Patents Assigned to Tokyo Electron Limited
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Patent number: 11894378Abstract: A semiconductor device includes a plurality of nano-channel field-effect transistor stacks positioned adjacent to each other such that source-drain regions are shared between adjacent nano-channel field-effect transistor stacks, each nano-channel field-effect transistor stack including at least two nano-channel field-effect transistors and corresponding source/drain regions vertically separated from each other.Type: GrantFiled: April 22, 2022Date of Patent: February 6, 2024Assignee: Tokyo Electron LimitedInventors: H. Jim Fulford, Mark I. Gardner
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Publication number: 20240038501Abstract: A substrate etching method performed by using a plasma processing apparatus includes: providing a substrate including a silicon-containing film to a substrate support; periodically supplying, to the substrate support, bias RF power of 20 kW to 50 kW at a duty ratio of 5% to 50%; and etching the silicon-containing film by plasma generated from a processing gas containing a fluorocarbon gas and an oxygen-containing gasType: ApplicationFiled: October 13, 2023Publication date: February 1, 2024Applicant: Tokyo Electron LimitedInventors: Akira NAKAGAWA, Kenji KOMATSU, Kazuma KAMIMURA, Tsukasa HIRAYAMA
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Publication number: 20240038599Abstract: Semiconductor devices and corresponding methods of manufacturing the same are disclosed. For example, a semiconductor device includes a first semiconductor substrate and a second semiconductor substrate. A first portion of a test structure is disposed over the first substrate and a second portion of the test structure is disposed over the second substrate. The test structure includes intentionally offset portions. The performance characteristics of the intestinally offset portions are measured to detect an alignment of the first portion of the test structure and a second portion of the test structure.Type: ApplicationFiled: July 28, 2022Publication date: February 1, 2024Applicant: Tokyo Electron LimitedInventor: Kevin Ryan
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Publication number: 20240038507Abstract: A disclosed substrate support is used in a plasma processing apparatus. The substrate support includes a base, an electrostatic chuck, and a plurality of electrodes. The base is formed of ceramic. The electrostatic chuck is disposed on the base. The electrostatic chuck includes a central region, an annular region, and a coating layer. The central region is configured to support a substrate placed thereon. The annular region extends to surround the central region and is configured to support an edge ring placed thereon. The coating layer is formed of ceramic. The coating layer is configuring a surface of the electrostatic chuck. The plurality of electrodes include a first metal layer and a second metal layer. The first metal layer is disposed between the central region and the base. The second metal layer is disposed between the annular region and the base.Type: ApplicationFiled: July 27, 2023Publication date: February 1, 2024Applicant: Tokyo Electron LimitedInventor: Satoshi TAGA
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Publication number: 20240038494Abstract: An etching method includes: steps a), b), c), and d). Step a) provides a substrate having an underlying layer and an etching target film formed on the underlying layer, on a stage. Step b) generates plasma from a processing gas. Step c) supplies a bias power having a first frequency to the stage to etch the etching target film, thereby forming a recess. Step d) changes a frequency of the bias power to a second frequency different from the first frequency according to an aspect ratio of the recess after step c), to further etch the etching target film. After a generation of the plasma, the etching target film is continuously etched during a time period until the underlying layer is exposed.Type: ApplicationFiled: August 27, 2021Publication date: February 1, 2024Applicant: Tokyo Electron LimitedInventors: Maju TOMURA, Ryutaro SUDA, Nobuyuki FUKUI
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Patent number: 11887817Abstract: The disclosed plasma processing apparatus is provided with a chamber, a substrate support, and a power source system. The substrate support has an electrode and configured to support a substrate in the chamber. The power source system is electrically connected to the electrode and configured to apply a bias voltage to the electrode to draw ions from a plasma in the chamber into the substrate on the substrate support. The power source system is configured to output a first pulse to the electrode in a first period and output a second pulse to the electrode in a second period after the first period, as the bias voltage. Each of the first pulse and the second pulse is a pulse of a voltage. A voltage level of the first pulse is different from a voltage level of the second pulse.Type: GrantFiled: April 16, 2021Date of Patent: January 30, 2024Assignee: Tokyo Electron LimitedInventor: Koichi Nagami
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Patent number: 11887816Abstract: There is provided a plasma processing apparatus. The apparatus comprises: a chamber body; and a power supply unit configured to output power for exciting a gas supplied to an inside of the chamber body. The power supply unit supplies, as power having a center frequency, a bandwidth, and a carrier pitch respectively corresponding to a set frequency, a set bandwidth, and a set carrier pitch that are indicated by a controller, power which is pulse-modulated so as to be a pulse frequency, a duty ratio, a high level, and a low level respectively corresponding to a set pulse frequency, a set duty ratio, a high-level set power, and a low-level set power indicated by the controller, and in which a pulse on time determined by the set pulse frequency and the set duty ratio is longer than a power fluctuation cycle of the power having the bandwidth.Type: GrantFiled: October 28, 2021Date of Patent: January 30, 2024Assignee: TOKYO ELECTRON LIMITEDInventors: Kazushi Kaneko, Yohei Ishida
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Patent number: 11887825Abstract: A method of controlling a scanning-type plasma processing apparatus using a phased array antenna, includes observing light emission of plasma generated inside a processing container through observation windows provided at multiple positions in the processing container, calculating an in-plane distribution of values representing characteristics of the plasma on a substrate, based on data on the observed light emission of the plasma, and correcting a scanning pattern and/or a plasma density distribution of the plasma based on the calculated in-plane distribution of the values representing the characteristics of the plasma on the substrate.Type: GrantFiled: October 21, 2020Date of Patent: January 30, 2024Assignee: TOKYO ELECTRON LIMITEDInventors: Mikio Sato, Eiki Kamata, Taro Ikeda
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Patent number: 11885015Abstract: A deposition method includes preparing a substrate having an insulating film formed thereon; forming a molybdenum film on the insulating film by supplying a molybdenum-containing gas and a reducing gas to the substrate; and heat-treating the substrate having the molybdenum film formed on the insulating film, without exposing the substrate to atmospheric air.Type: GrantFiled: May 26, 2022Date of Patent: January 30, 2024Assignee: Tokyo Electron LimitedInventors: Katsumasa Yamaguchi, Tsubasa Yokoi
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Patent number: 11885024Abstract: A gas introduction structure extends in a longitudinal direction of a processing container having a substantially cylindrical shape to supply gas into the processing container. The gas introduction structure includes an introduction section that partitions an introduction chamber, an ejection section that partitions a plurality of ejection chambers each including a plurality of gas holes through which the gas is ejected into the processing container, and a branch section that partitions a branch chamber connected to the introduction chamber. The branch chamber is branched to correspond to the number of ejection chambers in a tournament manner and connected to the ejection chambers.Type: GrantFiled: September 13, 2021Date of Patent: January 30, 2024Assignee: TOKYO ELECTRON LIMITEDInventors: Hiroki Iriuda, Reita Igarashi, Kuniyasu Sakashita
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Patent number: 11887822Abstract: An edge ring includes a ramp surface of which a height decreases from an outer edge-side portion toward an inner edge-side portion. The edge ring is configured to satisfy the relation of T2/T1>T4/T3. Where, T1 is a thickness of the edge ring, before plasma treatment, at a first position on the ramp surface of the inner edge-side portion, and T2 is a thickness of the edge ring, before plasma treatment, at a second position on the ramp surface of the outer edge-side portion. T3 is a thickness of the edge ring, after plasma treatment, at the first position, and T4 is a thickness of the edge ring, after plasma treatment, at the second position.Type: GrantFiled: July 6, 2021Date of Patent: January 30, 2024Assignee: Tokyo Electron LimitedInventors: Toshifumi Ishida, Yusuke Saitoh
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Patent number: 11887871Abstract: A substrate processing apparatus includes a processing tub configured to store therein a processing liquid in which multiple substrates are to be immersed; multiple liquid supplies each of which includes a supply line through which the processing liquid is supplied to an inside of a water tank of the processing tub and a heating device configured to heat the processing liquid at a portion of the supply line; and multiple in-tank temperature sensors configured to measure a temperature of the processing liquid at multiple positions within the water tank of the processing tub.Type: GrantFiled: July 29, 2020Date of Patent: January 30, 2024Assignee: TOKYO ELECTRON LIMITEDInventors: Kazushige Sano, Yuichi Tanaka, Yoshihiro Kai
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Patent number: 11883837Abstract: Light can be used to monitor coating a liquid on a substrate. By directing the light to a spot on the substrate, when the liquid passes through the spot, some light will be reflected, while some light will be scattered. Monitoring this behavior can indicate whether a substrate has been successfully coated with the liquid, as well as identifying defects. Further, coating times can be monitored to make process adjustments.Type: GrantFiled: March 9, 2021Date of Patent: January 30, 2024Assignee: Tokyo Electron LimitedInventors: Mirko Vukovic, Daniel Fulford, Anton J. Devilliers
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Patent number: 11885003Abstract: A rotational drive device includes a first rotator configured to rotate with respect to a stator, a plurality of second rotators configured to rotate with respect to the first rotator, a plurality of drivers configured to rotatably drive the respective second rotators, and a plurality of driver controllers configured to rotate integrally with the first rotator and to control rotation of the drivers, respectively, the respective driver controllers being connected to one another by a communication network.Type: GrantFiled: December 3, 2020Date of Patent: January 30, 2024Assignee: TOKYO ELECTRON LIMITEDInventors: Junnosuke Taguchi, Yasutomo Kimura
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Patent number: 11887861Abstract: A method of processing a substrate, includes: loading the substrate having a silicon-containing film formed thereon into a processing container; a first process of modifying the silicon-containing film by supplying a processing gas containing a halogen-containing gas and a basic gas to the substrate, in a state in which an internal pressure of the processing container is set to a first pressure, to generate a reaction product; a second process of vaporizing the reaction product by setting the internal pressure of the processing container to a second pressure lower than the first pressure; and alternately repeating the modifying the silicon-containing film and the vaporizing the reaction product, wherein subsequent rounds of the first process following the initial first process in the alternately repeating the modifying the silicon-containing film and the vaporizing the reaction product includes supplying the processing gas to the substrate on which the reaction product remains.Type: GrantFiled: January 18, 2021Date of Patent: January 30, 2024Assignee: TOKYO ELECTRON LIMITEDInventor: Jaewon Woo
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Patent number: 11887897Abstract: Aspects of the present disclosure provide a method of fabricating a semiconductor device. For example, the method can include providing a substrate. The substrate can include a first type region and a second type region. The method can also include forming a multilayer stack on the substrate. The multilayer stack can include alternate metal layers and dielectric layers. The method can also include forming first and second openings through the multilayer stack to uncover the first and second type regions, respectively. The method can also include forming first and second vertical channel structures within the first and second openings, respectively. Each of the first and second vertical channel structures can have source, gate and drain regions being in contact with vertical sidewalls of the metal layers of the multilayer stack uncovered by a respective one of the first and second openings.Type: GrantFiled: April 22, 2021Date of Patent: January 30, 2024Assignee: Tokyo Electron LimitedInventors: Mark I. Gardner, H. Jim Fulford
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Patent number: 11887869Abstract: A substrate processing apparatus includes a substrate holder, a first cleaning body, a first moving mechanism, a second cleaning body, a second moving mechanism, and a controller. The first cleaning body cleans one of the upper surface and the lower surface of the substrate held by the substrate holder by ejecting fluid thereto or by coming into contact therewith. The second cleaning body cleans the other one of the upper surface and the lower surface of the substrate held by the substrate holder by coming into contact therewith. The controller controls the first moving mechanism and the second moving mechanism to perform a both-surface cleaning processing in which the first cleaning body which ejects the fluid to one surface or is in contact with the upper surface and the second cleaning body which is in contact with the lower surface are horizontally moved in synchronization with each other.Type: GrantFiled: September 6, 2021Date of Patent: January 30, 2024Assignee: TOKYO ELECTRON LIMITEDInventors: Nobuhiko Mouri, Takanori Obaru, Yasushi Takiguchi, Teruhiko Kodama
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Patent number: 11887815Abstract: In one example, a plasma processing system includes a vacuum system, a plasma processing chamber including a chamber cavity coupled to the vacuum system, a substrate holder including a surface disposed inside the chamber cavity, a radio frequency (RF) source electrode coupled to an RF power source, the RF source electrode configured to ignite plasma in the chamber cavity. The system includes a microwave source coupled to a microwave oscillator, and a conductive spatial uniformity component including a plurality of through openings, where the conductive spatial uniformity component includes a major surface electromagnetically coupled to the microwave source, the major surface configured to couple microwave power to the plasma in the chamber cavity.Type: GrantFiled: May 4, 2021Date of Patent: January 30, 2024Assignee: Tokyo Electron LimitedInventors: Yunho Kim, Yanxiang Shi, Mingmei Wang
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Patent number: 11887824Abstract: A method of cleaning a plasma processing apparatus includes: disposing a first dummy substrate at a first position with respect to a stage inside a chamber and performing a first dry cleaning process inside the chamber; and disposing a second dummy substrate at a second position with respect to the stage inside the chamber and performing a second dry cleaning process inside the chamber, wherein each of a center of the first position and a center of the second position is located at a different position from a center of the stage in a plan view, and wherein the first position and the second position are different from each other in a plan view.Type: GrantFiled: July 27, 2021Date of Patent: January 30, 2024Assignee: TOKYO ELECTRON LIMITEDInventors: Yasutaka Hama, Nobuaki Shindo
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Patent number: 11887821Abstract: An edge ring includes a first member made of a first material and having a contact surface with plasma generated inside the processing container, and a second member made of a second material having Young's modulus lower than that of the first material. The second member is provided on a side opposite to the contact surface of the first member such that a combined structure of the first member and the second member surrounds a periphery of a substrate placed on a stage inside a processing container of a plasma processing apparatus.Type: GrantFiled: August 21, 2020Date of Patent: January 30, 2024Assignee: TOKYO ELECTRON LIMITEDInventor: Masato Kon