Patents by Inventor Atsushi Gomi
Atsushi Gomi 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: 12180580Abstract: 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: GrantFiled: June 22, 2023Date of Patent: December 31, 2024Assignee: Tokyo Electron LimitedInventors: Atsushi Takeuchi, Kazunaga Ono, Kanto Nakamura, Atsushi Gomi
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Publication number: 20240363410Abstract: A method for forming a semiconductor device can include providing a substrate including a via in a dielectric layer, forming a ruthenium metal plug in the via, and at least part of the ruthenium metal plug can be formed directly on the dielectric layer in the via, forming a metal cap layer directly on the ruthenium metal plug, and forming a metallization layer, such as a copper-containing trench, over the ruthenium metal plug, such that the metal cap layer is between the metallization layer and the ruthenium metal plug, which can prevent intermixing of the ruthenium of the ruthenium metal plug with the metal or metals in the metallization layer.Type: ApplicationFiled: March 28, 2024Publication date: October 31, 2024Inventors: Ryota Yonezawa, Kai-Hung Yu, Yuji Otsuki, Kenichi Imakita, Atsushi Gomi, Kohichi Satoh, Tadahiro Ishizaka, Takashi Sakuma, Hidenao Suzuki
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Patent number: 12018928Abstract: 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: GrantFiled: June 29, 2022Date of Patent: June 25, 2024Assignee: Tokyo Electron LimitedInventors: Kazunaga Ono, Kanto Nakamura, Toru Kitada, Atsushi Gomi
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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: 20230411142Abstract: Improved process flows and methods are provided for processing a semiconductor substrate have exposed dielectric and metal-containing surfaces. More specifically, improved process flows and methods are provided for pre-cleaning the metal-containing surfaces prior to depositing a metal material onto the metal-containing surfaces. Hot vapor-phase etching is used to remove a native oxide film from the metal-containing surfaces. Prior to hot vapor-phase etching, the semiconductor substrate is exposed to a first silicon-containing gas to deposit an inhibitor film onto the exposed dielectric and metal-containing surfaces. The inhibitor film protects the dielectric surfaces while the native oxide film is being removed via the hot vapor-phase etching. In some embodiments, the semiconductor substrate is exposed to a second silicon-containing gas, after hot vapor-phase etching, to remove residues of the hot vapor-phase etching process from the pre-cleaned metal-containing surfaces.Type: ApplicationFiled: May 17, 2023Publication date: December 21, 2023Inventors: Ryota Yonezawa, Kai-Hung Yu, Tadahiro Ishizaka, Atsushi Gomi, Hidenao Suzuki
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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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Patent number: 11551918Abstract: A film forming apparatus includes: a processing container; a substrate holder that holds the substrate in the processing container; and a target assembly disposed in an upper side of the substrate holder. The target assembly includes: a target made of metal, including a main body and a flange provided around the main body, and emitting sputter particles from the main body; a target holder including a target electrode configured to supply power to the target, and holding the target; a target clamp that clamps the flange of the target to the target holder; and an anti-deposition shield provided around the main body of the target to cover the flange, the target clamp, and the target holder, and having a labyrinth structure in which an inner tip end thereof is disposed to enter a recess between the main body of the target and the target clamp.Type: GrantFiled: May 26, 2020Date of Patent: January 10, 2023Assignee: TOKYO ELECTRON LIMITEDInventors: Kenichi Imakita, Yasuhiko Kojima, Atsushi Gomi, Hiroyuki Yokohara, Hiroshi Sone
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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: 20220415634Abstract: A film forming apparatus for forming a film by magnetron sputtering includes a substrate support supporting the substrate, a holder holding a target for emitting sputtered particles, a magnet unit having a magnet, first and second movement mechanisms configured to periodically move the substrate support and the magnet unit, respectively, and a controller. The controller is configured to control the first movement mechanism and the second movement mechanism so that a phase in a periodic movement of the substrate support remains the same at a start of film formation and at an end of film formation, a phase in a periodic movement of the magnet unit remains the same at a start of film formation and at an end of film formation, and the phase in the periodic movement of the substrate support and the phase in the periodic movement of the magnet unit do not match during film formation.Type: ApplicationFiled: June 17, 2022Publication date: December 29, 2022Inventors: Kenichi Imakita, Hiroaki Chihaya, Toru Kitada, Atsushi Gomi
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Patent number: 11404255Abstract: A sputtering method including: performing a pre-sputtering by emitting sputter particles from a target provided in a sputtering apparatus in a state where the target is shielded by a shielding portion of a shutter provided closed to the target to be capable of opening/closing the target; and, after the pre-sputtering, performing a main-sputtering by emitting the sputter particles from the target in a state where an opening of the shutter is aligned with the target thereby depositing the sputter particles on a substrate. When the pre-sputtering and the main-sputtering are repeatedly performed, a shutter position is changed during the pre-sputtering so as to change a position of the shielding portion aligned with the target.Type: GrantFiled: September 9, 2020Date of Patent: August 2, 2022Assignee: TOKYO ELECTRON LIMITEDInventors: Kazunaga Ono, Atsushi Gomi, Tatsuo Hatano, Yasuhiro Otagiri, Tomoyuki Fujihara, Yuuki Motomura
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Publication number: 20220098717Abstract: A film forming apparatus according to the present invention comprises: a processing chamber; a substrate holder for holding a substrate within the processing chamber; a target electrode, disposed above the substrate holder, for holding a metal target and supplying electrical power from a power source to the target; an oxidizing gas introduction mechanism for supplying an oxidizing gas to the substrate; and a gas supply unit for supplying an inert gas to the space where the target is disposed. Constituent metal is discharged from the target in the form of sputter particles, whereby a metal film is deposited on the substrate, and the metal film is oxidized by the oxidizing gas introduced by the oxidizing gas introduction mechanism, thereby forming a metal oxide film. When the oxidizing gas is introduced, the gas supply unit supplies the inert gas to the space where the target is disposed so that the pressure therein is positive with respect to the pressure in a processing space.Type: ApplicationFiled: September 20, 2019Publication date: March 31, 2022Inventors: Kenichi IMAKITA, Kazunaga ONO, Toru KITADA, Keisuke SATO, Atsushi GOMI, Hiroyuki YOKOHARA, Hiroshi SONE
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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: 20210082675Abstract: A sputtering method including: performing a pre-sputtering by emitting sputter particles from a target provided in a sputtering apparatus in a state where the target is shielded by a shielding portion of a shutter provided closed to the target to be capable of opening/closing the target; and, after the pre-sputtering, performing a main-sputtering by emitting the sputter particles from the target in a state where an opening of the shutter is aligned with the target thereby depositing the sputter particles on a substrate. When the pre-sputtering and the main-sputtering are repeatedly performed, a shutter position is changed during the pre-sputtering so as to change a position of the shielding portion aligned with the target.Type: ApplicationFiled: September 9, 2020Publication date: March 18, 2021Inventors: Kazunaga ONO, Atsushi GOMI, Tatsuo HATANO, Yasuhiro OTAGIRI, Tomoyuki FUJIHARA, Yuuki MOTOMURA
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Publication number: 20200381226Abstract: A film forming apparatus includes: a processing container; a substrate holder that holds the substrate in the processing container; and a target assembly disposed in an upper side of the substrate holder. The target assembly includes: a target made of metal, including a main body and a flange provided around the main body, and emitting sputter particles from the main body; a target holder including a target electrode configured to supply power to the target, and holding the target; a target clamp that clamps the flange of the target to the target holder; and an anti-deposition shield provided around the main body of the target to cover the flange, the target clamp, and the target holder, and having a labyrinth structure in which an inner tip end thereof is disposed to enter a recess between the main body of the target and the target clamp.Type: ApplicationFiled: May 26, 2020Publication date: December 3, 2020Inventors: Kenichi IMAKITA, Yasuhiko KOJIMA, Atsushi GOMI, Hiroyuki YOKOHARA, Hiroshi SONE
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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: 10468237Abstract: An apparatus includes a row of substrate transfer devices 3 which can deliver a wafer W within a transfer chamber; and rows of process modules PM, arranged at right and left sides of the row of the substrate transfer devices along the row, configured to perform processes to the wafer W. The rows of the process modules PM are arranged such that each of the processes can be performed by at least two process modules PM. Thus, when a single process module PM cannot be used, the wafer W can be rapidly transferred to another process module PM which can perform the same process as performed in the corresponding process module. Therefore, even when the single process module PM cannot be used, the processes can be continued to the wafers W without stopping an operation of the apparatus, so that the number of wasted wafers W can be reduced.Type: GrantFiled: July 9, 2018Date of Patent: November 5, 2019Assignee: TOKYO ELECTRON LIMITEDInventors: Atsushi Gomi, Tetsuya Miyashita, Shinji Furukawa, Koji Maeda, Masamichi Hara, Naoyuki Suzuki, Hiroshi Miki, Toshiharu Hirata
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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: 20180315585Abstract: An apparatus includes a row of substrate transfer devices 3 which can deliver a wafer W within a transfer chamber; and rows of process modules PM, arranged at right and left sides of the row of the substrate transfer devices along the row, configured to perform processes to the wafer W. The rows of the process modules PM are arranged such that each of the processes can be performed by at least two process modules PM. Thus, when a single process module PM cannot be used, the wafer W can be rapidly transferred to another process module PM which can perform the same process as performed in the corresponding process module. Therefore, even when the single process module PM cannot be used, the processes can be continued to the wafers W without stopping an operation of the apparatus, so that the number of wasted wafers W can be reduced.Type: ApplicationFiled: July 9, 2018Publication date: November 1, 2018Inventors: Atsushi Gomi, Tetsuya Miyashita, Shinji Furukawa, Koji Maeda, Masamichi Hara, Naoyuki Suzuki, Hiroshi Miki, Toshiharu Hirata
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Patent number: 10049860Abstract: An apparatus includes a row of substrate transfer devices 3 which can deliver a wafer W within a transfer chamber; and rows of process modules PM, arranged at right and left sides of the row of the substrate transfer devices along the row, configured to perform processes to the wafer W. The rows of the process modules PM are arranged such that each of the processes can be performed by at least two process modules PM. Thus, when a single process module PM cannot be used, the wafer W can be rapidly transferred to another process module PM which can perform the same process as performed in the corresponding process module. Therefore, even when the single process module PM cannot be used, the processes can be continued to the wafers W without stopping an operation of the apparatus, so that the number of wasted wafers W can be reduced.Type: GrantFiled: April 30, 2013Date of Patent: August 14, 2018Assignee: TOKYO ELECTRON LIMITEDInventors: Atsushi Gomi, Tetsuya Miyashita, Shinji Furukawa, Koji Maeda, Masamichi Hara, Naoyuki Suzuki, Hiroshi Miki, Toshiharu Hirata