With Means To Generate And To Direct A Reactive Ion Etchant Beam At A Workpiece Patents (Class 156/345.39)
  • Patent number: 7771602
    Abstract: According to one embodiment, a method for manufacturing a magnetic recording medium includes forming patterns having protrusions and recesses of a ferromagnetic material onto a recording track section and a servo section on a substrate, forming a flattening film, a top surface of which is higher than that of the protrusion of the ferromagnetic material, onto the ferromagnetic material, and performing ion beam etching onto the flattening film up to a top surface of the protrusion of the ferromagnetic material, and determining an end point of flattening etching on the basis of a change in the total number of incident particles by means of an ion counter installed so as to be at an angle ? with respect to a perpendicular direction to the substrate in accordance with a material of the flattening film.
    Type: Grant
    Filed: June 28, 2006
    Date of Patent: August 10, 2010
    Assignees: Kabushiki Kaisha Toshiba, Showa Denko K.K.
    Inventors: Yoshiyuki Kamata, Katsuyuki Naito, Akira Kikitsu, Masatoshi Sakurai, Masahiro Oka
  • Publication number: 20100181294
    Abstract: A plasma etching apparatus includes a vacuum processing chamber; a lower electrode, i.e., a mounting table for mounting the substrate, provided in the vacuum processing chamber; an upper electrode provided to face the lower electrode; a gas supply unit for supplying a processing gas to the vacuum processing chamber; a high frequency power supply unit for supplying a high frequency power to the lower electrode; and a focus ring provided on the lower electrode to surround a periphery of the substrate. In a method for performing a plasma etching on a substrate by using the plasma etching apparatus, a plasma is generated in the vacuum processing chamber to perform the plasma etching on the substrate by using the plasma after the focus ring is heated by supplying a high frequency power from the high frequency power supply unit to the lower electrode under a condition that no plasma is generated.
    Type: Application
    Filed: January 11, 2010
    Publication date: July 22, 2010
    Applicant: TOKYO ELECTRON LIMITED
    Inventor: Hiroshi TSUJIMOTO
  • Publication number: 20100178601
    Abstract: A photomask defect correction method corrects a defect of the photomask, and includes an observation process of observing the defect of a portion to be corrected and acquiring defect information for performing correction, and a defect correction process of irradiating a focused ion beam formed of rare gas ions and generated by an ion beam irradiation system including a gas field ion source to the portion to be corrected and correcting the defect.
    Type: Application
    Filed: August 6, 2008
    Publication date: July 15, 2010
    Inventor: Osamu Takaoka
  • Patent number: 7748344
    Abstract: An ion shower system is disclosed and comprises a plasma source operable to generate source gas ions within a chamber. The plasma source further comprises a plurality of conductor segments and a plurality of capacitors, wherein the conductor segments are serially connected through the plurality of capacitors. The plasma source further comprises an antenna drive circuit coupled to the plurality of conductor segments that provides power to the conductor segments and capacitors at a predetermined frequency. The ion shower system also comprises a source gas inlet that provides a source gas to the chamber. The conductor segments, capacitors and antenna drive circuit cooperatively provide energy to charged particles in the chamber, thereby energizing the charged particles and generating a plasma comprising source gas ions and electrons within the chamber due to ionizing collisions between the energized charged particles and the source gas.
    Type: Grant
    Filed: November 6, 2003
    Date of Patent: July 6, 2010
    Assignee: Axcelis Technologies, Inc.
    Inventors: William F. DiVergilio, Victor M. Benveniste, Peter L. Kellerman
  • Publication number: 20100102025
    Abstract: A method for marking an ophthalmic substrate or other ophthalmic article comprising the steps of providing an ophthalmic substrate of suitable organic or mineral glass having opposed optical surfaces; depositing a plurality of layers to define coatings on one or both of the opposed optical surface with anti-impact, anti-scratch, anti-reflection and/or anti-smudge properties, at least one of the layers being an electrically conductive layer; providing a mask defining a configuration complementary to the desired marking for one of the surface of the coated ophthalmic substrate and positioning the mask in the immediate proximity of the ophthalmic substrate surface; and providing an ion source and directing the ion beam from the ion source masked surface of the ophthalmic substrate to remove at least a portion of an outermost one of the coating layers exposed through the mask thereby producing a desired marking on the substrate surface coating rendered visible by fogging.
    Type: Application
    Filed: October 28, 2008
    Publication date: April 29, 2010
    Applicant: ESSILOR INTERNATIONAL (Compagnie Generale d'Optique)
    Inventor: William EAGERTON
  • Patent number: 7695590
    Abstract: A plasma reactor for processing a semiconductor workpiece includes a reactor chamber and a set of plural parallel ion shower grids that divide the chamber into an upper ion generation region and a lower reactor region, each of the ion shower grids having plural orifices in mutual registration from grid to grid, each orifice being oriented in a non-parallel direction relative to a surface plane of the respective ion shower grid. A workpiece support in the process region faces the lowermost one of the ion shower grids. A reactive species source furnishes into the ion generation region a chemical vapor deposition precursor species. The reactor further includes a vacuum pump coupled to the reactor region, a plasma source power applicator for generating a plasma in the ion generation region and a grid potential source coupled to the set of ion shower grids.
    Type: Grant
    Filed: June 22, 2004
    Date of Patent: April 13, 2010
    Assignee: Applied Materials, Inc.
    Inventors: Hiroji Hanawa, Tsutomu Tanaka, Kenneth S. Collins, Amir Al-Bayati, Kartik Ramaswamy, Andrew Nguyen
  • Patent number: 7695598
    Abstract: A coater having a substrate cleaning device is disclosed. The substrate cleaning device comprises an ion gun (i.e., an ion source) that is positioned beneath a path of substrate travel (e.g., beneath a substrate support) extending through the coater and that is adapted for treating a bottom major surface of a substrate. Certain embodiments involve an upward coating apparatus that is further along the path of substrate travel than the substrate cleaning device. In some embodiments of this nature, the upward coating apparatus is configured for depositing a photocatalytic coating upwardly onto the bottom major surface of the substrate. Certain embodiments of the invention involve a downward coating apparatus, wherein the substrate cleaning device is further along the path of substrate travel than the downward coating apparatus. Some embodiments involve an upward coating apparatus that is further along the path of substrate travel than the substrate cleaning device.
    Type: Grant
    Filed: May 18, 2007
    Date of Patent: April 13, 2010
    Assignee: Cardinal CG Company
    Inventor: Klaus Hartig
  • Patent number: 7682982
    Abstract: There is provided a plasma processing apparatus includes a lower electrode in a processing chamber on which a object to be processed is mounted; an upper electrode confronting the lower electrode; a first and a second high-frequency power supply for applying high-frequency powers respectively to the upper and the lower electrode; and an output controller for raising each of outputs from the high-frequency power supplies at least three times in a stepwise manner up to each of set levels for processing the object to be processed. The output controller adjusts each of rising times of the outputs from the high-frequency power supplies so that an output of the second high-frequency power supply is raised earlier than an output of the first high-frequency power supply while the outputs from the high-frequency power supplies are raised up to the set levels in a stepwise manner.
    Type: Grant
    Filed: February 18, 2005
    Date of Patent: March 23, 2010
    Assignee: Tokyo Electron Limited
    Inventors: Naoto Sagae, Hiroshi Tsuchiya, Tsutomu Higashiura, Hideo Kato, Ryuji Ohtani
  • Publication number: 20100038341
    Abstract: A method of forming a metal line of an inductor used in a Radio Frequency (RF) device, effectively removes polymer generated during an etching process to form trenches. The method removes the polymer using a radical having a high reactivity with the polymer. The method includes carrying out first main etching to form the trenches, carrying out ashing to remove polymer generated in the first main etching, and carrying out second main etching to form vias on the bottoms of the trenches.
    Type: Application
    Filed: August 5, 2009
    Publication date: February 18, 2010
    Inventor: Ki-Jun Yun
  • Publication number: 20100025363
    Abstract: The present invention provides a substrate processing apparatus capable of suppressing mutual contamination and/or damage of the insides of ion beam generators arranged opposite each other via a substrate, and a magnetic recording medium manufacturing method. A substrate processing apparatus according to an embodiment of the present invention includes a first ion beam generator that applies an ion beam to one surface to be processed of a substrate W, and a second ion beam generator that applies an ion beam to another surface to be processed, which are arranged opposite each other via the substrate W, and an area of a first grid in the first ion beam generator, and an area of a second grid in the second ion beam generator, each area corresponding to an opening of the substrate W, are occluded.
    Type: Application
    Filed: July 14, 2009
    Publication date: February 4, 2010
    Applicant: CANON ANELVA CORPORATION
    Inventors: Kazuto Yamanaka, Masahiro Shibamoto, Ayumu Miyoshi, Satoshi Hitomi, David Djulianto Djayaprawira
  • Publication number: 20090294064
    Abstract: A focus ring that can eliminate the gap between a mounting stage and the focus ring in a plasma processing apparatus to prevent damage to a side wall of the mounting stage of a plasma processing apparatus and attachment of particles to a substrate to be processed resulting from spread of plasma. The focus ring has an annular shape and is provided in an outer peripheral edge portion of an upper surface of the mounting stage. The focus ring is comprised of a combination of a plurality of focus ring pieces formed by dividing the focus ring in a circumferential direction of the annular shape, and an annular band member that urges each of the focus ring pieces toward a center of the focus ring.
    Type: Application
    Filed: May 28, 2009
    Publication date: December 3, 2009
    Applicant: TOKYO ELECTRON LIMITED
    Inventor: Nobuyuki NAGAYAMA
  • Patent number: 7560712
    Abstract: An apparatus and method of doping ions into a substrate are disclosed and include a process chamber having an inner space in which an ion implantation process is performed, a support unit positioned in the process chamber, supporting a substrate and being electrically connected to a first power source for generating a high frequency pulse, a conductive unit separated from the support unit in such a manner that plasma associated with the ion implantation process is generated between the support unit and the conductive unit, wherein the conductive unit comprises a first etch prevention member preventing the conductive unit from being etched by a source gas used to generate the plasma, and a power port electrically connected to a second power source and generating radio frequency (RF) power applied to the conductive unit.
    Type: Grant
    Filed: August 27, 2007
    Date of Patent: July 14, 2009
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Il-Kyoung Kim, No-Hyun Huh, Tae-Won Lee, Sung-Wook Park, Ki-Young Yun, Won-Soon Lee, Young-Ha Yoon, Tae-Sub Im
  • Publication number: 20090078678
    Abstract: A plasma processing apparatus for processing a substrate using plasma includes a first electrode configured to mount the substrate, a second electrode disposed to face the first electrode with a predetermined space, a chamber containing the first electrode and the second electrode, the chamber being capable of adjusting an inside atmosphere, a first electric power source device configured to apply a first RF voltage for controlling a self-bias voltage generated on the substrate to the first electrode, the first electric power source device applying a substantially constant width and a substantially constant value in a peak-to-peak voltage of an RF voltage of a first frequency at intervals, and a second electric power source device configured to apply a second RF voltage of a second frequency for generating plasma between the first and second electrodes to one of the first electrode and the second electrode.
    Type: Application
    Filed: September 12, 2008
    Publication date: March 26, 2009
    Inventors: Akihiro Kojima, Hisataka Hayashi, Akio Ui
  • Patent number: 7507313
    Abstract: A film removal method and apparatus for removing a film from a substrate are disclosed. The method comprises the steps of disposing a plasma generator and a sucking apparatus over the substrate, projecting a plasma beam from the plasma generator onto the film obliquely, disposing the sucking apparatus on a reflection path of plasma projected by the plasma generator, and sucking a by-product of an incomplete plasma reaction occurring to the film so as to keep a surface of the substrate clean, with a view to overcoming the drawbacks of deposition of the by-product which results from using the plasma as a surface cleansing means under atmospheric conditions.
    Type: Grant
    Filed: September 27, 2006
    Date of Patent: March 24, 2009
    Assignee: Industrial Technology Research Institute
    Inventors: Chia-Chiang Chang, Chin-Jyi Wu, Chen-Der Tsai, Chun-Hung Lin
  • Publication number: 20080190559
    Abstract: The present invention provides a surface treatment apparatus for molded polymer products. In the operation, a molded polymer product is held by a jig (11) on a product loading and discharging unit (20) and is fed by a product feeding unit (10). A first impurity removing unit (30) cleans the surface of the product. The product passes through an inlet vacuum unit (40) and reaches a product surface ion treatment unit. The ion treatment unit controls an ion beam electric current and produces plasma cations using gas supplied from an atmospheric gas supply unit (60), and the plasma ions are evenly scanned onto the product surfaces. The surface-treated molded product passes through a second impurity removing unit and is fed to the product loading and discharging unit, at which the jig exchanges the existing product for a new product.
    Type: Application
    Filed: March 20, 2006
    Publication date: August 14, 2008
    Inventor: Deog Gu Lim
  • Patent number: 7371689
    Abstract: A method and system for backside unlayering a semiconductor device to expose FEOL semiconductor features of the device for subsequent electrical and/or physical probing. A window is formed within a backside substrate layer of the semiconductor. A collimated ion plasma is generated and directed so as to contact the semiconductor only within the backside window via an opening in a focusing shield. This focused collimated ion plasma contacts the semiconductor, only within the window, while the semiconductor is simultaneously being rotated and tilted by a temperature controlled stage, for uniform removal of semiconductor layering such that the semiconductor features, in a location on the semiconductor corresponding to the backside window, are exposed. Backside unlayering of the invention may be enhanced by CAIBE processing.
    Type: Grant
    Filed: October 3, 2005
    Date of Patent: May 13, 2008
    Assignee: International Business Machines Corporation
    Inventors: Terence L Kane, Darrell L Miles, John D Sylvestri, Michael P Tenney
  • Patent number: 7354500
    Abstract: A mask for use with a sample preparation apparatus that prepares an ion-milled sample adapted to be observed by an electron microscope is offered. It is possible to prepare the sample having a desired cross section by the use of the mask. The mask, which defines the boundary between irradiated and unirradiated regions on the sample surface, has an edge portion having an increased thickness compared with the other portions. When the edge portion of the mask is etched, the original shape is almost maintained. Thus, the side surface of the mask is kept on the center axis of the ion beam.
    Type: Grant
    Filed: August 20, 2004
    Date of Patent: April 8, 2008
    Assignees: Jeol Ltd., Jeol Engineering Co., Ltd.
    Inventors: Tadanori Yoshioka, Eiichi Watanabe
  • Patent number: 7345288
    Abstract: A sample holder and ion-beam processing system are offered which permit a good sample adapted for observation (such as TEM (transmission electron microscopy) observation). The sample holder has a sample placement portion having a sample adhering surface. The holder further includes a shielding material guide portion placed over the sample placement portion. The guide portion is fixedly mounted to the sample placement portion and has a shielding material guide surface. The sample adhering surface is in a position lower than the position of the shielding material guide surface by a given amount of 40 ?m. Therefore, when the sample having a thickness of 100 ?m is attached to the sample adhering surface, the sample protrudes 60 ?m ahead of the shielding material guide surface. The shielding material having a thickness of about 20 ?m is then placed in position over the shielding material guide surface.
    Type: Grant
    Filed: January 10, 2006
    Date of Patent: March 18, 2008
    Assignee: Jeol Ltd.
    Inventor: Takushi Yamashita
  • Publication number: 20080023142
    Abstract: An abrasive blasting device comprising means (15) for entraining abrasive particles in a gas flow and propelling them against a surface to be blasted and means (16, 25) for drawing spent particles and debris away from said surface using a vacuum generated internally using the compressed gas source that propels the abrasive particles. The vacuum is preferably generated using a vacuum nozzle that directs compressed air away from the surface to be blasted into a conical chamber tapering to an exhaust port. The device also incorporates an easily replaceable blasting nozzle unit (16) for quick maintenance and may incorporate a hopper (50) for recycling the abrasive particles.
    Type: Application
    Filed: December 10, 2004
    Publication date: January 31, 2008
    Applicant: Pentagon Glass Tech Limited
    Inventor: Peter Finster
  • Patent number: 7323080
    Abstract: The present is directed to an apparatus for etching the top edge and bottom of a wafer. The apparatus includes a substrate support part for supporting a wafer and a movable protect part for preventing fluid for an etch from flowing into a non-etch portion of the wafer. The top edge and bottom of the wafer is etched by a wet etch, and a boundary of the non-etch portion and the edge of the wafer is etched by a dry etch.
    Type: Grant
    Filed: March 21, 2005
    Date of Patent: January 29, 2008
    Assignee: Semes Co., Ltd.
    Inventors: In-Jun Kim, Jung-Keun Cho, Jang-Seob Choi, Yong-Nam Choi, Jeong-Yong Bae
  • Publication number: 20070278180
    Abstract: A method of imaging and identifying materials on and below the surface of a structure is described. The method may be used in areas as small as one micron in diameter, and may remove a thin portion of the topmost material, repeating the analysis, until a desired depth is obtained. An energetic beam, such as an electron beam, is directed at a selected surface location. The surface has an added layer of a solid, fluid or gaseous reactive material, such as a directed stream of a fluorocarbon, and the energetic beam disassociates the reactive material in the region of the beam into radicals that chemically attack the surface. The reaction products from the radical attack on the surface are pumped away from the surface and analyzed using various methods, such as optical emission, infrared, atomic absorption, or Raman spectroscopy.
    Type: Application
    Filed: June 1, 2006
    Publication date: December 6, 2007
    Inventors: Mark J. Williamson, Gurtej S. Sandhu, Justin R. Arrington, Neal R. Rueger
  • Patent number: 7304263
    Abstract: The footprint of a reactive atom plasma processing tool can be modified using an aperture device. A flow of reactive gas can be injected into the center of an annular plasma. An aperture can be positioned relative to the plasma such that the effective footprint of the plasma can be changed without adjusting the gas flows or swapping out the tool. Once the aperture and tool are in position relative to a workpiece, reactive atom plasma processing can be used to modify the surface of the workpiece, such as to etch, smooth, polish, clean, and/or deposit material onto the workpiece. If necessary, a coolant can be circulated about the aperture. Multiple apertures can also be used to provide a variety of footprint sizes and/or shapes. This description is not intended to be a complete description of, or limit the scope of, the invention. Other features, aspects, and objects of the invention can be obtained from a review of the specification, the figures, and the claims.
    Type: Grant
    Filed: August 5, 2004
    Date of Patent: December 4, 2007
    Assignee: RAPT Industries, Inc.
    Inventors: Andrew Chang, Jeffrey W. Carr, Jude Kelley, Peter S. Fiske
  • Patent number: 7288173
    Abstract: An ion beam processing system emitting an ion beam at a workpiece to process the workpiece, provided with an electrode for applying an electric field to the workpiece, the potential of the electrode being made 0V or a negative potential, and a cover insulated from the electrode arranged at an ion beam incidence side of the electrode, thereby preventing or suppressing sputtered particles from redepositing on a master pattern and the processed surface to form burrs, and an ion beam processing method used with the same.
    Type: Grant
    Filed: August 27, 2004
    Date of Patent: October 30, 2007
    Assignees: Sony Corporation, National Institute of Advanced Industrial Science and Technology
    Inventors: Akio Fukushima, Kojiro Yagami
  • Patent number: 7276140
    Abstract: A plasma accelerating apparatus and a plasma processing system having the same are provided. The apparatus includes a circular channel comprising an inner wall, an outer wall, and an end wall connected to an end of the inner wall and the outer wall to form an outlet port at the other ends of the inner and outer walls; a gas supply portion to supply a gas to an inside of the channel; and a plasma generating and accelerating portion to supply ionization energy to the gas inside the channel to generate a plasma beam, and to accelerate the generated plasma beam toward the outlet port, wherein one of the inner wall and outer wall of the channel is inclined at an angle so that the other end of the wall is located closer to a center of the plasma accelerating apparatus.
    Type: Grant
    Filed: May 18, 2006
    Date of Patent: October 2, 2007
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jin-woo Yoo, Won-taek Park
  • Patent number: 7264741
    Abstract: A coater having a substrate cleaning device is disclosed. Also disclosed are methods of processing substrates in a coater equipped with a substrate cleaning device. The substrate cleaning device comprises an ion gun (i.e., an ion source) that is positioned beneath a path of substrate travel (e.g., beneath a substrate support) extending through the coater and that is adapted for treating a bottom major surface of a substrate. Certain embodiments involve an upward coating apparatus that is further along the path of substrate travel than the substrate cleaning device. In some embodiments of this nature, the upward coating apparatus is configured for depositing a photocatalytic coating upwardly onto the bottom major surface of the substrate. Certain embodiments of the invention involve a downward coating apparatus, wherein the substrate cleaning device is further along the path of substrate travel than the downward coating apparatus.
    Type: Grant
    Filed: December 31, 2003
    Date of Patent: September 4, 2007
    Assignee: Cardinal CG Company
    Inventor: Klaus Hartig
  • Patent number: 7241360
    Abstract: There is provided by this invention a unique ion source for depositing thin films on a substrate in a vacuum chamber that neutralizes the positive electric charges that develop on the substrate and vacuum chamber apparatus that may cause arcing and degradation of the film deposition. A power supply with a reversing voltage waveform is utilized that neutralizes the electric charge on the substrate and the vacuum chamber apparatus. A power supply applies an ac voltage to the anode of the ion source and a rectified ac voltage to the cathode. The ground terminal of the power supply is connected to the vacuum chamber. The rectifying circuit is comprised of zener diodes that clamp the voltage in the circuit from spikes during plasma ignition and a capacitor connected to negatively bias the cathode when there is no plasma discharge.
    Type: Grant
    Filed: April 19, 2002
    Date of Patent: July 10, 2007
    Assignee: Advanced Energy Industries, Inc.
    Inventors: Andrew Shabalin, Colin Quinn, Michael Kishinevski
  • Patent number: 7109487
    Abstract: A particle beam device, in particular an electron microscope, having at least two particle beam columns and one object slide having a receiving surface for receiving an object. The particle beam device makes it possible to align the surface of the object perpendicular to the beam axes of the particle beam columns, using simple means, in an accurate and error-free manner. The object slide assumes a basic position from which it may be tilted into the position in which the first or the second beam axis is perpendicular or at least almost perpendicular to the receiving surface of the object slide. In the basic position, a normal to the receiving surface of the object slide is spatially oriented such that an angle formed between the first beam axis and the normal is greater than or equal to an angle formed between the second beam axis and the normal.
    Type: Grant
    Filed: October 26, 2004
    Date of Patent: September 19, 2006
    Assignee: Carl Zeiss NTS GmbH
    Inventors: Martin Kienle, Helmut Muller, Peter Hoffrogge, Wilhelm Bolsinger
  • Patent number: 7100532
    Abstract: A reactive circuit is disclosed as part of a method and system for generating high density plasma that does not require the use of a dynamic matching network for directly driving a plasma exhibiting a dynamic impedance. The reactive network is designed to provide a small total reactance when the plasma reactance is at a first plasma reactance and presents a reactance that does not exceed a specified limit at a second plasma reactance. The first and second plasma reactance span a substantially fraction of an expected dynamic plasma reactance range. The first and second plasma reactance values may, for example, correspond to a high expected plasma reactance limit and a low expected plasma reactance limit respectively or the first plasma reactance may correspond to an average expected plasma reactance.
    Type: Grant
    Filed: June 21, 2004
    Date of Patent: September 5, 2006
    Assignee: Plasma Control Systems, LLC
    Inventor: Patrick Pribyl
  • Patent number: 7094312
    Abstract: Particle beam systems and methods for interacting with a workpiece according to this invention include a work stage assembly and a first particle beam source. The work stage assembly is adapted a) for supporting a workpiece, b) for translating along a first axis, c) for translating along a second axis perpendicular to the first axis, and d) for rotating about a third axis perpendicular to both the first axis and the second axis. The work stage assembly has a work stage axis substantially parallel to the third axis. The first particle beam source for interacting with the workpiece is supported by the work stage assembly. The first particle beam source has a first particle beam axis. In one embodiment, the first particle beam source is oriented so that the first particle beam axis forms an angle with the third axis.
    Type: Grant
    Filed: April 29, 2002
    Date of Patent: August 22, 2006
    Assignee: FSI Company
    Inventors: Charles J. Libby, Billy W. Ward
  • Patent number: 7015146
    Abstract: A method and system for backside unlayering a semiconductor device to expose FEOL semiconductor features of the device for subsequent electrical and/or physical probing. A window is formed within a backside substrate layer of the semiconductor. A collimated ion plasma is generated and directed so as to contact the semiconductor only within the backside window via an opening in a focusing shield. This focused collimated ion plasma contacts the semiconductor, only within the window, while the semiconductor is simultaneously being rotated and tilted by a temperature controlled stage, for uniform removal of semiconductor layering such that the semiconductor features, in a location on the semiconductor corresponding to the backside window, are exposed. Backside unlayering of the invention may be enhanced by CAIBE processing.
    Type: Grant
    Filed: January 6, 2004
    Date of Patent: March 21, 2006
    Assignee: International Business Machines Corporation
    Inventors: Terence L. Kane, Darrell L. Miles, John D. Sylyestri, Michael P. Tenney
  • Patent number: 7005032
    Abstract: To resolve a problem that an etching rate profile is changed by a position of a nozzle relative to a semiconductor wafer and accordingly, at a vicinity of an outer edge of the semiconductor wafer, an accurate machining result is difficult to achieve, gas including activated species produced by plasma is blown from a nozzle locally to a surface of the semiconductor wafer W supported on a wafer table concentrically therewith to thereby remove unevenness on the surface of the semiconductor wafer. In this case, the wafer table is provided with a radius larger than a radius of the semiconductor wafer supported thereby by an outstretched portion to thereby prevent an outer edge from being removed excessively by reflected gas.
    Type: Grant
    Filed: March 18, 2002
    Date of Patent: February 28, 2006
    Assignee: Speedfam Co., Ltd.
    Inventors: Michihiko Yanagisawa, Kazuyuki Tsuruoka, Chikai Tanaka
  • Patent number: 6989228
    Abstract: Disclosed is apparatus for treating samples, and a method of using the apparatus. The apparatus includes processing apparatus (a) for treating the samples (e.g., plasma etching apparatus), (b) for removing residual corrosive compounds formed by the sample treatment, (c) for wet-processing of the samples and (d) for dry-processing the samples. A plurality of wet-processing treatments of a sample can be performed. The wet-processing apparatus can include a plurality of wet-processing stations. The samples can either be passed in series through the plurality of wet-processing stations, or can be passed in parallel through the wet-processing stations.
    Type: Grant
    Filed: July 31, 2001
    Date of Patent: January 24, 2006
    Assignee: Hitachi, LTD
    Inventors: Masayuki Kojima, Yoshimi Torii, Michimasa Hunabashi, Kazuyuki Suko, Takashi Yamada, Keizo Kuroiwa, Kazuo Nojiri, Yoshinao Kawasaki, Yoshiaki Sato, Ryooji Fukuyama, Hironobu Kawahara
  • Patent number: 6983718
    Abstract: An electron beam physical vapor deposition (EBPVD) apparatus and a method for using the apparatus to produce a coating material (e.g., a ceramic thermal barrier coating) on an article. The EBPVD apparatus generally includes a coating chamber that is operable at elevated temperatures and subatmospheric pressures. An electron beam gun projects an electron beam into the coating chamber and onto a coating material within the chamber, causing the coating material to melt and evaporate. An article is supported within the coating chamber so that vapors of the coating material deposit on the article. The operation of the EBPVD apparatus is enhanced by the shape and intensity of the electron beam pattern on the coating material and on a crucible containing the molten coating material.
    Type: Grant
    Filed: July 24, 2000
    Date of Patent: January 10, 2006
    Assignee: General Electric Company
    Inventors: Robert William Bruce, John Douglas Evans, Sr.
  • Patent number: 6949147
    Abstract: Apparatus and a method for removing particles from the surface of a substrate include determining respective position coordinates of the particles on the surface. A beam of electromagnetic energy is directed via an optical cleaning arm at the coordinates of each of the particles in turn, such that absorption of the electromagnetic energy at the surface causes the particles to be dislodged from the surface substantially without damage to the surface itself.
    Type: Grant
    Filed: May 13, 2004
    Date of Patent: September 27, 2005
    Assignee: Oramir Semiconductor Equipment Ltd.
    Inventors: Yoram Uziel, David Yogev, Ehud Poles, Amir Wachs
  • Patent number: 6926799
    Abstract: A damage-free apparatus for etching the large area by using a neutral beam which can perform an etching process without causing electrical and physical damages by the use of the neutral beam is provided. The damage-free etching apparatus includes: an ion source for extracting and accelerating an ion beam having a predetermined polarity; a grid positioned at the rear of the ion source and having a plurality of grid holes through which the ion beam passes; a reflector closely attached to the grid and having a plurality of reflector holes corresponding to the grid holes in the grid, the reflector for reflecting the ion beam passed through the grid holes in the reflector holes and neutralizing the ion beam into a neutral beam; and a stage for placing a substrate to be etched in a path of the neutral beam.
    Type: Grant
    Filed: February 28, 2002
    Date of Patent: August 9, 2005
    Assignee: Sungkyunkwan University
    Inventors: Geun-young Yeom, Do-haing Lee, Min-jae Chung
  • Patent number: 6905969
    Abstract: A plasma etch reactor 20 includes a upper electrode 24, a lower electrode 24, a peripheral ring electrode 26 disposed therebetween. The upper electrode 24 is grounded, the peripheral electrode 26 is powered by a high frequency AC power supply, while the lower electrode 28 is powered by a low frequency AC power supply, as well as a DC power supply. The reactor chamber 22 is configured with a solid source 50 of gaseous species and a protruding baffle 40. A nozzle 36 provides a jet stream of process gases in order to ensure uniformity of the process gases at the surface of a semiconductor wafer 48. The configuration of the plasma etch reactor 20 enhances the range of densities for the plasma in the reactor 20, which range can be selected by adjusting more of the power supplies 30, 32.
    Type: Grant
    Filed: May 28, 2002
    Date of Patent: June 14, 2005
    Assignee: Tegal Corporation
    Inventors: Stephen P. DeOrnellas, Leslie G. Jerde, Alferd Cofer, Robert C. Vail, Kurt A. Olson
  • Patent number: 6878898
    Abstract: A method for improving the edge-to-center photoresist ash rate uniformity in lower temperature (typically, but not limited to <100° C.) processing of integrated circuits and micro-electro-mechanical devices. A varying gap distance 32 from the edge-to-center of the upper and lower grid plates, 30 and 31, of a plasma ashing machine is provided to allow additional flow of plasma gases into the normally semi-stagnated area near the center of the wafer being processed. This improvement overcomes the problem of slower photoresist removal in the center of the wafer. Three configurations of the invention is described, including both stepwise and continuous variation of the grid plate gap spacing and optionally, the variation of the size of grid plate holes in a parallel grid plate assembly.
    Type: Grant
    Filed: August 6, 2003
    Date of Patent: April 12, 2005
    Assignee: Texas Instruments Incorporated
    Inventors: Timothy J. Hogan, Timothy A. Taylor
  • Patent number: 6874443
    Abstract: A layer-by-layer etching apparatus and an etching method using a neutral beam which enables to control etching depth to an atomic level by controlling the etching of each atom of a material layer to be etched under precise control of the supply of an etching gas and irradiation of the neutral beam and enables to minimize etching damage. In the layer-by-layer etching method, a substrate to be etched, on which a layer to be etched is exposed, is loaded on a stage in a reaction chamber. An etching gas is supplied into the reaction chamber to adsorb the etching gas on the surface of an exposed portion of the layer to be etched. Excessive etching gas remaining after being adsorbed is removed. A neutral beam is irradiated on the layer to be etched on which the etching gas is adsorbed. Etch by-products generated by the irradiation of the neutral beam is removed.
    Type: Grant
    Filed: February 28, 2002
    Date of Patent: April 5, 2005
    Assignee: Sungkyunkwan University
    Inventors: Geun-young Yeom, Min-jae Chung, Do-haing Lee, Sung-min Cho, Sae-hoon Chung
  • Patent number: 6863835
    Abstract: A plasma chamber apparatus and method employing a magnet system to block the plasma within the chamber interior from reaching the exhaust pump. An exhaust channel between the chamber interior and the pump includes a magnet and at least one deflector that creates turbulence in the flow of exhaust gases. The magnetic field and the turbulence produced by the deflector both increase the rate of recombination of charged particles in the gases, thereby reducing the concentration of charged particles sufficiently to quench the plasma downstream of the magnet and deflector, thereby preventing the plasma body within the chamber from reaching the exhaust pump. The plasma confinement effect of the magnetic field permits the use of a wider and/or less sinuous exhaust channel than would be required to block the plasma without the magnetic field.
    Type: Grant
    Filed: April 25, 2000
    Date of Patent: March 8, 2005
    Inventors: James D. Carducci, Hamid Noorbakhsh, Evans Y. Lee, Hongqing Shan, Siamak Salimian, Paul E. Luscher, Michael D. Welch
  • Patent number: 6861643
    Abstract: A neutral particle beam processing apparatus comprises a process gas inlet port (11) for introducing a process gas into a vacuum chamber (1), a plasma generating chamber (2) for generating positive ions and electrons from the introduced process gas, and a negative ion generating chamber (3) for attaching electrons generated in the plasma generating chamber to the residual gas to generate negative ions. The neutral particle beam processing apparatus further comprises an ion extracting portion (4) for extracting the positive ions or the negative ions and accelerating the positive ions or the negative ions in a predetermined direction, and a neutralizing chamber (5) for neutralizing an ion beam generated by the ion extracting portion (4) to generate a neutral particle beam. The neutral particle beam generated in the neutralizing chamber (5) is applied to a workpiece (X).
    Type: Grant
    Filed: March 22, 2002
    Date of Patent: March 1, 2005
    Assignee: Ebara Corporation
    Inventors: Katsunori Ichiki, Kazuo Yamauchi, Hirokuni Hiyama, Seiji Samukawa
  • Patent number: 6858838
    Abstract: A neutral particle beam processing apparatus comprises a plasma generator for generating positive ions and/or negative ions in a plasma, a pair of electrodes (5, 6) involving the plasma generated by the plasma generator therebetween, and a power supply (102) for applying a voltage between the pair of electrodes (5, 6). The pair of electrodes (5, 6) accelerate the positive ions and/or the negative ions generated by the plasma generator. The positive ions and/or the negative ions are neutralized and converted into neutral particles while being drifted in the plasma between the pair of electrodes (5, 6) toward a workpiece (X). The accelerated neutral particles pass through one of the electrodes (6) and are applied to the workpiece (X).
    Type: Grant
    Filed: March 22, 2002
    Date of Patent: February 22, 2005
    Assignee: Ebara Corporation
    Inventors: Katsunori Ichiki, Kazuo Yamauchi, Hirokuni Hiyama, Seiji Samukawa
  • Patent number: 6843893
    Abstract: A method and structure for an apparatus for removing metal from an integrated circuit structure is disclosed. A container holds an integrated circuit structure that has a metal portion. An electronic device connected to the container produces an electronic field proximate to a limited region of the metal portion. A first supply connected to the container supplies an oxidizing agent within the container. A solvent supply connected to the container supplies solvent to the limited region of the metal portion.
    Type: Grant
    Filed: December 12, 2002
    Date of Patent: January 18, 2005
    Assignee: International Business Machines Corporation
    Inventors: Steven B. Herschbein, Herschel M. Marchman, Chad Rue, Michael R. Sievers
  • Patent number: 6827816
    Abstract: Apparatus and a method for removing particles from the surface of a substrate include determining respective position coordinates of the particles on the surface. A beam of electromagnetic energy is directed via an optical cleaning arm at the coordinates of each of the particles in turn, such that absorption of the electromagnetic energy at the surface causes the particles to be dislodged from the surface substantially without damage to the surface itself.
    Type: Grant
    Filed: November 22, 2000
    Date of Patent: December 7, 2004
    Assignee: Applied Materials, Inc.
    Inventors: Yoram Uziel, David Yogev, Ehud Poles, Amir Wachs
  • Patent number: 6809066
    Abstract: Ion texturing methods and articles are disclosed.
    Type: Grant
    Filed: July 30, 2001
    Date of Patent: October 26, 2004
    Assignee: The Regents of the University of California
    Inventors: Ronald P. Reade, Paul H. Berdahl, Richard E. Russo, Leslie G. Fritzemeier
  • Publication number: 20040163762
    Abstract: A plasma treating device (15) comprising a treating container (20) that houses a wafer (W) for treating by treating gas plasma, and a susceptor (23) that is provided in the treating container (20) and has at least wafer (W)-mounted surface thereof consisting of an insulator (27). A treating gas is supplied from a gas supplying means (60) into the treating container (20), and a high-frequency power is applied to the susceptor (23) from a high-frequency power source (39). A lower electrode (25) connected to the power source (39) is provided on the susceptor (23), and an exposed electrode (29) connected to the lower electrode (25) is also provided exposed on the susceptor (23).
    Type: Application
    Filed: January 27, 2004
    Publication date: August 26, 2004
    Inventors: Hachishiro Iizuka, Taro Ikeda
  • Patent number: 6780341
    Abstract: A shaper for an ion beam gun has a thin, flat plate with a non-symmetrical profile including notches and tabs. The shaper is mounted to the surface of an ion beam grid having an array of holes. The shaper is oriented radially on the grid and covers some of the holes in the grid. The grid is mounted to an ion beam gun above a specimen that is rotated beneath the ion beam gun. The ion beam is filtered into smaller ion beamlets by the grid. The ion beamlets permeate the holes in the grid that are not covered by the shaper. The ion beamlets reach the specimen to etch it more uniformly than a grid that does not have a shaper. The shaper may be further optimized for a particular grid via a trial-and-error process to even further refine the uniformity of etching depth.
    Type: Grant
    Filed: August 6, 2003
    Date of Patent: August 24, 2004
    Assignee: International Business Machines Corporation
    Inventors: David Garcia, Cherngye Hwang, Uriel Ortiz, Nick K. Karmaniolas
  • Patent number: 6773544
    Abstract: The invention concerns a plasma reactor employing a chamber enclosure including a process gas inlet and defining a plasma processing region. A workpiece support pedestal capable of supporting a workpiece at processing location faces the plasma processing region, the pedestal and enclosure being spaced from one another to define a pumping annulus therebetween having facing walls in order to permit the process of gas to be evacuated therethrough from the process region. A pair of opposing plasma confinement magnetic poles within one of the facing walls of the annulus, the opposing magnetic poles being axially displaced from one another. The magnetic poles are axially displaced below the processing location by a distance which exceeds a substantial fraction of a spacing between the facing walls of the annulus.
    Type: Grant
    Filed: January 31, 2001
    Date of Patent: August 10, 2004
    Inventors: James D. Carducci, Hamid Noorbakhsh, Evans Y. Lee, Hongqing Shan, Siamak Salimian, Paul E. Luscher, Michael D. Welch
  • Publication number: 20040140053
    Abstract: A method for creating and transporting low-energy ions for use in plasma processing of a semiconductor wafer is disclosed. In an exemplary embodiment of the invention, the method includes generating plasma from a gas species to produce a plasma exhaust. The plasma exhaust is then introduced into a processing chamber containing the wafer. The ion content of the plasma exhaust is enhanced by activating a supplemental ion source as the plasma is introduced into the processing chamber, thereby creating a primary plasma discharge therein. Then, the primary plasma discharge is directed into a baffle plate assembly, thereby creating a secondary plasma discharge exiting the baffle plate assembly. The strength of an electric field exerted on ions contained in the secondary plasma discharge is reduced. In so doing, the reduced strength of the electric field causes the ions to bombard the wafer at an energy insufficient to cause damage to semiconductor devices formed on the wafer.
    Type: Application
    Filed: January 6, 2004
    Publication date: July 22, 2004
    Inventors: Aseem Kumar Srivastava, Herbert Harold Sawin, Palanikumaran Sakthievel
  • Publication number: 20040084150
    Abstract: A process material crust, such an ion-implanted photoresist, is removed from a treatment object. A halogen-free plasma is generated using a hydrocarbon gas in combination with oxygen gas to subject the crust to the plasma. Methane may be used as the hydrocarbon gas. This plasma may also be use to remove underlying unaltered photoresist and ion implantation related residues. The plasma may likewise be generated using a hydrogen containing gas, which may be pure hydrogen gas, in combination with oxygen gas. Several techniques are used which employ exposure of the treatment to a hydrogen/oxygen based plasma with subsequent exposure to a hydrocarbon/oxygen based plasma.
    Type: Application
    Filed: September 17, 2003
    Publication date: May 6, 2004
    Inventors: Rene George, John Zajac, Daniel J. Devine, Craig Ranft, Andreas Kadavanich
  • Publication number: 20040074604
    Abstract: A neutral particle beam processing apparatus comprises a plasma generator for generating positive ions and/or negative ions in a plasma, a pair of electrodes (5, 6) involving the plasma generated by the plasma generator therebetween, and a power supply (102) for applying a voltage between the pair of electrodes (5, 6). The pair of electrodes (5, 6) accelerate the positive ions and/or the negative ions generated by the plasma generator. The positive ions and/or the negative ions are neutralized and converted into neutral particles while being drifted in the plasma between the pair of electrodes (5, 6) toward a workpiece (X). The accelerated neutral particles pass through one of the electrodes (6) and are applied to the workpiece (X).
    Type: Application
    Filed: December 1, 2003
    Publication date: April 22, 2004
    Inventors: Katsunori Ichiki, Kazuo Yamauchi, Hirokuni Hiyama, Seiji Samukawa