Patents by Inventor Michael Ravkin

Michael Ravkin has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 6988327
    Abstract: A system and method of moving a meniscus from a first surface to a second surface includes forming a meniscus between a head and a first surface. The meniscus can be moved from the first surface to an adjacent second surface, the adjacent second surface being parallel to the first surface. The system and method of moving the meniscus can also be used to move the meniscus along an edge of a substrate.
    Type: Grant
    Filed: March 31, 2003
    Date of Patent: January 24, 2006
    Assignee: Lam Research Corporation
    Inventors: James P. Garcia, John M. de Larios, Michael Ravkin, Fred C. Redeker, Carl Woods
  • Patent number: 6954993
    Abstract: In one of the many embodiments, a method for processing a substrate is disclosed which includes generating a first fluid meniscus and a second fluid meniscus at least partially surrounding the first fluid meniscus wherein the first fluid meniscus and the second fluid meniscus are generated on a surface of the substrate.
    Type: Grant
    Filed: June 30, 2004
    Date of Patent: October 18, 2005
    Assignee: Lam Research Corporation
    Inventors: Michael G. R. Smith, Michael Ravkin, Robert J. O'Donnell
  • Publication number: 20050217137
    Abstract: In one of the many embodiments, a method for processing a substrate is disclosed which includes generating a first fluid meniscus and a second fluid meniscus at least partially surrounding the first fluid meniscus wherein the first fluid meniscus and the second fluid meniscus are generated on a surface of the substrate.
    Type: Application
    Filed: June 30, 2004
    Publication date: October 6, 2005
    Applicant: Lam Research Corp.
    Inventors: Michael Smith, Michael Ravkin, Robert O'Donnell
  • Patent number: 6949411
    Abstract: A method for cleaning a semiconductor wafer is provided which includes plasma etching a feature into a low K dielectric layer having a photoresist mask where the plasma etching generates etch residues. The method also includes ashing the semiconductor wafer to remove the photoresist mask where the ashing generating ashing residues. The method further includes removing the etching residues and the ashing residues from the low K dielectric layer where the removing is enhanced by scrubbing the low K dielectric layer of the semiconductor wafer with a wet brush that applies a fluid mixture including a cleaning chemistry and a wetting agent.
    Type: Grant
    Filed: December 27, 2001
    Date of Patent: September 27, 2005
    Assignee: Lam Research Corporation
    Inventors: Katrina Mikhaylichenko, Michael Ravkin, John deLarios
  • Publication number: 20050155629
    Abstract: A method for cleaning and drying a front and a back surface of a substrate is provided. The method includes brush scrubbing the back surface of the substrate using a brush scrubbing fluid chemistry. The method further includes applying a front meniscus onto the front surface of the substrate upon completing the brush scrubbing of the back surface. The front meniscus includes a front cleaning chemistry that is chemically compatible with the brush scrubbing fluid chemistry.
    Type: Application
    Filed: March 31, 2004
    Publication date: July 21, 2005
    Applicant: LAM RESEARCH CORP.
    Inventors: Michael Ravkin, John de Larios
  • Publication number: 20050145265
    Abstract: Among the many embodiment, in one embodiment, a method for processing a substrate is disclosed which includes generating a fluid layer on a surface of the substrate, the fluid layer defining a fluid meniscus. The generating includes moving a head in proximity to the surface, applying a fluid from the head to the surface while the head is in proximity to the surface of the substrate to define the fluid layer, and removing the fluid from the surface through the proximity head by a vacuum. The fluid travels along the fluid layer between the head and the substrate at a velocity that increases as the head is in closer proximity to the surface.
    Type: Application
    Filed: June 30, 2004
    Publication date: July 7, 2005
    Applicant: Lam Research Corp.
    Inventors: Michael Ravkin, Michael Smith, John de Larios, Fritz Redeker, Mikhail Korolik, Christian DiPietro
  • Publication number: 20050090093
    Abstract: A system and method for planarizing and controlling non-uniformity on a patterned semiconductor substrate includes receiving a patterned semiconductor substrate. The patterned semiconductor substrate having a conductive interconnect material filling multiple features in the pattern. The conductive interconnect material having an overburden portion. A bulk of the overburden portion is removed and a remaining portion of the overburden portion has a non-uniformity. The non-uniformity is mapped, optimal solution determined and a dynamic liquid meniscus etch process recipe is developed to correct the non-uniformity. A dynamic liquid meniscus etch process, using the dynamic liquid meniscus etch process recipe, is applied to correct the non-uniformity to substantially planarize the remaining portion of the overburden portion.
    Type: Application
    Filed: January 30, 2004
    Publication date: April 28, 2005
    Applicant: LAM RESEARCH CORPORATION
    Inventors: Andrew Bailey, Michael Ravkin, Mikhail Korolik, Puneet Yadav
  • Patent number: 6866051
    Abstract: A megasonic module for substrate processing is provided. Embodiments of the present invention include a tank configured to hold processing fluids in which the substrate is submerged, and a lid configured to mate with and seal the tank. At least two megasonic transducers are positioned within the megasonic module to direct megasonic energy to each of an active surface and a backside surface of the substrate. A pair of drive wheels are configured to receive an edge of the substrate to support and rotate the substrate in a horizontal orientation between the at least two megasonic transducers. The substrate is supported against the pair of drive wheels by a substrate stabilizing arm/wheel which also allows the rotation of the substrate. A drive motor is configured to rotate the pair of drive wheels, and a fluid recirculation system provides for temperature control and use of a plurality of processing fluids.
    Type: Grant
    Filed: September 26, 2002
    Date of Patent: March 15, 2005
    Assignee: Lam Research Corporation
    Inventors: Afshin Nickhou, Randolph E. Treur, Michael Ravkin
  • Patent number: 6851436
    Abstract: A system and method for re-circulating processing fluids in a substrate processing system is provided. A fluid re-circulation system for a brush box processing tool includes a supply tank into which processing chemicals, DI water, or other processing fluids are introduced into the system from an external source. Processing chemicals are provided to the brush box and dispensed to process a substrate. Dispensed fluids drain from the brush box into a diverter through which fluids either flow to waste, or into a collection tank. Fluids from the collection tank flow into the supply tank to re-circulate for wafer processing. The re-circulation system includes filters for maintaining chemical purity, and chemical concentration is monitored and adjusted as necessary.
    Type: Grant
    Filed: June 28, 2002
    Date of Patent: February 8, 2005
    Assignee: Lam Research Corporation
    Inventors: Michael Ravkin, John deLarios, Afshin Nickhou, Katrina Mikhaylichenko, James P. Garcia
  • Publication number: 20040182422
    Abstract: A system and method for processing a wafer includes applying a process to the wafer. The process being supported by a surface tension gradient device. A result of the process is monitored. The monitored result is output.
    Type: Application
    Filed: June 24, 2003
    Publication date: September 23, 2004
    Applicant: LAM RESEARCH CORPORATION
    Inventors: John M. Boyd, John M. de Larios, Michael Ravkin, Fred C. Redeker
  • Publication number: 20040163682
    Abstract: A method for cleaning a semiconductor substrate is provided. The method initiates with generating acoustic energy oriented in a substantially perpendicular direction to a surface of a semiconductor substrate. Then, acoustic energy oriented in a substantially parallel direction to the surface of the semiconductor substrate is generated. Each orientation of the acoustic energy may be simultaneously generated or alternately generated. A system and an apparatus for cleaning a semiconductor substrate are also provided. Additionally, a method and a system for electroless plating are provided.
    Type: Application
    Filed: February 20, 2003
    Publication date: August 26, 2004
    Applicant: LAM RESEARCH CORPORATION
    Inventors: John M. Boyd, Michael Ravkin, Fred C. Redeker
  • Patent number: 6770151
    Abstract: Methods for rinsing and drying a substrate are provided. In one example, a method for rinsing and drying a substrate includes providing a substrate for processing and securing the substrate in a hollow spin chuck. The hollow spin chuck with the substrate positioned therein is rotated at a first rate of rotation while a rinsing agent and a surface tension modifying agent are dispensed at a position that is an approximate center of the spinning substrate on both an active surface and a backside surface of the substrate. The dispensing is moved from the approximate center of the spinning substrate radially outward towards a periphery of the substrate. The dispensing is then discontinued, and the hollow spin chuck with the substrate positioned therein is rotated at a second rate of rotation.
    Type: Grant
    Filed: July 15, 2002
    Date of Patent: August 3, 2004
    Assignee: Lam Research Corporation
    Inventors: Michael Ravkin, Katrina Mikhaylichenko, John M. deLarios
  • Patent number: 6733596
    Abstract: A method for cleaning top and bottom surfaces of a semiconductor substrate is provided. The method includes scrubbing top and bottom surfaces of the semiconductor wafer with top and bottom brushes, respectively. Top and bottom brushes are saturated and supplied with a scrubbing fluid. The top and bottom brushes are squeezed so as to press out excess scrubbing fluid by continuing to apply top and bottom brushes against top and bottom surfaces of the semiconductor substrate, respectively, but without supplying the scrubbing fluid. Top and bottom brushes are respectively moved away from the top and bottom surfaces of the semiconductor substrate. The top brush is rotated so as to prevent dripping onto the top surface of the semiconductor substrate. Top and bottom surfaces of the semiconductor substrate are rinsed using a rinse fluid while continuing to rotate the top brush that was squeezed to press out the excess scrubbing fluid.
    Type: Grant
    Filed: December 23, 2002
    Date of Patent: May 11, 2004
    Assignee: Lam Research Corporation
    Inventors: Katrina Mikhaylichenko, Michael Ravkin
  • Publication number: 20040060195
    Abstract: A system and method of moving a meniscus from a first surface to a second surface includes forming a meniscus between a head and a first surface. The meniscus can be moved from the first surface to an adjacent second surface, the adjacent second surface being parallel to the first surface. The system and method of moving the meniscus can also be used to move the meniscus along an edge of a substrate.
    Type: Application
    Filed: March 31, 2003
    Publication date: April 1, 2004
    Applicant: LAM RESEARCH CORPORATION
    Inventors: James P. Garcia, John M. de Larios, Michael Ravkin, Fred C. Redeker, Carl A. Woods
  • Patent number: 6624078
    Abstract: A method for using a monitor substrate to determine effectiveness of a cleaning operation is provided. The method includes selecting a substrate from a lot of substrates and inspecting a surface of the substrate to determine a roughness profile of the substrate. The monitor substrate is then processed through a cleaning operation, and the monitor substrate is patterned with die regions throughout. Each of the die regions has a plurality of areas defining distinct roughness simulations. The method the proceeds to inspecting the monitor substrate at one die region and at one of the plurality of areas in the one die region that most closely resembles the roughness profile of the substrate. The inspecting of the monitor substrate is configured to yield data regarding cleaning performance of the cleaning operation.
    Type: Grant
    Filed: July 15, 2002
    Date of Patent: September 23, 2003
    Assignee: Lam Research Corporation
    Inventor: Michael Ravkin
  • Patent number: 6616516
    Abstract: An asymmetric double-sided substrate scrubber is provided. The asymmetric double-sided substrate scrubber includes a first roller and a second roller. The first roller is constructed from a first material having a first density and the second roller is constructed from a second material having a second density. The second density is designed to be greater than the first density. The first roller is designed to be applied onto a first side of a substrate with a first force and the second roller is designed to be applied onto a second side of the substrate with a second force. The second force is configured to be substantially equivalent to the first force.
    Type: Grant
    Filed: December 13, 2001
    Date of Patent: September 9, 2003
    Assignee: Lam Research Corporation
    Inventors: Michael Ravkin, John de Larios, Katrina Mikhaylich
  • Patent number: 6607072
    Abstract: A wheel for a conveyor system for transporting semiconductor wafers includes a first section for supporting a semiconductor wafer at a first level and a second section for supporting the wafer at a second level, with the first level being higher than the second level. In one embodiment, each of the first and second sections is semicircular. The first level may be substantially the same as a level at which the wafer is subjected to a wafer cleaning operation, and the distance the second level is below the first level may be in a range from about one sixteenth of an inch to about three sixteenths of an inch. A conveyor system for transporting wafers and a method for transferring wafers from a conveyor system to a wafer processing station also are described.
    Type: Grant
    Filed: July 11, 2002
    Date of Patent: August 19, 2003
    Assignee: Lam Research Corporation
    Inventors: Brian M. Bliven, Michael Ravkin
  • Publication number: 20030060126
    Abstract: A system and method of reducing defects in chemical mechanical planarization of polysilicon is disclosed. The system includes first and second polishing stations each having a different hardness polishing pad and a different slurry. A cleaning station using a dilute SC1 chemistry is also included. The process includes polishing a polysilicon wafer on a first polishing station using a hard polishing pad and then polishing the polysilicon wafer on a second polishing station having a soft pad. The polysilicon wafer may then be directly placed in a scrubber using a dilute SC1 chemistry.
    Type: Application
    Filed: July 16, 2002
    Publication date: March 27, 2003
    Applicant: Lam Research Corporation
    Inventors: Katrina Mikhaylich, Michael Ravkin
  • Publication number: 20020174881
    Abstract: A wheel for a conveyor system for transporting semiconductor wafers includes a first section for supporting a semiconductor wafer at a first level and a second section for supporting the wafer at a second level, with the first level being higher than the second level. In one embodiment, each of the first and second sections is semicircular. The first level may be substantially the same as a level at which the wafer is subjected to a wafer cleaning operation, and the distance the second level is below the first level may be in a range from about one sixteenth of an inch to about three sixteenths of an inch. A conveyor system for transporting wafers and a method for transferring wafers from a conveyor system to a wafer processing station also are described.
    Type: Application
    Filed: July 11, 2002
    Publication date: November 28, 2002
    Applicant: Lam Research Corporation
    Inventors: Brian M. Bliven, Michael Ravkin
  • Patent number: 6439245
    Abstract: A wheel for a conveyor system for transporting semiconductor wafers includes a first section for supporting a semiconductor wafer at a first level and a second section for supporting the wafer at a second level, with the first level being higher than the second level. In one embodiment, each of the first and second sections is semicircular. The first level may be substantially the same as a level at which the wafer is subjected to a wafer cleaning operation, and the distance the second level is below the first level may be in a range from about one sixteenth of an inch to about three sixteenths of an inch. A conveyor system for transporting wafers and a method for transferring wafers from a conveyor system to a wafer processing station also are described.
    Type: Grant
    Filed: June 30, 2000
    Date of Patent: August 27, 2002
    Assignee: Lam Research Corporation
    Inventors: Brian M. Bliven, Michael Ravkin