Magnetically Enhanced Patents (Class 204/298.37)
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Patent number: 11948776Abstract: A plasma processing apparatus adapted to reduce non-uniformity of plasma distribution in a process chamber and to adjust the plasma distribution to “centrally high density”, “circumferentially high density”, or “uniform density” in accordance with a desired etching process, a process chamber; a radio frequency power source; a rectangular waveguide; and a circular waveguide connected to the rectangular waveguide, in which the rectangular waveguide includes an upper rectangular waveguide and a lower rectangular waveguide formed by vertically dividing the rectangular waveguide; and a cutoff section which cuts off the microwave frequency power and which has a dielectric body. The circular waveguide includes an inner waveguide connected to the upper rectangular waveguide and formed inside; and an outer waveguide connected to the lower rectangular waveguide and formed on an outer side of the inner waveguide. The cutoff section has a width narrower than those of the rectangular waveguides except the cutoff section.Type: GrantFiled: January 21, 2021Date of Patent: April 2, 2024Assignee: HITACHI HIGH-TECH CORPORATIONInventors: Chen Pin Hsu, Hitoshi Tamura
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Patent number: 11587764Abstract: Embodiments described herein relate to magnetic and electromagnetic systems and a method for controlling the density profile of plasma generated in a process volume of a PECVD chamber to affect deposition profile of a film. In one embodiment, a plurality of retaining brackets is disposed in a rotational magnetic housing of the magnetic housing systems. Each retaining bracket of the plurality of retaining brackets is disposed in the rotational magnetic housing with a distance d between each retaining bracket. The plurality of retaining brackets has a plurality of magnets removably disposed therein. The plurality of magnets is configured to travel in a circular path when the rotational magnetic housing is rotated around the round central opening.Type: GrantFiled: November 1, 2019Date of Patent: February 21, 2023Assignee: Applied Materials, Inc.Inventors: Srinivas Gandikota, Tza-Jing Gung, Samuel E. Gottheim, Timothy Joseph Franklin, Pramit Manna, Eswaranand Venkatasubramanian, Edward Haywood, Stephen C. Garner, Adam Fischbach
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Patent number: 11286552Abstract: The invention relates to a method for producing a multi-layer sliding bearing element (1), according to which, in a chamber of a cathode sputtering installation a metal layer is deposited on a substrate by means of cathode sputtering of at least one target, said method comprising the steps: introducing a substrate into the chamber of the cathode sputtering installation; ion etching of the surface of the substrate to be coated by ion bombardment, whereby substrate particles are removed from the surface of the substrate; depositing the metal layer on the substrate, whereto target particles are produced from at least one target that is connected as the cathode, said particles being settled on the substrate. In the step of ion etching of the substrate, the target is connected as the anode and at least some of the substrate particles are deposited on the target. The polarity of the target is then reversed for the deposition of the metal layer on the surface of the substrate.Type: GrantFiled: January 23, 2018Date of Patent: March 29, 2022Assignee: Miba Gleitlager Austria GmbHInventor: Johann Nagl
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Patent number: 11186911Abstract: A deposition apparatus for depositing a material on a substrate is provided. The deposition apparatus has a processing chamber defining a processing space in which the substrate is arranged, an ultraviolet radiation assembly configured to emit ultraviolet radiation and a microwave radiation assembly configured to emit microwave radiation into an excitation space that can be the same as the processing space, and a gas feed assembly configured to feed a precursor gas into the processing space and a reactive gas into the excitation space. The ultraviolet radiation assembly and the microwave radiation assembly are operated in combination to excite the reactive gas in the excitation space. The material is deposited on the substrate from the reaction of the excited reactive gas and the precursor gas. A method for using the deposition apparatus to deposit a material on a substrate is provided.Type: GrantFiled: August 19, 2019Date of Patent: November 30, 2021Assignee: International Business Machines CorporationInventors: Alfred Grill, Son V. Nguyen, Deepika Priyadarshini
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Patent number: 10727030Abstract: A microwave plasma source for forming a surface wave plasma by radiating a microwave into a chamber of a plasma processing apparatus, includes: a microwave output part; a microwave transmission part configured to transmit microwave outputted from the microwave output part; and a microwave radiation member configured to radiate the microwave into the chamber, wherein the microwave transmission part includes a microwave introduction mechanism configured to introduce the microwave into the microwave radiation member. The microwave radiation member includes: a metal main body; a dielectric slow-wave member installed in a portion of the main body; a plurality of slots configured to radiate the microwave introduced through the dielectric slow-wave member therethrough; and a dielectric microwave transmission member installed in a portion facing the chamber in the main body to cover a region where the slots are formed; and a plurality of dielectric layers installed to be separated from each other.Type: GrantFiled: May 26, 2016Date of Patent: July 28, 2020Assignee: TOKYO ELECTRON LIMITEDInventors: Taro Ikeda, Tomohito Komatsu
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Patent number: 9279174Abstract: The coating unit for elongate components comprises a tank with molten metal and a coating chamber with inlet and outlet channels with an intake channel submerged into the tank with molten metal. Moreover, the coating chamber and the tank with molten metal are equipped with facilities for internal creation inside them above the heel reduced pressure and positive pressure respectively. To facilitate the operation and maintenance, as well as to ensure continuous operation of this unit without any stops for refilling the tank, to provide safety conditions while metal refilling into the tank with molten metal of this unit for coating of elongate components, the tank with molten metal and coating chamber are located in adjacent positions and jointed together with the inclined intake channel creating connecting vessels.Type: GrantFiled: November 18, 2011Date of Patent: March 8, 2016Inventor: Aleksandr Aleksandrovich Kulakovsky
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Publication number: 20140346040Abstract: A substrate processing apparatus can easily control a plasma intensity distribution in a processing space. A substrate processing apparatus 10 generates an electric field E in a processing space S between a susceptor 12 to which a high frequency power is applied and an upper electrode 13 provided to face the susceptor 12, and also performs a plasma process on a wafer W mounted on the susceptor 12 with plasma generated by the electric field E. The substrate processing apparatus 10 includes multiple electromagnets 20 arranged on a top surface 13a of the upper electrode 13 opposite to the processing space S, and each of the electromagnets 20 is radially arranged with respect to a central portion C of the upper electrode 13 facing a central portion of the wafer W.Type: ApplicationFiled: January 17, 2013Publication date: November 27, 2014Inventors: Akihiro Yokota, Etsuji Ito, Shinji Himori
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Publication number: 20140210337Abstract: A radio-frequency antenna includes a linear antenna conductor, a dielectric protective pipe provided around the antenna conductor, and a deposit shield provided around the protective pipe, the deposit shield covering at least one portion of the protective pipe and having at least one opening on any line extending along the length of the antenna conductor. Although the thin-film material adheres to the surfaces of the protective pipe and the deposit shield, the deposited substance has at least one discontinuous portion in the longitudinal direction of the antenna conductor. Therefore, in the case where the thin-film material is electrically conductive, the blocking of the radio-frequency induction electric field is prevented. In the case where the thin-film material is not electrically conductive, an attenuation in the intensity of the radio-frequency induction electric field is suppressed.Type: ApplicationFiled: August 30, 2011Publication date: July 31, 2014Applicant: EMD CORPORATIONInventors: Yuichi Setsuhara, Akinori Ebe
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Patent number: 8475672Abstract: The present invention provides a plasma processing device and a plasma processing method that can easily adjust plasma density distribution while making the plasma density uniform, and a method of manufacturing an element including a substrate to be processed. In an embodiment of the present invention, the inside of a vacuum vessel (1) is divided by a grid (4) having communication holes into a plasma generation chamber (2) and a plasma processing chamber (5). On the upper wall (26) of the plasma generation chamber (2), magnetic coils (12) are arranged such that magnetic field lines within the vacuum vessel (1) point from the center of the vacuum vessel (1) to a side wall (27), and, outside the side wall (27) of the plasma generation chamber (2), ring-shaped permanent magnets (13) are arranged such that a polarity pointing to the inside of the vacuum vessel (1) is a north pole and a polarity pointing to the outside of the vacuum vessel (1) is a south pole.Type: GrantFiled: July 29, 2011Date of Patent: July 2, 2013Assignee: Canon Anelva CorporationInventors: Kazuyuki Iori, Yukito Nakagawa
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Patent number: 8298381Abstract: A vacuum process for etching a metal strip running over a backing roll facing a counterelectrode by magnetron sputtering, and a vacuum chamber etching installation implementing the process. A plasma is created in a gas close to the metal strip so as to generate radicals and/or ions that act on the strip, and at least one closed magnetic circuit, the width of which is approximately equal to that of the metal strip, is selected from a series of at least two closed magnetic circuits of different and fixed widths, then the selected magnetic circuit is positioned so as to face the metal strip, and then the etching of the moving metal strip is carried out.Type: GrantFiled: October 26, 2006Date of Patent: October 30, 2012Assignee: Arcelormittal FranceInventors: Hugues Cornil, Benoit Deweer, Claude Maboge, Jacques Mottoulle
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Patent number: 8246798Abstract: According to the present invention, it can be switched whether or not to apply a magnetic field to a substrate depending on a material of a film to be formed, and a magnetic layer and a non-magnetic layer can be formed in the same chamber.Type: GrantFiled: March 2, 2009Date of Patent: August 21, 2012Assignee: Canon Anelva CorporationInventors: Hiroyuki Hosoya, Koji Tsunekawa, Yoshinori Nagamine
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Publication number: 20120097526Abstract: A rotary magnetron is provided with an end block for rotatably supporting a target on an axis of rotation. An elongate magnetic bar assembly is disposed within the target. A stator shaft is affixed in the end block; one end of the stator shaft is coupled to the elongate magnetic bar assembly to support the elongate magnetic bar assembly. The target has a target shaft extending over the stator shaft and rotatable thereon around the axis of rotation. The rotary magnetron is characterized by a rotating coolant seal disposed inside the target shaft proximate the one end of the stator shaft and proximate to the elongate magnetic bar assembly.Type: ApplicationFiled: April 5, 2010Publication date: April 26, 2012Inventors: John E. Madocks, Jeffrey F. Vogler
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Publication number: 20110056912Abstract: Uniformity in a plasma process can be increased by increasing a plasma confining effect by a cusp magnetic field over the whole circumference. There is provided a plasma processing apparatus which performs a process on a substrate by generating plasma of a processing gas in a depressurized processing chamber. The apparatus includes a magnetic field generation unit 200 including two magnet rings 210 and 220 vertically spaced from each other and arranged along a circumferential direction of the processing chamber. Each of the magnet rings includes multiple segments 212 and 222 of which magnetic poles are alternately reversed two by two along a circumferential direction of an inner surface of the magnet ring. In the magnetic field generation unit 200, arrangement of upper and lower magnetic poles is changed by rotating the lower magnet ring 220 in a circumferential direction with respect to the upper magnet ring 210.Type: ApplicationFiled: September 3, 2010Publication date: March 10, 2011Applicant: TOKYO ELECTRON LIMITEDInventor: Shoichiro Matsuyama
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Publication number: 20100230281Abstract: Provided are a thin film forming apparatus and a thin film forming method. The thin film forming apparatus comprises a first electrode provided for etching a thin film formed on the substrate, a second electrode provided for forming a plasma in the internal space, a third electrode provided for focusing the plasma, and a control unit controlling a voltage to be applied to the first through third electrodes.Type: ApplicationFiled: March 12, 2010Publication date: September 16, 2010Inventors: Jeonghee Park, Yongho Ha, Hyeyoung Park, Hyun-Suk Kwon
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Publication number: 20100186670Abstract: There is provided a plasma formation region control apparatus, with which a large-scale plasma can be obtained under a high pressure with ease and at low cost. The plasma formation region control apparatus comprises a microwave oscillator, an antenna connected to the microwave oscillator, and controller for controlling the position of each of the microwave oscillator and the antenna. The controller positions the antenna towards a plasma formation region in accordance with a specification for a plasma region for respective points in time t; establishes a driving sequence for the microwave oscillator based on the temperature state of the specified plasma; and drives the microwave oscillator according to the driving sequence.Type: ApplicationFiled: July 12, 2008Publication date: July 29, 2010Applicant: IMAGINEERING, INC.Inventor: Yuji Ikeda
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Patent number: 7744735Abstract: An iPVD apparatus (20) is programmed to deposit material (10) onto semiconductor substrates (21) by cycling between deposition and etch modes within a vacuum chamber (30). Static magnetic fields are kept to a minimum during at least the etch modes, at least less than 150 Gauss, typically less than 50 Gauss, and preferably in the range of 0-10 Gauss. Static magnetic fields during deposition modes may be more than 150 Gauss, in the range of 0-50 Gauss, or preferably 20-30 Gauss, and may be the same as during etch modes or switched between a higher level during deposition modes and a lower level, including zero, during etch modes. Such switching may be by switching electromagnet current or by moving permanent magnets, by translation or rotation. Static magnetic fields are kept to a minimum during at least the etch modes, at least less than 150 Gauss, typically less than 50 Gauss, and preferably in the range of 1-10 Gauss. The modes may operate at different power and pressure parameters.Type: GrantFiled: March 5, 2004Date of Patent: June 29, 2010Assignee: Tokyo Electron LimitedInventors: Rodney Lee Robison, Jacques Faguet, Bruce Gittleman, Tugrul Yasar, Frank Cerio, Jozef Brcka
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Publication number: 20100140085Abstract: A magnetron plasma processing apparatus has a baffle plate interposed between a processing space and a gas exhaust port so as to confine a plasma in the processing space in a processing chamber. The baffle plate has through holes allowing the processing space and the gas exhaust port to communicate with each other. The baffle plate is provided along lines of magnetic force of a magnetic field at a position where the plate is located.Type: ApplicationFiled: February 12, 2010Publication date: June 10, 2010Applicant: TOKYO ELECTRON LIMITEDInventors: Hidenori SATO, Daisuke HAYASHI
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Publication number: 20100051448Abstract: A vacuum process for etching a metal strip running over a backing roll facing a counterelectrode by magnetron sputtering, and a vacuum chamber etching installation implementing the process. A plasma is created in a gas close to the metal strip so as to generate radicals and/or ions that act on the strip, and at least one closed magnetic circuit, the width of which is approximately equal to that of the metal strip, is selected from a series of at least two closed magnetic circuits of different and fixed widths, then the selected magnetic circuit is positioned so as to face the metal strip, and then the etching of the moving metal strip is carried out.Type: ApplicationFiled: October 26, 2006Publication date: March 4, 2010Applicant: ArcelorMittal FranceInventors: Hugues Cornil, Benoit Deweer, Claude Maboge, Jacques Mottoulle
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Publication number: 20100012477Abstract: The present invention relates to a surface modification of carbon fibers, and more particularly to, such a method of modifying the surface of carbon fibers by irradiating an electromagnetic wave to the carbon fibers. When an electromagnetic wave of a high frequency is irradiated to the carbon fibers, the carbon fibers are modified. The modified carbon fibers have an increased surface roughness. In case of manufacturing a composite material by mixing the carbon fibers with a matrix, the modified carbon fibers are relatively greatly improved in physical property as compared to the original carbon fibers prior to the modification.Type: ApplicationFiled: December 4, 2006Publication date: January 21, 2010Applicants: POSTECH ACADEMY-INDUSTRY FOUNDATION, POSTECH FOUNDATIONInventors: Yoo Jin Lee, Kun Hong Lee
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Publication number: 20090277780Abstract: The present invention relates to a sputtering cathode of the magnetron type and a control method for such a device for, in a vacuum process, depositing very thin films on substrates for a wide variety of commercial and scientific purposes including production of circular optical discs such as CD- or DVD-discs. In particular, the sputtering device comprises a magnet system disposed behind the target and comprising at least three permanent magnets connected to each other by means of a yoke, each of the permanent magnets having a different polarity, wherein the permanent magnets is adapted to interact with each other so as to form a magnetic flux line plateau having magnetic flux lines being substantially parallel with the sputtering surface of the target.Type: ApplicationFiled: June 26, 2007Publication date: November 12, 2009Applicant: M2 Engineering ABInventor: Jan Jåderberg
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Publication number: 20090242131Abstract: The invention relates to an ECR plasma source comprising a coaxial microwave supply line with an internal conductor and an external conductor, wherein the internal conductor with one end as the antenna passes through a vacuum flange in insulated fashion, which vacuum flange closes off an opening in the wall to the plasma space. A multipole magnet arrangement is provided coaxially with respect to the microwave supply line and its magnetic fields pass through the vacuum flange and form an annular-gap magnetic field in the plasma space coaxially with respect to the antenna.Type: ApplicationFiled: August 8, 2007Publication date: October 1, 2009Applicant: Roth & Rau AGInventors: Joachim Mai, Valerl Fell, Bernd Rau
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Patent number: 7556718Abstract: This invention relates to ionized PVD processing of semiconductor wafers and provides conditions for highly uniform deposition-etch process sequence and coverage capabilities of high aspect ratio (HAR) features within a single processing chamber. A plasma is generated and maintained by an inductively coupled plasma (ICP) source. A deposition process step is performed in which metal vapor is produced from a target of a PVD source. Location and sputter efficiency at the target surface is enhanced by moving a magnet pack to create a traveling or sweeping magnetic field envelope. The target is energized from a DC power supply and pressures effective for an efficient thermalization of the sputtered atoms (30<p<100 mTorr) are maintained in the chamber during deposition. A uniform thickness of the metal on the wafer is produced within each magnet sweeping cycle.Type: GrantFiled: June 22, 2004Date of Patent: July 7, 2009Assignee: Tokyo Electron LimitedInventor: Jozef Brcka
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Publication number: 20090145747Abstract: A magnetron sputtering method for vacuum coloring a metal strip passing above at least one conductive counter electrode in a vacuum chamber. The method creates a plasma in a gas close to the metal strip, such as to generate radicals and/or ions that act on the strip, a magnetic confinement circuit being positioned above the strip. The counter electrode includes a mobile surface that can move in rotation and/or translation in relation to the metal strip, the surface being moved during the coloring process and being continuously cleaned by a cleaning device that is obscured from the plasma before being exposed once again to the plasma. A coloring installation can implement the method.Type: ApplicationFiled: January 22, 2009Publication date: June 11, 2009Applicant: AcrelorMittal FranceInventors: Hugues CORNIL, Benoit Deweer, Claude Maboge
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Publication number: 20080283394Abstract: A magnetron sputtering target, which can improve utilization rate and service life of target materials and can be used in a magnetron sputtering technology, is provided. The magnetron sputtering target comprises a target material, a target back plate, an insulating pad, a target cathode frame, one or more leading pole piece adjustment pads, and one or more juxtaposed magnets, which are stacked in order. The leading pole piece adjustment pad is disposed between the insulating pad and the magnet.Type: ApplicationFiled: April 4, 2008Publication date: November 20, 2008Applicant: BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventor: Yunxin ZHANG
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Publication number: 20080179183Abstract: A non-axisymmetric electromagnet coil used in plasma processing in which at least one electromagnet coil is not symmetric with the central axis of the plasma processing chamber with which it is used but is symmetric with an axis offset from the central axis. When placed radially outside of an RF coil, it may reduce the azimuthal asymmetry in the plasma produced by the RF coil. Axisymmetric magnet arrays may include additional axisymmetric electromagnet coils. One axisymmetric coil is advantageously placed radially inside of the non-axisymmetric coil to carry opposed currents. The multiple electromagnet coils may be embedded in a molded encapsulant having a central bore about a central axis providing the axisymmetry of the coils.Type: ApplicationFiled: January 31, 2007Publication date: July 31, 2008Applicant: Applied Materials, Inc.Inventors: CHRISTOPHER BOITNOTT, KEITH A. MILLER
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Publication number: 20080121620Abstract: A processing system includes a chamber. A plurality of processing stations in a center region in the chamber can be sequentially positioned when viewed in a first direction. The plurality of processing stations is configured to provide at least one processing step selected from the group consisting of thermal evaporation, thermal sublimation, sputtering, chemical vapor deposition (CVD), plasma enhanced chemical vapor deposition (PECVD), ion etching, or sputter etching. A plurality of substrates in the chamber can be sequentially positioned when viewed in the first direction. At least one of the plurality of substrate comprises a receiving surface configured to receive the at least one processing step from the plurality of processing stations.Type: ApplicationFiled: November 24, 2006Publication date: May 29, 2008Inventors: G. X. Guo, K. A. Wang
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Patent number: 7327089Abstract: A plasma source which includes a discharge cavity having a first width, where that discharge cavity includes a top portion, a wall portion, and a nozzle disposed on the top portion and extending outwardly therefrom, where the nozzle is formed to include an aperture extending through the top portion and into the discharge cavity, wherein the aperture has a second width, where the second width is less than the first width. The plasma source further includes a power supply, a conduit disposed in the discharge cavity for introducing an ionizable gas therein, and at least one cathode electrode connected to the power supply, where that cathode electrode is capable of supporting at least one magnetron discharge region within the discharge cavity. The plasma source further includes a plurality of magnets disposed adjacent the wall portion, where that plurality of magnets create a null magnetic field point within the discharge cavity.Type: GrantFiled: September 19, 2003Date of Patent: February 5, 2008Assignee: Applied Process Technologies, Inc.Inventor: John E. Madocks
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Patent number: 7320331Abstract: An in-situ plasma cleaning device (PCD) performs an atomic surface cleaning process to remove contaminants and/or to modify the cylindrical surfaces of both the target and substrate. The atomic cleaning process utilizes a plasma generated locally within the in-situ plasma cleaning device with suitable properties to clean both the target and substrate cylindrical surfaces either concurrently or separately. Moreover, the in-situ plasma cleaning device is designed to traverse the length of the target and the substrate cylindrical surfaces during the cleaning process.Type: GrantFiled: September 30, 2003Date of Patent: January 22, 2008Assignee: United States of America as represented by the Secrertary of the ArmyInventors: Michael J. Audino, Michael Cipollo, David Glocker, Kevin Miner, Patrick Vottis
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Patent number: 7118992Abstract: A method for manufacturing integrated circuits uses an atmospheric magnetic mirror plasma etching apparatus to thin a semiconductor wafer. In addition the process may, while thinning, both segregate and expose through-die vias for an integrated circuit chip. To segregate, the wafer may be partially diced. Then, the wafer may be tape laminated. Next, the backside of the wafer may be etched. As the backside material is removed, the partial dicing and through-die vias may be exposed. As such, the method reduced handling steps and increases yield. Furthermore, the method may be used in association with wafer level processing and flip chip with bump manufacturing.Type: GrantFiled: August 9, 2004Date of Patent: October 10, 2006Assignee: iFire Technologies, Inc.Inventors: Terry R. Turner, James D. Spain, Richard M. Banks
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Patent number: 7052583Abstract: A magnetron cathode and a sputtering apparatus including the same are provided. The magnetron cathode includes three or more magnet units, each of which comprises a single magnet or a plurality of magnets having the same poles facing toward the same direction, wherein one magnet unit is disposed around the outer circumference of another magnet unit and adjacent magnet units have opposite poles facing toward the same direction. Uniform magnetic field distribution is obtained. Therefore, the erosion profile of a target is wide and uniform.Type: GrantFiled: January 13, 2004Date of Patent: May 30, 2006Assignee: Samsung Electronics Co., Ltd.Inventors: Sergiy Yakovlevich Navala, Yuri Nikolaevich Tolmachev, Dong-joon Ma, Tae-wan Kim
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Patent number: 7015413Abstract: A plasma generation system that is capable of generating uniform high-density plasma includes a microwave generator for generating microwaves, a refractor for altering a direction of propagation of the microwaves, and an electromagnetic unit for applying a magnetic field to plasma formed by the microwaves to generate electron cyclotron resonance (ECR).Type: GrantFiled: January 13, 2004Date of Patent: March 21, 2006Assignee: Samsung Electronics Co., Ltd.Inventors: Andrei Petrin, Ji-hyun Hur, Jai-kwang Shin
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Patent number: 6988306Abstract: Provided is a method of forming ferromagnetic sputter targets and sputter target assemblies having a uniform distribution of magnetic leakage flux. The method includes providing a ferromagnetic sputter workpiece and hot rolling the workpiece to a substantially circular configuration sputter target; machining a taper in a surface of the sputter target to have a thickness gradient of the sputter target, where the center of the sputter target is about 0.020 to about 0.005 inches thinner than the edge of the sputter target, and where the magnetic leakage flux across the sputter target is uniformly distributed.Type: GrantFiled: December 1, 2003Date of Patent: January 24, 2006Assignee: Praxair Technology, Inc.Inventors: Holger J. Koenigsmann, Paul S. Gilman, Ivan Ward
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Patent number: 6951821Abstract: A processing system and method for chemically treating a substrate, wherein the processing system comprises a temperature controlled chemical treatment chamber, and an independently temperature controlled substrate holder for supporting a substrate for chemical treatment. The substrate holder is thermally insulated from the chemical treatment chamber. The substrate is exposed to a gaseous chemistry, without plasma, under controlled conditions including wall temperature, surface temperature and gas pressure. The chemical treatment of the substrate chemically alters exposed surfaces on the substrate.Type: GrantFiled: November 12, 2003Date of Patent: October 4, 2005Assignee: Tokyo Electron LimitedInventors: Thomas Hamelin, Jay Wallace, Arthur Laflamme, Jr.
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Patent number: 6949174Abstract: A milling apparatus is provided in which temperature rise of a treatment-object in milling treatment, especially of the substrate thereof, is prevented. In the apparatus, ionization mechanism 2 comprises casing 20d having an opening at the center portion of the face thereof opposing to substrate 5 held by substrate holder 6; a filament is placed at the position where the straight line drawn from the filament to substrate 5 is intercepted by casing 20d; and electromagnets 31, 32 are provided around ionization mechanism 2 for generating a magnetic field to produce magnetic lines extending through opening 20j to substrate 5.Type: GrantFiled: May 27, 2003Date of Patent: September 27, 2005Assignee: Canon Kabushiki KaishaInventors: Hirohito Yamaguchi, Masahiro Kanai, Atsushi Koike, Katsunori Oya
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Patent number: 6937127Abstract: Techniques for producing and manipulating magnetic fields. The techniques employ the mutual repulsion of magnetic fields to create uniform magnetic fields and to manipulate the uniform magnetic fields. The uniform magnetic field is created between two planar magnets. The planar magnets have cores which describe a closed curve. Like poles of the electromagnets are connected by the cores. When the electromagnets are activated, repulsion between the magnetic fields generated by the electromagnets creates a magnetic field which extends above and below the planes of the planar magnets. If the planar magnets are positioned parallel to each other and aligned so that the magnetic fields generated by the planar magnets repel each other in the space between the planar magnets, the repulsion between the fields generates a resultant field.Type: GrantFiled: September 9, 2003Date of Patent: August 30, 2005Assignee: Oster Magnetics, Inc.Inventor: Eugene L. Oster
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Patent number: 6927358Abstract: In one aspect of the invention is a method to create a vacuum seal with extended lifetime to form a dielectric break in a vacuum chamber. The method includes the use of an elastic dielectric seal to form a high vacuum seal. It also includes the use of different means to protect the vacuum seal from direct exposure to the plasma and to reactive gases present inside the plasma chamber. Furthermore, it includes the use of elements to ensure a proper compression of the elastic seal, and to avoid its expansion or contraction when the pressures on both sides of the seal are different.Type: GrantFiled: January 31, 2003Date of Patent: August 9, 2005Assignee: Advanced Energy Industries, Inc.Inventors: Juan Jose Gonzalez, Steve Dillon, Andrew Shabalin, Fernando Gustavo Tomasel
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Patent number: 6903511Abstract: Methods and apparatus for generating uniformly-distributed plasma are described. A plasma generator according to the invention includes a cathode assembly that is positioned adjacent to an anode and forming a gap there between. A gas source supplies a volume of feed gas and/or a volume of excited atoms to the gap between the cathode assembly and the anode. A power supply generates an electric field across the gap between the cathode assembly and the anode. The electric field ionizes the volume of feed gas and/or the volume of excited atoms that is supplied to the gap, thereby creating a plasma in the gap.Type: GrantFiled: May 6, 2003Date of Patent: June 7, 2005Assignee: Zond, Inc.Inventor: Roman Chistyakov
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Patent number: 6896775Abstract: Magnetically enhanced plasma processing methods and apparatus are described. A magnetically enhanced plasma processing apparatus according to the present invention includes an anode and a cathode that is positioned adjacent to the anode. An ionization source generates a weakly-ionized plasma proximate to the cathode. A magnet is positioned to generate a magnetic field proximate to the weakly-ionized plasma. The magnetic field substantially traps electrons in the weakly-ionized plasma proximate to the cathode. A power supply produces an electric field in a gap between the anode and the cathode. The electric field generates excited atoms in the weakly-ionized plasma and generates secondary electrons from the cathode. The secondary electrons ionize the excited atoms, thereby creating a strongly-ionized plasma.Type: GrantFiled: October 29, 2002Date of Patent: May 24, 2005Assignee: Zond, Inc.Inventor: Roman Chistyakov
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Patent number: 6864773Abstract: A magnet assembly for producing a varying magnetic field is provided wherein a plurality of permanent magnets are interposed between two members which are constructed of a ferromagnetic material. Each of the magnets is rotatable and has a north and south magnetic pole. Each of the magnets is disposed so that the north magnetic poles of the plurality of permanent magnets have a common magnetic orientation with respect to the first member. An orienter, such as, for example, a ring gear and pinion arrangement, is coupled to the magnets to change their common magnetic orientation with respect to the first member. The magnetic field projected by the assembly varies as a function of the orientation of the magnets.Type: GrantFiled: April 4, 2003Date of Patent: March 8, 2005Assignee: Applied Materials, Inc.Inventor: Mark A. Perrin
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Patent number: 6825437Abstract: When determining the presence of foreign particles in a processing chamber by radiating a laser beam inside a processing chamber and detecting scattered light from foreign particles within the processing chamber, the detection of scattered light is performed using a detecting lens having a wide field angle and deep focal depth. Accordingly, the detection of foreign particles floating in the processing chamber can be performed across a wide range, and with uniform sensitivity, with a detecting optical system having a simple constitution.Type: GrantFiled: August 30, 2002Date of Patent: November 30, 2004Assignee: Hitachi, Ltd.Inventors: Hiroyuki Nakano, Takeshi Arai, Toshihiko Nakata
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Patent number: 6805779Abstract: The present invention relates to a plasma generator that generates a plasma with a multi-step ionization process. The plasma generator includes an excited atom source that generates excited atoms from ground state atoms supplied by a feed gas source. A plasma chamber confines a volume of excited atoms generated by the excited atom source. An energy source is coupled to the volume of excited atoms confined by the plasma chamber. The energy source raises an energy of excited atoms in the volume of excited atoms so that at least a portion of the excited atoms in the volume of excited atoms is ionized, thereby generating a plasma with a multi-step ionization process.Type: GrantFiled: March 21, 2003Date of Patent: October 19, 2004Assignee: Zond, Inc.Inventor: Roman Chistyakov
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Patent number: 6773558Abstract: A fluorine generator includes a vacuum chamber filled with a working gas. An r-f antenna is positioned outside the chamber across a dielectric window from a potassium fluoride (KF) source located in the chamber. The r-f antenna radiates through the window to heat the working gas and sublime the PK source to create a plasma. Crossed electric and magnetic fields in the chamber drive the heavier potassium ions in the plasma toward a collector in the chamber while confining the lighter fluorine and working gas ions for evacuation from the chamber.Type: GrantFiled: October 15, 2002Date of Patent: August 10, 2004Assignee: Archimedes Technology Group, Inc.Inventors: Stephen F. Agnew, Sergei Putvinski
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Patent number: 6767436Abstract: A plasma-enhanced coaxial magnetron sputter-cleaning and coating assembly for sputter-cleaning and coating the interior surfaces of a cylindrical workpiece is provided. The apparatus sputter-coats the workpiece using a cylindrical sputtering material, the material having an interior and an exterior. The apparatus includes a core cooling system surrounded by a ring magnet assembly including a plurality of axially aligned ring magnets, with the core cooling system and the ring magnet assembly axially aligned with, and residing in the interior of, the cylindrical sputtering material. A cylindrical-shaped filament circumferentially surrounds the exterior of the cylindrical sputtering material. An anode comprised of a wire screen circumferentially surrounds, and is external to the filament; whereby the apparatus for plasma-enhanced coaxial magnetron sputter-cleaning and coating may be housed inside the workpiece in order to sputter-clean and coat the interior of the workpiece.Type: GrantFiled: September 25, 2002Date of Patent: July 27, 2004Assignee: HRL Laboratories, LLCInventor: Ronghua Wei
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Patent number: 6764575Abstract: When a substrate 30 is to be subjected to a magnetron plasma process, a dipole ring magnet 21 is provided, in which a large number of anisotropic segment magnets 22 are arranged in a ring-like shape around the outer wall of a chamber 1. A magnetic field gradient, wherein the magnetic field strength decreases from the E pole side toward the W pole side in a direction perpendicular to a magnetic field direction B, is formed in a plane perpendicular to the direction of an electric field between a pair of electrodes separated from each other. The anisotropic segment magnets have a first section a including anisotropic segment magnets arranged in the vicinity of a region A located outside an E pole side end of the process substrate with an N pole thereof being directed toward this region, and a second portion b including anisotropic segment magnets arranged with an S pole thereof being directed toward this region, to locally increase the magnetic field strengths of the first and second regions.Type: GrantFiled: March 4, 2002Date of Patent: July 20, 2004Assignees: Tokyo Electron Limited, Shin-Etsu Chemical Co., Ltd.Inventors: Tomomi Yamasaki, Hidetoshi Kimura, Junichi Arami, Hiroo Ono, Akira Koshiishi, Koji Miyata
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Publication number: 20030136664Abstract: A sputter etch system and a method of conducting a sputter etch. The sputter etch system includes an etch chamber with a wafer pedestal having a top surface to support a wafer and a magnet configured to provide a continuous magnetic field directed at the top surface of the wafer pedestal.Type: ApplicationFiled: December 31, 1997Publication date: July 24, 2003Inventors: BRETT E. HUFF, KEN SCHATZ, MIKE MAXIM, WILLIAM G. PETRO
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Patent number: 6551445Abstract: A parallel plate ECR plasma processing system is able to extend a plasma density region capable of keeping a continuous, uniform state. In this system, a first magnetic field-forming means formed of a solenoid coil and a second magnetic field-forming means are provided so that a the distribution of a direction of a magnetic line of flux on the surface of a planar plate is controlled by a combined magnetic field from the first and second magnetic field-forming means thereby controlling the distribution in degree of the interactions of the magnetic field and an electromagnetic wave. This control ensures the uniformity of a plasma under high density plasma formation conditions, thus enabling one to form a continuous plasma over a wide range of low to high densities. Thus, there can be realized a plasma processing system that ensures processing under wide plasma conditions including high-speed processing under high density conditions.Type: GrantFiled: September 19, 2000Date of Patent: April 22, 2003Assignee: Hitachi, Ltd.Inventors: Ken'etsu Yokogawa, Yoshinori Momonoi, Nobuyuki Negishi, Masaru Izawa, Shinichi Tachi
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Patent number: 6524448Abstract: The present invention relates to a system for executing a plasma-based sputtering method, such as for example a PVD (Physical Vapor Deposition) method. In a process chamber (1), a plasma (2) is produced in order to accelerate ionized particles, carried away from a sputter target (21), through the plasma (2) towards a substrate (3), using an electrical field. In the process chamber (1), between the plasma (2) and the substrate (3) a magnetic field component (6) is produced by that is situated parallel to a substrate surface (5). Through the magnetic field component (6), the angular distribution of the ionized particles is deflected from its flight path perpendicular to the substrate surface, so that impact angles are produced that have a greater angular scattering.Type: GrantFiled: April 11, 2001Date of Patent: February 25, 2003Assignee: Infineon Technologies AGInventors: Ralf-Peter Brinkmann, Alfred Kersch
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Patent number: 6521082Abstract: Within both a magnetically enhanced plasma apparatus and a magnetically enhanced plasma method there is employed: (1) a repetitive and geometrically selective pulsing of a magnetic field from a first level to a second level within a reactor chamber; and (2) a repetitive pulsing of a radio frequency power from a first level to a second level within the reactor chamber when repetitively and geometrically selectively pulsing from the first level to the second level the magnetic field within the reactor chamber. The concurrent repetitive pulsings provide a plasma within the reactor chamber with enhanced plasma uniformity and enhanced ion energy control.Type: GrantFiled: April 16, 2002Date of Patent: February 18, 2003Assignee: Applied Materials Inc.Inventors: Michael S Barnes, Hongqing Shan
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Patent number: 6514377Abstract: A magnetron reactive ion etching apparatus comprises: an electrode unit including electrodes facing each other through a semiconductor device; a high-frequency power source forming an electric field on the electrode unit; a dipole ring magnet; and a switching mechanism. The dipole ring magnet forms the first magnetic field state, including a magnetic field in a direction perpendicular to a direction of the electric field or in a direction parallel to the semiconductor device, and the second magnetic field state, including a magnetic field whose strength at the periphery of the surface of the semiconductor device is so satisfactory that an electron Larmor radius is larger than the mean free path of electrons. The first magnetic field state is switched to the second magnetic field state at a predetermined timing by the switching mechanism which is controlled by a controller.Type: GrantFiled: September 7, 2000Date of Patent: February 4, 2003Assignee: Tokyo Electron LimitedInventor: Tamotsu Morimoto
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Patent number: 6475333Abstract: A discharge plasma processing device comprising a chamber with an evacuation system, a magnetic field generation system and an electric field application system with which the feature of operation is first to form a magnetic neutral line in the vacuum chamber and second to produce a plasma along the magnetic neutral line by controlling the shape of the line, its position related to an object to be processed and the plasma parameters is presented as useful device for many kinds of plasma processing like as sputtering, etching and plasma enhanced CVD as freely programmed, for instance extremely in uniform on the surface of the object.Type: GrantFiled: July 25, 1994Date of Patent: November 5, 2002Assignee: Nihon Shinku Gijutsu Kabushiki KaishaInventor: Taijiro Uchida