Patents by Inventor Kanto Nakamura
Kanto Nakamura 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: 11901166Abstract: A magnetron sputtering apparatus is provided. The apparatus comprises: a vacuum chamber storing a substrate; a plurality of sputtering mechanisms, each including a target having one surface facing the inside of the vacuum chamber, a magnet array, and a moving mechanism for reciprocating the magnet array between a first position and a second position on the other surface of the target; a power supply for forming plasma by supplying power to targets of selected sputtering mechanisms for film formation; a gas supplier for supplying a gas for plasma formation into the vacuum chamber; and a controller for outputting a control signal, in performing the film formation, such that magnet arrays of selected and unselected sputtering mechanisms, extension lines of moving paths of the magnet arrays thereof intersecting each other in plan view, move synchronously or are located at certain positions so as to be distinct from each other.Type: GrantFiled: September 30, 2021Date of Patent: February 13, 2024Assignee: Tokyo Electron LimitedInventors: Tetsuya Miyashita, Kanto Nakamura, Yusuke Kikuchi
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Patent number: 11894222Abstract: A film forming apparatus for forming a film on a substrate by using a magnetron sputtering method. The film forming apparatus includes: a substrate holder configured to hold a substrate; a target holder configured to hold a target made of a ferromagnetic material to face the substrate holder; a magnet provided on a surface of the target holder opposite to the substrate holder, and configured to leak a magnetic field to a front surface of the target held by the target holder that is a surface close to the substrate holder; and a magnetic field strength measurement device configured to measure a strength of the magnetic field.Type: GrantFiled: June 22, 2021Date of Patent: February 6, 2024Assignee: TOKYO ELECTRON LIMITEDInventors: Atsushi Takeuchi, Toru Kitada, Kanto Nakamura, Atsushi Gomi
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Publication number: 20240011148Abstract: There is provided a film forming position misalignment correction method comprising: replacing a shielding member; loading a substrate into a film forming module by a transfer mechanism and forming a film on the substrate; detecting an amount of film forming position misalignment by transferring the substrate on which the film has been formed to a film thickness measuring device; correcting a transfer position of the substrate for the transfer mechanism; and checking the correction by transferring the substrate used for measuring the amount of film forming position misalignment to the film forming module by the transfer mechanism for which the transfer position has been corrected to form a film and determining the amount of film forming position misalignment by measuring a film thickness of the formed film by the film thickness measuring device in the same manner.Type: ApplicationFiled: June 22, 2023Publication date: January 11, 2024Inventors: Atsushi TAKEUCHI, Kazunaga Ono, Kanto Nakamura, Atsushi Gomi
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Publication number: 20230371391Abstract: There is provided a method of manufacturing a magnetoresistive element. The method comprises: (a) placing a substrate on a substrate support of an oxidation processing apparatus, the substrate having a ferromagnetic layer and a magnesium layer provided on the ferromagnetic layer; and (b) oxidizing the magnesium layer by supplying oxygen gas to the substrate in a state where a temperature of the substrate support is set to 150 Kelvin or less to form a magnesium oxide layer from the magnesium layer.Type: ApplicationFiled: September 10, 2021Publication date: November 16, 2023Inventor: Kanto NAKAMURA
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Publication number: 20230011226Abstract: There is provided a film thickness measurement method which measures a film thickness of a specific film to be measured in a multilayer film in situ in a film formation system that forms the multilayer film on a substrate, the method comprising: regarding a plurality of films located under the film to be measured as one underlayer film, measuring a film thickness of the underlayer film, and deriving an optical constant of the underlayer film by spectroscopic interferometry; and after the film to be measured is formed, deriving a film thickness of the film to be measured by spectroscopic interferometry using the film thickness and the optical constant of the underlayer film.Type: ApplicationFiled: June 29, 2022Publication date: January 12, 2023Inventors: Kazunaga ONO, Kanto NAKAMURA, Toru KITADA, Atsushi GOMI
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Publication number: 20230005989Abstract: A film forming apparatus for forming a laminated structure on a substrate to form a magnetic tunnel junction element is disclosed. The film forming apparatus comprises: a plurality of processing chambers where a magnetic layer and an insulating layer are formed on the substrate; a heat treatment chamber where a magnetic field is applied to the substrate to perform heat treatment; a vacuum transfer chamber that connects the processing chambers and the heat treatment chamber; and a controller.Type: ApplicationFiled: June 30, 2022Publication date: January 5, 2023Inventors: Keisuke SATO, Toru KITADA, Atsushi GOMI, Kanto NAKAMURA
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Publication number: 20220341028Abstract: A vacuum processing apparatus includes: a stage on which a substrate is placed; and a shutter configured to be able to move between a shielding position at which the stage is covered and a retracted position that is retracted from the shielding position, wherein the shutter arranged at the shielding position forms a processing space between the shutter and the stage, and includes: a gas supplier configured to supply a gas into the processing space; and a gas exhauster provided closer to a center side of the processing space than the gas supplier and configured to exhaust the gas from the processing space.Type: ApplicationFiled: April 13, 2022Publication date: October 27, 2022Inventors: Kanto NAKAMURA, Hiroyuki YOKOHARA, Yuki MOTOMURA
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Publication number: 20220108880Abstract: A magnetron sputtering apparatus is provided. The apparatus comprises: a vacuum chamber storing a substrate; a plurality of sputtering mechanisms, each including a target having one surface facing the inside of the vacuum chamber, a magnet array, and a moving mechanism for reciprocating the magnet array between a first position and a second position on the other surface of the target; a power supply for forming plasma by supplying power to targets of selected sputtering mechanisms for film formation; a gas supplier for supplying a gas for plasma formation into the vacuum chamber; and a controller for outputting a control signal, in performing the film formation, such that magnet arrays of selected and unselected sputtering mechanisms, extension lines of moving paths of the magnet arrays thereof intersecting each other in plan view, move synchronously or are located at certain positions so as to be distinct from each other.Type: ApplicationFiled: September 30, 2021Publication date: April 7, 2022Inventors: Tetsuya MIYASHITA, Kanto NAKAMURA, Yusuke KIKUCHI
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Publication number: 20210407779Abstract: A film forming apparatus for forming a film on a substrate by using a magnetron sputtering method. The film forming apparatus includes: a substrate holder configured to hold a substrate; a target holder configured to hold a target made of a ferromagnetic material to face the substrate holder; a magnet provided on a surface of the target holder opposite to the substrate holder, and configured to leak a magnetic field to a front surface of the target held by the target holder that is a surface close to the substrate holder; and a magnetic field strength measurement device configured to measure a strength of the magnetic field.Type: ApplicationFiled: June 22, 2021Publication date: December 30, 2021Inventors: Atsushi TAKEUCHI, Toru KITADA, Kanto NAKAMURA, Atsushi GOMI
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Publication number: 20200232090Abstract: A substrate processing device and a processing system process substrates each having a magnetic layer individually and are provided with: a support unit for supporting a substrate; a heating unit for heating the substrate supported on the support unit; a cooling unit for cooling the substrate supported on the support unit; a magnet unit for generating a magnetic field; and a processing chamber accommodating the support unit, the heating unit, and the cooling unit. The magnet unit includes a first and a second end surface which extend in parallel. The first and the second end surface are opposite to each other while being spaced apart from each other. The first end surface corresponds to a first magnetic pole of the magnet unit. The second end surface corresponds to a second magnetic pole of the magnet unit. The processing chamber is disposed between the first and the second end surface.Type: ApplicationFiled: February 21, 2018Publication date: July 23, 2020Inventors: Hiroki MAEHARA, Naoki WATANABE, Toru ISHII, Kanto NAKAMURA, Makoto SAITO, David HURLEY, Ian COLGAN
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Publication number: 20200123649Abstract: In an oxidation processing module, a stage on which a substrate having a metal film is mounted is provided and a cooling mechanism is provided to cool the stage to cool the substrate mounted on the stage to a temperature of 25° C. or lower. Further, a head unit has a facing surface disposed to face an upper surface of the stage and an oxidizing gas supply unit configured to supply oxidizing gas for oxidizing the metal film toward a gap between the facing surface and the upper surface of the stage, and a rotation driving unit is configured to rotate the head unit about a rotation axis intersecting with the upper surface of the stage.Type: ApplicationFiled: October 15, 2019Publication date: April 23, 2020Inventors: Kazunaga ONO, Atsushi GOMI, Kanto NAKAMURA
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Patent number: 10566525Abstract: A method for manufacturing a magnetoresistive element, includes: a first step of preparing a wafer including a first ferromagnetic layer and a first oxide layer provided directly on the first ferromagnetic layer; a second step of forming, after the first step, a second ferromagnetic layer directly on the first oxide layer; a third step of forming, after the second step, an absorbing layer directly on the second ferromagnetic layer; and a fourth step of crystallizing, after the third step, the second ferromagnetic layer by heat treatment. The second ferromagnetic layer contains boron, and the absorbing layer contains a material for absorbing boron from the second ferromagnetic layer by the heat treatment in the fourth step.Type: GrantFiled: June 14, 2018Date of Patent: February 18, 2020Assignee: TOKYO ELECTRON LIMITEDInventors: Hiroki Maehara, Naoki Watanabe, Kanto Nakamura
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Patent number: 10309005Abstract: A deposition device according to one embodiment includes a processing container. A mounting table is installed inside the processing container, and a metal target is installed above the mounting table. Further, a head is configured to inject an oxidizing gas toward the mounting table. This head is configured to move between a first region that is defined between the metal target and a mounting region where a target object is mounted on the mounting table and a second region spaced apart from a space defined between the metal target and the mounting region.Type: GrantFiled: August 28, 2014Date of Patent: June 4, 2019Assignee: TOKYO ELECTRON LIMITEDInventors: Yasuhiko Kojima, Hiroshi Sone, Atsushi Gomi, Kanto Nakamura, Toru Kitada, Yasunobu Suzuki, Yusuke Suzuki, Koichi Takatsuki, Tatsuo Hirasawa, Keisuke Sato, Chiaki Yasumuro, Atsushi Shimada
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Publication number: 20180366641Abstract: A method for manufacturing a magnetoresistive element, includes: a first step of preparing a wafer including a first ferromagnetic layer and a first oxide layer provided directly on the first ferromagnetic layer; a second step of forming, after the first step, a second ferromagnetic layer directly on the first oxide layer; a third step of forming, after the second step, an absorbing layer directly on the second ferromagnetic layer; and a fourth step of crystallizing, after the third step, the second ferromagnetic layer by heat treatment. The second ferromagnetic layer contains boron, and the absorbing layer contains a material for absorbing boron from the second ferromagnetic layer by the heat treatment in the fourth step.Type: ApplicationFiled: June 14, 2018Publication date: December 20, 2018Inventors: Hiroki MAEHARA, Naoki WATANABE, Kanto NAKAMURA
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Publication number: 20170317273Abstract: A method for forming a perpendicular magnetization type magnetic tunnel junction element includes forming a tunnel barrier layer on a first magnetic layer of a workpiece, cooling the workpiece on which the tunnel barrier layer is formed, and forming a second magnetic layer on the tunnel barrier layer after the cooling.Type: ApplicationFiled: July 18, 2017Publication date: November 2, 2017Inventors: Toru KITADA, Kanto NAKAMURA, Atsushi GOMI, Shinji FURUKAWA, Yusuke SUZUKI
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Patent number: 9790590Abstract: The present disclosure provides a vacuum-processing apparatus for forming a metal film on a substrate by sputtering targets with ions of plasma, and then oxidizing the metal film, the apparatus including: a first target composed of a material having a property of adsorbing oxygen; a second target composed of a metal; a power supply unit configured to apply a voltage to the targets; a shutter configured to prevent particles generated from one of the targets from adhering to the other of the targets; a shielding member; an oxygen supply unit configured to supply an oxygen-containing gas to the substrate mounted on the mounting unit; and a control unit configured to perform supplying a plasma-generating voltage to the targets and sputtering the targets and supplying the oxygen-containing gas from the oxygen supply unit to the substrate.Type: GrantFiled: April 30, 2013Date of Patent: October 17, 2017Assignee: TOKYO ELECTRON LIMITEDInventors: Shinji Furukawa, Atsushi Gomi, Tetsuya Miyashita, Toru Kitada, Kanto Nakamura
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Patent number: 9551060Abstract: A film forming apparatus, for forming a metal oxide film on an object, includes a holding unit and a heating unit. The holding unit includes a first heater and holds the object in a processing chamber. A first heater power supply supplies power to the first heater. A target electrode is electrically connected to a metal target provided above the holding unit. A sputtering power supply is electrically connected to the target electrode. An introduction mechanism supplies an oxygen gas toward the holding unit. The heating unit includes a second heater for heating the object and a moving mechanism for moving the second heater between a region in a first space disposed above the holding unit and a region in a second space separated from the first space. A second heater power supply supplies power to the second heater.Type: GrantFiled: July 27, 2015Date of Patent: January 24, 2017Assignee: TOKYO ELECTRON LIMITEDInventors: Atsushi Gomi, Kanto Nakamura, Tooru Kitada, Yasunobu Suzuki, Shinji Furukawa
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Publication number: 20160251746Abstract: A deposition device according to one embodiment includes a processing container. A mounting table is installed inside the processing container, and a metal target is installed above the mounting table. Further, a head is configured to inject an oxidizing gas toward the mounting table. This head is configured to move between a first region that is defined between the metal target and a mounting region where a target object is mounted on the mounting table and a second region spaced apart from a space defined between the metal target and the mounting region.Type: ApplicationFiled: August 28, 2014Publication date: September 1, 2016Inventors: Yasuhiko KOJIMA, Hiroshi SONE, Atsushi GOMI, Kanto NAKAMURA, Toru KITADA, Yasunobu SUZUKI, Yusuke SUZUKI, Koichi TAKATSUKI, Tatsuo HIRASAWA, Keisuke SATO, Chiaki YASUMURO, Atsushi SHIMADA
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Publication number: 20160071707Abstract: A processing apparatus includes a processing chamber, a rotatable mounting table, a cooling mechanism and a driving mechanism. A sputtering target is provided in the processing chamber. The rotatable mounting table is provided in the processing chamber and configured to mount thereon an object to be processed. The cooling mechanism is configured to cool the mounting table. The driving mechanism is configured to change a relative position of the mounting table with respect to the cooling mechanism. The driving mechanism changes a conductivity of heat from the mounting table to the cooling mechanism at least by switching a first state in which the mounting table and the cooling mechanism are separated from each other and a second state in which the mounting table and the cooling mechanism become close to each other.Type: ApplicationFiled: September 1, 2015Publication date: March 10, 2016Inventors: Shinji FURUKAWA, Hiroyuki TOSHIMA, Tooru KITADA, Kanto NAKAMURA, Kazunaga ONO
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Publication number: 20160032446Abstract: A film forming apparatus, for forming a metal oxide film on an object, includes a holding unit and a heating unit. The holding unit includes a first heater and holds the object in a processing chamber. A first heater power supply supplies power to the first heater. A target electrode is electrically connected to a metal target provided above the holding unit. A sputtering power supply is electrically connected to the target electrode. An introduction mechanism supplies an oxygen gas toward the holding unit. The heating unit includes a second heater for heating the object and a moving mechanism for moving the second heater between a region in a first space disposed above the holding unit and a region in a second space separated from the first space. A second heater power supply supplies power to the second heater.Type: ApplicationFiled: July 27, 2015Publication date: February 4, 2016Inventors: Atsushi GOMI, Kanto NAKAMURA, Tooru KITADA, Yasunobu SUZUKI, Shinji FURUKAWA