatile memory includes: a laminated body formed of a semiconductor film and an insulating film laminated on the semiconductor film; and a pair of electrode layers having the laminated body therebetween. The semiconductor film is made of a semiconductor material having an I-V characteristic with a negative resistance region.Type: ApplicationFiled: August 2, 2013Publication date: February 6, 2014Applicant: TOKYO ELECTRON LIMITEDInventors: Hajime NAKABAYASHI, Yoshihiro HIROTA
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Publication number: 20120314493Abstract: A phase change memory includes an insulating layer on a substrate, an electrode layer having one pole and an electrode layer having another pole within the insulating layer, an opening portion whose lower portion on an upper portion of the insulating layer is substantially square or substantially rectangular, a phase change portion formed substantially parallel to a surface of the substrate along the respective sides of the lower portion of the opening portion, and two connection electrodes having a pole and connected to the phase change portion at two opposing corners of the lower portion of the opening portion connecting a diode portion connected to the electrode layer having one pole and the phase change portion, and two connection electrodes having another pole and connected to the phase change portion at the other two opposing corners connecting the phase change portion and the electrode layer having another pole.Type: ApplicationFiled: June 4, 2012Publication date: December 13, 2012Applicant: TOKYO ELECTRON LIMITEDInventors: Hajime NAKABAYASHI, Kenichi OYAMA, Yoshihiro HIROTA
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Patent number: 7994562Abstract: The memory apparatus includes a memory device including a gate insulating layer formed on a silicon substrate by sequentially stacking a tunnel oxide layer, a charge trap layer, and a block oxide layer in this order, on the silicon substrate. In addition, a gate electrode is formed on the gate insulating layer. The block oxide layer is formed by stacking a first block oxide layer and a second block oxide layer, wherein the first block oxide layer is adjacent to the charge trap layer and the second block oxide layer is adjacent to the gate electrode. The second block oxide layer is formed of a dielectric material having higher permittivity than that of the first block oxide layer and having higher electron affinity than that of the first block oxide layer.Type: GrantFiled: July 16, 2009Date of Patent: August 9, 2011Assignee: Tokyo Electron LimitedInventors: Hajime Nakabayashi, Yasushi Akasaka, Tetsuya Shibata
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Patent number: 7955922Abstract: A method for manufacturing a fin-type field effect transistor simply and securely by using a SOI (Silicon On Insulator) wafer, capable of suppressing an undercut formation, is disclosed. The method includes forming a fin-shaped protrusion by selectively dry-etching a single crystalline silicon layer until an underlying buried oxide layer is exposed; forming a sacrificial oxide film by oxidizing a surface of the protrusion including a damage inflicted thereon; and forming a fin having a clean surface by removing the sacrificial oxide film by etching, wherein an etching rate r1 of the sacrificial oxide film is higher than an etching rate r2 of the buried oxide layer during the etching.Type: GrantFiled: January 11, 2008Date of Patent: June 7, 2011Assignee: Tokyo Electron LimitedInventors: Hajime Nakabayashi, Takuya Sugawara, Takashi Kobayashi, Junichi Kitagawa, Yoshitsugu Tanaka
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Publication number: 20100013000Abstract: The memory apparatus includes a memory device including a gate insulating layer formed on a silicon substrate by sequentially stacking a tunnel oxide layer, a charge trap layer, and a block oxide layer in this order, on the silicon substrate. In addition, a gate electrode is formed on the gate insulating layer. The block oxide layer is formed by stacking a first block oxide layer and a second block oxide layer, wherein the first block oxide layer is adjacent to the charge trap layer and the second block oxide layer is adjacent to the gate electrode. The second block oxide layer is formed of a dielectric material having higher permittivity than that of the first block oxide layer and having higher electron affinity than that of the first block oxide layer.Type: ApplicationFiled: July 16, 2009Publication date: January 21, 2010Applicant: TOKYO ELECTRON LIMITEDInventors: Hajime NAKABAYASHI, Yasushi AKASAKA, Tetsuya SHIBATA
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Publication number: 20080171407Abstract: A method for manufacturing a fin-type field effect transistor simply and securely by using a SOI (Silicon On Insulator) wafer, capable of suppressing an undercut formation, is disclosed. The method includes forming a fin-shaped protrusion by selectively dry-etching a single crystalline silicon layer until an underlying buried oxide layer is exposed; forming a sacrificial oxide film by oxidizing a surface of the protrusion including a damage inflicted thereon; and forming a fin having a clean surface by removing the sacrificial oxide film by etching, wherein an etching rate r1 of the sacrificial oxide film is higher than an etching rate r2 of the buried oxide layer during the etching.Type: ApplicationFiled: January 11, 2008Publication date: July 17, 2008Applicant: TOKYO ELECTRON LIMITEDInventors: Hajime Nakabayashi, Takuya Sugawara, Takashi Kobayashi, Junichi Kitagawa, Yoshitsugu Tanaka