With Chamber Patents (Class 219/121.43)
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Patent number: 8324525Abstract: A method processing a workpiece in a plasma reactor chamber in which a first one of plural applied RF plasma powers is modulated in accordance with a time-varying modulation control signal corresponding to a desired process transient cycle. The method achieves a reduction in reflected power by modulating a second one of the plural plasma powers in response to the time-varying modulation control signal.Type: GrantFiled: May 29, 2008Date of Patent: December 4, 2012Assignee: Applied Materials, Inc.Inventors: Steven C. Shannon, Kartik Ramaswamy, Daniel J. Hoffman, Matthew L. Miller, Kenneth S. Collins
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Patent number: 8319141Abstract: The present invention is a cooling block that forms an electrode for generating a plasma for use in a plasma process, and includes a channel for a cooling liquid, the cooling block comprising: a first base material and a second base material respectively made of aluminum, at least one of the first and second base materials having a recess for forming a channel for a cooling liquid; and a diffusion bonding layer, in which zinc is diffused in aluminum, and an anti-corrosion layer of a zinc oxide film, the layers being formed by interposing zinc between the first and second base materials, and by bonding the first and second base materials with zinc interposed therebetween in a heating atmosphere containing oxygen.Type: GrantFiled: September 7, 2010Date of Patent: November 27, 2012Assignee: Tokyo Electron LimitedInventors: Toshifumi Ishida, Daisuke Hayashi
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Patent number: 8299390Abstract: A number of RF power transmission paths are defined to extend from an RF power source through a matching network, through a transmit electrode, through a plasma to a number of return electrodes. A number of tuning elements are respectively disposed within the number of RF power transmission paths. Each tuning element is defined to adjust an amount of RF power to be transmitted through the RF power transmission path within which the tuning element is disposed. A plasma density within a vicinity of a particular RF power transmission path is directly proportional to the amount of RF power transmitted through the particular RF power transmission path. Therefore, adjustment of RF power transmitted through the RF power transmission paths, as afforded by the tuning element, enables control of a plasma density profile across a substrate.Type: GrantFiled: January 29, 2010Date of Patent: October 30, 2012Assignee: Lam Research CorporationInventors: Rajinder Dhindsa, Felix Kozakevich, Lumin Li, Dave Trussell
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Patent number: 8299391Abstract: Embodiments of field enhanced inductively coupled plasma reactors and methods of use of same are provided herein. In some embodiments, a field enhanced inductively coupled plasma processing system may include a process chamber having a dielectric lid and a plasma source assembly disposed above the dielectric lid. The plasma source assembly includes one or more coils configured to inductively couple RF energy into the process chamber to form and maintain a plasma therein, one or more electrodes configured to capacitively couple RF energy into the process chamber to form the plasma therein, wherein the one or more electrodes are electrically coupled to one of the one or more coils, and an RF generator coupled to the one or more inductive coils and the one or more electrodes. In some embodiments, a heater element may be disposed between the dielectric lid and the plasma source assembly.Type: GrantFiled: July 30, 2008Date of Patent: October 30, 2012Assignee: Applied Materials, Inc.Inventors: Valentin N. Todorow, Samer Banna, Kartik Ramaswamy, Michael D. Willwerth
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Patent number: 8283593Abstract: A wire cleaning guide for guiding a wire in a feed direction and to clean the wire, including a gas supply nozzle for supplying plasma generating gas, a plasma generating chamber with plasma generating gas supplied from the gas supply nozzle thereto for transforming the plasma generating gas into plasma by energizing a bonding wire that passes there through to clean the wire by means of the plasma gas, and wire-feeder-side and bonding-tool-side guide holes for guiding the wire in the feed direction, the diameter of the wire-feeder-side guide hole is greater than that of the bonding-tool-side guide hole so that the outflow rate of gas after wire cleaning flowing between the wire-feeder-side guide hole and the wire is greater than that of gas after wire cleaning flowing between the bonding-tool-side guide hole and the wire.Type: GrantFiled: February 14, 2008Date of Patent: October 9, 2012Assignee: Kabushiki Kaisha ShinkawaInventors: Masayuki Horino, Kazuo Fujita
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Patent number: 8263897Abstract: A device for sustaining a plasma in a torch is provided. In certain examples, the device comprises a first electrode configured to couple to a power source and constructed and arranged to provide a loop current along a radial plane of the torch. In some examples, the radial plane of the torch is substantially perpendicular to a longitudinal axis of the torch.Type: GrantFiled: December 23, 2008Date of Patent: September 11, 2012Assignee: Perkinelmer Health Sciences, Inc.Inventor: Peter J. Morrisroe
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Publication number: 20120223060Abstract: In an inductively coupled plasma processing apparatus, an RF antenna 54 provided on a dielectric window 52 is split into an inner coil 58, an intermediate coil 60, and an outer coil 62 in a radial direction. When traveling along each of the coils from a high frequency power supply 72 to a ground potential member via a RF power supply line 68, the RF antenna 54, and an earth line 70, a direction passing through the inner coil 58 and the outer coil 62 is a counterclockwise direction, whereas a direction passing through the intermediate coil 60 is a clockwise direction. Further, a variable intermediate capacitor 86 and a variable outer capacitor 88 are electrically connected in series with the intermediate coil 60 and the outer coil 62, respectively, between the first and second nodes NA and NB.Type: ApplicationFiled: March 2, 2012Publication date: September 6, 2012Applicant: Tokyo Electron LimitedInventor: Yohei Yamazawa
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Patent number: 8257548Abstract: A mechanism for adjusting an orientation of an electrode in a plasma processing chamber is disclosed. The plasma processing chamber may be utilized to process at least a substrate, which may be inserted into the plasma processing chamber in an insertion direction. The mechanism may include a support plate disposed outside a chamber wall of the plasma processing chamber and pivoted relative to the chamber wall. The support plate may have a first thread. The mechanism may also include an adjustment screw having a second thread that engages the first thread. Turning the adjustment screw may cause translation of a portion of the support plate relative to the adjustment screw. The translation of the portion of the support plate may cause rotation of the support plate relative to the chamber wall, thereby rotating the electrode with respect to an axis that is orthogonal to the insertion direction.Type: GrantFiled: July 3, 2008Date of Patent: September 4, 2012Assignee: Lam Research CorporationInventor: James E. Tappan
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Patent number: 8242405Abstract: A microwave plasma processing apparatus has a microwave antenna in which a wavelength-shortening plate and a cooling portion of a cooling jacket are arranged adjacent to each other.Type: GrantFiled: June 24, 2009Date of Patent: August 14, 2012Assignee: Tokyo Electron LimitedInventor: Shinya Nishimoto
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Patent number: 8217299Abstract: A system and method for over-voltage protection is described. In one embodiment of the invention, an apparatus includes an output port configured to deliver power to a plasma chamber to ignite a plasma. The apparatus also includes a shunt switch in parallel with the output port and a processor configured to receive an indicator of an arc in the plasma. The processor is configured to close the shunt switch for a period of time to divert current away from the arc. The processor is also configured to trigger a pulse of the shunt switch to limit a voltage of an increasing voltage condition associated with the arc.Type: GrantFiled: February 22, 2007Date of Patent: July 10, 2012Assignee: Advanced Energy Industries, Inc.Inventors: Milan Ilic, Vladislav V. Shilo, Robert Brian Huff
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Patent number: 8207470Abstract: Provided is an apparatus for generating remote plasma, which can improve thin-film quality by preventing an arc at a bias electrode. The apparatus includes a radio frequency (RF) electrode installed inside an upper portion of a chamber, a bias electrode installed apart from the RF electrode, and including a plurality of through holes through which plasma passes, wherein a bias power is supplied to the bias electrode, a plasma generating unit formed between the RF electrode and the bias electrode, wherein a plasma gas is supplied to the plasma generating unit, and a ground electrode installed under and spaced apart from the bias electrode, and including plasma through holes corresponding to the through holes of the bias electrode, wherein a pulsed DC bias of a second voltage level, which has a first voltage level periodically, is applied to the bias electrode.Type: GrantFiled: August 25, 2009Date of Patent: June 26, 2012Assignee: Industry-University Cooperation Foundation Hanyang UniversityInventors: Hyeong-Tag Jeon, Sang-Hyun Woo, Hyung-Chul Kim, Chin-Wook Chung
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Patent number: 8173928Abstract: In a processing apparatus for performing a specified process on a target object at a predetermined process pressure, the apparatus includes an evacuable processing chamber having a gas exhaust port formed in a bottom portion thereof; a mounting table provided within the processing chamber for holding the target object; a pressure control valve connected to the gas exhaust port, the pressure control valve including a slide-type valve body for changing an area of an opening region of a valve port; and a gas exhaust system connected to the pressure control valve. The pressure control valve is eccentrically arranged such that a center axis of the mounting table lies within an opening region of the pressure control valve formed over a practical use region of a valve opening degree of the pressure control valve.Type: GrantFiled: March 5, 2007Date of Patent: May 8, 2012Assignee: Tokyo Electron LimitedInventors: Toshihisa Nozawa, Tamaki Yuasa
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Patent number: 8164033Abstract: A stage onto which is electrostatically attracted a substrate to be processed in a substrate processing apparatus, which enables the semiconductor device yield to be improved. A temperature measuring apparatus 200 measures a temperature of the substrate to be processed. A temperature control unit 400 carries out temperature adjustment on the substrate to be processed such as to become equal to a target temperature based on a preset parameter. A temperature control unit 400 controls the temperature of the substrate to be processed by controlling the temperature adjustment by the temperature control unit 400 based on a measured temperature measured by the temperature measuring apparatus 200.Type: GrantFiled: April 29, 2011Date of Patent: April 24, 2012Assignee: Tokyo Electron LimitedInventors: Chishio Koshimizu, Tomohiro Suzuki
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Patent number: 8153926Abstract: An etching method and an etching system are adapted to produce a high etch selectivity for a mask, an excellent anisotropic profile and a large etching depth. An etching system according to the invention comprises a floating electrode arranged vis-à-vis a substrate electrode in a vacuum chamber and held in a floating state in terms of electric potential, a material arranged at the side of the floating electrode facing the substrate electrode to form an anti-etching film and a control unit for intermittently applying high frequency power to the floating electrode.Type: GrantFiled: March 31, 2010Date of Patent: April 10, 2012Assignee: ULVAC, Inc.Inventors: Yasuhiro Morikawa, Toshio Hayashi, Koukou Suu
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Patent number: 8142521Abstract: An apparatus for fabricating thin films on substrate panels includes a deposition chamber enclosed by sidewalls, a lid, and a base. The apparatus includes a mixing chamber disposed above the lid and configured to receive vapor species and form a mixed vapor. The mixing chamber is coupled with the deposition chamber via inlets through the lid, including a diffuser plate. Two heater plates disposed side by side on the base supporting and heating two substrates.Type: GrantFiled: March 16, 2011Date of Patent: March 27, 2012Assignee: Stion CorporationInventors: Robert D. Wieting, Kenneth B. Doering, Jurg Schmitzburger
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Patent number: 8138445Abstract: In a plasma processing apparatus, a first electrode is attached to a grounded evacuable processing chamber via an insulating material or a space and a second electrode disposed in parallel with the first electrode spaced apart therefrom in the processing chamber, the second electrode supporting a target substrate to face the first electrode. A first radio frequency power supply unit applies a first radio frequency power of a first frequency to the second electrode, and a second radio frequency power supply unit applies a second radio frequency power of a second frequency lower than the first frequency to the second electrode. Further, a processing gas supply unit supplies a processing gas to a processing space formed by the first and the second electrode and a sidewall of the processing chamber. Moreover, an inductor electrically is connected between the first electrode and a ground potential.Type: GrantFiled: March 30, 2007Date of Patent: March 20, 2012Assignee: Tokyo Electron LimitedInventors: Naoki Matsumoto, Chishio Koshimizu, Yoshinobu Hayakawa, Hidetoshi Hanaoka, Manabu Iwata, Satoshi Tanaka
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Patent number: 8138444Abstract: Provided is a plasma processing apparatus including a chamber, a lower electrode, an upper electrode, and a substrate sensor. The chamber is configured to provide a reaction space. The lower electrode is disposed at a lower region in the chamber to mount a substrate thereon. The upper electrode is disposed at an upper region in the chamber to be opposite to the lower electrode. The substrate sensor is provided on the chamber to sense the substrate. Herein, the upper electrode includes an electrode plate and an insulating plate attached on the bottom of the electrode plate, and at least one guide hole is formed in the upper electrode to guide light output from the substrate sensor toward the substrate.Type: GrantFiled: June 20, 2008Date of Patent: March 20, 2012Assignee: Tes Co., Ltd.Inventor: Sung Ryul Kim
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Patent number: 8124907Abstract: Embodiments of the invention include a load lock chamber having a decoupled slit valve door seal compartment. In one embodiment, a load lock chamber includes a main assembly, a first slit valve door seal compartment and a seal assembly. The main assembly has a substrate transfer cavity formed therein. Two substrate access ports are formed through the main assembly and fluidly couple to the cavity. The first slit valve door seal compartment has an aperture disposed adjacent to and aligned with one of the access ports. The first slit valve door seal compartment is decoupled from the main assembly. The seal assembly couples the first slit valve door seal compartment to the main assembly.Type: GrantFiled: July 24, 2007Date of Patent: February 28, 2012Assignee: Applied Materials, Inc.Inventors: Jae-Chull Lee, Suhail Anwar, Shinichi Kurita
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Patent number: 8124906Abstract: A method and apparatus for processing metal bearing gases involves generating a toroidal plasma in a plasma chamber. A metal bearing gas is introduced into the plasma chamber to react with the toroidal plasma. The interaction between the toroidal plasma and the metal bearing gas produces at least one of a metallic material, a metal oxide material or a metal nitride material.Type: GrantFiled: July 29, 2009Date of Patent: February 28, 2012Assignee: MKS Instruments, Inc.Inventors: William M. Holber, John A. Smith, Xing Chen, Donald K. Smith
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Patent number: 8093529Abstract: A method of stably controlling the temperature of a sample placed on a sample stage to a desired temperature by estimating a sample temperature accurately, the sample stage including a refrigerant flow path to cool the sample stage, a heater to heat the sample stage, and a temperature sensor to measure the temperature of the sample stage. This method comprises the steps of: measuring in advance the variation-with-time of supply electric power to the heater, temperature of the sample, and temperature of the temperature sensor, without plasma processing; approximating the relation among the measured values using a simultaneous linear differential equation; estimating a sample temperature from the variation-with-time of sensor temperature y1, heater electric power u1, and plasma heat input by means of the Luenberger's states observer based on the simultaneous linear differential equation used for the approximation; and performing a feedback control of sample temperature using the estimated sample temperature.Type: GrantFiled: August 19, 2008Date of Patent: January 10, 2012Assignee: Hitachi High-Technologies CorporationInventors: Naoyuki Kofuji, Tsunehiko Tsubone
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Patent number: 8084705Abstract: An electrode assembly and method of centering an outer ring around an electrode assembly in a plasma reaction chamber used in semiconductor substrate processing. The method includes positioning the outer ring around an outer surface of a backing member of the electrode assembly, and inserting at least one centering element between the outer ring and the backing member. The centering element can be a plurality of spring-loaded centering elements received in a cavity on the outer surface of the backing member, the centering elements having a first end adapted to contact the outer ring and a second end adapted to receive a spring. The outer ring surrounds an outer surface of the backing member, such that the plurality of spring-loaded centering elements are positioned between the outer surface of the backing member and an inner surface of the outer ring.Type: GrantFiled: December 14, 2010Date of Patent: December 27, 2011Assignee: Lam Research CorporationInventors: Dean J. Larson, Daniel Brown, Keith Comendant, Victor Wang
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Patent number: 8084720Abstract: A method for multi-step temperature control of a substrate includes selecting a first set-point temperature and a second set-point temperature for the substrate, and selecting a first PID parameter set including a first proportional constant KP1, a first integral constant KI1 and a first derivative constant KD1, and selecting a second PID parameter set including a second proportional constant KP2, a second integral constant KI2 and a second derivative constant KD2. The substrate is placed on a substrate holder, the temperature of the substrate is adjusted to the first set-point temperature and the substrate is processed for a first period of time at the first set-point temperature.Type: GrantFiled: September 23, 2010Date of Patent: December 27, 2011Assignee: Tokyo Electron LimitedInventor: Mitsunori Ohata
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Patent number: 8080760Abstract: A plasma processing chamber includes a cantilever assembly configured to neutralize atmospheric load. The chamber includes a wall surrounding an interior region and having an opening formed therein. A cantilever assembly includes a substrate support for supporting a substrate within the chamber. The cantilever assembly extends through the opening such that a portion is located outside the chamber. The chamber includes an actuation mechanism operative to move the cantilever assembly relative to the wall.Type: GrantFiled: January 25, 2010Date of Patent: December 20, 2011Assignee: Lam Research CorporationInventors: Rajinder Dhindsa, Eric H. Lenz, Andy W. DeSepte, Lumin Li
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Patent number: 8063337Abstract: An apparatus for use in mass spectrometry comprising an injector body, an injection tube coupled to the injector body, and a shielding assembly disposed between the injector body and the injection tube. The shielding apparatus is suitable for shielding the injector body from heat generated by a plasma source.Type: GrantFiled: March 23, 2007Date of Patent: November 22, 2011Assignee: Elemental Scientific, Inc.Inventor: Daniel R. Wiederin
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Patent number: 8058585Abstract: A plasma processing method includes the steps of: loading a substrate on a lower electrode, the substrate having a resist mask formed on a transcription film; supplying a processing gas into a processing chamber; forming a magnetic field, which is oriented toward one direction and perpendicular to a line connecting an upper and the lower electrode; supplying a high frequency power to the lower electrode in the processing chamber to thereby form an electric field; converting the processing gas into a plasma by a magnetron discharge caused by a presence of an orthogonal electromagnetic field; and forming lenses on the transcription film by using the plasma. The high frequency power is supplied to the lower electrode while controlling the magnitude of the electric power divided by a surface area of the substrate to be in a range from about 1200 W/31415.9 mm2 to 2000 W/31415.9 mm2.Type: GrantFiled: March 12, 2007Date of Patent: November 15, 2011Assignee: Tokyo Electron LimitedInventors: Hiroki Amemiya, Akihito Toda, Hiroshi Nagahata
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Patent number: 8053700Abstract: An improved plasma vessel (i.e., plasma applicator) that provides effective cooling includes a plurality of generally linear tubes having a dielectric interior fluidly connected together by dielectric connectors. The tubes and connectors are joined together to form a leak-tight plasma vessel. A cooling system surrounding the improved plasma vessel includes a rigid cooling plate and a deformable thermal transfer material disposed between the plasma vessel and the cooling plate. After use or at an operator's discretion, the plasma vessel can be removed from the cooling system and a new vessel may be inserted in its place. Alternatively, the used vessel may be refurbished and re-inserted into the cooling system. The new or refurbished vessel may or may not be of the same size or configuration as the used vessel. Thermal contact between the cooling system and the new or refurbished vessel, however is maintained through the deformable thermal transfer material.Type: GrantFiled: September 29, 2006Date of Patent: November 8, 2011Assignee: MKS Instruments, Inc.Inventors: Jack J. Schuss, Xing Chen
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Patent number: 8049144Abstract: A system for coating a substrate includes a heater that heats the substrate. The heater includes a two-dimensional array of a plurality of heat sources which supply heat to the substrate when the substrate is in the presence of the array of heat sources. The heater further includes a controller that controls the operation of each heat source to heat a localized area of the surface of the substrate according to a predetermined temperature profile for the substrate.Type: GrantFiled: March 18, 2009Date of Patent: November 1, 2011Assignee: Exatec LLCInventor: Steven M. Gasworth
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Patent number: 8039772Abstract: A microwave resonance plasma generating apparatus, a plasma processing system having the same and a method of generating a microwave resonance plasma are provided. The apparatus includes a microwave generating unit which generates a microwave, and a plasma producing unit which produces electrons and photons of high energy using the microwave generated from the microwave generating unit. The plasma producing unit includes a coaxial waveguide having an inner electrode disposed adjacent to the microwave generating unit, an outer electrode connected to the microwave generating unit and disposed to coaxially surround a portion of the inner electrode, the outer electrode being shorter than the inner electrode, and a dielectric tube disposed between the inner electrode and the outer electrode to insulate between the inner electrode and the outer electrode. The coaxial waveguide utilizes a principle of “cut or truncated electrode of coaxial waveguide” and a resonance phenomenon of Langmiur.Type: GrantFiled: July 25, 2006Date of Patent: October 18, 2011Assignee: Samsung Electronics Co., Ltd.Inventors: Young-dong Lee, Igor Antonovich Kossyi, Mamikon Aramovich Misakyan, Merab Ivanovich Taktakishvili
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Patent number: 8035056Abstract: A plasma generation apparatus includes: a chamber having a chamber lid and defining an airtight reaction region; a susceptor in the chamber; a gas supply means supplying a process gas to the chamber; and a toroidal core vertically disposed with respect to the susceptor through the chamber lid, comprising: a toroidal ferromagnetic core combined with the chamber, the toroidal ferromagnetic core having a first portion outside the chamber and a second portion inside the chamber, the second portion having an opening portion; a radio frequency (RF) power supply connected to the chamber; an induction coil electrically connected to the RF power supply, the induction coil rolling the first portion; and a matching circuit matching an impedance between the RF power supply and the induction coil.Type: GrantFiled: April 29, 2008Date of Patent: October 11, 2011Assignee: Jusung Engineering Co., Ltd.Inventors: Gi-Chung Kwon, Sang-Won Lee, Sae-Hoon Uhm, Jae-Hyun Kim, Bo-Han Hong, Yong-Kwan Lee
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Patent number: 8026497Abstract: A housing for an elongate electrodeless bulb which is energiseable by an rf field such as a microwave field, preferably at or around 2.45 GHz. The housing is constructed of electrically conductive material and is arranged to have a substantially unobstructed opening through which the bulb is visible from outside the housing, and the housing is arranged to hold the bulb in a position which is recessed into the housing such that in use, the bulb is energized by virtue of its position within the housing and adjacent surrounding conductive parts of the housing substantially attenuate the rf field near the opening so that the rf field strength outside the housing is substantially zero whereby visible light or UV light is freely allowed out through the opening.Type: GrantFiled: November 13, 2008Date of Patent: September 27, 2011Assignee: Jenact LimitedInventors: David Briggs, Richard Little
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Patent number: 8008596Abstract: A plasma processing apparatus performs a specific plasma processing on a target substrate by disposing a first and a second electrode to face each other in a processing chamber, and supplying high-frequency electric power to at least one of the first and the second electrodes to thereby generate a plasma while introducing a processing gas onto the target substrate supported by the second electrode. The electrode for use as the first electrode includes: an electrode plate facing the second electrode; a support for supporting the electrode plate, wherein the support is in contact with a surface of the electrode plate and the surface is opposite to the second electrode; and a dielectric portion, provided on a contact surface of the support with the electrode plate, and having a shape in which a center portion thereof has a height different from that of an edge portion thereof.Type: GrantFiled: March 15, 2007Date of Patent: August 30, 2011Assignee: Tokyo Electron LimitedInventors: Akira Koshiishi, Takashi Suzuki
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Patent number: 7960670Abstract: A sensor apparatus for measuring a plasma process parameter for processing a workpiece. The sensor apparatus includes a base, an information processor supported on or in the base, and at least one sensor supported on or in the base. The at least one sensor includes at least one sensing element configured for measuring an electrical property of a plasma and at least one transducer coupled to the at least one sensing element. The transducer is configured so as to receive a signal from the sensing element and converting the signal into a second signal for input to the information processor.Type: GrantFiled: November 16, 2005Date of Patent: June 14, 2011Assignee: KLA-TENCOR CorporationInventors: Randall S. Mundt, Paul D. MacDonald, Andrew Beers, Mason L. Freed, Costas J. Spanos
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Patent number: 7956310Abstract: A stage onto which is electrostatically attracted a substrate to be processed in a substrate processing apparatus, which enables the semiconductor device yield to be improved. A temperature measuring apparatus 200 measures a temperature of the substrate to be processed. A temperature control unit 400 carries out temperature adjustment on the substrate to be processed such as to become equal to a target temperature based on a preset parameter. A temperature control unit 400 controls the temperature of the substrate to be processed by controlling the temperature adjustment by the temperature control unit 400 based on a measured temperature measured by the temperature measuring apparatus 200.Type: GrantFiled: September 29, 2006Date of Patent: June 7, 2011Assignee: Tokyo Electron LimitedInventors: Chishio Koshimizu, Tomohiro Suzuki
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Patent number: 7952048Abstract: A plasma source with discharge inducing bridges and a plasma processing system using the same. The plasma source may be constructed with a number of discharge inducing bridges, each discharge inducing bridge containing a magnetic core with a primary winding of a transformer. The discharge inducing bridges are positioned so as to face a susceptor. Each discharge inducing bridge is a hollow tube. When the electrical current of the primary winding of the transformer is driven, magnetic flux is induced to the magnetic core, so that inductive coupled plasma is formed around the discharge inducing bridges, and a plasma discharge is evenly induced horizontally/vertically along the discharge inducing bridges, so that uniform large-area high-density plasma is generated.Type: GrantFiled: May 23, 2006Date of Patent: May 31, 2011Assignee: New Power Plasma Co., Ltd.Inventors: Dae-Kyu Choi, Soon-Im Wi
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Patent number: 7939784Abstract: A method of tuning the thermal conductivity of an electrostatic chuck (ESC) support assembly comprises measuring the temperature at a plurality of sites on a support assembly surface in which each site is associated with a given cell, determining from the measurements any fractional reduction in area suggested for each cell, and removing material from the support assembly surface within each cell in accordance with the suggested fractional reduction in order to decrease thermal conductivity in that cell. The material removal can result in an improvement to the equilibrium temperature uniformity of the electrostatic chuck support assembly at the chuck surface of an electrostatic chuck bonded to the support assembly surface, or can result in an equilibrium temperature profile of the ESC support assembly which approaches or achieves a target equilibrium temperature profile.Type: GrantFiled: January 29, 2009Date of Patent: May 10, 2011Assignee: Lam Research CorporationInventors: Robert Steger, Keith Comendant
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Patent number: 7939778Abstract: A plasma processing chamber, which includes an upper electrode assembly, a lower electrode assembly, and a plasma confinement assembly. The upper electrode assembly includes an upper electrode, a backing member, the backing member attachable to an upper surface of the upper electrode, and a guard ring surrounding an outer surface of the backing member and located above the upper surface of the upper electrode, wherein the guard ring is configured to provide an inner gap between the outer surface of the backing member and an inner periphery of the guard ring. The lower electrode assembly is adapted to receive a semiconductor substrate. The plasma confinement assembly is separated from an outer periphery of the upper electrode and the backing member by the guard ring.Type: GrantFiled: January 22, 2009Date of Patent: May 10, 2011Assignee: Lam Research CorporationInventors: Dean J. Larson, Daniel Brown, Saurabh J. Ullal
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Patent number: 7928339Abstract: A device for producing a gas plasma by ionisation of a gas using a microwave source of determined nominal power (Pn), includes a magnetron 7 receiving its electric energy from a supply circuit. The device is characterized in that the power (Pd) delivered by the supply circuit to the magnetron 7 is no more than one quarter of the nominal power (Pn) of the magnetron 7.Type: GrantFiled: December 21, 2005Date of Patent: April 19, 2011Assignee: Societe pour la Conception des Application des Technique Electroniques-SATELECInventors: Pascal Regere, André Ricard, Sarah Cousty
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Patent number: 7919722Abstract: A method of fabricating yttria parts is provided herein. In one embodiment, the method includes sintering a yttria sample, machining the sintered sample to form a part, and annealing the part by heating the part at a predetermined heating rate, maintaining the part at a constant annealing temperature, and cooling the part at a predetermined cooling rate. At least one of the sintering and annealing atmospheres is an oxygen-containing atmosphere.Type: GrantFiled: June 21, 2007Date of Patent: April 5, 2011Assignee: Applied Materials, Inc.Inventors: Elmira Ryabova, Jennifer Sun, Jie Yuan
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Patent number: 7910853Abstract: A method and apparatus for controlling power output of a capacitatively-coupled plasma are provided. A detector is disposed on the power delivery conduit carrying power to one electrode to detect fluctuations in power output to the electrode. The detector is coupled to a signal generator, which converts the RF input signal to a constant control signal. A controller adjusts power input to the RF generator by comparing the control signal to a reference.Type: GrantFiled: February 28, 2008Date of Patent: March 22, 2011Assignee: Applied Materials, IncInventors: David T. Or, Yu Chang, William Kuang, Joel M. Huston, Chien-Teh Kao, Mei Chang
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Publication number: 20110049111Abstract: A control system for etching gas is provided. The control system includes a mass flow control unit, a flow rate control unit, and a tuning gas control unit. The mass flow control unit controls a mass flow of an etching gas input to a chamber. The flow rate control unit distributes the etching gas to an upper gas injector and a side gas injector connected with the mass flow control unit and installed in the chamber. The tuning gas control unit distributes and supplies a supplementary gas and tuning gas controlling an ion density and distribution of plasma within the chamber, to the mass flow control unit and the flow rate control unit.Type: ApplicationFiled: August 11, 2010Publication date: March 3, 2011Inventors: Sungyong KO, Minshik KIM, Byoungil LEE, Heeseok MOON, Kwangmin LEE, Keehyun KIM, Weonmook LEE
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Patent number: 7893387Abstract: A method for multi-step temperature control of a substrate includes selecting a first set-point temperature and a second set-point temperature for the substrate, and selecting a first PID parameter set including a first proportional constant KP1, a first integral constant KI1 and a first derivative constant KD1, and selecting a second PID parameter set including a second proportional constant KP2, a second integral constant KI2 and a second derivative constant KD2. The substrate is placed on a substrate holder, the temperature of the substrate is adjusted to the first set-point temperature and the substrate is processed for a first period of time at the first set-point temperature.Type: GrantFiled: March 26, 2009Date of Patent: February 22, 2011Assignee: Tokyo Electron LimitedInventor: Mitsunori Ohata
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Patent number: 7875824Abstract: An electrode assembly and method of centering an outer ring around an electrode assembly in a plasma reaction chamber used in semiconductor substrate processing. The method includes positioning the outer ring around an outer surface of a backing member of the electrode assembly, and inserting at least one centering element between the outer ring and the backing member. The centering element can be a plurality of spring-loaded centering elements received in a cavity on the outer surface of the backing member, the centering elements having a first end adapted to contact the outer ring and a second end adapted to receive a spring. The outer ring surrounds an outer surface of the backing member, such that the plurality of spring-loaded centering elements are positioned between the outer surface of the backing member and an inner surface of the outer ring.Type: GrantFiled: February 2, 2007Date of Patent: January 25, 2011Assignee: Lam Research CorporationInventors: Dean J. Larson, Daniel Brown, Keith Comendant, Victor Wang
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Publication number: 20110000894Abstract: The present invention is a cooling block that forms an electrode for generating a plasma for use in a plasma process, and includes a channel for a cooling liquid, the cooling block comprising: a first base material and a second base material respectively made of aluminum, at least one of the first and second base materials having a recess for forming a channel for a cooling liquid; and a diffusion bonding layer, in which zinc is diffused in aluminum, and an anti-corrosion layer of a zinc oxide film, the layers being formed by interposing zinc between the first and second base materials, and by bonding the first and second base materials with zinc interposed therebetween in a heating atmosphere containing oxygen.Type: ApplicationFiled: September 7, 2010Publication date: January 6, 2011Applicant: TOKYO ELECTRON LIMITEDInventors: Toshifumi ISHIDA, Daisuke Hayashi
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Patent number: 7858898Abstract: A device for cleaning a bevel edge of a semiconductor substrate. The device includes a lower electrode assembly that has a top surface and is adapted to support the substrate and an upper electrode assembly that has a bottom surface opposing the top surface. The lower and upper electrode assemblies generate plasma for cleaning the bevel edge of the substrate disposed between the top and bottom surfaces during operation. The device also includes a mechanism for suspending the upper electrode assembly over the lower support and adjusting the tilt angle and horizontal translation of the bottom surface relative to the top surface.Type: GrantFiled: January 26, 2007Date of Patent: December 28, 2010Assignee: Lam Research CorporationInventors: Andrew D. Bailey, III, Alan M. Schoepp, Gregory Sexton, Andras Kuthi, Yunsang Kim, William S. Kennedy
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Patent number: 7847209Abstract: A method of forming a metal oxide film by the plasma CVD method and which includes reacting chiefly an organometal by a glow discharge in a low output region and, then, reacting the organometal with an oxidizing gas by the glow discharge in a high-output region to form a metal oxide film on the surface of a plastic substrate via an organic layer. This method forms a thin film having excellent adhesiveness, softness and flexibility on the surface of a plastic substrate relying on the plasma CVD method.Type: GrantFiled: October 9, 2003Date of Patent: December 7, 2010Assignee: Toyo Seikan Kaisha, Ltd.Inventors: Tsunehisa Namiki, Toshihide Ieki, Hideo Kurashima, Hajime Inagaki, Akira Kobayashi, Koji Yamada
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Patent number: 7838793Abstract: A system (10) for coating surfaces of a workpiece (12) comprises a biasing system (242) for connection to said workpiece (12) and an anode (76) such as to negatively bias the workpiece relative to the anode and a vacuum source (42, 44) for evacuating an interior of the workpiece (12). A gas supply (224, 226, 228) is employed for introducing a gas containing a treatment material to said workpiece and a control system (244) controls the biasing system (242), the vacuum source (42, 44) and the gas supply (224, 226, 228) so as to establish a hollow cathode effect within the workpiece (12). A pair of coupling heads (16, 18) are supported on articulated arms (22, 24, 26) movable in one or more of three axes and include removable shields (78) to protect the heads (16, 18) and an anode mount (74) for receiving an anode (76). The articulated arms allow the system to accommodate a plurality of different shaped and different sized workpieces while the shields protect the coupling heads during a deposition process.Type: GrantFiled: July 21, 2006Date of Patent: November 23, 2010Assignee: Sub-One Technology, Inc.Inventors: Andrew William Tudhope, Raul Donate Mercado, Thomas Bryan Casserly, William John Boardman, Frederick Contreras
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Patent number: 7829815Abstract: A adjustable upper coil or electrode for a reaction chamber apparatus useable in semiconductor processing, is constructed so that its shape may be selectively changed or so at least two portions thereof may be selectively driven at different power and/or frequencies. The adjustable upper coil or electrode, therefore, enables the plasma density distribution in the reaction chamber apparatus to be selectively controlled.Type: GrantFiled: September 22, 2006Date of Patent: November 9, 2010Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.Inventors: Ying-Lin Chen, Chi-An Kao, Po-Zen Chen, Yi-Li Hsiao, Chen-Hua Yu, Jean Wang, Lawrance Sheu
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Patent number: 7812278Abstract: In one implementation, a method is provided for testing a plasma reactor multi-frequency matching network comprised of multiple matching networks, each of the multiple matching networks having an associated RF power source and being tunable within a tunespace. The method includes providing a multi-frequency dynamic dummy load having a frequency response within the tunespace of each of the multiple matching networks at an operating frequency of its associated RF power source. The method further includes characterizing a performance of the multi-frequency matching network based on a response of the multi-frequency matching network while simultaneously operating at multiple frequencies.Type: GrantFiled: July 15, 2007Date of Patent: October 12, 2010Assignee: Applied Materials, Inc.Inventor: Steven C. Shannon
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Patent number: 7804040Abstract: A physical vapor deposition reactor includes a vacuum chamber with a sidewall, a ceiling and a retractable wafer support pedestal near a floor of the chamber, and a vacuum pump coupled to the chamber, the retractable wafer support pedestal having an internal electrode and a grounded base with a conductive annular flange extending from the base. A metal sputter target at the ceiling is energized by a high voltage D.C. source. The reactor has an RF plasma source power generator with a frequency suitable for exciting kinetic electrons is coupled to either the sputter target or to the internal electrode of the pedestal.Type: GrantFiled: May 22, 2006Date of Patent: September 28, 2010Assignee: Applied Materials, Inc.Inventors: Karl M. Brown, Semyon Sherstinksy, Vineet H. Mehta, Wei W. Wang, John A. Pipitone, Kurt J. Ahmann, Armando Valverde, Jr.
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Patent number: 7781695Abstract: Inductively coupled plasma (ICP) reforming converts carbonaceous compounds into a fuel for use in generating electrical power. Energy rich hydrocarbon fuels, such as coal, marine diesel, oils, and hydrocarbon wastes are employed as a feedstock for the ICP, which transforms the feedstock into a fuel that can be used by fuel cells and gas turbines for the production of electricity. The overall efficiency of an ICP-based electrical power system can be increased by providing partial oxidation within the reaction vessel. The partial oxidation conditions consume a small amount of the reformed fuel gas, thereby liberating sufficient thermal energy to reduce the electrical power requirements of the ICP to maintain desired reactor temperatures, and providing an increase in the overall net electrical power production. The integrated power production system can also adjust to meet an increased requirement for process heat and steam by balancing the effect of partial oxidation.Type: GrantFiled: September 14, 2007Date of Patent: August 24, 2010Assignee: Plasmet CorporationInventors: Andreas Blutke, John Vavruska, John Mark Henderson, Robert L. Ferguson