Patents by Inventor Neil Benjamin

Neil Benjamin 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).

  • Publication number: 20140096909
    Abstract: A heating plate of a semiconductor substrate support for supporting a semiconductor substrate in a plasma processing chamber includes a first layer with an array of heater zones operable to tune a spatial temperature profile on the semiconductor substrate, and a second layer with one or more primary heaters to provide mean temperature control of the semiconductor substrate. The heating plate can be incorporated in a substrate support wherein a switching device independently supplies power to each one of the heater zones to provide time-averaged power to each of the heater zones by time divisional multiplexing of the switches.
    Type: Application
    Filed: December 10, 2013
    Publication date: April 10, 2014
    Applicant: Lam Research Corporation
    Inventors: Harmeet Singh, Keith Gaff, Neil Benjamin, Keith Comendant
  • Publication number: 20140047705
    Abstract: An exemplary method for manufacturing a heating plate for a substrate support assembly includes forming holes in at least one sheet, printing a slurry of conductor powder, or pressing a precut metal foil, or spraying a slurry of conductor powder, on the at least one sheet to form the planar heater zones, the power supply lines, and power return lines. The holes in the at least one sheet are filled with a slurry of conductor powder to form power supply and power return vias. The sheets are then aligned, pressed, and bonded to form the heating plate.
    Type: Application
    Filed: October 24, 2013
    Publication date: February 20, 2014
    Applicant: Lam Research Corporation
    Inventors: Harmeet Singh, Keith Gaff, Neil Benjamin, Keith Comendant
  • Publication number: 20140045337
    Abstract: An exemplary method is directed to powering heaters in a substrate support assembly on which a semiconductor substrate is supported. The support assembly has an array of heaters powered by two or more power supply lines and two or more power return lines wherein each power supply line is connected to a power supply and at least two of the heaters and each power return line is connected to at least two of the heaters, and a switching device which independently connects each one of the heaters to one of the power supply lines and one of the power return lines so as to provide time-averaged power to each of the heaters by time divisional multiplexing of switches of the switching device. The method includes supplying power to each of the heaters sequentially using a time-domain multiplexing scheme.
    Type: Application
    Filed: October 17, 2013
    Publication date: February 13, 2014
    Applicant: Lam Research Corporation
    Inventors: Harmeet Singh, Keith Gaff, Neil Benjamin, Keith Comendant
  • Publication number: 20140034608
    Abstract: A chuck for a plasma processor comprises a temperature-controlled base, a thermal insulator, a flat support, and a heater. The temperature-controlled base has a temperature below the desired temperature of a workpiece. The thermal insulator is disposed over the temperature-controlled base. The flat support holds a workpiece and is disposed over the thermal insulator. A heater is embedded within the flat support and/or disposed on an underside of the flat support. The heater includes a plurality of heating elements that heat a plurality of corresponding heating zones. The power supplied and/or temperature of each heating element is controlled independently.
    Type: Application
    Filed: August 13, 2013
    Publication date: February 6, 2014
    Applicant: Lam Research Corporation
    Inventors: Neil Benjamin, Robert J. Steger
  • Patent number: 8637794
    Abstract: A heating plate for a substrate support assembly in a semiconductor plasma processing apparatus, comprises multiple independently controllable planar heater zones arranged in a scalable multiplexing layout, and electronics to independently control and power the planar heater zones. A substrate support assembly in which the heating plate is incorporated includes an electrostatic clamping electrode and a temperature controlled base plate. Methods for manufacturing the heating plate include bonding together ceramic or polymer sheets having planar heater zones, power supply lines, power return lines and vias.
    Type: Grant
    Filed: October 21, 2009
    Date of Patent: January 28, 2014
    Assignee: Lam Research Corporation
    Inventors: Harmeet Singh, Keith Gaff, Neil Benjamin, Keith Comendant
  • Publication number: 20130334171
    Abstract: A method for providing steerability in a plasma processing environment during substrate processing is provided. The method includes managing power distribution by controlling power being delivered into the plasma processing environment through an array of electrical elements. The method also includes directing gas flow during substrate processing by controlling the amount of gas flowing through an array of gas injectors into the plasma processing environment, wherein individual ones of the array of gas injectors are interspersed between the array of electrical elements. The method further includes controlling gas exhausting during substrate processing by managing amount of gas exhaust being removed by an array of pumps, wherein the array of electrical elements, the array of gas injectors, and the array of pumps are arranged to create a plurality of plasma regions, each plasma region being substantially similar, thereby creating a uniform plasma region across the substrate.
    Type: Application
    Filed: August 16, 2013
    Publication date: December 19, 2013
    Inventor: Neil Benjamin
  • Publication number: 20130270250
    Abstract: A method of operating a heating plate for a substrate support assembly used to support a semiconductor substrate in a semiconductor processing apparatus, wherein the heating plate comprises power supply lines and power return lines and respective heater zone connected between every pair of power supply line and power return line. The method reduces maximum currents carried by the power supply lines and power return lines by temporally spreading current pulses for powering the heater zones.
    Type: Application
    Filed: April 13, 2012
    Publication date: October 17, 2013
    Applicant: Lam Research Corporation
    Inventors: John Pease, Neil Benjamin
  • Patent number: 8536494
    Abstract: A chuck for a plasma processor comprises a temperature-controlled base, a thermal insulator, a flat support, and a heater. The temperature-controlled base has a temperature below the desired temperature of a workpiece. The thermal insulator is disposed over the temperature-controlled base. The flat support holds a workpiece and is disposed over the thermal insulator. A heater is embedded within the flat support and/or disposed on an underside of the flat support. The heater includes a plurality of heating elements that heat a plurality of corresponding heating zones. The power supplied and/or temperature of each heating element is controlled independently.
    Type: Grant
    Filed: November 30, 2004
    Date of Patent: September 17, 2013
    Assignee: Lam Research Corporation
    Inventors: Neil Benjamin, Robert Steger
  • Patent number: 8528498
    Abstract: An integrated steerability array arrangement for managing plasma uniformity within a plasma processing environment to facilitate processing of a substrate is provided. The arrangement includes an array of electrical elements. The arrangement also includes an array of gas injectors, wherein the array of electrical elements and the array of gas injectors are arranged to create a plurality of plasma regions, each plasma region of the plurality of plasma regions being substantially similar. The arrangement further includes an array of pumps, wherein individual one of the array of pumps being interspersed among the array of electrical elements and the array of gas injectors. The array of pumps is configured to facilitate local removal of gas exhaust to maintain a uniform plasma region within the plasma processing environment.
    Type: Grant
    Filed: June 24, 2008
    Date of Patent: September 10, 2013
    Assignee: Lam Research Corporation
    Inventor: Neil Benjamin
  • Publication number: 20110090719
    Abstract: System and method for providing isolated power to a component that is also subject a set of RF signals that includes at least a first RF signal having a first RF frequency is provided. There is included providing a DC voltage signal and modulating the DC voltage signal into an isolated power signal using an isolation transformer. The isolated power signal has an intermediate frequency that is higher than 60 Hz and lower than the first RF frequency. There is included supplying the DC voltage signal to the primary winding and obtaining the isolated power signal from the secondary winding; and delivering the isolated power to the component using the isolated power signal.
    Type: Application
    Filed: October 21, 2009
    Publication date: April 21, 2011
    Inventor: Neil Benjamin
  • Publication number: 20110092072
    Abstract: A heating plate for a substrate support assembly in a semiconductor plasma processing apparatus, comprises multiple independently controllable planar heater zones arranged in a scalable multiplexing layout, and electronics to independently control and power the planar heater zones. A substrate support assembly in which the heating plate is incorporated includes an electrostatic clamping electrode and a temperature controlled base plate. Methods for manufacturing the heating plate include bonding together ceramic or polymer sheets having planar heater zones, power supply lines, power return lines and vias.
    Type: Application
    Filed: October 21, 2009
    Publication date: April 21, 2011
    Applicant: Lam Research Corporation
    Inventors: Harmeet Singh, Keith Gaff, Neil Benjamin, Keith Comendant
  • Publication number: 20100041238
    Abstract: A tunable multi-zone injection system for a plasma processing system for plasma processing of substrates such as semiconductor wafers. The system includes a plasma processing chamber, a substrate support for supporting a substrate within the processing chamber, a dielectric member having an interior surface facing the substrate support, the dielectric member forming a wall of the processing chamber, a gas injector fixed to part of or removably mounted in an opening in the dielectric window, the gas injector including a plurality of gas outlets supplying process gas at adjustable flow rates to multiple zones of the chamber, and an RF energy source such as a planar or non-planar spiral coil which inductively couples RF energy through the dielectric member and into the chamber to energize the process gas into a plasma state.
    Type: Application
    Filed: October 23, 2009
    Publication date: February 18, 2010
    Applicant: Lam Research Corporation
    Inventors: David J. Cooperberg, Vahid Vahedi, Douglas Ratto, Harmeet Singh, Neil Benjamin
  • Publication number: 20090215201
    Abstract: A chuck for a plasma processor comprises a temperature-controlled base, a thermal insulator, a flat support, and a heater. The temperature-controlled base is controlled in operation a temperature below the desired temperature of a workpiece. The thermal insulator is disposed over at least a portion of the temperature-controlled base. The flat support holds a workpiece and is disposed over the thermal insulator. A heater is embedded within the flat support and/or mounted to an underside of the flat support. The heater includes a plurality of heating elements that heat a plurality of corresponding heating zones. The power supplied and/or temperature of each heating element is controlled independently. The heater and flat support have a combined temperature rate change of at least 1° C. per second.
    Type: Application
    Filed: May 6, 2009
    Publication date: August 27, 2009
    Inventors: Neil Benjamin, Robert Steger
  • Patent number: 7571697
    Abstract: A plasma processor coil can include a shorting turn ohmically or only reactively coupled to plural multi-turn, co-planar, interleaved spiral, parallel connected windings. A separate capacitor can be associated with each winding to shunt current from one portion of that winding to another portion of the winding. The spacing between adjacent turns of peripheral portions of each winding can differ from the spacing between adjacent turns of interior portions of each winding. The coil can have a length that is short relative to the wavelength of RF excitation for the coil.
    Type: Grant
    Filed: September 13, 2002
    Date of Patent: August 11, 2009
    Assignee: Lam Research Corporation
    Inventors: Neil Benjamin, David Cooperberg
  • Publication number: 20090149028
    Abstract: A capacitively-coupled plasma (CCP) processing system having a plasma processing chamber for processing a substrate is provided. The capacitively-coupled Plasma (CCP) processing system includes an upper electrode and a lower electrode for processing the substrate, which is disposed on the lower electrode during plasma processing. The capacitively-coupled Plasma (CCP) processing system also includes an array of inductor coils arrangement configured to inductively sustain plasma in a gap between the upper electrode and the lower electrode.
    Type: Application
    Filed: September 24, 2008
    Publication date: June 11, 2009
    Inventors: Alexei Marakhtanov, Eric Hudson, Rajinder Dhindsa, Neil Benjamin
  • Publication number: 20090081811
    Abstract: A distributed power arrangement to provide local power delivery in a plasma processing system during substrate processing is provided. The distributed power arrangement includes a set of direct current (DC) power supply units. The distributed power arrangement also includes a plurality of power generators, which is configured to receive power from the set of DC power supply units. Each power generator of the plurality of power generators is coupled to a set of electrical elements, thereby enabling the each power generator of the plurality of power generators to control the local power delivery.
    Type: Application
    Filed: June 24, 2008
    Publication date: March 26, 2009
    Inventor: Neil Benjamin
  • Publication number: 20090078677
    Abstract: An integrated steerability array arrangement for managing plasma uniformity within a plasma processing environment to facilitate processing of a substrate is provided. The arrangement includes an array of electrical elements. The arrangement also includes an array of gas injectors, wherein the array of electrical elements and the array of gas injectors are arranged to create a plurality of plasma regions, each plasma region of the plurality of plasma regions being substantially similar. The arrangement further includes an array of pumps, wherein individual one of the array of pumps being interspersed among the array of electrical elements and the array of gas injectors. The array of pumps is configured to facilitate local removal of gas exhaust to maintain a uniform plasma region within the plasma processing environment.
    Type: Application
    Filed: June 24, 2008
    Publication date: March 26, 2009
    Inventor: Neil Benjamin
  • Publication number: 20090000738
    Abstract: An arrangement for enabling local control of power delivery within a plasma processing system having a plasma processing chamber during processing of a substrate is provided. The arrangement includes a dielectric window and an inductive arrangement. The inductive arrangement is disposed above the dielectric window to enable power to couple with a plasma in the plasma processing system. The inductive arrangement includes a set of inductive elements, which provides the local control of power delivery to create a substantially uniform plasma in the plasma processing chamber.
    Type: Application
    Filed: June 24, 2008
    Publication date: January 1, 2009
    Inventor: Neil Benjamin
  • Publication number: 20080019418
    Abstract: An apparatus for measuring a temperature of a substrate is disclosed. The apparatus includes a phosphor material in direct contact with the substrate and in thermal contact with the substrate, the phosphor material producing a fluorescent response in a first wavelength range when exposed to a electromagnetic radiation in a second wavelength range, the fluorescent response decaying at a decay rate that is related to a temperature of the phosphor material, and the phosphor material producing a first set of non volatile byproducts when exposed to a plasma.
    Type: Application
    Filed: July 27, 2007
    Publication date: January 24, 2008
    Inventors: Keith Gaff, Neil Benjamin
  • Patent number: 7274004
    Abstract: A chuck for a plasma processor comprises a temperature-controlled base, a thermal insulator, a flat support, and a heater. The temperature-controlled base has a temperature below the desired temperature of a workpiece. The thermal insulator is disposed over the temperature-controlled base. The flat-support holds a workpiece and is disposed over the thermal insulator. A heater is embedded within the flat support and/or disposed on an underside of the flat support. The heater includes a plurality of heating elements that heat a plurality of corresponding heating zones. The power supplied and/or temperature of each heating element is controlled independently.
    Type: Grant
    Filed: November 30, 2004
    Date of Patent: September 25, 2007
    Assignee: Lam Research Corporation
    Inventors: Neil Benjamin, Robert Steger