Patents Examined by Rakesh Dhingra
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Patent number: 9574270Abstract: Disclosed is provides a plasma processing apparatus that processes a workpiece. The plasma processing apparatus includes: a processing container configured to accommodate the workpiece; a coaxial waveguide configured to transmit microwaves generated in a microwave generator; and a slow wave plate configured to adjust a wavelength of the microwaves transmitted from the coaxial waveguide and to introduce the microwaves into the processing container. A lower end portion of an inner conductor of the coaxial waveguide has a tapered shape of which a diameter increases downwardly, the slow wave plate has an annular shape in a plan view, and the inner surface of the slow wave plate encloses the lower end portion of the inner conductor and is located more outside than an inner surface of an outer conductor of the coaxial waveguide in a radial direction.Type: GrantFiled: January 26, 2015Date of Patent: February 21, 2017Assignee: TOKYO ELECTRON LIMITEDInventors: Jun Yoshikawa, Michitaka Aita
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Patent number: 9548187Abstract: A microwave radiation antenna includes an antenna body having a microwave radiation surface; a processing gas inlet configured to introduce a processing gas into the antenna body; a gas diffusion space configured to diffuse the processing gas in the antenna body; a plurality of gas outlets provided in the antenna body and configured to discharge the processing gas into the chamber; a plurality of slots provided in the antenna body under a state where the slots are separated from the gas diffusion space and the gas outlets; and an annular dielectric member provided in the microwave radiation surface side of the antenna body to cover a slot formation region where the slots are formed. A metal surface wave is formed in the microwave radiation surface by the microwave radiated through the slots and the annular dielectric member and a surface wave plasma is generated by the metal surface wave.Type: GrantFiled: December 3, 2013Date of Patent: January 17, 2017Assignee: TOKYO ELECTRON LIMITEDInventors: Taro Ikeda, Tomohito Komatsu, Shigeru Kasai, Hiroyuki Miyashita, Yuki Osada, Akira Tanihara, Yutaka Fujino
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Patent number: 9548227Abstract: A microwave induced plasma decapsulation system and method for decapsulation a packaged semiconductor device applies a microwave induced plasma effluent along with etchant gases electrons, ions and free radicals that are chemically reactive to remove the epoxy molding compound encapsulating the semiconductor device. In one embodiment, the decapsulation system utilizes a microwave generator and a coaxial plasma source. In another embodiment, the decapsulation system utilizes a microwave generator, an electromagnetic surface wave plasma source, and a dielectric plasma discharge tube.Type: GrantFiled: October 15, 2014Date of Patent: January 17, 2017Assignee: Nisene Technology GroupInventors: Alan M. Wagner, Ravin Krishnan
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Patent number: 9543123Abstract: A plasma generation antenna and a plasma processing apparatus can supply a gas and an electromagnetic wave effectively. A plasma processing apparatus 10 includes a processing chamber 100 in which a plasma process is performed; a wavelength shortening plate 480 configured to transmit an electromagnetic wave; and a plasma generation antenna 200 having a shower head 210 provided adjacent to the wavelength shortening plate 480. The shower head 210 is made of a conductor, and has a multiple number of gas holes 215 and a multiple number of slots 220 through which the electromagnetic wave passes. The slots 220 are provided at positions isolated from the gas holes 215.Type: GrantFiled: March 30, 2012Date of Patent: January 10, 2017Assignee: TOKYO ELECTRONICS LIMITEDInventors: Taro Ikeda, Tomohito Komatsu, Shigeru Kasai
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Patent number: 9530621Abstract: This disclosure relates to a plasma processing system that can use a single power source assembly to generate inductively coupled plasma (ICP) and surface wave plasma using the same physical hardware. The power source assembly may include an antenna plate that may include a conductive material be used an ICP coil for a radio frequency (RF) power source and as a slot antenna for a microwave source.Type: GrantFiled: May 28, 2014Date of Patent: December 27, 2016Assignee: TOKYO ELECTRON LIMITEDInventors: Peter L. G. Ventzek, Lee Chen
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Patent number: 9514967Abstract: A plasma processing apparatus includes a processing chamber for processing a sample with a plasma, an RF power supply for generating the plasma within the processing chamber, an RF bias power supply for supplying RF bias power to a sample stage on which the sample is mounted, a pulse generation unit for creating first pulses for modulating the output from the RF power supply for generating the plasma and second pulses for modulating the output from the RF bias power supply, and a controller for providing control of the processing of the sample with the sample. The pulse generation unit creates the first pulses and the second pulses synchronized based on a pulse delay time transmitted from the controller. The pulse delay time is established to delay the second pulses relative to the first pulses.Type: GrantFiled: January 16, 2013Date of Patent: December 6, 2016Assignee: HITACHI HIGH-TECHNOLOGIES CORPORATIONInventors: Yasuo Ohgoshi, Michikazu Morimoto, Yuuzou Oohirabaru, Tetsuo Ono
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Patent number: 9514919Abstract: Provided is a substrate treating apparatus, which includes a plasma generating part configured to generate plasma, a housing disposed under the plasma generating part, and having a space therein, a susceptor disposed within the housing and supporting a substrate, and a baffle including injection holes injecting the plasma supplied from the plasma generating part, to the substrate. The baffle includes a base in which the injection holes are formed, and a central portion of the base is thicker than an edge thereof.Type: GrantFiled: July 25, 2012Date of Patent: December 6, 2016Assignee: PSK INC.Inventors: Seung-Kook Yang, Jung-Hyun Kang
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Patent number: 9493874Abstract: A method and apparatus to evenly distribute gas over a wafer in batch processing. Several techniques are disclosed, such as, but not limited to, angling an injector to distribute gas towards a proximate edge of the wafer, and/or reducing the amount of overlap in the center of the wafer of gas from subsequent gas injections.Type: GrantFiled: November 15, 2012Date of Patent: November 15, 2016Assignee: CYPRESS SEMICONDUCTOR CORPORATIONInventor: Rinji Sugino
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Patent number: 9490105Abstract: A plasma processing apparatus includes a first and second electrodes disposed on upper and lower sides and opposite each other within a process container, a first RF power application unit and a DC power supply both connected to the first electrode, and second and third radio frequency power application units both connected to the second electrode. A conductive member is disposed within the process container and grounded to release through plasma a current caused by a DC voltage applied from the DC power supply. The conductive member is supported by a first shield part around the second electrode and laterally protruding therefrom at a position between the mount face of the second electrode and an exhaust plate for the conductive member to be exposed to the plasma. The conductive member is grounded through a conductive internal body of the first shield part.Type: GrantFiled: November 1, 2013Date of Patent: November 8, 2016Assignee: TOKYO ELECTRON LIMITEDInventors: Akira Koshiishi, Masaru Sugimoto, Kunihiko Hinata, Noriyuki Kobayashi, Chishio Koshimizu, Ryuji Ohtani, Kazuo Kibi, Masashi Saito, Naoki Matsumoto, Yoshinobu Ohya, Manabu Iwata, Daisuke Yano, Yohei Yamazawa, Hidetoshi Hanaoka, Toshihiro Hayami, Hiroki Yamazaki, Manabu Sato
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Patent number: 9490149Abstract: A chemical deposition apparatus having conductance control, which includes a showerhead module having a faceplate and a backing plate, the showerhead module including a plurality of inlets which deliver reactor chemistries to a cavity and exhaust outlets which remove reactor chemistries, a pedestal module configured to support a substrate and which moves vertically to close the cavity between the pedestal module and an outer portion of the faceplate, and at least one conductance control assembly, which is in fluid communication with the cavity via the exhaust outlets. The at least one conductance control assembly selected from one or more of the following: a ball valve assembly, a fluidic valve, magnetically coupled rotary plates, and/or a linear based magnetic system.Type: GrantFiled: July 3, 2013Date of Patent: November 8, 2016Assignee: LAM RESEARCH CORPORATIONInventors: Ramesh Chandrasekharan, Karl Leeser, Chunguang Xia, Jeremy Tucker
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Patent number: 9484213Abstract: A processing gas diffusing and supplying unit is provided in a substrate processing unit including a processing chamber for accommodating a substrate. The processing gas diffusing and supplying unit comprises a main body; a plate supported by the main body and having a plurality of gas supply holes; a partition wall; an internal space having a first and a second space partitioned by the partition wall; a first and a second opening respectively communicating with the first and the second space while facing the plate, first and a second space being connected to a first and a second processing gas introducing pipe of the processing chamber, respectively; and a first and a second shielding portion respectively installed in the first and the second space and having a surface facing the first and the second opening.Type: GrantFiled: March 15, 2013Date of Patent: November 1, 2016Assignee: TOKYO ELECTRON LIMITEDInventor: Toshifumi Ishida
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Patent number: 9484191Abstract: A system and method for providing pulsed excited species from a remote plasma unit to a reaction chamber are disclosed. The system includes a pressure control device to control a pressure at the remote plasma unit as reactive species from the remote plasma unit are pulsed to the reaction chamber.Type: GrantFiled: March 8, 2013Date of Patent: November 1, 2016Assignee: ASM IP Holding B.V.Inventor: Jereld Lee Winkler
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Patent number: 9484232Abstract: A zone temperature control structure which has two or more zone of which surface temperatures are controlled to different temperatures, respectively. The structure can maintain a temperature difference by suppressing heat conduction in a direction in which the zones are arrayed, and prevent formation of a hot spot by ensuring smooth heat conduction for heat input in a direction intersecting the direction in which the zones are arrayed. A heat-conducting anisotropic material layer is disposed between the two or more zones. The heat-conducting anisotropic material layer is configured such that heat conductivity is lower in the direction in which the two or more zones are arrayed than in the direction intersecting the direction in which the two or more zones are arrayed.Type: GrantFiled: March 24, 2011Date of Patent: November 1, 2016Assignee: TOKYO ELECTRON LIMITEDInventor: Yasuharu Sasaki
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Patent number: 9455125Abstract: Disclosed is a substrate processing apparatus capable of suppressing generation of plasma in the space between a moving electrode and an end wall at one side of a cylindrical chamber. The substrate processing apparatus includes a cylindrical chamber to receive a wafer, a shower head movable along a central axis of the chamber inside the chamber, a susceptor opposing the shower head in the chamber, and a flexible bellows connecting the shower head to a cover of the chamber, wherein a high frequency power is applied to a processing space presented between the shower head and the susceptor, processing gas is introduced into the processing space, the shower head and the side wall of the chamber are non-contact to each other, and a bypass member is installed electrically connecting the shower head and the cover or the side wall of the chamber.Type: GrantFiled: March 23, 2011Date of Patent: September 27, 2016Assignee: Tokyo Electron LimitedInventors: Akihiro Yoshimura, Tetsuji Sato, Masato Horiguchi, Nobuhiro Wada, Makoto Kobayashi, Hiroshi Tsujimoto, Jun Tamura, Mamoru Naoi
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Patent number: 9418881Abstract: Provided is a substrate processing apparatus capable of suppressing inferiority when heat treatment is controlled using a temperature sensor.Type: GrantFiled: July 28, 2011Date of Patent: August 16, 2016Assignee: HITACHI KOKUSAI ELECTRIC INC.Inventors: Shinobu Sugiura, Masaaki Ueno, Kazuo Tanaka, Masashi Sugishita, Hideto Yamaguchi, Kenji Shirako
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Patent number: 9410242Abstract: A microwave plasma reactor for manufacturing synthetic diamond material via chemical vapour deposition, the microwave plasma reactor comprising: a plasma chamber; a substrate holder disposed in the plasma chamber and comprising a supporting surface for supporting a substrate on which the synthetic diamond material is to be deposited in use; a microwave coupling configuration for feeding microwaves from a microwave generator into the plasma chamber; and a gas flow system for feeding process gases into the plasma chamber and removing them therefrom; wherein the microwave plasma reactor further comprises an electrically conductive plasma stabilizing annulus disposed around the substrate holder within the plasma chamber.Type: GrantFiled: December 14, 2011Date of Patent: August 9, 2016Assignee: Element Six Technologies LimitedInventors: Geoffrey Alan Scarsbrook, Jonathan James Wilman, Helen Wilman, Joseph Michael Dodson, John Robert Brandon, Steven Edward Coe, Christopher John Howard Wort
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Patent number: 9396955Abstract: A plasma tuning rod system is provided with one or more microwave cavities configured to couple electromagnetic (EM) energy in a desired EM wave mode to a plasma by generating resonant microwave energy in one or more plasma tuning rods within and/or adjacent to the plasma. One or more microwave cavity assemblies can be coupled to a process chamber, and can comprise one or more tuning spaces/cavities. Each tuning space/cavity can have one or more plasma tuning rods coupled thereto. The plasma tuning rods can be configured to couple the EM energy from the resonant cavities to the process space within the process chamber and thereby create uniform plasma within the process space.Type: GrantFiled: March 15, 2013Date of Patent: July 19, 2016Assignee: Tokyo Electron LimitedInventors: Jianping Zhao, Lee Chen, Merritt Funk, Iwao Toshihiko, Peter L. G. Ventzek
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Patent number: 9390941Abstract: There is provided a VUV light processing apparatus that can apply vacuum ultraviolet light to the entire surface of a wafer in excellent reproducibility and can process the wafer with VUV (vacuum ultraviolet) light in excellent reproducibility. A VUV light processing apparatus includes: a chamber connected with a gas supply apparatus and an evacuation apparatus, the chamber being capable of reducing the pressure inside the chamber; a plasma light source that generates VUV light including a wavelength of 200 nm or less, the plasma light source including a plasma generating unit that generates plasma in the chamber; and a VUV transmission filter provided between a stage on which a sample to be processed is placed and the sample in the chamber, the VUV transmission filter transmitting the VUV light including a wavelength of 200 nm or less and not transmitting electrons, ions, and radicals in plasma, the VUV transmission filter having the outer diameter size larger than that of the sample.Type: GrantFiled: November 16, 2010Date of Patent: July 12, 2016Assignee: HITACHI HIGH-TECHNOLOGIES CORPORATIONInventors: Seiichi Watanabe, Yutaka Kozuma, Tooru Aramaki, Naoki Yasui, Norihiko Ikeda, Hiroaki Takikawa
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Patent number: 9384979Abstract: A method for depositing a conformal film on a substrate in a plasma processing chamber of a plasma processing system, the substrate being disposed on a chuck, the chuck being coupled to a cooling apparatus, is disclosed. The method includes flowing a first gas mixture into the plasma processing chamber at a first pressure, wherein the first gas mixture includes at least carbon, and wherein the first gas mixture has a condensation temperature. The method also includes cooling the chuck below the condensation temperature using the cooling apparatus thereby allowing at least some of the first gas mixture to condense on a surface of the substrate. The method further includes venting the first gas mixture from the processing chamber; flowing a second gas mixture into the plasma processing chamber, the second gas mixture being different in composition from the first gas mixture; and striking a plasma to form the conformal film.Type: GrantFiled: September 28, 2012Date of Patent: July 5, 2016Assignee: Lam Research CorporationInventors: Dae-Han Choi, Jisoo Kim, Eric Hudson, Sangheon Lee, Conan Chiang, S. M. Reza Sadjadi
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Patent number: 9376753Abstract: The invention relates to an apparatus for performing a plasma chemical vapor deposition process. The apparatus comprises a mainly cylindrical resonator being provided with an outer cylindrical wall enclosing a resonant cavity having a substantially rotational symmetric shape with respect to a cylindrical axis. The resonator further includes side wall portions bounding the resonant cavity in opposite cylindrical axis directions. In addition, the apparatus comprises a microwave guide extending through the outer cylindrical wall into the resonant cavity. The length of the resonant cavity in the cylindrical direction varies as a function of the radial distance to the cylindrical axis.Type: GrantFiled: November 9, 2012Date of Patent: June 28, 2016Assignee: Draka Comteq B.V.Inventors: Mattheus Jacobus Nicolaas van Stralen, Igor Milicevic, Johannes Antoon Hartsuiker